Well i work with guy who is a certified machinist/car lover and he used to work with all these high temp materials. And he was tellin me about a throttle body and plenum spacer he made for Chevy big block with this crank and that differential and this shifter u kno everything muscle guys like to name. He said those spacers got him about 2 tenths off his quarter mile because the engine air was much cooler with these high temp seals....well blah blah i asked him what would he need to make me one for the 280....he said get me gasket and ill make you one for 15 bucks. I said you got it. i mean fifteen bucks thats it. He told me when gets it done and he'll bring it to me at work. BUt anyways i hope he chimes in i asked him to join so everyone could contact him easily and so he can tell you the kind of material being used . I also asked if he could make some for the forum(hybridz/classiczcar) to see if anyone else wanted to get their hands on it. For cheap while its good.

I believe he has a facebook.

Big difference between the intake setup/design on a mid/late 70s S30/S130 and a modern throttle body/MAF/IAT sensor/etc. setup. I just don't see sticking a spacer between the throttle body and the manifold having any appreciable effect on the Datsun setup.

Edited March 17, 201016 yr by sblake01

Maybe spacing the whole manifold off the head might help a little, but a great portion of the heat comes via convection off the exhaust manifolds.

The guy tipped me off how to make these and where to get the parts from and since i have worked as a cnc machinist i know how important attention to detail is so I will be making a thermal intake/exhaust manifold spacer for myself and any others who are interested after results and testing. The spacer will be for a 78 280z with round ports and as much as i would like to do dyno comparison of stock vs stock w/spacer im not because when i remove the exhaust manifold a 3-2-1 header will replace it. So dyno testing will be futile when trying to find the direct effect of the spacer itself. But i will do a dyno test showing the gains of a 3-2-1 header plus exhaust and spacer vs stock. But the main test will be focusing mainly on intake temperatures. So i will be back in a few weeks to share the info.