T4 Exhaust Manifold with External wastegate

[robhojy]

howdy all

iv looked about for some time but have been unsure where to get a exhaust manifold for my precision T67 dbb, its a T4 .68 exhaust, .75 comp

i already had an XS power manifold but the turbos comp housing fails

not sure what to do about it,

what manifolds are you guys using for the larger turbo

thanks

 

[starscream5000]

Ebay manifolds are the most used ones around here and are sustaining +500HP on many builds, just inspect the manifold for burs and such, it wouldn't hurt to get it ceramic coated either. I've also heard that there is a fitment issue with the wastegate part of the manifold and it needs to be either bent, or cut and re-welded in a different location, but I'm not entirely sure as I don't own one.

 

[robhojy]

yeh im looking to get around 650hp at the flywheel, was thinking maybe a cast manifold would be best

stainless cracks right?

what are peeps using on their builds

Ebay manifolds are the most used ones around here and are sustaining +500HP on many builds, just inspect the manifold for burs and such, it wouldn't hurt to get it ceramic coated either. I've also heard that there is a fitment issue with the wastegate part of the manifold and it needs to be either bent, or cut and re-welded in a different location, but I'm not entirely sure as I don't own one.

 

[WhtMa71]

If you get an ebay mani it would probably be a good idea to reinforce it and do some deburring where you can. If its reinforced it shouldnt crack.

 

[starscream5000]

Actually, cast manifolds a prone to cracking as well, Try TurboX coatings on the inside and out of the manifold, should protect it quite a bit .

 

[alloyguitar]

I have an ebay manifold and the only issues I've had with the wastegate are that, if you plan on running a dump tube, it gets a bit tight down there.

...I don't run a dump tube, since it's down near the frame rail anyway, but it's really up to you.

I'm guessing that your compressor housing hits one of the runners...is that what we're worried about? If so, mk3brent made a riser to sit his turbo up higher, and away from the runners. I, personally, just used two spacers to raise it up about an inch. Worked like a charm.

Hope that helps,
-Devon Goodspeed

 

[robhojy]

this is the manifold i have:

 

[alloyguitar]

...looks identical to mine.

 

[HommerSimpson]

Im installing that header RIGHT NOW 4/7/08 9:30 pm ... so far ive had to take hammer to it and grind some on oil filter housing as im runing the stock housing...
Personaly i think it sucks and would not buy another.. but was 130 shiped what ya gona do...Ill throw some pics up in a bit ...

 

[Shima]

hmm i was lookin at that one aswell glad i didnt buy just yet let us know how she fits hommer

 

[HommerSimpson]

well here ya go.. I made a thread just for header.. Hope sm don't care

http://www.supramania.com/forums/showthread.php?p=983009#post983009

 

[starscream5000]

It's amazing how much better that thing will fit with just a simple oil filter relocation kit...

 

[IJ.]

Using an SSAC 321 header with my T04z and an IJ built riser for clearence.

Canton Filter relocation block had to be clearenced so it would fit.

 

[HommerSimpson]

Using an SSAC 321 header with my T04z and an IJ built riser for clearence.

Canton Filter relocation block had to be clearenced so it would fit.

Thank you IJ.. I new even a relocatipon kit i would still have had to mod header or something.. :}

 

[Grimsta]

Whats the going rate for those IJ risers

 

[IJ.]

Thank you IJ.. I new even a relocatipon kit i would still have had to mod header or something.. :}

The Permacool type adaptors fit no mods.

Whats the going rate for those IJ risers

LOL it's a 1 off custom piece

 

[starscream5000]

LOL it's a 1 off custom piece

In other words, "if you throw enough money at me, I MAY consider making one for you."

 

[IJ.]

In other words, "if you throw enough money at me, I MAY consider making one for you."

There isn't enough money to bring me out of retirement

 

[starscream5000]

Don't you mean "semi-retired"? I do recall you posting that up one time .

 

[IJ.]

100% retired from the automotive world