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Old 11-27-2011, 03:37 PM
  #15  
hammertime
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RACING JUNKIE
 
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
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Originally Posted by TRChassis
Originally Posted by hammertime
Originally Posted by TRChassis
Well we have tried just about everything, except transbraking it to 5,000. We usually use about 3-4000 rpm. We have tried changing the low end tune up, different tires and tire pressures. The tracks in this area are not the best, but they do prep them pretty good. I guess what I was getting at is that if there is a possibility the convertor is just locking up from the launch, in other words should I send it back and have it set up for a "softer launch" (if there is such a thing). We used to run lencos and could adjust the clutch a little for the shake but I am lost with this convertor/tire shake.

Rick
Rick, call Greg at FTI and tell him I sent you there for some info. Most think you need a 10" converter with a blower to kill some of the hit, which is just the opposite most 10" stuff is more aggressive then a 9".

2 months ago a customer at the shop I wire for had massive shake issues with his blown dragster. We went to the track with him and a few different converters, tire shake massive with the 10", put the 9" in it and picked up 2 tenths and no tire shake. Went 6.92@191.
Thanks David, I will call Greg when I get a chance and pick his brain. We are going to try our 8" converter that was just re-done even though it is built for an injected SBC in this set up. It may just give us the info we need, then I can get someone like Greg to build us a converter that will help us.

Thanks again,
Rick
You'll find Greg knowns his stuff, do you know if you JW 10" has 8" internals like most other 10" converters do ? The blower car we worked on, was 6600 on the fallback stall, the right guy in a lighter car can get the loose converters to work well, which makes them deadly.
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