Looking for some guidance. Was thrown into having to replace the entire fuel system on the 64 Spyder Vert. Looking to use AN hose and fittings from Summit Racing.

Going out of the new Clarks tank, I will be going into Clark's e-fuel pump and filter combo. Then from there down the length of the car and hope to use a firewall fitting on the front shroud. Then up to a Holley fuel pressure regulator, then the 90 degree into the stock turbo carb.

Not knowing anything about AN, can someone tell me which size (-4,-8, etc) and which correct 90 degree fitting into the carb?


Appreciate your help.

Curtis

64 Spyder Convertible
Milwaukee, Wi

Former Corvairs
62 Monza 900 Coupe (102/4)
64 Monza 900 Convertible (110/PG)
65 Monza Coupe (110/PG)
66 Monza Coupe (110/PG)
66 Monza Sedan (110/PG)

I believe the GF-99 fuel filter is AN-6. Is the carb the same?

-6 hose is fine for any Corvair fuel system. Do you know the threads into the body of the Carter YH? Is it originally a pipe-thread adapter to an SAE inverted flare? The Holley regulator is a larger NPT, 3/8" NPT, as I remember. If you don't care much about stock, you can mount the Holley regulator on the bulkhead, with a 90 degree fitting on the bottom, aimed through the bulkhead. Run the hose from the existing fuel tube (outside of the engine compartment) Then you only need a short run over to the carb.

Seth Emerson

Check my new Performance Corvair Web site [www.perfvair.com]

I have and still use AN hose but I use it sparingly as it has life span similar to rubber hose. If you have to, I would use the PTFE stuff with the teflon liner as modern gasoline is brutal on the inside of the hose. Just my $.02
I try to use as much hardline as possible and on my collector cars I use stainless hardline.

Lee J

I agree, Lee. The Teflon stuff is good, but hard to form (stiff) and really tricky to do terminations. (blood) There are several new hose types that are "said" to be ethanol proof, and can be used with the good fittings (37 degree AN). Look around, Curtis. I'm pretty sure you can find the better hose.

Seth Emerson

Check my new Performance Corvair Web site [www.perfvair.com]

Spend the money and use nothing but Real Aeroquip , the hose and fittings are superior to the others.

1965 Crown V8 Racer
1964 Bill Thomas Monza Replica Racer
1964 Spyder Street Car
1979 Mazda RX7

Mike Levine

AN sizes are expressed in 16ths. A 6 AN is 6/16 or 3/8, 8 AN is 1/2, etc.

AN is also known as JIC (Joint Industry Conference). It uses a 37 degree flare. SAE uses a 45 degree flare. Other than the #6 and #12, they use the same thread.

Usually the 45 degree flare (SAE) is used in automotive and the 37 degree (AN) is used for industrial like hydraulic applications.

Fuel lines in automotive has used both but technically should only use SAE.

Mike

64 Greenbrier
64 Spyder (needs restoration)
65 Corsa 140, restored
66 Corsa turbo, restoring now
66 Corsa 140 "RR" code coupe fully restored
67 Pontiac GTO restored
69 Corvette 427 convertible restored
2015 Porsche Panamera S
2015 Corvette Z06
1965 AC Cobra (Factory Five)

This sort of fitting makes it easy to go from a hardline to an AN hose.

[www.summitracing.com]

In my case the ran the stock sized 5/16 tube to -6 AN hose.

If you need to join two hard lines, then pre-made 5/16 hardlines with inverted flair fittings (like pre-made brake lines) and inverted flair female unions can be used to make the joints.

You can also get compression fittings with a hose barb end to go from hard line to rubber.

If you go with the nylon hard plastic lines like a lot of modern fuel injecton cars use, you can use 5/16 comprssion fittings, but need to make sure you get brass ferruls to insert into the plastic line so it doesn't collapse when tightening the compression fitting.

If you are mounting the fuel pump under the passenger side floor, someone here mentioned using a bulkead fitting that can be mounted just behind the gas tank.

I got some of these for mine.
[www.amazon.com]

@tony66

Are you referring to full nylon hose, or even the nylon braided stuff that is rubber hose on the inside?

Like: [www.summitracing.com]



Thanks,

Curtis

Curtis

64 Spyder Convertible
Milwaukee, Wi

Former Corvairs
62 Monza 900 Coupe (102/4)
64 Monza 900 Convertible (110/PG)
65 Monza Coupe (110/PG)
66 Monza Coupe (110/PG)
66 Monza Sedan (110/PG)

Use Hard line for any long runs, like under the belly pan. Use bulkhead fittings on the front bulkhead and when you hit the rear bulkhead. Use flex, Teflon, for any short turns. There are adapter fittings that go from AN to NPT. You can use them where other devices are used.

66RTVair
Oregon
1965 Corsa 140 stock
1966 Monza DP Racecar
1968 Monza Parts for now

So can the new copper nickel type rolls of line be used without issue? Like this?

[www.amazon.com]

Curtis

64 Spyder Convertible
Milwaukee, Wi

Former Corvairs
62 Monza 900 Coupe (102/4)
64 Monza 900 Convertible (110/PG)
65 Monza Coupe (110/PG)
66 Monza Coupe (110/PG)
66 Monza Sedan (110/PG)

I have used the Cupronickel for years as fuels line with no issues.

-Tom


63' Monza Spyder Convertable (in process) MY Build Thread
65' Monza MY Build Thread
73' NovaSS 454 Big block (Sold)
86' BMW 325es
98' VW Jetta TDI, for daughter
01' Audi Allroad Stage 3 twin turbo
67' UltraVan 211 "Violet"
NFCC, UMCC
Grand Island, NY

I used Copper/Nickel (Cunifer) on my long fuel line run. It is safe and works fine. I did hear that it doesn't last as long as SS. I guess I'll find out. Watch for a flaming trail behind a Corvair.

66RTVair
Oregon
1965 Corsa 140 stock
1966 Monza DP Racecar
1968 Monza Parts for now



Edited 1 time(s). Last edit at 04/07/2021 07:04AM by BobV66Vair.