Engine rebuild

[Hagar1]

So .... I've started on the hemi rebuild, back in the day, I used to clearance the small block chevys at about .002" and found a couple of benefits. Reduced friction and less potential for scuffed pistons.
Does anyone see a problem with doing similar on the hemi?

 

[Ken226]

If your talking about the main bearing clearance, .002" is right about the middle of the spec. Not too tight and not too loose.

2 thousandths seems to be about what most aim for on the cylinder wall clearance too. For cast pistons anyway.

 

[Hagar1]

If your talking about the main bearing clearance, .002" is right about the middle of the spec. Not too tight and not too loose.

2 thousandths seems to be about what most aim for on the cylinder wall clearance too. For cast pistons anyway.

Thanks!

 

[Hagar1]

Well, I'm on my way with the build part. I should keep a camera handy to keep a photo journal of the process. At my age, I probably won't be doing a bunch more of these.
Yes, I am documenting all the clearances etc.

 

[Ken226]

Please do. I'd love to see it when you finish the project.

 

[Wild one]

Well, I'm on my way with the build part. I should keep a camera handy to keep a photo journal of the process. At my age, I probably won't be doing a bunch more of these.
Yes, I am documenting all the clearances etc.

Crappy Tire still has the Haynes manuals in stock,and they might be a worth while investment for clearances,as they do have differant clearances depending on which rod bearing you're checking the clearance on
I copied this from another site,but it'll get you in the ballpark.

Stock clearences.
Crank mains. .0009-.002 Thrust .002-011
Rods .0007-.0029
Ring gap .0118-.0157 top
.0137-.0236 second
.0079-.028 oil control steels

 

[Hagar1]

Crappy Tire still has the Haynes manuals in stock,and they might be a worth while investment for clearances,as they do have differant clearances depending on which rod bearing you're checking the clearance on
I copied this from another site,but it'll get you in the ballpark.

Stock clearences.
Crank mains. .0009-.002 Thrust .002-011
Rods .0007-.0029
Ring gap .0118-.0157 top
.0137-.0236 second
.0079-.028 oil control steels

Thanks for that! I subscribed to the Mitchell diy program and I have the Haynes manual along with the "New Hemi Engine" by Larry Shepard. My ribbon feeler guages required some searching but I tracked them down. I bought so fresh plastiguage both green and red. Dug out my micrometers and I'm just having a ball! I had to file all the rings because they were on the tight side. Better a bit loose than too tight. I ran a wire through all the oil galleries and then ran a "bottle brush" through everything. Tomorrow is crankshaft day and maybe install the piston and rod assemblies. I need to make up a tool to act as a "stop" for #1 piston so I can properly find TDC, then I'll install my degree wheel.
I'm having fun ........ no service manager breathing down my neck with the "when will it be ready?"

 

[crackerjack1957]

Found this 1 elsewhere also...........

SPECIFICATIONS
Eagle Engine - 90° V-8 OHV
Metric / Standard
Displacement 5.7 Liters / 348 CID
Bore 99.5 mm / 3.92 in.
Stroke 90.9 mm / 3.58 in.
Compression Ratio 10.5:1
Max. Variation Between Cylinders 25%
Firing Order 1-8-4-3-6-5-7-2
Lubrication Pressure Feed - Full Flow Filtration
Cooling System Liquid Cooled
Cylinder Block Cast Iron
Cylinder Head Aluminum
Crankshaft Nodular Iron
Camshaft Cast Iron
Pistons Aluminum Alloy
Connecting Rods Powdered Metal

CYLINDER BLOCK
Metric / Standard
Cylinder Bore Diameter 99.50 mm / 3.92 in.
Out of Round (MAX) 0.0076 mm / 0.0003 in.
Taper (MAX) 0.0127 mm / 0.0005 in.
Lifter Bore Diameter 21.45 - 21.425 mm / 0.8444 - 0.8435 in.

PISTONS
Metric / Standard
Clearance
Measured at 38.0 mm / 1.5 in. Below Deck 0.031 - 0.058 mm / 0.012 - 0.023 in.
Ring Groove Diameter
Top Groove 90.4 - 90.6 mm / 3.56 - 3.57 in.
Second Groove 88.4 - 88.7 mm / 3.48 - 3.49 in.
Weight 413 grams 14.56 oz
Piston Length 53.3 mm / 2.10 in.
Ring Groove Width
No. 1 1.23 - 1.26 mm / 0.048 - 0.0496 in
No. 2 1.23 - 1.25 mm / 0.048 - 0.0492 in.
No. 3 2.03 - 2.05 mm / 0.079 - 0.080 in.

PISTON PINS
Metric / Standard
Clearance In Piston 0.005 - 0.014 mm / 0.0001 - 0.0005 in.
Diameter 24.004 - 24.007 mm / 0.945 - 0.9451 in.
Length 62.99 - 63.21 mm / 2.47 - 2.48 in.

PISTON RINGS
Metric / Standard
Ring Gap
Top Compression Ring 0.40 - 0.55 mm / 0.015 - 0.021 in.
Second Compression Ring 0.24 - 0.51 mm / 0.009 - 0.020 in.
Oil Control Rails 0.15 - 0.66 mm / 0.0059 - 0.0259 in.
Side Clearance
Top Compression Ring 0.04 - 0.09 mm / 0.001 - 0.0035 in.
Second Compression Ring 0.04 - .08 mm / 0.001 - 0.0031 in.
Oil Control Rails 0.06 - 0.21 mm / 0.002 - 0.008 in.
Ring Width
Top Compression Ring 1.17 - 1.19 mm / 0.0460 - 0.0468 in.
Second Compression Ring 1.17 - 1.19 mm / 0.0460 - 0.0468 in.
Oil Control Rails 0.387 - 0.413 mm / 0.015 - 0.016 in.

CONNECTING RODS
Metric / Standard
Piston Pin Bore Diameter 24.014 - 24.024 mm / 0.9454 - 0.9458 in.
Side Clearance 0.10 - 0.35 mm / 0.003 - 0.0137 in.

CRANKSHAFT
Metric / Standard
Main Bearing Journal Diameter 64.988 - 65.012 mm / 2.5585 - 2.5595 in.
Bearing Clearance 0.023 - 0.051 mm / 0.0009 - 0.002 in.
Out of Round (MAX) 0.005 mm / 0.0002 in.
Taper (MAX) 0.003 mm / 0.0001 in.
End Play 0.052 - 0.282 mm / 0.002 - 0.011 in.
End Play (MAX) 0.282 mm / 0.011 in.
Connecting Rod Journal Diameter 53.992 - 54.008 mm / 2.126 in.
Bearing Clearance 0.020 - 0.060 mm / 0.0007 - 0.0023 in.
Out of Round (MAX) 0.005 mm / 0.0002 in.
Taper (MAX) 0.003 mm / 0.0001 in.

CAMSHAFT
Metric / Standard
Bearing Journal Diameter
No. 1 58.2 mm / 2.29 in.
No. 2 57.8 mm / 2.28 in.
No. 3 57.4 mm / 2.26 in.
No. 4 57.0 mm / 2.24 in.
No. 5 43.633 mm / 1.72 in.
Bearing To Journal Clearance Standard
No. 1 0.040 - 0.080 mm / .0015 - .003 in.
No. 2 0.050 -0.090 mm / 0.0019 - .0035 in.
No. 3 0.040 - 0.080 mm / .0015 - .003 in.
No. 4 0.050 - 0.090 mm / 0.0019 - .0035 in.
No. 5 0.040 - 0.080 mm / .0015 - .003 in.
Camshaft End Play .080 - 0.290mm / 0.0031 - 0.0114 in.

VALVE TIMING

Intake
Opens (BTDC) 28.2°
Closes (ATDC) 239.8°
Duration 268°
Exhaust
Opens (BTDC) 274.2°
Closes (ATDC) 15.8°
Duration 290°
Valve Overlap 44°

CYLINDER HEAD
Metric / Standard
Valve Seat Angle 44.5° - 45.0°
Valve Seat Runout (MAX) 0.05 mm / 0.0019 in.
Valve Seat Width (finish)
Intake 1.18 - 1.62 mm / .0638 in.
Exhaust 1.48 - 1.92 mm / 0.0583 - 0.0756 in.
Guide Bore Diameter (Std.) 7.975 - 8.00 mm / 0.3134 - 0.315 in.

HYDRAULIC TAPPETS
Metric / Standard
Body Diameter 21.387 - 21.405 mm / 0.8420 - 0.8427 in.
Clearance (to bore) 0.020 - 0.063 mm / 0.0008 - 0.0025 in.
Dry Lash 3.0 mm (at the valve) / 0.1181 in. (at the valve)

VALVES
Metric / Standard
Face Angle 45.0° - 45.5°
Head Diameter
Intake 50.67 - 50.93 mm / 1.99 - 2.01 in.
Exhaust 39.27 - 39.53 mm / 1.55 - 1.56 in.
Length (overall)
Intake 123.38 - 123.76 mm / 4.857 - 4.872 in.
Exhaust 120.475 - 120.855 mm / 4.743 - 4.758 in.
Stem Diameter
Intake 7.935 - 7.953 mm / 0.312 - 0.313 in.
Exhaust 7.932 - 7.950 mm / 0.312 - 0.313 in.
Stem - to - Guide Clearance
Intake 0.022 - 0.065 mm / 0.0008 - 0.0025 in.
Exhaust 0.025 - 0.065 mm / 0.0009 - 0.0025 in.
Valve Lift ( @ zero lash)
Intake 12.0 mm / 0.472 in.
Exhaust 11.70 mm / 0.460 in.

VALVE SPRING
Metric / Standard
Spring Force (valve closed) 435.0 N +/- 22.0 N @ 45 mm / 97.8 lbs +/- 5.0 lbs. @ 1.771 in.
Spring Force (valve open) 1077.0 N +/- 48.0 N @ 32.6 mm./ 242.0 lbs. +/- 11 lbs. @ 1.283 in.
Free Length (approx). 55.6 mm / 2.189 in.
Number of Coils 7.95
Wire Diameter 4.95 × 4.1 mm / 0.194 - 0.161 in.
Installed Height (spring seat to bottom of retainer) 46.0 mm / 1.81 in.

OIL PUMP
Metric / Standard
Clearance Over Rotors (MAX) 0.095 mm / 0.0038 in.
Outer Rotor to Pump Body Clearance (MAX) .235 mm / 0.009 in.
Tip Clearance Between Rotors (MAX) 0.150 mm / 0.006 in.

OIL PRESSURE
Metric / Standard
At Curb Idle Speed (MIN)* 25 kPa / 4 psi
@ 3000 rpm 170 - 758 kPa / 25 - 110 psi
* CAUTION: If pressure is zero at curb idle, DO NOT run engine.

 

[Hagar1]

Found this 1 elsewhere also...........

SPECIFICATIONS
Eagle Engine - 90° V-8 OHV
Metric / Standard
Displacement 5.7 Liters / 348 CID
Bore 99.5 mm / 3.92 in.
Stroke 90.9 mm / 3.58 in.
Compression Ratio 10.5:1
Max. Variation Between Cylinders 25%
Firing Order 1-8-4-3-6-5-7-2
Lubrication Pressure Feed - Full Flow Filtration
Cooling System Liquid Cooled
Cylinder Block Cast Iron
Cylinder Head Aluminum
Crankshaft Nodular Iron
Camshaft Cast Iron
Pistons Aluminum Alloy
Connecting Rods Powdered Metal

CYLINDER BLOCK
Metric / Standard
Cylinder Bore Diameter 99.50 mm / 3.92 in.
Out of Round (MAX) 0.0076 mm / 0.0003 in.
Taper (MAX) 0.0127 mm / 0.0005 in.
Lifter Bore Diameter 21.45 - 21.425 mm / 0.8444 - 0.8435 in.

PISTONS
Metric / Standard
Clearance
Measured at 38.0 mm / 1.5 in. Below Deck 0.031 - 0.058 mm / 0.012 - 0.023 in.
Ring Groove Diameter
Top Groove 90.4 - 90.6 mm / 3.56 - 3.57 in.
Second Groove 88.4 - 88.7 mm / 3.48 - 3.49 in.
Weight 413 grams 14.56 oz
Piston Length 53.3 mm / 2.10 in.
Ring Groove Width
No. 1 1.23 - 1.26 mm / 0.048 - 0.0496 in
No. 2 1.23 - 1.25 mm / 0.048 - 0.0492 in.
No. 3 2.03 - 2.05 mm / 0.079 - 0.080 in.

PISTON PINS
Metric / Standard
Clearance In Piston 0.005 - 0.014 mm / 0.0001 - 0.0005 in.
Diameter 24.004 - 24.007 mm / 0.945 - 0.9451 in.
Length 62.99 - 63.21 mm / 2.47 - 2.48 in.

PISTON RINGS
Metric / Standard
Ring Gap
Top Compression Ring 0.40 - 0.55 mm / 0.015 - 0.021 in.
Second Compression Ring 0.24 - 0.51 mm / 0.009 - 0.020 in.
Oil Control Rails 0.15 - 0.66 mm / 0.0059 - 0.0259 in.
Side Clearance
Top Compression Ring 0.04 - 0.09 mm / 0.001 - 0.0035 in.
Second Compression Ring 0.04 - .08 mm / 0.001 - 0.0031 in.
Oil Control Rails 0.06 - 0.21 mm / 0.002 - 0.008 in.
Ring Width
Top Compression Ring 1.17 - 1.19 mm / 0.0460 - 0.0468 in.
Second Compression Ring 1.17 - 1.19 mm / 0.0460 - 0.0468 in.
Oil Control Rails 0.387 - 0.413 mm / 0.015 - 0.016 in.

CONNECTING RODS
Metric / Standard
Piston Pin Bore Diameter 24.014 - 24.024 mm / 0.9454 - 0.9458 in.
Side Clearance 0.10 - 0.35 mm / 0.003 - 0.0137 in.

CRANKSHAFT
Metric / Standard
Main Bearing Journal Diameter 64.988 - 65.012 mm / 2.5585 - 2.5595 in.
Bearing Clearance 0.023 - 0.051 mm / 0.0009 - 0.002 in.
Out of Round (MAX) 0.005 mm / 0.0002 in.
Taper (MAX) 0.003 mm / 0.0001 in.
End Play 0.052 - 0.282 mm / 0.002 - 0.011 in.
End Play (MAX) 0.282 mm / 0.011 in.
Connecting Rod Journal Diameter 53.992 - 54.008 mm / 2.126 in.
Bearing Clearance 0.020 - 0.060 mm / 0.0007 - 0.0023 in.
Out of Round (MAX) 0.005 mm / 0.0002 in.
Taper (MAX) 0.003 mm / 0.0001 in.

CAMSHAFT
Metric / Standard
Bearing Journal Diameter
No. 1 58.2 mm / 2.29 in.
No. 2 57.8 mm / 2.28 in.
No. 3 57.4 mm / 2.26 in.
No. 4 57.0 mm / 2.24 in.
No. 5 43.633 mm / 1.72 in.
Bearing To Journal Clearance Standard
No. 1 0.040 - 0.080 mm / .0015 - .003 in.
No. 2 0.050 -0.090 mm / 0.0019 - .0035 in.
No. 3 0.040 - 0.080 mm / .0015 - .003 in.
No. 4 0.050 - 0.090 mm / 0.0019 - .0035 in.
No. 5 0.040 - 0.080 mm / .0015 - .003 in.
Camshaft End Play .080 - 0.290mm / 0.0031 - 0.0114 in.

VALVE TIMING

Intake
Opens (BTDC) 28.2°
Closes (ATDC) 239.8°
Duration 268°
Exhaust
Opens (BTDC) 274.2°
Closes (ATDC) 15.8°
Duration 290°
Valve Overlap 44°

CYLINDER HEAD
Metric / Standard
Valve Seat Angle 44.5° - 45.0°
Valve Seat Runout (MAX) 0.05 mm / 0.0019 in.
Valve Seat Width (finish)
Intake 1.18 - 1.62 mm / .0638 in.
Exhaust 1.48 - 1.92 mm / 0.0583 - 0.0756 in.
Guide Bore Diameter (Std.) 7.975 - 8.00 mm / 0.3134 - 0.315 in.

HYDRAULIC TAPPETS
Metric / Standard
Body Diameter 21.387 - 21.405 mm / 0.8420 - 0.8427 in.
Clearance (to bore) 0.020 - 0.063 mm / 0.0008 - 0.0025 in.
Dry Lash 3.0 mm (at the valve) / 0.1181 in. (at the valve)

VALVES
Metric / Standard
Face Angle 45.0° - 45.5°
Head Diameter
Intake 50.67 - 50.93 mm / 1.99 - 2.01 in.
Exhaust 39.27 - 39.53 mm / 1.55 - 1.56 in.
Length (overall)
Intake 123.38 - 123.76 mm / 4.857 - 4.872 in.
Exhaust 120.475 - 120.855 mm / 4.743 - 4.758 in.
Stem Diameter
Intake 7.935 - 7.953 mm / 0.312 - 0.313 in.
Exhaust 7.932 - 7.950 mm / 0.312 - 0.313 in.
Stem - to - Guide Clearance
Intake 0.022 - 0.065 mm / 0.0008 - 0.0025 in.
Exhaust 0.025 - 0.065 mm / 0.0009 - 0.0025 in.
Valve Lift ( @ zero lash)
Intake 12.0 mm / 0.472 in.
Exhaust 11.70 mm / 0.460 in.

VALVE SPRING
Metric / Standard
Spring Force (valve closed) 435.0 N +/- 22.0 N @ 45 mm / 97.8 lbs +/- 5.0 lbs. @ 1.771 in.
Spring Force (valve open) 1077.0 N +/- 48.0 N @ 32.6 mm./ 242.0 lbs. +/- 11 lbs. @ 1.283 in.
Free Length (approx). 55.6 mm / 2.189 in.
Number of Coils 7.95
Wire Diameter 4.95 × 4.1 mm / 0.194 - 0.161 in.
Installed Height (spring seat to bottom of retainer) 46.0 mm / 1.81 in.

OIL PUMP
Metric / Standard
Clearance Over Rotors (MAX) 0.095 mm / 0.0038 in.
Outer Rotor to Pump Body Clearance (MAX) .235 mm / 0.009 in.
Tip Clearance Between Rotors (MAX) 0.150 mm / 0.006 in.

OIL PRESSURE
Metric / Standard
At Curb Idle Speed (MIN)* 25 kPa / 4 psi
@ 3000 rpm 170 - 758 kPa / 25 - 110 psi
* CAUTION: If pressure is zero at curb idle, DO NOT run engine.

Thank you! I'll try to print this!