Main and rod bearing clearances??
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On The Tree
Joined: Jan 2002
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From: antioch
Main and rod bearing clearances?? Does any one know how much clearance I should have on my main and rod bearings. Im building my short block and want to make sure everything is in spec. Any help will be appreciated
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Joined: Nov 2001
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From: Troy, AL.
Re: Main and rod bearing clearances?? Engine Mechanical Specifications (LS1)
General Data
Engine Type V8
Displacement 5.7L-5665 cc 346 CID
Bore 99.0 mm 3.898 in
Stroke 92.0 mm 3.622 in
Compression Ratio 10.1:1
Firing Order 1-8-7-2-6-5-4-3
Spark Plug Type 41-931
Spark Plug Gap 1.524 mm 0.06 in
Lubrication System 5.678 Liters 6.0 Quarts
Oil Capacity (without Oil Filter Change) 6.0 Quarts 5.7 Liters
Oil Capacity (with Oil Filter Change) 6.5 Quarts 6.151 Liters
Oil Pressure (Minimum -- Hot) 41.4 kPa at 1,000 engine RPM 6.0 psig at 1,000 engine RPM
Oil Pressure (Minimum- Hot) engine RPM 124.11 kPa at 2,000 engine RPM 165.48 kPa at 4,000 engine RPM
engine RPM 18.0 psig at 2,000 engine RPM 24.0 psig at 4,000 engine RPM
Oil Type Mobil(E) 5W-30 Synthetic or Equivalent
Camshaft
Camshaft End Play 0.025-0.305 mm 0.001-0.012 in
Camshaft Journal Diameter 54.99-55.04 mm 2.164-2.166 in
Camshaft Journal Diameter Out-of-Round 0.025 mm 0.001 in
Camshaft Lobe Lift (Intake) 7.04 mm 0.277 in
Camshaft Lobe Lift (Exhaust) 7.13 mm 0.281 in
Camshaft Runout (Measured at the Intermediate Journals) 0.05 mm 0.002 in
Connecting Rod
Connecting Rod Bearing Bore Diameter 56.505-56.525 mm 2.224-2.225 in
Connecting Rod Bearing Bore Out-of-Round (Production) 0.004 mm 0.00015 in
Connecting Rod Bearing Bore Out-of-Round (Service Limit) 0.008 mm 0.0003 in
Connecting Rod Bearing Clearance (Production) 0.015-0.063 mm 0.0006-0.00248 in
Connecting Rod Bearing Clearance (Service Limit) 0.015-0.076 mm 0.0006-0.003 in
Connecting Rod Side Clearance 0.11-0.51 mm 0.00433-0.02 in
Crankshaft
Crankshaft Bearing Clearance (Production) 0.018-0.054 mm 0.0007-0.00212 in
Crankshaft Connecting Rod Journal Diameter (Production) 53.318-53.338 mm 2.0991-2.0999 in
Crankshaft Connecting Rod Journal Diameter (Service Limit) 53.308 mm (Minimum) 2.0987 in (Minimum)
Crankshaft Connecting Rod Journal Taper (Production) 0.005 mm (Maximum for 1/2 of Journal Length) 0.0002 in (Maximum for 1/2 of Journal Length)
Crankshaft Connecting Rod Journal Taper (Service Limit) 0.01 mm (Maximum) 0.0004 in (Maximum)
Crankshaft Connecting Rod Journal Out-of-Round (Production) 0.005 mm 0.0002 in
Crankshaft Connecting Rod Journal Out-of-Round (Service Limit) 0.01 mm 0.0004 in
Crankshaft End Play 0.04-0.2 mm 0.0015-0.0078 in
Crankshaft Main Journal Diameter (Production) 64.993-65.007 mm 2.558-2.559 in
Crankshaft Main Journal Diameter (Service Limit) 64.993 mm (Minimum) 2.558 in (Minimum)
Crankshaft Main Journal Out-of-Round (Production) 0.003 mm 0.000118 in
Crankshaft Main Journal Out-of-Round (Service Limit) 0.008 mm 0.0003 in
Crankshaft Main Journal Taper (Production) 0.01 mm 0.0004 in
Crankshaft Main Journal Taper (Service Limit) 0.02 mm 0.00078 in
Crankshaft Reluctor Ring Runout (Measured 1.0 mm (0.04 in) Below Tooth Diameter) 0.25 mm 0.01 in
Crankshaft Runout (at Rear Flange) 0.05 mm 0.002 in
Crankshaft Thrust Wall Runout 0.025 mm 0.001 in
Crankshaft Thrust Wall Width (Production) 26.14-26.22 mm 1.029-1.032 in
Crankshaft Thrust Wall Width (Service) 26.32 mm (Maximum) 1.036 in (Maximum)
Cylinder Bore
Cylinder Bore Diameter 99.0-99.018 mm 3.897-3.898 in
Cylinder Bore Taper Thrust Side 0.018 mm (Maximum) 0.0007 in (Maximum)
Cylinder Head
Cylinder Head Engine Block Deck Flatness (Measured within a 152.4 mm (6.0 in) area) 0.11 mm 0.004 in
Cylinder Head Engine Block Deck Flatness (Measuring the Overall Length of the Cylinder Head) 0.22 mm 0.008 in
Cylinder Head Exhaust Manifold Deck Flatness 0.22 mm 0.008 in
Cylinder Head Intake Manifold Deck Flatness 0.22 mm 0.008 in
Cylinder Head Height (Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface) 120.2 mm (Minimum) 4.732 in (Minimum)
Engine Block
Camshaft Bearing Bore Diameters 55.063-55.088 mm 2.168-2.169 in
Engine Block Cylinder Head Deck Surface Flatness (Measured within a 152.4 mm (6.0 in) area) 0.11 mm 0.004 in
Engine Block Cylinder Head Deck Surface Flatness (Measuring the Overall Length of the Block Deck) 0.22 mm 0.008 in
Engine Block Cylinder Head Deck Height (Measuring from the Centerline of Crankshaft to the Deck Face) 234.57-234.82 mm 9.235-9.245 in
Main Bearing Bore Diameter (Production) 69.871-69.889 mm 2.750-2.751 in
Valve Lifter Bore Diameter (Production) 21.417-21.443 mm 0.843-0.844 in
Intake Manifold
Intake Manifold Cylinder Head Deck Flatness (Measured at Gasket Sealing Surfaces) 0.5 mm 0.02 in
Oil Pan and Front/Rear Cover Alignment
Oil Pan to Rear of Engine Block Alignment (at Transmission Bellhousing Mounting Surface) 0.0-0.25 mm (Maximum) 0.0-0.01 in (Maximum)
Front Cover Alignment (at Oil Pan Surface) 0.0-0.5 mm 0.0-0.02 in
Rear Cover Alignment (at Oil Pan Surface) 0.0-0.5 mm 0.0-0.02 in
Piston
Piston Outside Diameter (at Size Point) 98.964-98.982 mm 3.8962-3.8969 in
Piston to Bore Clearance (Production) 0.018-0.054 mm 0.0007-0.00212 in
Piston to Bore Clearance (Service Limit) 0.018-0.054 mm (Maximum) 0.0007-0.00212 in (Maximum)
Piston Pin
Piston Pin Clearance to Piston Bore (Production) 0.01-0.02 mm 0.0004-0.00078 in
Piston Pin Clearance to Piston Bore (Service Limit) 0.01-0.02 mm (Maximum) 0.0004-0.00078 in (Maximum)
Piston Pin Diameter 23.997-24.0 mm 0.9447-0.9448 in
Piston Pin Fit in Connecting Rod 0.02-0.043 mm (Interference) 0.00078-0.00169 in (Interference)
Piston Rings
Piston Compression Ring End Gap (Production Top) (Measured in Cylinder Bore) 0.23-0.38 mm 0.009-0.0149 in
Piston Compression Ring End Gap (Production--2nd) (Measured in Cylinder Bore) 0.44-0.64 mm 0.0173-0.0251 in
Piston Oil Ring End Gap (Production) (Measured in Cylinder Bore) 0.18-0.69 mm 0.007-0.0271 in
Piston Compression Ring End Gap (Service-Top) (Measured in Cylinder Bore) 0.23-0.38 mm (Maximum) 0.009-0.01496 in (Maximum)
Piston Compression Ring End Gap (Service--2nd)(Measured in Cylinder Bore) 0.44-0.64 mm (Maximum) 0.0173-0.0251 in (Maximum)
Piston Oil Ring End Gap (Service Limit) (Measured in Cylinder Bore) 0.18-0.69 mm (Maximum) 0.007-0.0271 in (Maximum)
Piston Compression Ring Groove Clearance (Production--Top) 0.04-0.085 mm 0.00157-0.003346 in
Piston Compression Ring Groove Clearance (Production--2nd) 0.04-0.08 mm 0.00157-0.003149 in
Piston Oil Ring Groove Clearance (Production) 0.01-0.22 mm 0.0004-0.00866 in
Piston Oil Ring Groove Clerance (Production)
Piston Compression Ring Groove Clearance (Service--Top) 0.04-0.085 mm (Maximum) 0.00157-0.003346 in (Maximum)
Piston Compression Ring Groove Clearance (Service--2nd) 0.04-0.08 mm (Maximum) 0.00157-0.003149 in (Maximum)
Piston Oil Ring Groove Clearance (Service Limit) 0.01-0.22 mm (Maximum) 0.0004-0.00866 in (Maximum)
Valve System
Valve Lifter Hydraulic Roller
Valve Rocker Arm Ratio 1.70:1
Valve Lash Net Lash--No Adjustment
Valve Face Angle 45 degrees
Valve Seat Angle 46 degrees
Valve Seat Runout 0.05 mm (Maximum) 0.002 in (Maximum)
Valve Seat Width (Intake) 1.02 mm 0.04 in
Valve Seat Width (Exhaust) 1.78 mm 0.07 in
Valve Stem Clearance (Production--Intake) 0.025-0.066 mm 0.001-0.0026 in
Valve Stem Clearance (Production--Intake) 0.025-0.066 mm 0.001-0.0026 in
Valve Stem Clearance (Production--Exhaust) 0.025-0.066 mm 0.001-0.0026 in
Valve Stem Clearance (Service--Intake) 0.093 mm (Maximum) 0.0037 in (Maximum)
Valve Stem Clearance (Service--Exhaust) 0.093 mm (Maximum) 0.0037 in (Maximum)
Valve Stem Diameter (Production) 7.955-7.976 mm 0.313-0.314 in
Valve Stem Diameter (Service) 7.9 mm (Minimum) 0.311 in (Minimum)
Valve Spring Free Length 52.9 mm 2.08 in
Valve Spring Pressure (Closed) 340 N at 45.75 mm 76 lb at 1.80 in
Valve Spring Pressure (Open) 980 N at 33.55 mm 220 lb at 1.32 in
Valve Spring Installed Height (Intake) 45.75 mm 1.8 in
Valve Spring Installed Height (Exhaust) 45.75 mm 1.8 in
Valve Lift (Intake) 11.99 mm 0.472 in
Valve Lift (Exhaust) 12.15 mm 0.479 in
Valve Guide Installed Height (Measured from the Cylinder Head Spring Seat Surface to the Top of the Valve Guide) 17.32 mm 0.682 in
Valve Stem Oil Seal Installed Height (Measured from the ValveSpring Shim to Top Edge of Seal Body) 18.1-19.1 mm 0.712-0.752 in
<img src="gr_stretch.gif" border="0">
[ February 18, 2002: Message edited by: Tums ]</p>
General Data
Engine Type V8
Displacement 5.7L-5665 cc 346 CID
Bore 99.0 mm 3.898 in
Stroke 92.0 mm 3.622 in
Compression Ratio 10.1:1
Firing Order 1-8-7-2-6-5-4-3
Spark Plug Type 41-931
Spark Plug Gap 1.524 mm 0.06 in
Lubrication System 5.678 Liters 6.0 Quarts
Oil Capacity (without Oil Filter Change) 6.0 Quarts 5.7 Liters
Oil Capacity (with Oil Filter Change) 6.5 Quarts 6.151 Liters
Oil Pressure (Minimum -- Hot) 41.4 kPa at 1,000 engine RPM 6.0 psig at 1,000 engine RPM
Oil Pressure (Minimum- Hot) engine RPM 124.11 kPa at 2,000 engine RPM 165.48 kPa at 4,000 engine RPM
engine RPM 18.0 psig at 2,000 engine RPM 24.0 psig at 4,000 engine RPM
Oil Type Mobil(E) 5W-30 Synthetic or Equivalent
Camshaft
Camshaft End Play 0.025-0.305 mm 0.001-0.012 in
Camshaft Journal Diameter 54.99-55.04 mm 2.164-2.166 in
Camshaft Journal Diameter Out-of-Round 0.025 mm 0.001 in
Camshaft Lobe Lift (Intake) 7.04 mm 0.277 in
Camshaft Lobe Lift (Exhaust) 7.13 mm 0.281 in
Camshaft Runout (Measured at the Intermediate Journals) 0.05 mm 0.002 in
Connecting Rod
Connecting Rod Bearing Bore Diameter 56.505-56.525 mm 2.224-2.225 in
Connecting Rod Bearing Bore Out-of-Round (Production) 0.004 mm 0.00015 in
Connecting Rod Bearing Bore Out-of-Round (Service Limit) 0.008 mm 0.0003 in
Connecting Rod Bearing Clearance (Production) 0.015-0.063 mm 0.0006-0.00248 in
Connecting Rod Bearing Clearance (Service Limit) 0.015-0.076 mm 0.0006-0.003 in
Connecting Rod Side Clearance 0.11-0.51 mm 0.00433-0.02 in
Crankshaft
Crankshaft Bearing Clearance (Production) 0.018-0.054 mm 0.0007-0.00212 in
Crankshaft Connecting Rod Journal Diameter (Production) 53.318-53.338 mm 2.0991-2.0999 in
Crankshaft Connecting Rod Journal Diameter (Service Limit) 53.308 mm (Minimum) 2.0987 in (Minimum)
Crankshaft Connecting Rod Journal Taper (Production) 0.005 mm (Maximum for 1/2 of Journal Length) 0.0002 in (Maximum for 1/2 of Journal Length)
Crankshaft Connecting Rod Journal Taper (Service Limit) 0.01 mm (Maximum) 0.0004 in (Maximum)
Crankshaft Connecting Rod Journal Out-of-Round (Production) 0.005 mm 0.0002 in
Crankshaft Connecting Rod Journal Out-of-Round (Service Limit) 0.01 mm 0.0004 in
Crankshaft End Play 0.04-0.2 mm 0.0015-0.0078 in
Crankshaft Main Journal Diameter (Production) 64.993-65.007 mm 2.558-2.559 in
Crankshaft Main Journal Diameter (Service Limit) 64.993 mm (Minimum) 2.558 in (Minimum)
Crankshaft Main Journal Out-of-Round (Production) 0.003 mm 0.000118 in
Crankshaft Main Journal Out-of-Round (Service Limit) 0.008 mm 0.0003 in
Crankshaft Main Journal Taper (Production) 0.01 mm 0.0004 in
Crankshaft Main Journal Taper (Service Limit) 0.02 mm 0.00078 in
Crankshaft Reluctor Ring Runout (Measured 1.0 mm (0.04 in) Below Tooth Diameter) 0.25 mm 0.01 in
Crankshaft Runout (at Rear Flange) 0.05 mm 0.002 in
Crankshaft Thrust Wall Runout 0.025 mm 0.001 in
Crankshaft Thrust Wall Width (Production) 26.14-26.22 mm 1.029-1.032 in
Crankshaft Thrust Wall Width (Service) 26.32 mm (Maximum) 1.036 in (Maximum)
Cylinder Bore
Cylinder Bore Diameter 99.0-99.018 mm 3.897-3.898 in
Cylinder Bore Taper Thrust Side 0.018 mm (Maximum) 0.0007 in (Maximum)
Cylinder Head
Cylinder Head Engine Block Deck Flatness (Measured within a 152.4 mm (6.0 in) area) 0.11 mm 0.004 in
Cylinder Head Engine Block Deck Flatness (Measuring the Overall Length of the Cylinder Head) 0.22 mm 0.008 in
Cylinder Head Exhaust Manifold Deck Flatness 0.22 mm 0.008 in
Cylinder Head Intake Manifold Deck Flatness 0.22 mm 0.008 in
Cylinder Head Height (Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface) 120.2 mm (Minimum) 4.732 in (Minimum)
Engine Block
Camshaft Bearing Bore Diameters 55.063-55.088 mm 2.168-2.169 in
Engine Block Cylinder Head Deck Surface Flatness (Measured within a 152.4 mm (6.0 in) area) 0.11 mm 0.004 in
Engine Block Cylinder Head Deck Surface Flatness (Measuring the Overall Length of the Block Deck) 0.22 mm 0.008 in
Engine Block Cylinder Head Deck Height (Measuring from the Centerline of Crankshaft to the Deck Face) 234.57-234.82 mm 9.235-9.245 in
Main Bearing Bore Diameter (Production) 69.871-69.889 mm 2.750-2.751 in
Valve Lifter Bore Diameter (Production) 21.417-21.443 mm 0.843-0.844 in
Intake Manifold
Intake Manifold Cylinder Head Deck Flatness (Measured at Gasket Sealing Surfaces) 0.5 mm 0.02 in
Oil Pan and Front/Rear Cover Alignment
Oil Pan to Rear of Engine Block Alignment (at Transmission Bellhousing Mounting Surface) 0.0-0.25 mm (Maximum) 0.0-0.01 in (Maximum)
Front Cover Alignment (at Oil Pan Surface) 0.0-0.5 mm 0.0-0.02 in
Rear Cover Alignment (at Oil Pan Surface) 0.0-0.5 mm 0.0-0.02 in
Piston
Piston Outside Diameter (at Size Point) 98.964-98.982 mm 3.8962-3.8969 in
Piston to Bore Clearance (Production) 0.018-0.054 mm 0.0007-0.00212 in
Piston to Bore Clearance (Service Limit) 0.018-0.054 mm (Maximum) 0.0007-0.00212 in (Maximum)
Piston Pin
Piston Pin Clearance to Piston Bore (Production) 0.01-0.02 mm 0.0004-0.00078 in
Piston Pin Clearance to Piston Bore (Service Limit) 0.01-0.02 mm (Maximum) 0.0004-0.00078 in (Maximum)
Piston Pin Diameter 23.997-24.0 mm 0.9447-0.9448 in
Piston Pin Fit in Connecting Rod 0.02-0.043 mm (Interference) 0.00078-0.00169 in (Interference)
Piston Rings
Piston Compression Ring End Gap (Production Top) (Measured in Cylinder Bore) 0.23-0.38 mm 0.009-0.0149 in
Piston Compression Ring End Gap (Production--2nd) (Measured in Cylinder Bore) 0.44-0.64 mm 0.0173-0.0251 in
Piston Oil Ring End Gap (Production) (Measured in Cylinder Bore) 0.18-0.69 mm 0.007-0.0271 in
Piston Compression Ring End Gap (Service-Top) (Measured in Cylinder Bore) 0.23-0.38 mm (Maximum) 0.009-0.01496 in (Maximum)
Piston Compression Ring End Gap (Service--2nd)(Measured in Cylinder Bore) 0.44-0.64 mm (Maximum) 0.0173-0.0251 in (Maximum)
Piston Oil Ring End Gap (Service Limit) (Measured in Cylinder Bore) 0.18-0.69 mm (Maximum) 0.007-0.0271 in (Maximum)
Piston Compression Ring Groove Clearance (Production--Top) 0.04-0.085 mm 0.00157-0.003346 in
Piston Compression Ring Groove Clearance (Production--2nd) 0.04-0.08 mm 0.00157-0.003149 in
Piston Oil Ring Groove Clearance (Production) 0.01-0.22 mm 0.0004-0.00866 in
Piston Oil Ring Groove Clerance (Production)
Piston Compression Ring Groove Clearance (Service--Top) 0.04-0.085 mm (Maximum) 0.00157-0.003346 in (Maximum)
Piston Compression Ring Groove Clearance (Service--2nd) 0.04-0.08 mm (Maximum) 0.00157-0.003149 in (Maximum)
Piston Oil Ring Groove Clearance (Service Limit) 0.01-0.22 mm (Maximum) 0.0004-0.00866 in (Maximum)
Valve System
Valve Lifter Hydraulic Roller
Valve Rocker Arm Ratio 1.70:1
Valve Lash Net Lash--No Adjustment
Valve Face Angle 45 degrees
Valve Seat Angle 46 degrees
Valve Seat Runout 0.05 mm (Maximum) 0.002 in (Maximum)
Valve Seat Width (Intake) 1.02 mm 0.04 in
Valve Seat Width (Exhaust) 1.78 mm 0.07 in
Valve Stem Clearance (Production--Intake) 0.025-0.066 mm 0.001-0.0026 in
Valve Stem Clearance (Production--Intake) 0.025-0.066 mm 0.001-0.0026 in
Valve Stem Clearance (Production--Exhaust) 0.025-0.066 mm 0.001-0.0026 in
Valve Stem Clearance (Service--Intake) 0.093 mm (Maximum) 0.0037 in (Maximum)
Valve Stem Clearance (Service--Exhaust) 0.093 mm (Maximum) 0.0037 in (Maximum)
Valve Stem Diameter (Production) 7.955-7.976 mm 0.313-0.314 in
Valve Stem Diameter (Service) 7.9 mm (Minimum) 0.311 in (Minimum)
Valve Spring Free Length 52.9 mm 2.08 in
Valve Spring Pressure (Closed) 340 N at 45.75 mm 76 lb at 1.80 in
Valve Spring Pressure (Open) 980 N at 33.55 mm 220 lb at 1.32 in
Valve Spring Installed Height (Intake) 45.75 mm 1.8 in
Valve Spring Installed Height (Exhaust) 45.75 mm 1.8 in
Valve Lift (Intake) 11.99 mm 0.472 in
Valve Lift (Exhaust) 12.15 mm 0.479 in
Valve Guide Installed Height (Measured from the Cylinder Head Spring Seat Surface to the Top of the Valve Guide) 17.32 mm 0.682 in
Valve Stem Oil Seal Installed Height (Measured from the ValveSpring Shim to Top Edge of Seal Body) 18.1-19.1 mm 0.712-0.752 in
<img src="gr_stretch.gif" border="0">
[ February 18, 2002: Message edited by: Tums ]</p>
Re: Main and rod bearing clearances?? Those are fine for a stock application. For high performance, I'd suggest .002 to .035 for both the rods and mains. This is what ARE recommends. Trust me, you want the clearances too tight. I nuked a couple of brand new mains that were too tight (.001 to .015).
Thread Starter
On The Tree
Joined: Jan 2002
Posts: 158
Likes: 0
From: antioch
Re: Main and rod bearing clearances?? So anywhere between .002 and .035 should be good on both. What exactly am I supposed to do if they are too tight anyways?? Thanks for the responses
TECH Resident
Joined: Nov 2001
Posts: 993
Likes: 0
From: Troy, AL.
Re: Main and rod bearing clearances?? [quote]Originally posted by GeorgeC:
<strong>Please tell me you did not sit there and type all that in... <img src="gr_stretch.gif" border="0"> </strong><hr></blockquote>
Nope, copied and pasted LOL. Have it saved just incase someone needs it. Its hard to give specs when people do not explain what they are doing, so I just give them a copy of the production specs. <img src="gr_images/icons/wink.gif" border="0">
<strong>Please tell me you did not sit there and type all that in... <img src="gr_stretch.gif" border="0"> </strong><hr></blockquote>
Nope, copied and pasted LOL. Have it saved just incase someone needs it. Its hard to give specs when people do not explain what they are doing, so I just give them a copy of the production specs. <img src="gr_images/icons/wink.gif" border="0">
Re: Main and rod bearing clearances?? [quote]Originally posted by Reckless:
<strong>Those are fine for a stock application. For high performance, I'd suggest .002 to .035 for both the rods and mains. This is what ARE recommends. Trust me, you want the clearances too tight. I nuked a couple of brand new mains that were too tight (.001 to .015).</strong><hr></blockquote>
Todd, you meant to say you DON'T want to run the motor too tight right? That is what ARE does.
<strong>Those are fine for a stock application. For high performance, I'd suggest .002 to .035 for both the rods and mains. This is what ARE recommends. Trust me, you want the clearances too tight. I nuked a couple of brand new mains that were too tight (.001 to .015).</strong><hr></blockquote>
Todd, you meant to say you DON'T want to run the motor too tight right? That is what ARE does.
Trending Topics
Re: Main and rod bearing clearances?? Your right John...my bad <img src="gr_emb.gif" border="0"> Have a reputabler machine shop check the clearances with a micrometer. Plastigauge is OK, but usually reads on the "tight" side. For instance, my machine shop set all clearances at .003, but when I checked with Plastigauge, they were barely .002.
If the clearances are too tight, you have the machine shop polish a little off the crank journals to get the clearances correct. This stuff is best left to a machine shop that does high performance engines IMO.
Todd
If the clearances are too tight, you have the machine shop polish a little off the crank journals to get the clearances correct. This stuff is best left to a machine shop that does high performance engines IMO.
Todd
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