<VV> 63 boost

Smitty vairologist at cox.net
Wed Oct 30 16:48:15 EDT 2013

Message: 8
Date: Wed, 30 Oct 2013 13:42:15 -0400 (EDT)
From: jvhroberts at aol.com
I think Chevy was being overly optimistic. The typical boost I've gotten 
from stock setups is 7-8 PSI, on a good day.
Smitty Says;  John hit the nail on the head with his comment, although there 
have been a couple of unusual turbos I have known that easily made 10 psi. 
My first advice to a turbo owner that asks similar questions is, get a real 
boost gage so you can see what you are really doing.  That little flip flop 
needle in the stock instrument tells you nothing except that the hose is 
hooked up.  I realize this is a side trip from what you asked.  62-63s 
normally go to 7-8 psi.  64s can make 10 but usually more like 8-10.  Most 
65 and 66s will do 10 if they are in any condition at all.  Let me repeat 
again though that turbochargers differ dramatically from one to another.  So 
if your 62 makes 12 psi then joy to the world.  A well setup stock system 
can (but not normally) bring on boost you can feel at the top of 2nd gear. 
Some less well off turbos may not be felt till halfway through 3rd.
Glenn let me move beyond your question and say a Corvair turbo can be so 
absolutely brutal on the engine, if you have a sympathetic bone in your body 
you will take your foot off the gas.  But it takes mods to do it.  That is 
another book.  The title of the book is "How many Pieces Of Your Engine Do 
You Want to Re-Use.

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