Compression on Jspec GVR4 RS model?

[PRESSURIZED]

Whats up guys, I just got a hold of a Jspec GVR4 RS motor. It came with the yellow top injectors and a B16G turbo.

I did a compression test on it and it came up with 180psi across the board!

The motor is clean as hell on the inside and I was under the assumption that these have the 7:8:1 compression but according to these number it must have closer to the compression ratio of a 2G. 8:5:1 ?

ANy input?

 

[TSIfreek]

May have some carbon build up around the pistons. But if so it wont fall to much. Thats great consisancy should be a healthy motor.

 

[GVR4592]

It's 7.8:1, there are no difference with the internals of the RS engine and a 6 bolt turbo engine.

 

[PRESSURIZED]

Well then my 2g motor must be getting old cause it barely puts out 160 across the board.

 

[BOBS90TURBO]

Hey, if you dont mind me asking, where did you get the engine?? I am thinking about buying a JDM engine, but was hoping to get one with a 16g and big injectors, I know some import shops get the good ones like yours. Thanks

 

[miragetbo1997cc]

Umm.The pistons are NOT the same.They are stamped "63DTR".Other JDM 6bolt motors have "63DT".This is from personal experience ,not hearsay.But I don't know the C.R.

 

[GVR4592]

I have more JDM engines than I do U.S. engines, I have two Galant VR RS Evolution engines, one is in my car. They say 63DT on the pistons and compression is 7.8:1.