Quote:
Originally Posted by longbed67
x2 compressor surge is a good way to damage equipment (bad idea)....
you can get 250-300hp out of a 250 naturally aspirated 350-400+ range would be a better low boost goal.
Stock heads on the 250 leave a lot to be desired... a few small changes that anyone can do in a home garage can really add some power. After my dealings with SPA and their manifold, I would never use one again!
Not trying to counter-dict or offend Boucher here but you may want to contact C & S carbs about the sizing.... n/a sized carbs DO NOT correlate to Blow through setups! Blow through is a whole different beast.... Also if this is going to be your first serious turbo build you may want to do some research over at theturboforums.com
Good luck with your build!  |
LongBed, good info on the SPA, I guess there is only one way to find out!
As far as my carb, from a calculation standpoint. You can size your carb for your engine and then multiply it by 1.5. I should have probably used the same carb, just in the 500 cfm model. I found this one for $50 & couldn't pass it up. It does really good at idle and WOT. The only area of struggle is cruise /transitions. I made the mistake of drilling my PVCR's too big from the start. (.078"). My jets in there now are size 57's!
The turbo is a factory takeoff, from a 1987 Grand National, including the wastegate elbow.
Boucher'
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