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Need 4G63 engine specs (Ive looked)

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AWDkitkat

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Discussion starter · #1 ·
Ive looked

......and complete 6bolt engine specs must be the best kept secret ever. Im looking for complete specs from bore/ stroke to deck height and valve size. can anyone point me in the right direction?
 
#4 ·
Bore - 85mm ( 3.35 in )
Stroke - 88mm ( 3.46 in)

What information do you need? There is a lot. Tell me exactly what you need and its yours...
 
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Discussion starter · #6 ·
deck height
bore
stroke
rod length
rod/stroke ratio
compression
wrist pin diameter
valve sizes
valve angles
and any other useful info for someone building motors.

thanks.. and no CD, i keep putting it off cause im a dumb ass.
 
#8 ·
bore - 85mm
stroke - 88mm
compression - 7.8:1
valve length :
intake - 109.5mm
exhaust - 109.7mm
valve face angle - 45-45.5 degrees
thickness of valve head
intake - 1.0mm
exhaust - 1.5mm
valve seat angle - 44 - 44.5"


thats what i came up with really quick looking through the dsm manual. i don't have much time. i will see what else i can come up with later.
 
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#16 ·
i have my head on my bed room floor so let me know if you need anything else...
Click to expand...
Now that is a man with priorities! :D

The rod length is 150mm, and given that the stroke is 88mm, that yields an l/d of 1.70

Standard block and head deck trueness is +/- 0.002". The manual lists service and decking limits.

I would also check main and thrust bearing tolerances multiple times unless you want problems.

Ken Young
 
#17 ·
eyebrowski said:
oops, thank you for that correction.

i have my head on my bed room floor so let me know if you need anything else...
Click to expand...

Haha, I know how you feel. Except I have my block sitting on the floor of my room. My friends walk in and look at it :confused:


Rogue_Ant - Thanks for the measurements.
 
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#18 ·
What is the stock head combustion chamber volume (just the head, not counting the piston).

Using info from summit racing catalog for JE pistons

Bore = 3.386 in = 86 mm
CR = 9:1
Vdish = 11.7 cc

I calculated that the head combustion chamber volume is 52.2 cc

Please correct me if I'm wrong.

Thanks,

Stevan
 
#19 ·
I think the previous poster is forgetting the HG and deck height volumes. I cc'd my 1G head to be 44.8 cc's after being decked just enough to make it flat. I believe the stock pistons are supposed to fit .015" in the bore.

Going from a stock HG at ~1mm compressed to a 1.2mm metal HG will lower compression by roughly .3:1

Just something to consider when swapping headgaskets or machining a block and cylinder head.
 
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