Redline-Motorsports

iTrader: (3)

We are getting ready to start fabricating the plumbing for a single turbo F-body project. I am using 6.0L manifolds and was wondering what size pipe you guys that have done these are using. This is the pipes that will exit the manifolds and merge before the turbo inlet. I have seen a few pictures but wasn't able to tell what diameter the pipes where. Looks like it might be 2 1/2" . I also need a source for 304L stainless flanges to attach to the manifolds.

Thanks

Howard

notatruews6

iTrader: (3)

From all the reasearch ive done, most people use 2 1/2. thats what im going to use.

smokinHawk

iTrader: (48)

yes most of us use 2.5"
stainless works carries the truck flange as listed in the truck manafold sticky.

SuperZ

iTrader: (2)

I used 2.5 from the manifolds to the turbo then I used 3 inach after the turbo to the motor.You could use 2.5 if you have a not big turbo.

Redline-Motorsports

iTrader: (3)

Thats what I thought!

2.5" from the manifolds to the turbo and I am using a 4" to 3" reducer and 3" out the back. I saw the flanges on SW site. They didn't look like the where stainless.....

On another note....what about options for wastegates. What size is a good size for the bypass.

Thanks guys!

Howard

smokinHawk

iTrader: (48)

i used 2" for my wastegate plumbing which matched my wastegate.

Pro Stock John

iTrader: (34)

Sounds like a fun project, I have a GT47-88 turbo, 8:1 348ci, with a air to air frontmount.

Slowhawk

iTrader: (12)

3" from truck manifolds to T-6 flange. Turbo has to have a 4" downpipe ton an undercar cutout before reducing to a 3" exhaust.

Well,this is for a high HP car.Street car could be reduced more.

SS flanges= Stainless works.

Cmarsh

Once again, did anyone ask what you had John..no one was talking to you!

motorbuilt

iTrader: (17)

S-series turbos have a 5" exhaust outlet and it was recommended to run a 5" downpipe if possible...anyone have a clue how that could happen?

Slowhawk

iTrader: (12)

What do you mean? You can run a 5" if you like,just needs some fine honing to make it fit. A 4" will work just fine for 90% of the people running these Turbo's though.
We have a S85 coming for our truck project and might run the 5" since we have the room but was told a 4" would be fine.