63mm - 76mm

Gary57 · Post by **Gary57** » Fri Sep 26, 2008 1:47 pm

Ok so I am looking at building a diffused down pipe as I currently have a bell-mouth. Now the bell-mouth I have is 76mm and I cant fit a 76mm diffused downpipe because of the size of the turbine housing exit.

So I want to go with a 63mm for the main and 38mm for the WG. The 38mm pipe will join the 76mm about 300mm away from the turbo.

Problem is how do I join the 63mm-76mm nicely with the least restriction as possible??

Any one done this mod before??

poizen · Post by **poizen** » Fri Sep 26, 2008 1:54 pm

cant you buy a stainless 76-63mm reducer or mild steel

Gary57 · Post by **Gary57** » Mon Sep 29, 2008 8:20 am

You can but they often not the greatest for air flow.

PFB please reply here, you have a 63 DP and a 76 exhaust.

Pinkfluffybunnys · Post by **Pinkfluffybunnys** » Mon Sep 29, 2008 9:11 am

The Only way you going to have enough space is if you go the same way I did 63 DP with a the 38mm joining the exhuast down stream.

I would like to go 76mm DP with the screamer but like you said there is no space.

Gary57 · Post by **Gary57** » Mon Sep 29, 2008 9:18 am

Any idea if there will be an improvement by fitting a diffused DP vs the bell mouth now, a noticable difference??