Length of GTV6 injector to plenum hoses?

I only have a spare fuel rail with a few still attached. Looks like about 1 1/4". I ordered replacements from Centerline, which are the correct length, and also nice and straight (I got bulk hose once, and the curve from the roll made them harder to install).

One question, and one suggestion:

Were you able to salvage all 12 of the small metal caps? My rebuilder said that it's a good idea to use them. It might be worth asking if they have a fresh set.

I went with 6 new poly hoses for the plenum since mine were original (brittle/questionable). Came out nice, and got rid of one possible future vacuum leak.

They are 1.5".
You can order the complete fuel lines in sets from www.hpsimotorsports.com. They sell the fuel lines in 3 sections; under hood, under car, and at fuel tank. They all come precut to length with clamps and instructions.

Ideal hose clamps # 52F15 are tried and tested on race winning GTV6 engines and are a good alternative to the hats.

Eric’s tape makes it sure look like 30mm right on the nose. A reminder that these are 7.5mm id, which would be important to get if reusing the cups.

vintagemilano said:

Eric’s tape makes it sure look like 30mm right on the nose. A reminder that these are 7.5mm id, which would be important to get if reusing the cups.

Click to expand...

Do you mean 40mm? Looks like 1.5" to me or 39mm if we're splitting hairs.

OSIDEDM said:

One question, and one suggestion:

Were you able to salvage all 12 of the small metal caps? My rebuilder said that it's a good idea to use them. It might be worth asking if they have a fresh set.

I went with 6 new poly hoses for the plenum since mine were original (brittle/questionable). Came out nice, and got rid of one possible future vacuum leak.

Click to expand...

I wasn't- had to snip half of them and the rest are not in good shape. Thought I saw another post here that said they were potentially unnecessary because of the relative psi, but not sure I want to follow that advice.

There could be some parallax error but at the top it looks like the 5mm mark after the 10 is 1-1.5mm high, then the 5mm mark after the 3 also looks 1-1.5mm high.

nice service kit in the UK for various alfas
(I had my spider injectors serviced there, good service, I just delivered the whole rail with injectors still on and it came back all fitted correct)

they do various for V6 alfa, like here, pintles, ferrules, correct hose (aramid for modern fuels), tiny filters etc.
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BK GTV6 said:

I wasn't- had to snip half of them and the rest are not in good shape. Thought I saw another post here that said they were potentially unnecessary because of the relative psi, but not sure I want to follow that advice.

Click to expand...

I agree with alfaparticle. The best way to go is 12 new, high quality, aftermarket clamps. Then again, the cheap little "hats" seemed to do the job for the last 30+ years....
I'd still advise really looking over the 6 plenum-to-manifold tubes. If they're original, that's alot of area for vacuum leaks to happen. And wrestling off the plenum only stressed them a bit more. I like poly, but even new original replacment (rubber) pieces should be good for a long time. Best of luck.

I posted the length of these hoses in one of my rebuild threads, I think I settled on 42mm... its important to have it in the right range but not sure how much 1 or 2mm might affect it.

The metal cap end "top hats" for the fuel injectors are available new but are tough to find. My injector service vendor sold me a whole bag of them and I have a lot left over that were harvested, media blasted, and re-plated. If you need new ones send me a PM.

I have had several cars in the past that had hose clamps in this area instead of the top caps, and they leaked. My injector service vendor said it reduces the life of the hose in that application considerably and makes it a higher risk for leaks because the barbs on the injector and rail are quite sharp, and a tight clamp simply cuts the hose on these barbs when you tighten. May be fine for most, but be aware it is not necessarily ideal.