M62 compression numbers for boost

[zak78]

Hey All, I'm considering the VF kit for my '98 540i at 130k miles. Compression numbers are all 184-195, so a max of ~5% difference between cylinders. Is that within what you'd consider "within normal limits for FI?"

Full reseal was finished about two months / 1000 miles ago. Also, new timing chains, noisy Zionsville full cooling kit, UUC clutch and flywheel/ M5 diff / prop-shaft / 540 axles combo.

[vollosso]

Yeah that’s fine. Could be better really but most oem motors are about there.




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[jimmyz66]

Zack, change your location in your location. LOL, you moved from redneck county to greenneck county. I lived 2 years in Dothan/Enterprise. My neighbor was a moonshiner and made $4k a week and that was many, many years ago.

[zak78]

Thanks for your replies and feedback.

Jimmy, I've always been in a redneck county of Pennsyltuckey; I think you may have me confused with someone else. Your engine setup sounds...bananas, in the best way
:

[jimmyz66]

Thanks for your replies and feedback.

Jimmy, I've always been in a redneck county of Pennsyltuckey; I think you may have me confused with someone else. Your engine setup sounds...bananas, in the best way
:

LOL, Vollosso is also Zack. He is installing a custom turbo kit for my M62. Your compression was similar to mine. VF kits are somewhat low boost levels, 6-9 psi I think. My psi was around 8 and I had 550 rwhp on a Mustang dyno and 614 rewhip on a "make your own numbers" RMS dyno.