Something cool I found at a local offroad expo

[greasemonkey]

ooh, ceramic coating is good stuff

my brother in law did but he is an idiot

wow. my brother in law thinks his stock 48re will be fine with 'crazy larry' running on his downloader...

it's worth a couple $hundo$ just to not have to change the manifold ever again

[DTanklage]

i know its not powder coat - that stuff would burn off at 250°

just couldnt think of the word

lol

i wonder which holds more heat in?

aspestos or ceramic?


yea, i dont know why anyone would go to the dealer and buy a manifold...

you know it is just gonna crack...

dumb

[PToombs]

The ATS or whoevers manifold should drop EGT's 100 to 150 degrees also. (This means it flows better!)

[ford69557ci]

i have had the factory manifold so hot it turned white and it didnt ever bust bud i replaced it with an ats one anyway

[BC847]

Maybe for the full tilt racer, but not a reliable street truck. The pipe would have to be insulated so as to keep the EGT up for the benefit of the turbine. Obviously that would increase the pipe temps thus greatly accelerating corrosion. As they are, they wouldn't last long IMO. If they were made of the properly selected stainless, then perhaps.

That's if the benefits justified the cost.

Certainly in specific performance applications, the "tuned" equal length primary extractor is the shizzle. . . . In specific applications. The common that comes to mind is the engine that is working in a very narrow rpm range. High or low. But it's pulsing (ramming effect for an intake, extraction for an exhaust) sweet=spot is very pointy. Move the primary's to the proper side and tweak the dual volute turbine housing and . . .. . well, you know.


Crap! I'm tired of typing . . .

[DTanklage]

long time ago we built a '70 510 datsun

put 2l motor in it and 35 psi

the t3 header was thick stuff, and chromed

but after a good blast it looked like you could push a screw driver thru it with little effort

that thing was beyond 'glowing'

it almost looked clear

[Ace]

What's the story on the ATS manifold - why's it better? It looks lighter, to me.

[greasemonkey]

What's the story on the ATS manifold - why's it better? It looks lighter, to me.

it's not lighter, than the stock or the tube header. it's quite a bit heavier and beafier than the stock manifold. the main benefit is it's 3 pieces connected with two big, close tolerance slip joints, so it can expand/contract without shrinking like the stocker. its' shape also lets it flow a lot better, with a slightly larger volume but mostly because of the improved shape. on the 1st and 2nd gen 12v's, the manifold usually doesn't crack, the bolts break or the mounting tabs on the head break off...which means replace the head. on the 2nd 24v's it usually just cracks the manifold.

when I replaced the one on my 96 I saw a 130 degree EGT drop, I was amazed.

[Ace]

Now that is starting to sound like a good way to spend $400.

[ford69557ci]

i have a factory 24v bus manifold that is 2 piece i wish they woulda done somethin like that with the trucks.

[greasemonkey]

Ace, here's a few pics of when I swapped mine over. The stocker'd shrunk up enough that the front two cylinders were leaking, I pulled it off to try changing the gaskets to buy some time and couldn't even get half of the bolts started trying to go back on.

slightly more durable than stock!!

[DTanklage]

slightly more durable than stock!!

wonder which flows better?

[Begle1]

wonder which flows better?

The cool looking one, right? Isn't that the right answer? Or is there some arcane reason why the stock one would flow better?

[greasemonkey]

the stock one flows best but only if the CA EGR bullitsh is hooked up damn california.

[GLHS]

I have had the ported stocker, ported HTT/BD and stock ATS flow tested. The shops flow bench says 223 cfm for stock, 249 for the HTT and 262 for the ATS. The tester also said the ATS was much quieter when on the bench.