Msg too long. Snipped and resent.
TD
>Date: Tue, 07 Apr 2009 22:21:49 -0500
>To: "Gary Horstkorta" <vintage.racer@comcast.net>, <Fot@autox.team.net>
>From: Tony Drews <tony@tonydrews.com>
>Subject: Re: [Fot] Engine Problem
>
>When doing a compression check, make sure you have the carbs opened
>up. I had weird compression values, and after remembering to open
>the butterflies got over 200 psi in each cylinder.
>
>If you ran it hot, you can easily stick a valve. In my case, that
>happened between 200 and 220 degrees F.
>
>Mallories have weird condensers, Jack used to scrape off the outer
>coating where it hit the bracket. The bracket that holds the
>condenser has a couple of spikes that are supposed to pierce the
>outer coating - not very reliable. Not sure why this would be
>corner dependent, but could explain why changing out the dizzy would
>fix the problem kinda. Rotors have been a problem too, another
>thing that would have changed with the new dizzy.
>
>SU's (at least the HS-6) can take a surprisingly high fuel
>pressure. Also, the brass floats don't seem to like racing gas and
>can sink sometimes. With the HS-6's we needed to have the lids on
>in a certain position or you get starvation in cornering. Left
>handers were our biggest problem. We found that having the fuel
>inlet at the front of the front carb and the back of the rear carb
>(may have that backwards but I don't think so) was the optimal
>setup. You don't have enough acceleration to screw up the rear
>carb, and the problem caused by braking fixes itself by the time you
>get on the gas hard.
>
>I wonder if the new dizzy install got the timing off causing the
>higher water temp. Then you stuck a valve.
>
>No fixes, but food for thought.
>
>- Tony Drews
>
>At 07:45 PM 4/7/2009, Gary Horstkorta wrote:
>>Hello:
>>
>>
>>
>>OK, here's a TR4 engine situation I'd like to receive some feedback on.
>>During the winter layoff, no major engine changes just routine maintenance.
>>Engine always started quickly and ran smoothly up and down rpm range while
>>in the garage. However, at this past weekend's vintage race at Infineon
>>Raceway, I encountered the following:
>>
>> <snip>
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