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Old 06-13-2020, 12:41 AM   #58
will740turbo
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Join Date: Jun 2006
Location: Portland, OR
Default Daaaaaaang

Quote:
Originally Posted by HansW View Post
Hi
Just typed it out -- makes for better readability:

Engine Specifications B 230 Ft

Cylinder head
Warp-limit acceptable for use:
Lengthwise: 0.50 mm
Across: 0.25 mm
Warp limit acceptable for refinishing;
Lengthwise: 1,00 mm
Across ; 0.50 mm
Height:
New: 146,1 mm
Minimum after refinishing: 145.6 mm

Inlet Valves
Head diameter: 44mm
Stem diameter:
New: 7,955 to 7,970 mm
Wear limit: 7,935 mm
Valve head angle: 44deg 30

Exhaust valves
Head diameter: 35 mm
Stem diameter
New: 7,945 7,965 mm
Wear limit: 7,925 mm

Valve seats inserts:
Diameter (standard)
Inlet: 46 mm
Exhaust: 38 mm
Oversizes available: +0,25 and +0,50 mm
Valve seat angle: 45 deg

Valve guides
Length: 52 mm
Internal diameter: 8,000 8, 022 mm
Height above cylinder head:
Inlet: 15,4 to 15,6 mm
Exhaust: 17,9 - 18,1 mm
Stem to guide clearance
New: ( inlet) 0,030 0,060 mm
New ( exhaust ): 0,060 0,090 mm
Wear limit (inlet and exhaust) 0,15 mm
Fit in head: interference
External oversizes available 3

Valve springs
Diameter: 25.9 mm
Free length: 45,5 mm
Length under load:
280 to 320 N 38,00mm
702 782 N 27,5 mm

Cylinder bores
Standard size:
C: 96,00 96,01 mm
D: 96,01 96,02 mm
E: 96,02 96,03 mm
G: 96,04 96,05 mm
First oversize: 96,30 mm
Second oversize: 96,60 mm
Wear limit: 0,1 mm

Pistons
Height: 64,7 mm
Weight variation in same engine: 16 gram max.
Running clearance in bore 0,01 0,03 mm

Piston rings
Clearance in groove
Top compression: 0,060 0,092 mm
Second compression: 0,040 0,072 mm
Oil control: 0,030 0,065 mm
End gap:
Compression rings: 0,30 0,55 mm
Oil ring: 0,30 0,60 mm

Gudgeons pins
Diameter standard: 23,00 mm
Oversize available: + 0,05 mm
Fit in rod: light thumb pressure
Fit in piston: firm thumb pressure

Auxiliary shaft
Bearing journal diameter
Front: 46,975 47,000 mm
Centre: 43,025 43,050 mm
Rear: 42,925 42,950 mm
Bearing running clearance: 0,020 0,075 mm
End float: 0,20 mm 0,46 mm

Crankshaft
Run out: max. 0,04 mm
End float: 0,080 0,270 mm
Main bearing journal diameter:
Standard: 63,00 mm
First undersize: 62,75 mm
Second undersize: 62,50 mm
Main bearing running clearance: 0,024 0,072 mm
Main bearing out of round: 0,006 mm max.
Main bearing taper: 0,006 mm max.
Connecting rod bearing journal diameter:
Standard: 49,00 mm
First undersize: 48,75 mm
Second undersize: 48,50 mm
Connecting rod bearing running clearance: 0,023 0,067 mm
Connecting rod bearing out of round: 0,1mm max.
Connecting rod taper: 0,01 mm max.

Connecting rods
Length between centres: 152 mm
Endfloat in crankshaft: 0,25 0,45 mm
Weight variation in same engine: 20 gram max.
I don't even know if you're still on the forum at all, but this is FANTASTIC info. All the links are broken, all the photos are gone, and K-jet.org is no more. In fact, I think the site owner may have died based on his last few posts :( Hopefully he isn't.

I just ordered a paper copy of the engine refurb manual off ebay for $13.

I'm trying to find limits for the cam journals.
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