Thanks for the input. Bud, your website is a great assistance and I
appreciate it.
No, I don't figure to affect compression changes by increasing valve size,
just mentioning what else is in the stew. I'm ordering pistons. And telling
the machine shop what to do with the head. CC-ing the head and taking some
bore measurements will tell me what I have now. At this point I can have the
pistons made any way I want, but if I shave the head, I can never put that
stuff back. I want to run on pump gas, preferably unleaded regular, and
don't want to have detonation under normal driving circumstances. I REALLY
don't want to discover that I have to pour 104 race fuel in this car while I
run the Rallye to Reno!
John
On Tue, Feb 22, 2011 at 6:26 PM, Bud Krueger <BudKrueger@comcast.net> wrote:
> Hi John,
>
> My late TD engine has TF valves, been bored out .060" and I've had .100"
> taken off of the head. The result is a displacement of about 1308cc and a
> compression ratio of just over 9:1. I also have a 4.3 rear end. I'm also
> using a Pertronix ignition with maximum advance at 30 degrees. My
> distributor is a 40368, see http://www.ttalk.info/Tech/Advance_curves.htmlfor
>the advance curve. Car runs fine on pump 87 octane. Head work was done
> by Lawrie Alexander.
> Hal Kramer did an excellent article in TSO a few years ago showing the
> effects of boring and head shaving on XPAG/XPEG engines. I highly recommend
> reading it.
>
> Bud Krueger
> http://www.ttalk.info/
>
> JohnD wrote:
>
>> Good afternoon.
>> Just got off the phone with the machine shop doing the work on my XPAG to
>> increase the likelihood I make it across the country next June. I need
>> advice on static CR for a street-going TD with Mark 2 valves, some
>> porting, 1 1/2 carbs, and 4.3 rear end. I'd like to run pump gas...regular
>> unleaded would be nice. Probably E+something pretty soonas we are already
>> at
>> E 85 in Michigan.
>>
>> Suggestions? Thanks.
>>
>> John Deikis
>> Rallye for CURE<http://www.tinyurl.com/kidsCURE>
>>
>>
>
>
--
www.johnsfolly.webs.com
*Racing in the Past Lane!*
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