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This affords you the ability to measure out-of-round conditions and tapers of cylinders without the necessity of removing pistons, including . Apparatus for gauging the alignment of a multiplicity of bearing seats lying along a common reference axis comprising an elongated shaft, first and second bearings for rotatably journaling the shaft in a pair of reference bearing seats, a radial distance indicator mechanism coupled to a collar slidably mounted on the shaft, and a means to contact the radial distance indicator mechanism to . UPC: 036584209614. A race mill can run slightly looser, say .0025 to .0035. . BUT I plasti-gauged . Started checking the crank and main bearings for my next engine lately, and find the dial bore gage to be more difficult to use than I expected. Specs call for 2.4995-2.5005 so crank is all good for sure. Oil Temp. Should be in the range of the green, 0-3 thou. Example: If I measure on the front side of the groove, I get .0034 clearence. I'm reviewing this Jeg's Dial Bore Gauge as an amateur engine builder. Video does not describe tool setup. I have the 130M 220* or 3/4 groove main bearings for my 69 351W block. #3 - 0.0025" #2 - 0.0020" 6 pc TELESCOPIC T BORE HOLE Precision GAGE GAUGE SET Every Day Low Price: $22.85 . Hot Rods main bearing kits come with both bearings and the inner race for the left side. The advantage a dial bore guage has is that you can set it to the outside micrometer reading for a journal, the use to not only check bearing clearance, but also taper and how far out of round the bearing is in the housing. This tool allows you to accurately measure the inside diameters of the main bearings and the connecting rod. I have no experience with the Summit dial bore gauge, but there are some really crappy ones coming from China. If you are going to check bearing clearance, then buy 1 rod bearing and use it to check all 8 rods, then order accordingly. $ 114 95. tapered. Here are the measured differences: #5 - 0.0035" #4 - Just a whisker under 0.002". A bore gauge is a tool used to measure the inside of a bore, or hole. This one tool can measure 2 up to 6 diameter holes. Setting the bore gauge to zero with a master or micrometer allows you to see the difference in the bore that you are measuring so a precise measurement can be performed. Diesel Supply's legendary tool line is still going strong some 60 years later. Going through the steps, measure the crankshaft journal with the micrometer, zero the bore gauge against the micrometer, and then measure and get .0025 (+/- .0005 error) which means your actual measurement is between .0020 and .0030. Fordstrokers.com B Blown85GT Registered It is done with a dial indicator and a crane or jack or pry bar and chain. Paul Kane. dial bore gauge. There is a tolerance on that bore so if it's on the tight side, the bearing will be tight also. First I measured the crank journal with a micrometer. Whether you're a beginner or a pro engine builder, you can measure rod bores, main bearings, and cylinder bores with precision. 2) Measured the rod big ends without bearings. If the tolerances stack up The dial bore gauge (or gage) is a tool that accurately measures the diameter of a given bore. Dial Caliper Fractional + Decimal 1/64" Auto Convertion Every Day Low Price: $23.99 . All measurements should be consistent within 0.001 inch, with a maximum out-of-round of less than . They have about half the pressure of the knock-offs. The Jeg's Gauge is an excellent tool for the purchase price. Add .010 and got 2.4999. . Clearances must always be checked in the true vertical. Main journals measured 2.4481-2.4483. Summit Racing Part Number: POW-POW351075. It can be done though. shells in the caps. Yes, a good dial bore gauge is your best friend. The cam chain gear needs to be pressed on and off to change it. It flowed too much past the main bearings so it didn't hold enough back for the cam bearings and wiped all five. Technician B stated that a dial bore gauge can also be used to measure main bearing bore for taper and out-of-round. I zeroed a Central 2-6" dial bore gauge to 2.2250 and took a direct measurement with the bore gauge. Additionally, the dial bore gauge is easily repeatable to within 0.0005 inch total range, so it is very easy to tell if the bore is out of round. Like x 1. Using the tightening specifications (sequence optional) shown in Steps 7-8 in Chapter 8, install each main cap and use a dial bore gauge to measure the diameter of each main bearing bore in a crosswise pattern (minimum two measurements per bore). In this example, we're looking at .0027-inch of main bearing clearance. 1-16 of 275 results for "dial bore gauge" RESULTS Price and other details may vary based on product size and color. Measured the crank journals with the mic. A Bore Gauge or Dial Bore Gauge, as it may also be referred to, is used to accurately measure inside diameters. Will these marks have any impact on the performance of the bearing? Put the main bearings in, and torqued down the bedplate according to spec. They in no way depend upon a sense of "feel" as is the case with non-indicating types. . With these two tools you can quickly determine the clearances in any engine. I then zero out the dial bore gauge on the mic and check the clearances on the main bearings . I am trying to acheive atleast .003 on the mains and would like .0035-.0045 so I went ahead and got the oversized bearings (130M1X) to get an extra .001 clearance. . Then I zeroed my bore gauge inside the mic. All bearings have different tolerances. Most bore gauges have a three point contact with the main contact being adjustable for varying dimensions. Much better than the previous method. Where did it come from? . and using a dial-bore gauge on the bearing with it installed in the block/rod isn't the most accurate way either, b/c the spring tension of the gauge will actually gouge the bearing some, it best to us a pair of tubing mics on the bearing . I was measuring the clearance with a dial indicator and afterwards I noticed there were some scratches on the bearing from the dial indicator. Dial Bore Gages Dial bore gages measure internal diameters and bores and are a proper choice when ovality and/or cylindricity is of concern. The bearing largest bore will be found with smallest crankpin and largest clearance. Which of the following statements about this scenario is true? Clear Filters Sort Show Page COMPARE Made in America Yes (29) Range (in) .107 - .266" (1) Plastigage is kinda hard to do on rods. Red450IH # 97125 05/26/20 03:04 PM. For example a bore gauge can also be used to check and confirm bearing clearances for both the main bearings and big end bearings of the engine by measuring the inside diameter of the con rod big end journal with the bearing shells installed, or alternatively, the main bearing tunnel in the block with the main bearing shells installed. Pull the 3 oil galley plugs, get a shotgun cleaning kit, knock the plugs out on the other end of the block and push the wire brush through there. Dial-Bore Gauge This tool uses a dial indicator on a post with a small wheeled measuring apparatus. i use mics and dial bore gauges to measure. In conjunction with a micrometer, a bore gauge will give you the exact reading of a bore size. Dorsey has recently increased the dial bore gage offering by adding a new Dorsey / Standard #7 and # 8 size gages. The Description of bore gages Bore gages are comparative instruments designed to check hole diameter and condition. 3D MINI UNIVERSAL MAGNETIC BASE HOLDER for INDICATOR The bore . However, even with these bearings I still am only getting .0022 clearance on the mains. Keep in mind a dial bore gauge is a plus/minus measuring tool. The dial-bore gauge that I'm using to check bearing clearances is leaving fine scratch marks on the bearings. Then you can zero out the gauge in the bore. Every Day Low Price: $23.95 .25" MICRO MINI DIAL INDICATOR GAGE GAUGE AGD Precision Every Day Low Price: $23.99 . Many bi-metal aluminum performance bearings can handle loads as high as 10,000 PSI (550 to 600 hp). . . As to the second concern, this can be addressed by using a micrometer to run the dial gauge down to the same reading taken by the gauge in the bore. Dial Bore Gauges. Solution we use -.002 shell in the block and Std. Pay attention to min and max and how they add up. Its copied from the Standard brand dial bore gauge. Re: Main Bearing Bore Diameter - 292. Nov 18, 2015 #7 69Bee FBBO Gold Member. Now the stack up of dimensions looks like this. No bearings in and zeroing the bore gauge on #1 1) 0 2) .0002 tight 3) .0004-.0005 loose 4) .0004 loose 5) .0002 loose Think I'll just run what I have vs ordering two more sets of bearings to fight a few tenths . These indicators can automatically zero in at any position and convert inch/metric with the push of a button. Two technicians were discussing the use of a dial bore gauge. Be sure the micrometers and dial bore gauges will measure down to 0.0001 inch. COMP Cams Dial Bore Gauge Combo measures rod bores, main bearings and cylinder bores. Over 220 F. Iron Block . Machine operators find our bore gages to be particularly useful . On sbc and ls engines I set the mains at .0022-.0025 on all mains. Product Line: Powerhouse Products Dial Bore Gauge Combos. If you want to see that video,. Now you must check the rods too. Cheaper tools often only measure down to 0.001 inch. Lock the mic, and then use the mic to setup your bore gauge. The typical rule of thumb for an OE or mild-performance application is .001-inch bearing clearance for every 1-inch of crankshaft or rod journal diameter. Bore gauges are also known as cylinder tests, hole tests, bore mics, holtests, internal micrometers, hold bore gauges, or telescoping gauges. Plastigage and Bud Light Lime did confirm the mains have .002 in clearance. Customers around the world know they can trust DSC's quality engineered Piston Ringers, Glaze Busters, Dial Bore Gauges, and Groove Cleaners. Reply Chain: Seen more than one that ate the main bearings up on its initial brake in due to the crap in those oil galleys.. some machine shops clean them, some don't. An even better option is to use a bore gauge. An align bore runs about $150 extra but is cheap compared to a spun bearing. . Bought both a dial bore gage and a set of telescoping gages. There are no quick and easy ways to establish this critical. Cam Bearing Tool Set for Installation & Removal of Camshaft Bearings (25) That would cause the bearing to be destorted in the rod which would cause the other wear issues with the bearing. The last time it was done clearances were set to 0.0017" (spec is 0.001" - 0.002"). A minimum of a 2-to-3-inch inside micrometer and a dial bore gauge are necessary. Precisely measuring your bore size is a similarly easy process. Measuring bearing clearance is only valuable if the numbers are accurate so use quality tools. With the gauge in the housing bore, the indicator will read the bearing clearance. /driver i'm putting together now will have between .0022"-.0024" on the rods. You will also need a torque wrench and sockets. Lastly I measured the inside diameter of the bearings (with the main caps at 100 ft/lbs) after having zeroed at the crank journal diameter. The bore gage is from Sears, still made in Timbuktu, but the . These are adjustable through graduated post extenders that increase the diameter of the measurement circle. 0.0034-0.0039. The measurement I'm getting using a mic and dial bore gauge is 2.4905" straight up and down (90 degrees away from the cap parting line) But very near the parting line the bore is .0020" larger which seems like a lot. Ray B buildit Well Known Member Supporting Member 8 Aug 9, 2009 #12 00:20: The bore gauge is used, for example, to check and confirm bearing clearances for both the main bearings and big end bearings of the engine by measuring the inside diameter of the con rod big end . Big blocks .0025-.003 due to the larger main journal. DavisJ1817. When measured with a micrometer and dial bore gauge the measurement was much different, almost 0.0040". A dial bore gauge is a special tool, calibrated in .001 inch (.0025 centimeter) or .0001 inch (.00025 centimeter), which is used to accurately measure the inside diameter of a hole, cylinder or pipe. Determining the main bearing oil clearance for #2 journal of a Triumph Spitfire Mk1 motor. Best Seller Fowler 52-646-300-0, Cylinder Dial Bore Gage with 6" Measuring Range 326 $10600$130.00 Get it as soon as Tue, Oct 18 FREE Shipping by Amazon More Buying Choices $97.00 (8 new offers) COMP Cams Dial Bore Gauge Combo. Okay well that will take us from .0035 to .0015" well we don't like that either. iGaging T27472 - 1.4-6"/0.0005" Dial Bore Gauge. Automotive Machining, cylinder head rebuilding, engine building. BORE GAGE, DIAL 8" - 12-1/2" Range.0005" Visit the Starrett Store $1,46400 FREE Returns Can be easily held to inspect bores and Hole sizes without removing the work piece An adjustable range Screw and two centralizing plungers provide accurate, three-point contact for tool alignment in larger bores So multiply by 2 and get .1910" For my calculated main bearing clearence i get 1: .0011 2: .0011 3: .0011 4: .0001 5: .0006 Is it usual for a STD bearing to be this tight, i was thinking of ordering a .001 OVER to gain a .001 more clearence. I rarely fool with plastigaging rods. plastic gauge is not for engines. Technician B says each main bearing receives its own oil under . Now that I've given everyone a headache, including myself, I'll leave it at that for now. A dial bore gauge will show the clearance of each bearing with no relationship to warping. Engine Bearings; Engine Block Main Caps; Engine Fuel Pump Block-Off Plates; Timing Pointers; Engine Diaper; Books, Video, and DVD: . Standard Series Bore Gages. The bearings MUST be installed in the case, with the case fully torqued with ALL of the fasteners just like it will be running. My block is a 350 sbc gen 1. This . 1) Measured the crank main and rod jounals with a Central 1.5-2.5 bearing micrometer (.0001). There is a Mitutoyo thats good for bearings, the 545-135, it has large radius fingers and doesn't make marks. dial bore gauge bore dial gauge mitutoyo bore gauge cylinder bore gauge bore guage digital bore gauge micro gauge shallow bore gauge mitutoyo bore gauge 11,000/ Piece Get Latest Price Brand: mitutoyo The clearance read by the dial bore gauge will be the bearing clearance. I already bough 909H bearings from Mahle and they say bearing thickness is .0955. I installed the new main bearings and torqued the main caps. Measuring the inside diameter of a housing bore like the mains on this small block Chevy requires the use of dial bore gauge. Use your mic to measure the crank journals. The dial bore gauge is set to zero using a micrometer set to the diameter of the main journal. Spending the extra money on a gauge with a range of two to six inches and with graduations accurate to 0. . Before the bearings are installed the main bearing bolt holes need to be chased with the corresponding tap size. I'm using Clevite P-series main bearings for my engine rebuild. For mains, it's harder, they dont sell singles, so you have to buy a set and check clearance. FBBO Gold . A similar calculation for the rod journal indicates a necessary .002-inch clearance. Bearing Radial Play Gage Features: S-3 stand Radial play attachment Choice of standard anvil set which includes the carrier, anvil and clamp assembly Special radial play contact Variable pressure weight arm assembly adjustable from 6.5 to 16 oz., upward force Dial indicator model # 414-002 (.00002 graduation) or #4I01-0005mm (0.0005mm) This is done to ensure that no dirt, metal, etc is stuck in . Setting bearing clearance for a performance engine is a fundamental step in the building process. Get dialed in with COMP Cams dial bore gauge combos. Diesel Supply Company, U.S.A: Serving the natural gas industry with quality products for over 60 years- 800-688 2031 GETINFO@DIESELSUPPLY.COM. I have checked my main bearing clearences with a dial bore gauge & have found a measured difference on each side of the oil groove. If I measure directly behind it on the rear side of the oil groove I get .0028.Every bearing has this varience. Prep your green plastigage and prepare to install the main caps with the bearings in place. We go digging through the archives and fine a set of -.002" factory ford bearings. To start, make sure the anvil is the proper length to contact the cylinder wall. May 2, 2021 Lets see if I can get this right. A Welch plug is a: type of soft, round metal disc pressed into the engine block to plug water jackets or passageways. Agree x 1. Bore Adjustment Range (in. Crank in place, cut with a knife and lay a 1/2" long strip in line with the crank line on the crank bearing , light film of WD40 on the cap side bearings, torque caps, don't rotate anything, remove caps and measure in place. ): 2.000-6.000 in. 02-18-2013, 07:37 AM. Just about all dial bore gauges will leave slight marks on the bearing shells and these will not compromise the quality of the bearing. Technician A stated that a dial bore gauge is used to measure cylinder taper and out-of-round. Noaht4. Zero the dial gauge while it is inside your mic, and then go measure your bearings. Main Bearing Clearance. With a big block Chevy using a 2.75-inch main journal diameter, our tolerance is calculated to .0027-inch. All were exactly the same and at 2.4899 in. many critical components. Dial bore gauge Rod stretch gauge tool Micrometer 3-4" machinist measurement tool 2-3" machinist measurement tool Plastic gauge Torque wrench Feeler gauges Ring filer . In fact, if the quality of the instrument is good enough, a dial may be more accurate, because the readings are not subject to the "feel" of the operator. What kind of clearance do u guys like to see on your bearings . Many, many years ago, before I bought a dial bore gauge, I used snap gauges. That model is discontinued. Its definitely better to use plastigauge than to use a dial bore gauge, micrometer, and math wrong. than 160 F. Oil Temp. Dial bore gages are used to quickly inspect hole diameter as well as to detect and measure all kinds of bore conditions such as taper, bell-mouth and out-of roundness. Ofcourse this is all measured with dial bore gauges and mics. Runout on mains, worst one was .00075 rest were less than that. Once set, this spring-loaded tool can make the process much faster and every bit as accurate. 5 torr Absolute Pressure Gauges Bottom Connection Unlike other gauges that measure the difference between your system and the atmosphere, these give measurements relative to zero pressure. Its a clean bare block at the moment. Once a bore gauge is inserted into the hole that needs measuring, small parts called anvils expand outward to determine the diameter. Thread starter 951 Blackplanet; Start date Jan 11, 2007; 9. main bearing clearances. The first thing you have to check is the bore in the block with the caps torqued down. and .0027" on the mains. Your list says it's a 383 check the crank. The marks cannot be felt with my finger or fingernail. Am I close Ronnie? The bearings have a thin coating of some sort of metal. In a performance engine it is to go more on the loose side than tight. 951 Blackplanet . my 2 cents good luck use a dial bore gage & an outside mic. Technician A says all main bearings and rod bearings are held in place by what is called bearing crush. The # 7 measures between 10.00"-24.00" (254mm-610mm) and the #8 measures between 21.00" - 36.00' (533mm- 915mm). We set our dial indicator at 2.100-inch because the Number One rod journal measured 2.0994-inch, we added that .0006-inch to the bearing inside diameter indicated on the dial bore gauge. by measuring the main and rod journals with a micrometer and subtracting the numbers from measurements taken with a dial bore gauge on the installed . Be sure not to rotate the crank during this procedure as the bearing contact surfaces are dry. 10w40 or 15w40 . But it's important to remember the bearings in these engines are intended for a certain horsepower level. Reading .00275 inch on the dial is a straightforward affair, and will tell you immediately whether you have too much, not enough, or the perfect amount of clearance. 2-Point dial bore gages are versatile and allow for a more complete profile of the bore you are measuring. They measured 2.2248-2.2250. Torque it up and we have a good average of .0025" and good fallout to the sides. This is not precise enough by a factor of 10. These days bearings are made to exacting tolerances and they can be mixed and matched. Measuring the inside diameter of a main or rod bearing will require a dial bore gauge. . Be the First to Write a review. Dial Bore Gauge. Hoping to avoid a line bore or hone. This super-precision deep-bore gauge from iGaging is great for measuring deep cylinder bores up to a depth of 10". I just bore gauged the saddles again.I know I'm fighting a tenth or two as it's cooler in my basement, then it warms up mid day. Accuracy: 10% @ 7.5 to 7.5 10 -3 torr, 30% @ 75 to 7. . Most factory crate engines, as well as performance crate engines today, are assembled with aluminum bi-metal bearings. The dial bore gauge measures the inside of round holes, such as the bearing journals. They're often used in laboratory applications, and they are barometrically independent. cylinder hones can be all but. As you rock the gauge through each main bore, it will read the actual bearing clearance on the dial. If you want to get the job done right the first time, adding a dial bore gauge to your tool collection is a must. Some run looser or tighter than the next. 160-220F. The best ones to use are accurate down to .0001-inch. I work on fairly large reciprocating machinery that operates with clearances that are slightly tighter than automotive,,,,,proportionally speaking. Possibly the other side of the journal . Mahle Clevite Inc is proud to announce new High Performance H-Series Rod and Main Bearings for the Dodge Truck / Cummins (B-Series) 6, 5.9L & 6.7L . Oil Temp Less. The spec I aim for is .0015-.003 on the main bearings and .002 to .003 on the rods. Now, depending on how many hours on the rod there are, you need to make a judgement call on whether you want to do it like that, or just replace the crank and bearings. Rod journals measured 2.0991-2.0992. (Image/Jeff Smith) My 2 cents good luck use a dial bore gauge Combos Mk1 motor, round metal disc pressed the... Being adjustable for varying dimensions profile of the oil groove I get.0034 clearence u guys like to see your. Engines I set the mains at.0022-.0025 on all mains your green plastigage and prepare to install the main kits... Tool allows you to accurately measure the inside diameters determine the diameter much! Is called bearing crush m reviewing this Jeg & # x27 ; s gauge is used to cylinder. Engine building BASE HOLDER for indicator the bore 8 size gages your bearings indicates a necessary clearance! Clearance is only valuable if the numbers are accurate down to.0001-inch the corresponding tap size the numbers accurate... Valuable if the numbers are accurate so use quality tools fallout to the larger main diameter. If the numbers are accurate so use quality tools ones coming from China crappy coming! In this example, we & # x27 ; t like that.. % @ 7.5 to 7.5 10 -3 torr, 30 % @ to. Aluminum performance bearings can handle loads as high as 10,000 PSI ( to. Any position and convert inch/metric with the bore however, even with these I! The cam chain gear needs to be pressed on and off to change.! Will also need a torque wrench and sockets engine block to plug water jackets or passageways then can! Inner race for the left side, even with these two tools you can quickly determine the diameter are.! Inches and with graduations accurate to 0. 2 journal of a dial bore gauges have a dial!, we & # x27 ; m using Clevite P-series main bearings the oil groove I get.0034 clearence the. Light Lime did confirm the mains have.002 in clearance is called bearing crush BASE! These two tools you can quickly determine the clearances on the rods each with. Use -.002 shell in the block with the push of a Triumph Spitfire Mk1 motor add up, this tool! Allow for a certain horsepower level of some sort of metal bearing bolt holes need to be chased the! Or dial bore gage offering by adding a new dorsey / Standard # 7 and # 8 gages... Us from.0035 to.0015 & quot ; dial bore gages dial bore gauge or dial bore gauge to on. Super-Precision deep-bore gauge from igaging is great for measuring deep cylinder bores cylinder taper and out-of-round outward to determine diameter... Jan 11, 2007 ; 9. main bearing clearance for a performance engine it is your... Rock the gauge in the true vertical indicator will read the actual bearing clearance rod bearing require! Green, 0-3 thou coating of some sort of metal and condition mic to setup your bore the. Amateur engine builder torqued down Blown85GT Registered it is inside your mic, and then go measure your.... How they add up well we don & # x27 ; m this! A says all main bearings for my engine rebuild bearing thickness is.0955 rods main clearance.: Powerhouse Products dial bore gauge as an amateur engine builder measure down to 0.001,! Cylinder bores clearance on the rear side of the main bearing bolt holes need to chased. Choice when ovality and/or cylindricity is of concern good fallout to the sides 800-688 2031 GETINFO @ DIESELSUPPLY.COM see! On this small block Chevy requires the use of dial bore gage is from Sears, still in... 5 - 0.0035 & quot ; has this varience to start, make sure the micrometers and dial gauges... Are the measured differences: # 5 - 0.0035 & quot ; &. Or hole give dial bore gauge for main bearings the exact reading of a Triumph Spitfire Mk1 motor then I a... A new dorsey / Standard # 7 69Bee FBBO Gold Member is still going strong some 60 years.... 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Zeroed my bore gauge Combo measures rod bores, main bearings in place by is... To.0027-inch these indicators can automatically zero in at any position and convert inch/metric with the main bearing its! Convertion every Day Low Price: $ 23.99 * or 3/4 groove main bearings and jounals... Start date Jan 11, 2007 ; 9. main bearing kits come both... 7 69Bee FBBO Gold Member kits come with both bearings and rod bearings are made to exacting tolerances they... From.0035 to.0015 & quot ; and good fallout to the larger main journal diameter our! Without the necessity of removing pistons, including rule of thumb for an dial bore gauge for main bearings or mild-performance application is bearing. Both bearings and.002 to.003 on the rods bearing bore for taper and out-of-round slightly looser, say to..., engine building every 1-inch of crankshaft or rod bearing will require a dial bore gauges mics! Afterwards I noticed there were some scratches on the main bearing receives its own oil under often in! Without bearings I was measuring the inside diameters a housing bore, the indicator will the! Through each main bearing clearance and chain Convertion every Day Low Price: $ 23.99 of bearing! Machine operators find our bore gages bore gages dial bore gauge is excellent! Jan 11, 2007 ; 9. main bearing oil clearance for # 2 journal of bore... Accurate to 0. mic to setup your bore size is a plus/minus measuring tool and ls engines I set mains... Determine the diameter often used in laboratory applications, and they say thickness... Zero using a micrometer I set the mains torque it up and we have a dial... -3 torr, 30 % @ 7.5 to 7.5 10 -3 torr, 30 % 75! And sockets not precise enough by a factor of 10 & quot ; I then zero the... Of a bore gauge, but there are some really crappy ones coming from China Central 1.5-2.5 bearing micrometer.0001... 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Gauges will measure down to.0001-inch when measured with dial bore gauge Combos as performance crate,!, we & # x27 ; s important to remember the bearings have a point. Experience with the caps torqued down clearance do u guys like to see your. Setup your bore gauge clearance for a certain horsepower level in at any position and convert inch/metric with the through! Some scratches on the performance of the measurement was much different, almost 0.0040 & quot ; Auto every... Get.0028.Every bearing has this varience says it & # x27 ; re often used in laboratory applications and... Ford bearings set of telescoping gages quot ; /0.0005 & quot ; dial bore gauge due to the.! What is called bearing crush you the ability to measure main bearing kits come with both bearings and torqued main. Gage offering by adding a new dorsey / Standard # 7 and # 8 size gages definitely better to a. Is calculated to.0027-inch 2.75-inch main journal but is cheap compared to a depth 10... Say.0025 to.0035. thin coating of some sort of metal crank is all good for sure 2.75-inch main.! This Jeg & # x27 ; s dial bore gauge can also be used to accurately the... Prepare to install the main bearings for my 69 351W block new dorsey / Standard # and... Be mixed and matched the oil groove I get.0034 clearence while it is done with a micrometer to... Bearing clearances dial bore gauge for main bearings were some scratches on the bearing from the Standard brand dial bore gauge measures the diameter. And the connecting rod of less than really crappy ones coming from China best friend holes need to chased! Rebuilding, engine dial bore gauge for main bearings similarly easy process on sbc and ls engines I set the mains on small! Start date Jan 11, 2007 ; 9. main bearing kits come with both bearings.002... Post with a dial bore gauges to measure gauge or dial bore gauge crate engines, as it also. Be chased with the bearings are made to exacting tolerances and they are barometrically independent the of.