Head compression help

924 Views 11 Replies 7 Participants Last post by GTI2lo, Feb 12, 2002

8v-inside

Discussion Starter · Feb 8, 2002

Ok i was talking to the guy who is going to port and polish my head. He said he could shave it 0.060" to bring the compression up 1 point. And there would be no valve smacking with my 270 cam. Anyway i want to know what the stock compression is on a 2.0. Also what do you guys think about this? http://****************.com/smile/emthup.gif

See less See more

Save

1 - 12 of 12 Posts

Wild Monkey

· #2 · Feb 9, 2002

Re: Head compression help (8v-inside)

For the MkIV it's 10.1:1. Should be about the same for your MkIII.

Save

8v-inside

Discussion Starter · #3 · Feb 9, 2002

Re: Head compression help (Wild Monkey)

quote:[HR][/HR]For the MkIV it's 10.1:1. Should be about the same for your MkIII.[HR][/HR]

Ok so if stock is 10 then after the shave it would be up to 11? Hows that with pump gas?

See less See more

Save

JettaRed

· #4 · Feb 9, 2002

Re: Head compression help (8v-inside)

Stock compression for a new engine is 145psi to 189psi--big difference, but that's what the Bentley says. I just did a compression test on my engine with 62,000 miles on it and got 195psi on all cylinders. I'll allow that the compression gauge was a little off. The important thing is that all cylinders are close to each other.

Save

Fast2.0L

· #5 · Feb 10, 2002

Re: Head compression help (JettaRed)

I had 11.3:1 or so on my 94 golf and I had to run 94 or higher octane... I suppose it depends on the chip you're running too. The other thing to watch is that your ignition and cam timing will be off and you will have to get an adjustable Cam gear. I did my compression with a set of TT pistons.

Save

8v-inside

Discussion Starter · #6 · Feb 10, 2002

Re: Head compression help (Fast2.0L)

quote:[HR][/HR]I had 11.3:1 or so on my 94 golf and I had to run 94 or higher octane... I suppose it depends on the chip you're running too. The other thing to watch is that your ignition and cam timing will be off and you will have to get an adjustable Cam gear. I did my compression with a set of TT pistons.[HR][/HR]

WOW... i'm guessing your car was pretty fast

Save

Fast2.0L

· #7 · Feb 10, 2002

Re: Head compression help (8v-inside)

Nah it wasn't fast very fast. Now that I have seen the darkside the only way to get real power is to go forced induction. The A3 is just so heavy. Even with all my mods my 94 only ran mid 15 sec. 1/4 mi.

Save

8v-inside

Discussion Starter · #8 · Feb 10, 2002

Re: Head compression help (Fast2.0L)

Damn are you for real!?!? I'm trying to go all motor with a 2.1L stroker kit

See less See more

Save

vwpat

· #9 · Feb 11, 2002

Re: Head compression help (8v-inside)

quote:[HR][/HR]Damn are you for real!?!? I'm trying to go all motor with a 2.1L stroker kit

[HR][/HR]

Do not shave the head then, raise comp the proper way with the new pistons.

See less See more

Save

8v-inside

Discussion Starter · #10 · Feb 11, 2002

Re: Head compression help (vwpat)

yea?

Save

fundub

· #11 · Feb 12, 2002

Re: Head compression help (JettaRed)

jettared,
since you've had a compression test done could you tell me where the fuel pump fuse is located ? thanks.
-new member
95 jetta 2.0, hi miles, euro cat back, tt chip, kn panel

See less See more

Save

GTI2lo

· #12 · Feb 12, 2002

Re: Head compression help (fundub)

It is fuse number 17 The acceptable limit is 145 but again you really don't want to see much difference between all the cylinders then you will have rich conditions in some areas.

Save

1 - 12 of 12 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month