 More surprises found in my engine!, Someone put an extra 2mm in there |
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| Demick |
 Jul 16 2004, 08:48 AM
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#1
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Ernie made me do it!  Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257   |
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 Attached image(s) 
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| Bleyseng |
Jul 16 2004, 08:58 AM
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#2
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
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 |
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| scotty |
Jul 16 2004, 09:40 AM
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#3
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The Fun Never Stops Group: Members Posts: 773 Joined: 20-May 03 From: Portland. Oregon (SW) Member No.: 718 Region Association: None |
Very nice caliper you have there... (IMG:style_emoticons/default/cool.gif)
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| mightyohm |
Jul 16 2004, 09:45 AM
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#4
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Advanced Member Group: Benefactors Posts: 2,277 Joined: 16-January 03 From: Seattle, WA Member No.: 162 Region Association: Pacific Northwest |
Uh oh, 2056... Britain is going to tackle you for your Autocross trophy now, huh. (IMG:style_emoticons/default/happy11.gif)
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| Britain Smith |
Jul 16 2004, 10:05 AM
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#5
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Nano Member Group: Members Posts: 2,354 Joined: 27-February 03 From: Hillsboro, OR Member No.: 364 |
QUOTE(jkeyzer @ Jul 16 2004, 07:45 AM) Uh oh, 2056... Britain is going to tackle you for your Autocross trophy now, huh. (IMG:style_emoticons/default/happy11.gif) Hmmmm... |
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| joes |
Jul 16 2004, 10:19 AM
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#6
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Newbie Group: Members Posts: 14 Joined: 16-June 04 From: Birmingham, Al Member No.: 2,214 |
I did 2056 w/ Djet web cam #73, kerry hunter and a regular valve job got 100hp on the dyno. Attached is the chart
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| SLITS |
Jul 16 2004, 10:29 AM
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#7
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
QUOTE(scotty @ Jul 16 2004, 07:40 AM) Very nice caliper you have there... (IMG:style_emoticons/default/cool.gif) 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....................., (IMG:style_emoticons/default/chairfall.gif) |
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| newdeal2 |
Jul 16 2004, 02:38 PM
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#8
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Unregistered |
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 |
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| swood |
Jul 16 2004, 03:55 PM
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#9
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Senior Member Group: Members Posts: 1,839 Joined: 6-February 03 From: Strong Beach Member No.: 251 Region Association: None |
QUOTE(newdeal2 @ Jul 16 2004, 12:38 PM) 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 . (IMG:style_emoticons/default/biggrin.gif) |
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| mistro |
Jul 16 2004, 10:55 PM
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#10
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Member Group: Members Posts: 148 Joined: 12-March 04 From: Highland Park, IL Member No.: 1,786 Region Association: None |
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
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| Demick |
Jul 16 2004, 11:01 PM
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#11
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Ernie made me do it! Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257 |
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 |
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| mistro |
Jul 16 2004, 11:03 PM
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#12
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Member Group: Members Posts: 148 Joined: 12-March 04 From: Highland Park, IL Member No.: 1,786 Region Association: None |
Thank you.
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