Ive read that you use the Torker (II?) manifold underneath your tbi setup..

I was wondering if you use any spacers or is the TBI just mounted direct on the plenum?

 

From bottom up: Original Torker, 1/2" phenolic spacer, 5/8" aluminum spacer/adaptor, TBI unit.

The phenolic spacer is internally tapered to fit the wide TBI/adaptor bores to the manifold plenum opening.

The aluminum adaptor has 2-1/8" bores.

RBob.

 

thanks Rbob, did you ever experience any strange mixture distribution problems at high rpm at any stage of the development of your setup?


Im fighting a losing battle against some kind of miss/sputtering/gurgle whatever you want to call it in the 5000 rpm range, seems to come on at 5200, go away briefly (engine comes back on like a light) and then comes back on around 5600 only to last just a few hundred rpm and then the engine comes back on again and runs hard to 6. In third gear it feels like Im tapping hit the brakes the power comes off so hard.

Im running the same timing table as the carb setup that ran very well, I tried backing off the timing 4 degrees, no improvement, I added a 3/8" spacer, didnt change anything.

The weird part is that my afr looks pretty good except that reviewing my logs I see that it starts to bounce around by half a point or so when the gurgling is occuring, like it starts moving between 12.3 and 13.1 whereas everywhere else it stays pretty rock solid. Doesnt seem to do this consistently either, ive gotten clean runs out of it, can't figure out what is different between them other than I think it doesnt do it as much when the engine is cold or during my first WOT runs.

Its basically driving me nuts.

 

are your injectors static ? might be.could be a fuel surge issue as well pump might not be able to keep up with the fuel demands.

 

i may have figured something out.. no they arent static..

Ill let you know if this pans out