Compression question

[worldcyclist@earthlink.net (worldcyclist)]

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I worked at a shop and we'd often get Jetta's (the most commonly abused car
for that particular area- Berkely CA) with compression up to 230psi that
would nock and ping like crazy.  We used a roll around machine that would
plug into the fuel system to clean out the carbon buildup, and reduce the
PSI back to normal level.

At 190-215 either the engine is not stock or it's well carbonized. However I
don't have my Bently manual in front of me......

Gary

Jason wrote:

> Both my 1.8 and 2.0 16V give between 190 and 215psi cold.
> Jason
>
> At 02:46 PM 5/7/2003, worldcyclist wrote:
> >I've got some firsthand experience that might be helpful.
> >My 1.8 16V with stock cam timing gave 150psi doing a compression test.
> >With the cam advanced 8* it was 175psi. Otherwise it's 10-1 in terms of
> >ratios.
> >The JH engine I had was 135psi or 8.5-1.
> >The Alfa with 9.5-1 gives me 173 psi with stock cams and timing.
> >
> >An interesting site is www.smokemup.com
> >they have GUI programs to play with stuff like this, plus more.
> >
> >Gary
> >87 16V Scirocco (FS $975)
> >80 Callaway Stage 3 Rocco
> >91 Alfa Romeo 3.0 V6 5spd, lowered
> >
> >Message: 57
> >From: "Scourge" <scourge@cogeco.ca>
> >To: "Rocco list" <scirocco-l@scirocco.org>
> >Subject:
> >Date: Mon, 5 May 2003 18:33:42 -0400
> >
> >This is a multi-part message in MIME format.
> >
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> >Hey
> >
> >Just curious, what the stock compression on 16v's?  2.0 and 18
> >And what about a stock jh?
> >
> >I think it's in the high 8's or low 9's for the jh. Does a 1.8 16v head
> >=
> >on a 2.0 16v actually increase compression?
> >
> >
> >thanx
> >
> >  -The George
> >
> >

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