[Fot] Urgent tuning help needed

Glenn Franco gaf3 at charter.net
Wed Jun 10 16:41:32 MDT 2009


dos_gusanos at msn.com wrote:
> Hello Gang, Thanks for all the help everyone has given me in getting the TR7
> Dolly Sprint car going.  Tomorrow she leaves on the Glenwood Spring Rally and
> still has a long list of issues.  The most pressing is she will not pass our
> local emissions test.  At high revs, I've leaned it out to where she does
> fine.  At idle the HC goes way up.  The car has SU carbs of a type I'm not
> real familiar with I guess they are HIF? with the float bowls on the bottoms
> where the adjusting nuts would normally be.  The car cruises OK but off the
> line stutters and stumbles.  It has a stock distributor with the Allison
> ignition.  I seem to be albe to set the timing fine at about 12 degrees at
> idle.  At 8 degrees it really stinks.  Any ideas?
>
>
>
> Cheers, Henry Morrison TR6 and 7 to Denver tomorrow...................
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When you lean out the mixture, believe it or not HC goes up. When you 
enrich the mixture your CO will climb.
Maybe you already know this. I'm not sure but doesn't the HIF's have 
mixture screws for idle?

Glenn Franco
72 Spit race car



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