'64 Heat Riser question

[Norris W.]

This is one of those embarrassing questions that I THINK I should know the answer too, but can't come up with it:

Did the mid year fuelie cars have heat risers? I'm trying to figure what purpose they would serve on a fuel car, but don't recall knowing that they don't. If they don't use the heat riser, does it need a spacer on the left side for the pipe to fit right?

[Bob J.]

Re: '64 Heat Riser question

Norris, the 64 FI engines used a spacer, not a heat riser with a valve.

[Norris W.]

Re: '64 Heat Riser question

Thanks Bob. Is that true with the '62's and '63's also?

[Bob J.]

Re: '64 Heat Riser question

Thanks Bob. Is that true with the '62's and '63's also?

Yes, I think 62 -65 used the same spacer.Bob

[Duke W.]

Re: '64 Heat Riser question

No FI engines had heat riser valves. The FI spacer was just a partially machined heat riser valve body that didn't have the spring or valve. There is a 2" version used with 2" outlet manifolds, and a 2.5" version for 2.5" outlet manifolds.

'64 FI engines have 2.5" manifolds and spacer.

Duke

[Norris W.]

Re: '64 Heat Riser question

Thanks guys. I've actually used the spacer in the past on some stock appearing Big Block stuff that had manifolds that I didn't want a heat riser in, so I'm familiar with the 2 1/2" version.

What I'm REAL unfamiliar with is fuelie stuff. I've got 2 of 'em of my own that I've never heard run (I've never even ridden in a fuelie) and a friend just bought a '64 Coupe that's not all he thought it'd be, so I guess I'm looking at a steep learning curve helping him with it while re kindling the enthusiasm for two of my old warehouse queens.

[Stuart F.]

Re: '64 Heat Riser question

The spacer is on the right side, and the reason fuelies don't have a heat riser valve is because they do not have exhaust cross over passages in the manifold like a carbureted engine to preheat the mixture. The passages are in the heads, but are blocked off at the manifold.

Stu Fox