I am going from a TD07-08 to a AF61R turbo. Now, my TD07-08 used a 4" vband output while they AF61R is a 3.5" outlet. I have a custom made 4" down/midpipe and I want to reduce the 4" flange on the downpipe to a 3.5" flange so I can clamp it up to the new turbo. I was curious if anyone has came across anything that will do this. I know they have reducers for the turbo side, perhaps I can put one on my downpipe?

ANy input would be great. Thanks
-Darren-

 

Ron from Davinci (DR Autoworks) can have that done before he ships it off. You'll have to add a couple extra bucks but he can do that for you.

 

Lupe, he can reduce the turbo side. Unless I can get him to expand the one that is on the turbo and make it a 4" - I rather enlarge the hotside to bolt right up, that would be easiest. I called him earlier, I'll explain it to him tomorrow maybe he can do something.

Hopefully I can get 500hp @ 20psi with a large street port and my mods, watcha think?

 

When I bought my 60-1 a few years ago the fella from TiAlSport that sold it to me spec'ed it with a 3.5" v-band weld-on bung. I don't know what the housing looks like on your turbo but if it's got a 3.5" port to accept a weldable bung, there may be a 3.5 --> 4" bung similar to mine..

Pics are worth a 1000 words.

 

That is exactly what I am looking for =) Glad to know they make them, lets hope the shop can help me out!

 

It can most def be done with race gas

 

Burns has some SS reducers in two grades. I welded the flange to it and went up in size from 3 to 3.5.I dont see why it cant be reversed using the 3.5 to 4.0