Port or header?

XR4Ti / Sierra / Sierra Cosworth Discussions - Questions, problem resolution, general talk, technical tips and modifications.
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Ghost
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Re: Port or header?

Post by Ghost » Fri Dec 11, 2015 1:56 am

Just do a well ported E6 - like people said above, the center mounts tend to crack. A ported E6 will support stupid power in a street driven car reliably.
'85 XR4Ti: 8.8+T56 swap, AEM standalone, HY35 on a full rebuild... What's the bluebook on these cars again?
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Choochoochoo
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Re: Port or header?

Post by Choochoochoo » Fri Dec 11, 2015 10:13 am

Ghost wrote:Just do a well ported E6 - like people said above, the center mounts tend to crack. A ported E6 will support stupid power in a street driven car reliably.
Good enough for me.
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Re: Port or header?

Post by Grayson » Fri Dec 11, 2015 11:02 am

Regarding the discussion of a flex section, I also recommend their use, and I always place mine right after the downpipe. A 15lb muffler sitting on the end of a 14' torque arm isn't doing your manifold any good. It should be noted that the XR is equipped with flex couplings from the factory. That exhaust connection with the rounded mating surfaces and springs allows the exhaust to sway independent of the downpipe.

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Re: Port or header?

Post by xrdoc » Sat Dec 12, 2015 1:06 pm

Tried my hand aswell with two center mounts and both went bad. I have a ported e6 and havent had a problem yet , i also recommend the flex pipe right after the downpipe. I am looking into a gnari manifold aswell and am looking forward to the external WG. But no one on here seems to have any input really on them. I wouldnt mind some before I go and spend that kinda money too

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Re: Port or header?

Post by Choochoochoo » Sat Dec 12, 2015 1:27 pm

I've always been a little more partial to the internal waste gates.. But that might just be because I'm not in the pursuit of huge hp numbers... Or maybe it's just be aid I haven't really looked into the external setup too much.... I'm guessing all it would take to block it off would be just a simple block off plate, right? That way should I change my mind later on it would be a simple fix...
2000 Dodge Durango 5.9 (gone, and missed)
2008 Mercedes Benz R320CDI
1985 Merkur XR4Ti

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Re: Port or header?

Post by hEaT » Tue Dec 29, 2015 6:07 pm

Choochoochoo wrote:I've always been a little more partial to the internal waste gates.. But that might just be because I'm not in the pursuit of huge hp numbers... Or maybe it's just be aid I haven't really looked into the external setup too much.... I'm guessing all it would take to block it off would be just a simple block off plate, right? That way should I change my mind later on it would be a simple fix...
Yep, either way. I have an EWG flange on my manifold which is currently blocked. You can also hold shut the IWG flapper so you don't need to change turbine housings. You can be setup for both and run what you prefer.
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Re: Port or header?

Post by xrdoc » Wed Dec 30, 2015 11:41 am

Are you running the gnari manifold heat?

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Re: Port or header?

Post by hEaT » Wed Dec 30, 2015 11:49 am

xrdoc wrote:Are you running the gnari manifold heat?
Nope, Huber manifold with T4 flange.
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Re: Port or header?

Post by xrdoc » Fri Jan 01, 2016 11:47 am

Hmmmm

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