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Author Topic: XR2 Aftermarket Replacement Manifold  (Read 1146 times)

Rocketman

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XR2 Aftermarket Replacement Manifold
« on: February 17, 2009, 10:27:00 AM »

Very pricey though...you'd be best off upgrading your turbo to something bigger with this manifold too.

Probably would need to install an O2 sensor in the downpipe with one of these.

http://www.turbinetech.ca/produit_detail.php?id=34&SESSID=6d9d3ef779e1b29471ea48dbc1499ae4&lang=AN
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Gus Kelley

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XR2 Aftermarket Replacement Manifold
« Reply #1 on: February 17, 2009, 11:07:00 AM »

Hey Rocket! It's a nice looking unit and as you said a bit pricey. I've already got my tube header as I'm preparing for my motor build. One thing I've understood is that equal length tubes on a turbo exhaust are not as important as on an N/A as far as scavanging effects are concerned. So needless to say the unit I have is not equal length but close and does have large ports and tubes. It's really light and I'll have to provide a bung for 02.  Gus
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Rocketman

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XR2 Aftermarket Replacement Manifold
« Reply #2 on: February 17, 2009, 04:13:00 PM »

Equal lenght runners are not nearly as critical in turbo vehicles, but as you approach high HP levels the effect it has on flow can make a huge difference.

A log style manifold doesnt flow very well compared to a manifold with individual runners
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1992xr2

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XR2 Aftermarket Replacement Manifold
« Reply #3 on: February 17, 2009, 04:42:00 PM »

Log manifolds don't usually make signifcantly less power until ~400whp
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Gus Kelley

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XR2 Aftermarket Replacement Manifold
« Reply #4 on: February 17, 2009, 07:35:00 PM »

Hey Guys! Thanks for the banter. Yes it is a log style manifold. It's not as good as an I/R header, but it is a very big improvement over stock manifold. The big hit on a log is #s 1 and 4, the pulse tends to push against each other, but as long as the outgoing is open and freeflowing, it will work nicely. And yes 1992, the higher the horsepower; the less effective. At what level this becomes evident I don't know. Hopefully it won't become an issue at the power levels I want to reach.  Gus
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