……
Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum - presented by CORSA The fastest message board... ever.
Corvair Center 

Current Page: 1 of 16
Results 1 - 30 of 457
3 months ago
Jonathan Knapp
This seems like a reasonable approach to me. Here's how I would state it (if I am understanding correctly): weld up the step in the chamber to the old gasket surface dimension. Then use a 0.032 head gasket to reestablish a good quench area (with pistons at or even slightly above the cylinder tops). The welding would increase the chamber volume over the valves. Then mill the tops of the pi
Forum: Corvair Center Forum
3 months ago
Jonathan Knapp
American Mel is right about a center-mounted 4-bbl. Because the carb manifolds on those set-ups have open plenums (or some of them have semi-open plenums), the four runners do act like balance tubes. Removing the balance tube would make no difference. My question is more about engines that have separate carbs on each head (stock or Webers). It would seem to me that if you refrained from run
Forum: Corvair Center Forum
4 months ago
Jonathan Knapp
I'm interested to know why a Corvair engine needs a balance tube. Without vacuum communication between the two sides of the engine, it would run like two 3-cylinder engines. Low-speed vacuum should be enhanced. 120 degrees into the intake stroke, as the intake valve is near max lift and the piston is still traveling down, the intake valve on the next cylinder in the firing (which is o
Forum: Corvair Center Forum
7 months ago
Jonathan Knapp
I would like one.
Forum: Corvair Center Forum
7 months ago
Jonathan Knapp
When and where is the Ohio Performance Workshop?
Forum: Corvair Center Forum
8 months ago
Jonathan Knapp
Thanks Seth, for letting me know that I was not crazy! When I was buying things for my set-up, I figured the brake bias on maximum braking would be pretty close to 50/50 on a Corvair (depending on the static weight distribution). But in no case could I see a Corvair needing less braking at the rear than the front like a front-engined car.
Forum: Corvair Center Forum
8 months ago
Jonathan Knapp
QuoteKen HandNow what most of the racers also do is increase the size of the front wheel cylinders! I do this routinely on my street cars to 15/16" and on the race car I have 1" front wheel cylinders! Yes I still race with drum brakes so it can be done. With that you want the largest front caliper piston you can get. Even then you really need an adjustable proportioning valve to redu
Forum: Corvair Center Forum
10 months ago
Jonathan Knapp
Frank and Joel are right. My attempt at a verbal simplification was clumsy. The spindle would only stay parallel to the ground if what I call the kingpin angle (or what I think Frank is calling the steering inclination angle) was 0. That is to say that the spindle was exactly perpendicular to the line through the upper and lower ball joints. With a positive kingpin angle (as on a Corvair), th
Forum: Corvair Center Forum
10 months ago
Jonathan Knapp
On a performance set-up, the point of caster is not just returning the steering wheel to center after turning. Caster helps to keep the tire tread in full contact with the road surface in corners. This is particularly important the wider and lower profile you go with your tires. Modern, low-profile tires have little sidewall flex compared to standard or near standard profile tires, so it i
Forum: Corvair Center Forum
11 months ago
Jonathan Knapp
I always thought that Cyclone headers were the only true equal length primary tube headers. Those do not have equal length primary tubes.
Forum: Corvair Center Forum
11 months ago
Jonathan Knapp
Kevin, Is there an optimal fan to top shroud clearance amount? Or is the closer-the-better the right answer?
Forum: Corvair Center Forum
11 months ago
Jonathan Knapp
Hi Kevin, Wouldn't leakage in the top shroud, front and rear cylinder shrouds, and around the oil cooler cause pressure to drop without a decrease in the amount of air flowing into the fan?
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
Don't any of stock Corvair guys need these?
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
1 year ago
Jonathan Knapp
I used 400 degree RTV on the base of my cylinders. Ran it that way for years in my autocross car with no leaks. The compression ratio was 10.1 to 1 with 0.025" clearance, a 95 HP distributor, and a 280 Isky. Ran on 91 octane pump premium gas with very little pinging (only in the hottest weather, heavy loads, low rpms). I did have water injection for insurance against the pinging and keep
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
1 year ago
Jonathan Knapp
1 year ago
Jonathan Knapp
Parts are sold. Thank you for your inquiries.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
Dick Griffin definitely ran water injection with his similar set-up.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
Some of you turbo guys with YHs should try this out. I'm never going to use it as I don't have a turbo car. If you want, I'll loan it to you. If you like it, then you can buy it.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
Someone make me an offer.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
Make me an offer.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
This set-up is more for street/strip driving than for Bonneville. Griffin would drive his Corsa to the strip. Run 13-second ETs and then drive home.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
More pics.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
This is the same as the set-up that Dick Griffin used on his 13 second turbo Corsa in 1966. Custom made manifold for 425 cfm Rochester 2-bbl. off of a big block Oldsmobile. Carb is a factory rebuilt unit from the 1970s. It has never been run. It has sat in a box for 50 years. You will generate way more boost with this than with the YH. Carb and manifold together: $200. You pay the freight.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
New old stock turbo distributor retard unit. Comes in original box. Never used. Hard to find: $100. PM me if you are interested.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
Air cleaner without cross piece. Very good original condition; no dents or scrapes. The decal is in very good shape, as is the internal grommet for the crankcase vent tube. Will clean up well for daily use or can be fully restored for show car. $50 You pay the freight. PM me if you are interested.
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
I have nine of them. All exactly the same. No dents or curb rash. Not show quality, but plenty good for a daily driver. $60 for five; $50 for four. You pay the freight. They will shine up pretty well. I left half of it undone so that you can see the difference. On the polished side you get a good reflection of the camera and my hands. On the unpolished side, not so much. PM me if you
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
An early motor in a '65 car and a '64 van?
Forum: Corvair Center Forum
1 year ago
Jonathan Knapp
How do we know that they run off of the tip of the valve? If they are for a Corvair, it seems like they should have got the pivot to valve tip dimension right. 1.6 to 1 would just be a little shorter on the push rod side.
Forum: Corvair Center Forum
Current Page: 1 of 16

This forum powered by Phorum.