I've found a bunch of surprises while tearing down my engine, but none as big as what I found last night. I'm not even sure what prompted me to measure the cylinder diameter, but when I did I got quite a surprise. 96mm P&C's which means I've had a 2.056 motor all this time and never knew it! I feel bad that I've been running in stock engine classes for autocross for all these years - but then again, most of the people running probably don't know for sure the internals of their motors either. Mine was rebuilt over 20 years ago (that's 5 owners ago!).

So this really screws up my rebuilding plans. I had planned to do a stock rebuild using the higher compression euro pistons. I had thought that this rebuild would give me about 10hp over what I had before (5hp for the euro pistons, and another 5hp due to a fresh engine). But now I'm thinking maybe I should build the engine a little more agressively. Continue with 96mm pistons, but go higher on the compression like somewhere around 8.5:1 (my engine had dished pistons and probably a fairly stock compression ratio since I always ran regular gas with no problems). Maybe a little head work to get the engine to breathe a little better...... Hmmm..... Basically build the engine to the limit of what I can run with the stock d-jet F.I.

Decisions, Decisions. Luckily I haven't bought any hard parts yet.....

Demick

8.5to1 is a good start for the compression ratio. Head work is where the hp is in these motors. I have dyno'd my 2056cc at 95hp which is about 115hp. If you can live with a crummy idle go to a better cam maybe one Jake has.

Geoff

Very nice caliper you have there...

Uh oh, 2056... Britain is going to tackle you for your Autocross trophy now, huh.

Hmmmm...

I did 2056 w/ Djet web cam #73, kerry hunter and a regular valve job got 100hp on the dyno. Attached is the chart

You can have one too - Just three easy payments of $49.99 - Call today - our operators are standing by. If you call now, you will also receive a free.....................,

I have a webcam 73 grind NEW in the classifieds if anyone wants it. If it doesn't sell soon I am sending it back.

Peter

Yeah, and if anyone wants a set of Web-Cam performance lifters to go with it I've got a set for 100bucks, never used. I went Ceramic with my #73
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Demick. OT but did you have a write up on a third brake light under the roll bar? I tried to search for it and couldn't find it. Thanks. Rgds, Michael

Michael

Just click the "Website" link at the bottom of any of my posts. That will take you to my website which has links to all of the different write-ups that I have done.

Demick

Thank you.