corvair help needed

i know it is just a bit too new but i have a 66 corvair corsa 180 turbo that i can't seem to get to run right . new carb added fuel regulator . still runs to rich and the turbo won't spool up . any ideas appeciated

 

Check the bearings in the turbo and also the oil feed line.
Regardless of how rich he fuel mixrure is , it still should spool up.
You might also check out the metering in the carb for the rich fuel mix
IF

 

PS also check out the spool area in the turbo, it maybe carboned up and restricting
the impeller wheel. Rich fuel mix could cause that.
IF

 

Stock these were pretty dead in the 1st two gears. [almost no boost] Get rid of the 1bl carter sidedraft and get yourself a 2bl holley or a 2bl rochester. [large base] Make yourself an intake for the downdraft carb and wrap the exhaust pipe, to retain the heat, going from the engine to the turbo. You will not believe the difference. The intake does not have to be anything fancy. Be very careful with your timing, too much and it will burn a piston. Run good fuel if you are going to hammer it, these will not tolerate alot of pre ignition or detonation.

 

You might also ask at CorvairCenter.com. Their forum is very active and nothing but Corvairs. A lot of the guys there are cranky, but you'll get good answers. Corvairs are quirky beasts.

 

The original fuel valve in the Carter YH carburetor was spring-loaded. MOST (not all) of the aftermarket kits have the solid fuel valve. The solid valve in the YH can cause a rich condition.

Jon.

 

Double on the Corvair Center Forum...I own a 63 and visit there as well.

 

the carb came from clarks corvair so i hope they built it right . they said after i had the problem that they actually tune th carbs on a car that they also road test . if they were truthful that means there is something wrong with my car . i have been thinking that i need to do a compression test . the turbo will boost now to 3 psi which is way low . so i may also have to look at the turbo itself . the idle has also become a proble as it changes at will . i have set it to spec only to have it days later start idling at 2k then go back to normal the next time i start it .

 

Compression check is a good idea. My 65 Corsa Turbo Convertible did the same thing and surprise, surprise, #1 had 30 lbs, and #5 had 70, with the rest at 130.

 

If the center bearing is good (turbine spins with light finger pressure) no boost is an exhaust leak.

 

the turbo spins freely and i have replaced both exhaust manifolds along with all 8 gaskets . i cant see any leaks in the pipes but i guess i'll replace those next.

 

I think that's all they're good for, 3-5 psi. If you don't have a service manual, GET ONE. There are a lot of quirky stuff with Corvairs that runs contrary to what you'd think. You should also get a book called "How to Keep Your Corvair Alive". Great book and VERY useful with a lot of info not covered in the service manual.

 

none of my shop manuels say what the psi is supposed to be however everyone i have talked to says that it should have 8 to 10 psi . plus all of the factory literature say that it is spirited . after putting the screws to mine i can sat that it is doggish with potential.

 

I did a quick search and you may be right, but maybe lower psi in lower gears. You will probably get an immediate answer and solution on CorvairCenter where they're much more familiar with the quirky Corvair than the HAMB.

 

If the idle speed varies, my first guess would be a vaccuum leak. Could be wrong, but wouldn't hurt to check. My second car was a '63 Vair Monza, (first car was a '65 Malibu) but that was a LONG time ago when I was 14!

Brian