PeteyTurbo

I have an 85 SE that I am in the process of building..I want to do my own 3 inch mandrel bent exhaust and I was wondering where I could get the flange to fit the pipe to the turbo..I was just thinking of getting one made but if there is a supplier with theese I'd rather not go through the hassle..Thanks a bunch for your help guys and thanks for the space..

setzep

Check racing beat, they have a lot of flanges. You are talking about a flange for the stock turbo right?

Welcome to the Forum.

PeteyTurbo

Yes,thanks setzep..Thats what I need..Hopefully they have them in stainless..FYI,I've been more of a reader then a poster,been visiting this site for awhile now,thanks for the help..

Actually,I just looked and it seems they only have 2.5 inch..Any other ideas??Thanks again!

Directfreak

iTrader: (2)

Yeah, Racing Beat makes a 3" downpipe for the TII, that some of the other Turbo FB guys have used with success.

PeteyTurbo

I guess I should just call them..I dont want to spend 100 or whatever for a dp that I may have to cut up..I'm trying to keep cost down and build the whole system myself..Mabye I can even bore the 2.5 flange RB sells to 3 inch..well,again,if anyone knows of a place that sells 3 inch stainless turbo Ex./outlet flanges please let me know..TIA

Directfreak

iTrader: (2)

If you're going to use any stock 13BT Turbo, then just use the 2.5 downpipe.

Are you using the stock Turbo exhaust manifold?

Are you planning to upgrade turbo's in the future?

PeteyTurbo

I am currently using stock setup until I get the other motor built..I want to do 3 inch because I want to use 2 mufflers and I still want enough flow..I plan on upgrading to either a T-04E or turbonetics turbo mabye as soon as this summer and it may or may not incluse the HKS manifold and WG combo..Have not decided yet..

moremazda

iTrader: (4)

try this link!!!

Directfreak

iTrader: (2)

Sounds good. Make sure you port the **** out of the wastegate, or you're gonna creep boost big time, especially an S4 TII.

fatboy7

You can't really bore out the flange on the turbo to 3", cause the turbine outlet is only 2.5". I'm using the 3" RB DP. They mold the three inch pipe into the flange in such a way that allows you to still access the bolts, while converting to 3" within the first 1" of the pipe. Its well engineered, I would swallow the $125 and get it, it will save you money and time in the long run.

If you go with the HKS manifold and the T-04E you'll have to make a custom job, without question. And I agree with DF, that you need to port the wastegate, if your keeping the stock turbo.

PeteyTurbo

Fatboy7:So you're saying you are using a RB downpipe??Is your car a 1st gen??I will have to modify the pipe then to work on a 1st gen correct?Thanks again for the help..

moremazda

iTrader: (4)

My car is first gen, and I have the RB down pipe. You will not need to modify the down pipe to make it WORK. However, it will hang lower than the frame rail. If the car sits any lower than about 1" from stock you will need to modify the down pipe.

I had to modify mine. I removed 1" from it's vertical hight and I placed three (3) 3/32" pie cuts in the bend of the down pipe to bring up closer to the chasis, and it fits really nice.

Ryan

82streetracer

iTrader: (1)

Where can you get a pipe to fit on a to4b???

its a V band something, but I cant find any info on it.

and the single turbo forum is slow.

Ill have some more pix of my turbo swap soon. The motor is in and ill be ordering a to4b soon.