robertbartsch

Some here have suggested that engine assembly requires basic tools such as a bore gauge. The one taged below is accurate to .0005 and the narrative describing the unit says it is only accruate enough to check your machinist's work.

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http://www.powerhouseproducts.com/st...Code=POW205025

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Any thoughts here? Thanks...

Other tools I assume will be needed include:

Micromiter
ring filing tool
dial gauges
piston stop
degree wheel
ring/piston compressor
torque wrenches

LOnSLO

iTrader: (15)

Robert, I have 2 brand new Starrett outside micrometers for sale. One is 2 o 3 inch range, the other is 4 to 5 inch range. These have a Vernier scale also. Let me know if you're interested. Also, you will need a bore gauge acuurate to +-.0001" for assembly. Mitutoyo makes one that is around $260 or so.

PacerX

iTrader: (4)

I'm interested in the Starrets. Fire me a PM please.

Jason99T/A

iTrader: (21)

I agree with LOnSLO. .0001" accuracy on both the dial bore gauge and the outside micrometers.

LOnSLO

iTrader: (15)

You have a PM.

robertbartsch

Below are the offical factory specs for the ls1 motor....most of critial measurements seem to be within the accruacy range of the .0005 bore gauge advertised in the post above....

I would be using the tools to spot check measurements and not for machining purposes...I'm planning to build a stroker from a NEW factory block...



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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 (Production)
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 Clearance (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 Run-out 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 Valve Spring Shim to Top Edge of Seal Body) 18.1-19.1 mm 0.712-0.752 in
Approximate Fluid Capacities
Cooling System
Automatic Transmission 11.6 Liters 12.3 quarts
Manual Transmission 11.9 Liters 12.6 quarts
Engine Crankcase
With Filter 6.1 Liters 6.5 quarts
Without Filter 5.7 Liters 6.0 quarts
Fuel Tanks (Total) 72.3 Liters 19.1 gallons
Rear Axle Differential
Lubricant 1.6 Liters 1.69 quarts
Limited-Slip Additive 118 Milliliters 4.0 ounces
Transmission Fluid
Drain & Fill (Automatic Transmission) 4.7 Liters 5.0 quarts
Overhaul (Automatic Transmission) 10.2 Liters 10.8 quarts
Overhaul (Manual Transmission) 3.9 Liters 4.1 quarts

LOnSLO

iTrader: (15)

Look at your bearing clearance specs. Even though those are factory clearances, which should not be used with a stroker motor, you will need to measure to .00001".

robertbartsch

Ok - thanks...
I had a motor built by another so-called machanic a few years back...it spun a bearing almost immediatly so I assume this measurement is critical...

I wonder how so many get away with plasticgauge?

Are my chances of getting a bad part reduced if all the stuff (engine block, crank, rods, pistons, ect. are new not used)?

robertbartsch

Anyone?

Old SStroker

"Accurate to .0005" generally means + or - .0005 or a total of .001. It may also mean the the smallest division on the dial is .0005. The .0001 dial has 5 times as many divisions so getting an accurate reading is much more likely. Also, the mechanism for the .0005 gage doesn't have to be as precise as that for the .0001 gage.

IMO, only buy .0001 reading measuring instruments like micrometers, and bore gages. For stuff like spring heights, and other general measuring on an engine, digital or dial calipers are adequate.

Another point: measuring to +/- .0001 is far from an easy thing to do with hand held gages. If you give a piston pin, which is probably the most closely held diameter in an engine part, to 5 people, and give them all the same micrometer to measure it, you may get answers that vary by .0002 to .0003. BTDT. Even harder is measuring the pin bore accurately. You need to practice a lot if you plan to accurately measure stuff in the .0001 accuracy range. Even temperature is your enemy. A .927 dia. piston pin grows about .000015 (15 millionths) just heating up from 70 degree room temp to body temp as you hold it. If you are looking for .0001 accuarcy, that's 15% of it.

As far as plastigage goes, in many cases this is about as accurate as normal hard measuring, and if the gages or operator are less than perfect, it might be better. Just my opinion.