Weapon R header...

[CrankyOldMan]

I'm curious about how the change in diameter affects flow velocity and scavenging efficiency. There has been lots of discussions centered around those mechanics for intakes, exhaust headers, mid-pipes, axle-backs and even short downpipes.

Also, are you going to heat-wrap it? I've seen a few people do that to reduce engine bay temps--but I think they have a CAI as well.

[tooter]

Originally Posted by CrankyOldMan

I'm curious about how the change in diameter affects flow velocity and scavenging efficiency. There has been lots of discussions centered around those mechanics for intakes, exhaust headers, mid-pipes, axle-backs and even short downpipes.

Also, are you going to heat-wrap it? I've seen a few people do that to reduce engine bay temps--but I think they have a CAI as well.

I have no idea. I'm just going to install it and drive it and see how it works. Tri Y headers are a very old tried and true exhaust design based on sound physical principles, so I trust in the manufacturer's R & D that it will work just fine.

Discovered that the stock donut gasket won't fit the new header because the stock exit tube is 45mm in diameter while the Weapon R is 47mm for an increase of 4.5%. Thankfully it came with its own oversized donut.

Ground off the excess tubing to fit the donut...



Next comes the installation...