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-   -   turbine housing hitting LIM :( (https://www.rx7club.com/single-turbo-rx-7s-23/turbine-housing-hitting-lim-561914/)

turbo-polak 07-23-06 09:02 PM

turbine housing hitting LIM :(
 
with my SSAC manifold (fd manifold on my fc) the turbine housing hits the lower intake.

the housing is an .84 (its real garrett 'gt35' turbo, no ebay turbo) and its hitting the lower intake...

http://i29.photobucket.com/albums/c2...nesmaller1.jpg

http://i29.photobucket.com/albums/c2...nesmaller2.jpg

http://i29.photobucket.com/albums/c2...nesmaller3.jpg

any ideas?

i was thinking about either getting a t4 flange, and spacing the turbo away from the manifold a little bit more, which would bring it out from the LIM a little bit more...

or, a spacer/flange, if i can find one for cheap and local, between the manifold and block..(this would be ideal)

OR, just leaving it the way that it is, and grinding down some of the LIM, and some of the turbine housing so that i can get the housing heatwrapped/blanketed...

any suggestions?

cheers,Dan. :)

hondahater 07-23-06 09:06 PM

to me it looks like you could just grind down some on the intake manifold and housing however I bet you could use just a t4 intake flange on that thing and it would space it out as well.

GtoRx7 07-23-06 09:14 PM

You are using a FD exhaust manifold on a FC engine. The hitting issue is what should happen. The FD intake is much closer to the block, hence its ports being angled. The way I fixed it, and many others fixed it, is to use two racing beat exhaust flanges, and use two exhaust gaskets. This will space out the ss auto mani about 1" and give you the room you need. Hope that helps.

turbo-polak 07-23-06 09:38 PM


Originally Posted by GtoRx7
You are using a FD exhaust manifold on a FC engine. The hitting issue is what should happen. The FD intake is much closer to the block, hence its ports being angled. The way I fixed it, and many others fixed it, is to use two racing beat exhaust flanges, and use two exhaust gaskets. This will space out the ss auto mani about 1" and give you the room you need. Hope that helps.

thats what i figure'd i should do...

ill look for a flange
:bluesuit:

Turblown 07-23-06 11:38 PM

I sure wouldn't want a turbine housing that close to my intake manifold( if grinding)..

turbo-polak 07-23-06 11:55 PM


Originally Posted by 1Revvin7
I sure wouldn't want a turbine housing that close to my intake manifold( if grinding)..


ya, i know hey? :Kill1:

it pretty much defeats the purpose of having an IC. hah!

well my tuner has a gt35r with the same manifold... with a turbo blanket making 380whp at 14psi with a front mount...

hondahater 07-24-06 07:44 AM

so are the studs on the engine long enough to put to exhaust flanges?

FD Rey 07-24-06 03:40 PM

I had the exact same problem with my custom manifold. I had the guy cut about 1/2 inch off one side of both runners right under the plate, then had him bend the plate down and reweld. So in other words... The flange now sits more of an angle clearing the turbine housing from the LIM.

Trav 07-25-06 12:12 PM

You should be able to use 1 RB header flange as a spacer and have no contact. This is what I've test fitted on my RE swap in my vert. I don't know how much different the RE is as far as LIM spacing, but from what I've seen elsewhere, I don't think you'll need 2 flanges. It would be easy to test though, just stick some oversized nuts over the studs as "spacers" and stick your manifold back on. Determine the "optimal" spacer size and buy accordingly...

KNONFS 07-25-06 01:32 PM


Originally Posted by turbo-polak
with my SSAC manifold (fd manifold on my fc) the turbine housing hits the lower intake.

the housing is an .84 (its real garrett 'gt35' turbo, no ebay turbo) and its hitting the lower intake...

https://i29.photobucket.com/albums/c...nesmaller1.jpg

https://i29.photobucket.com/albums/c...nesmaller2.jpg

https://i29.photobucket.com/albums/c...nesmaller3.jpg

any ideas?

i was thinking about either getting a t4 flange, and spacing the turbo away from the manifold a little bit more, which would bring it out from the LIM a little bit more...

or, a spacer/flange, if i can find one for cheap and local, between the manifold and block..(this would be ideal)

OR, just leaving it the way that it is, and grinding down some of the LIM, and some of the turbine housing so that i can get the housing heatwrapped/blanketed...

any suggestions?

cheers,Dan. :)

Here is how I solved the issue:

Originally Posted by KNONFS
I had a similar problem, but it was the other way around; the turbo would not cleared the intake manifold. Solution, get two turbo flanges, and have somebody weld two tubes (for both exhaust runners) between each flange. The trick is cuttings the tubes at an angle on one side, once you weld everything together, you will have a flange than is at a flat angle (horizontal) and the other flange will have an angle (sort of like a ramp).


FC3S.USD 07-25-06 04:08 PM

2 very good solutions have been posted.

The 2 flanges or rewelding the exhaust intake flange. If you have acces to a welder then that would be the easiest and cleanest.

FD Rey 07-25-06 07:58 PM

I still say my solution is not only a lot easier but cheaper too.

turbo-polak 07-25-06 08:50 PM

im getting a flange tonight, and longer studs:)

ill post some more pictures when im done:)

thanks guys

cheers,Dan.

KNONFS 07-26-06 10:36 AM


Originally Posted by FD Rey
I still say my solution is not only a lot easier but cheaper too.

Here is what my welder said when I asked him to cut the flange (when i originally had the issue)


Originally Posted by KNONFS
I see what you are saying but can't think of how to pull it off with out weakening the manifold. All that heat put into a small area combined with not being able to gas perge it on the jig would not yeald good results...


KNONFS 07-26-06 10:38 AM


Originally Posted by turbo-polak
im getting a flange tonight, and longer studs:)

ill post some more pictures when im done:)

thanks guys

cheers,Dan.

Good Luck, when I added the total cost of an extra flange, longer studs, and an extra exhaust gasket I ended up going the other route :)

turbo-polak 07-26-06 03:02 PM

i already have like 4 extra gaskets, i get studs for free, and a flange is $20.. oh well.

ill post some new pics soon.

-Dan

KNONFS 07-26-06 06:17 PM


Originally Posted by turbo-polak
i already have like 4 extra gaskets, i get studs for free, and a flange is $20.. oh well.

ill post some new pics soon.

-Dan

I would've gone that route too, if I had the extra gaskets :icon_tup:


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