man exh. manifold on an auto

[ramfan98]

I need a new manifold for my auto 1g, but the only one they have is a manual. Can I still use it?

 

[Mitsu RacerX]

here ya go..
eBay Motors: 91-94 Eclipse Talon Laser Automatic Turbo Manifold 4G63 (item 110364690900 end time Apr-14-09 21:30:54 PDT)

 

[habitatguy187]

here ya go..
eBay Motors: 91-94 Eclipse Talon Laser Automatic Turbo Manifold 4G63 (item 110364690900 end time Apr-14-09 21:30:54 PDT)

Wow that's super expensive.

You might be able to port the 13g turbo enough to use a manual exhaust mani, someone else will have to chime in here. But I know that the head bolts are the same, it's just that the collector hole is bigger on a manual manifold. So basically you don't want a bigger manifold hole than your turbo inlet, see what I mean?

 

[JUANPSI]

manual and auto manifolds are the same

 

[habitatguy187]

manual and auto manifolds are the same

Maybe for galants, not for 1Gs though.

 

[ramfan98]

What are the 1g manifolds made out of?

 

[Mitsu RacerX]

looks to me like they are cast iron

 

[jrohner]

You can use a manual manifold. The only difference is the outlet going to the turbo is smaller on an auto vs the manual car. I ran a manual mani on my auto with a 13g for a while. If you feel like spending some time to make it right, and maybe gain a couple HP, you can port the turbine inlet on your turbo to match the manual manifold.

 

[ramfan98]

Ok thanks guys.

 

[habitatguy187]

You can use a manual manifold. The only difference is the outlet going to the turbo is smaller on an auto vs the manual car. I ran a manual mani on my auto with a 13g for a while. If you feel like spending some time to make it right, and maybe gain a couple HP, you can port the turbine inlet on your turbo to match the manual manifold.

Wouldn't this cause excessive back pressure?

I've been reading alot about 13g turbo's and people have said that they really come alive once you port them. Only thing is I'm not sure if you can port them large enough to match a manual manifold. I wouldn't want to run one though w/out porting the turbo also, even if you can't get a gasket match you could get it closer.

 

[pboglio]

13g's are restrictive little buggers, makes a T25 feel like a 20g in comparison. 2g exhaust manifold will work with a little corner grinding to clear the power steering pump. I agree that port matching will help. I still have my Garret "50 trim" modified TD04 turbo. Full boost by 2500 rpms and perfect for daily driving an automatic.

 

[xsboost]

If you really want a auto manifold I have one sitting around taking up space.

 

[toofast82]

If you really want a auto manifold I have one sitting around taking up space.

Is yours 1g or 2g? because the 1g auto has a smaller collector. 2g manifolds are all the same.

 

[xsboost]

It's a 1g. No cracks. I marked the gasket size of the manual manifold as a reference so those who didn't know can see just how much bigger the manual outlet is than the auto.

 

[toofast82]

yeah, thats definitely the 1g auto. i have one laying around, but its cracked on the underside. Yours looks good though!

 

[Rob10_99]

Holy hell thats a lot of grinding to do. Get a good carbide bit and have atter.

 

[toofast82]

Holy hell thats a lot of grinding to do. Get a good carbide bit and have atter.

He has a 13g turbo, so that manifold would fit perfect. It's probably not worth grinding a 1g a/t manifold to match a 6cm or 7cm turbine housing when you can purchase a 2g manifold for <$50

 

[habitatguy187]

Call me crazy but I've been wanting to get a 1g auto and only do very basic mods, still keeping the sidemount. It'd be a zippy little DD.

 

[toofast82]

Call me crazy but I've been wanting to get a 1g auto and only do very basic mods, still keeping the sidemount. It'd be a zippy little DD.

With the Roadsurge shiftbox or manumatic mod, the trannies shift nice and quick at 100%pressure and seem to last

 

[xsboost]

Call me crazy but I've been wanting to get a 1g auto and only do very basic mods, still keeping the sidemount. It'd be a zippy little DD.

I loved my 1g auto gsx. As soon as I get a decent job and get some bills paid off I want to get another one. I say go for it. Autos don't get the respect they desrve.

 

[AK Thunder]

Thread Revival!

Wouldn't this cause excessive back pressure?

I've been reading alot about 13g turbo's and people have said that they really come alive once you port them. Only thing is I'm not sure if you can port them large enough to match a manual manifold. I wouldn't want to run one though w/out porting the turbo also, even if you can't get a gasket match you could get it closer.

I'm in a situation where I cannot afford to currently replace my 13G but I have a really bad exhaust leak from my exhaust mani, I have a 1G manual mani I got for 5 bucks a few months ago and was wondering if could I run it.
I may be able to slightly port the exhaust side of my turbo, but would I have problems if I don't?
I'd rather not spend the 150 on rockauto for the auto mani w/ gaskets unless I have no other choice.

 

[Bud92gsx]

manual and auto manifolds are the same

No they are not..The part that flows intot the turbo is larger on the manual manifold...You can use the manual manifold, or a 2g manifold..I would also port the in on the turbine housing, just to match it up..But you don't have to..

AK thunder go ahead and put on the manual manifold...

 

[AK Thunder]

That's all I needed to know sir!
Thank you. You've brought me some relief .

 

[Bud92gsx]

Happy to be of help..