Posted by mEl on April 08, 2013 at 04:41:53 from (71.245.6.71):
In Reply to: Turbos10 and Mperfection posted by Maple Ridge Puller on April 06, 2013 at 08:29:53:
The carb can be put under pressure but that puts it in an unnatural envirornment and requires a system to increase fuel pressure as boost increases due to the pressure backing into the float bowl and when the boost gets higher than tank pressure fuel will cease to flow, tried it years ago and quickly changed to suck thru. You would need a fuel pump that would increase the pressure to higher than your boost would ever get then a pressure regulator that was tied to the intake to increase the pressure in proportion to your boost. I believe "in the day" there were special fuel pumps to acomplish this.
In addition, turbo inlet housings and wheels on the compressor side are mathematically calculated with formulas about 3 pages long as well as the exhaust wheels and shafts and exhaust housings in variing A/R ratios to tailor the boost to the desired engine speed. Not sayng you can't get something to work but improper sizing will not get the maximim result you need and a compressor failure puts turbo shrapnel into your engine.
Early on we used up every Corvair turbo we could find and even carried a spare to the pulls. Finally I consulted with a turbo distributor and we worked up a custom unit with great results.
If you choose to go your route you will have a lot of fun learning and I encourage you to do so, not trying to knock your idea, it's fun to put hands on and learn.
Keystone has the advantage of going all through this and you pay for that knowledge as much as hardware. If you buy a new turbo you will be spending a hefty part of the kit price.
I would be more than happy to chat with you about this as I did this very thing in the mid to late 60's. We'll get together vis phone if you like.
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