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Originally Posted by chrischhorn Hey Sasha, how big of a hassle would it be to change the flanges on the downpipes? As I will be installing Momentum headers for the

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Old 01-02-2013, 11:28 AM   #1 (permalink)
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Originally Posted by chrischhorn View Post
Hey Sasha, how big of a hassle would it be to change the flanges on the downpipes? As I will be installing Momentum headers for the 350z DE motor, I know the cat flanges would be different. Would this be able to be something you could custom make for me or would I just need to swap back to 370z HR headers?
Changing them on my end would not be a big deal. However, I am not sure how the DE headers fit on a VHR engine, and if the flanges sit in the same location at the same angle. I would assume they do, since the same turbo cast manifolds are used on both platforms.

I would be able to check the fitmen on my own 350z as well, since everything on that end should be the same geometrically.
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Old 01-02-2013, 11:29 AM   #2 (permalink)
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Changing them on my end would not be a big deal. However, I am not sure how the DE headers fit on a VHR engine, and if the flanges sit in the same location at the same angle. I would assume they do, since the same turbo cast manifolds are used on both platforms.

I would be able to check the fitmen on my own 350z as well, since everything on that end should be the same geometrically.
I think the collector flange sits in a slightly different location, that's why Z1 had to make special test pipes to reach the exhaust... I could be totally wrong, but it doesn't make sense why they'd have to make special TP's for them otherwise.

Edit: I can attest to the fact that 350z DE longtubes do fit our cars on a case by case basis though. At least the flanges are in the right spots. (The primaries themselves may interfere with other components though, the particular set we tested fit fine however)
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Old 01-04-2013, 12:37 AM   #3 (permalink)
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I think the collector flange sits in a slightly different location, that's why Z1 had to make special test pipes to reach the exhaust... I could be totally wrong, but it doesn't make sense why they'd have to make special TP's for them otherwise.

Edit: I can attest to the fact that 350z DE longtubes do fit our cars on a case by case basis though. At least the flanges are in the right spots. (The primaries themselves may interfere with other components though, the particular set we tested fit fine however)
i installed the momentum headers today with DE OEM cats for the moment until my test pipes come in. everything lined up perfect with no need to modify a thing.the DE cats bolted straight up to my exhaust. the driver side header was a pain the *** to put in though so we had to loosen the motor mount to angle the motor to slide it in but the alignment is the same. i HIGHLY plan on ordering this kit in may so i will just need to request special flanges i guess. i feel like i always ask you on special requests lol. first to ask you about the oem oil cooler and now momentum headers lol. what else can i dig up?
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