924Board.org

augidog · Joined: 03 Mar 2003 Posts: 1360 Location: New Jersey

I'm just wondering if they are the same as the Euro's with just a better quench.I may install some on my daily driver. I'm just putting out some feelers. I'll be going all stock except the new pistons.
Thanks
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1978 924 95 mile daily driver.
Audi TB/POR174M/High Flow Cat/2.25" exhaust
I knew that positive thinking thing wouldn't work.

Min · Posted: Sun Dec 17, 2006 3:17 am Post subject:

all 924na's have pretty bad squish area, becuase the pistons sit so low in the block, and don't have very large dishes in the pistons, Becuase they sit so low (3-5mm) down in the block, technically they don't really have any 'squish'

Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting.

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

I have them in my car.

Vince
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

emoore924 · Joined: 13 Apr 2004 Posts: 2815

I have 9.5:1 cossies in the basement

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

I run 9.5:1 compression with 8.5:1 pistons. Block is decked .050"

Todd
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'79 924NA. Rebuilt 9.5:1, MSDS header, Mega Squirt Injection, MJLJ-EDIS Ignition, 1.6L Whipple Charger and Intercooler, 10lbs Boost, 944 Trans, Custom HD Clutch.
"simsport" said....superchargers are better than turbos its official!....

Joes924Racer · Posted: Wed Dec 20, 2006 6:24 am Post subject:

block deck..there ya go that ll give you a bump
before my pistons went I had 9.0-1 and I felt
the difference on the freeway from 8.5 anyway
suppose you could go with a nos kit with a blow off valve.

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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

augidog · Joined: 03 Mar 2003 Posts: 1360 Location: New Jersey

The set I'm looking at are standard bore FINISHED HONED SIZE, 86.520. for $100 without rings.
What is the likelihood that I won’t need a re-bore? I have two original engines.
_________________
1978 924 95 mile daily driver.
Audi TB/POR174M/High Flow Cat/2.25" exhaust
I knew that positive thinking thing wouldn't work.

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

The 77 block I used for my rebuild was not running when I got it, came out of a car with unknown mileage and unknown maintenance that had clearly been abused based on the condition of the body and running gear. The machine shop I brought the block to said they had never seen a used block with such nice bores, the factory cross hatching was clearly visible. They just did the minimum (hone or re-applied the cross hatching, something like that) and I was good to go. That was the first time I really bought into the theory that the 924 bottom end was "bullet-proof".
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1987 951 - M193 Version for Japan

Min · Posted: Mon Dec 25, 2006 5:19 am Post subject:

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

Mine had 130,000 miles and rust in the cylinders and it cleaned up great. I have NO oil usage.

Todd
_________________
'79 924NA. Rebuilt 9.5:1, MSDS header, Mega Squirt Injection, MJLJ-EDIS Ignition, 1.6L Whipple Charger and Intercooler, 10lbs Boost, 944 Trans, Custom HD Clutch.
"simsport" said....superchargers are better than turbos its official!....