Topic: Draw thru Turbo w/ Carb Question, Disappointing Replies
So this morning I posted the following to *another* automotive forum:
"I've been musing about draw-thru turbo carb setups...one of the biggest obstacles seems to be the following issue: Under a full boost/ WOT situation, when the throttle plates (on the carb) are closed, you end up with a vacuum between the carburetor and the turbo. This vacuum can suck the oil out of the turbo, turning your hot turboed creation into a mosquito killing smoke machine. The solution everyone on teh webs seems to agree on is carbon seals in the turbo, to prevent oil sucking into the intake charge stream.
However, carbon seals can fail, and not every turbo has them. So, I had an idea: what if you were to move the throttle plate from the carburetor to between the turbo and the engine? Or, possibly, run two synchronized throttle plates- one at the carb, one between the turbo and the engine? Thoughts on such a setup? "
So far, 3 out of the 4 replies told me I was stupid for wanting to do a draw-through setup. *sigh* This is what I get for turning to the 'net for my answers.
'08 - '10: 1966 Volvo 122, "Charlie"
'10 - '18: 1975 Ford LTD Landau --> 2018 - current: Converted into 1950 "Plymford"
'22 - current: 1967 Volvo 122, "Charlie ]["