Compression numbers stroker vs stock

[gabe600r]

Would a stroker motor compression be the same as stock

 

[viperlp01]

You pick the compression.

 

[gabe600r]

no im not talking about compression ratio talking about psi when doing compression check

 

[Joethefallen23]

no im not talking about compression ratio talking about psi when doing compression check

Well that's the point. The compression ratio pretty much dictates how high your compression numbers will be. In other words, your choice of CR pretty much determines what numbers you'll see on a compression test.

 

[gabe600r]

Well didn't get to pick compression ratio. Was a 2.3 stroker kit from slowboy. 600 horse kit with manley pistons anybody know what that would be

 

[schalk35]

Well didn't get to pick compression ratio. Was a 2.3 stroker kit from slowboy. 600 horse kit with manley pistons anybody know what that would be

That's a very vague, question. Every engine is different first off. Also number will depend on more than just what pistons you run. It will also be determined by what your deck height is on your block, head, and finally how thick of a head gasket you will run. Since its a vague questions I'm going to guess its going to be around 150 psi.

 

[gabe600r]

The head was decked not sure how much was taken off its a.0.50 mm gasket tho I know that

 

[Bo0sTdTsI]

Well I don't know but I have 10:1 wisecos and mine checked out at 180-185 across all 4 don't remember exact numbers but they were all within 0-5 difference. Haven't had to check it lately though.

 

[LandSpeed-DSM]

Your cam and cam timing will also play a big role in your compression numbers.

Why don't you post your results and the mods on the car?

 

[DSM1G90]

Easiest answer to a question - build it and give us the results since their is no direct answer to give.

Have to be careful here or this could turn into a benchracing topic.

 

[mastermatt87]

12 years later but I'll tell you, I have a 2.3 with stock bore 85mm 100mm Eagle crank Wisco pistons, Eagle H beam rods, stock bore, stainless valves, and GSC S2 cams.

I'm 135psi across all 4 pistons.

Running FP black at 40psi.
I have roughly 30 miles on the build.

 

[jed344]

12 years later but I'll tell you, I have a 2.3 with stock bore 85mm 100mm Eagle crank Wisco pistons, Eagle H beam rods, stock bore, stainless valves, and GSC S2 cams.

I'm 135psi across all 4 pistons.

Running FP black at 40psi.
I have roughly 30 miles on the build.

What cams and how much overlap. This can greatly effect the cranking compression when there is a lot of overlap. I can swing my results over 40 psi depending on how i have my cam gears adjusted with GSC S2 cams. I check leak down when breaking in my motors to tell when rings are seated and not the compression test. I have multiple 10:1 motors that depending on cams and overlap test anywhere cold from 150-225.

 

[DSMPT]

My 2.3 2g has somewhere around 225 psi with the stock cams and 10.5:1 pistons.
The compression test number would depend on many factors, such as static compression, cylinder and combustion chamber sealing condition, cam profile, valve/cam timing you set, battery health etc. So it doesn't matter if it's stroker or stock stroke since it's already calculated in the static compression.

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