View Full Version : bought a new exhaust mani - quick questions inside...

01-26-2011, 08:43 PM
Hey guys.* I ended up biting the bullet and buying a new exhaust manifold.* the one i have currently has seen better days, and has terrible runner length issues...* *(pic below is of when it was new.* it has been re welded since then due to a crack. check out the runners haha)


anyways i wanted a manifold that would increase my flow to the turbo / be easy to install, and after doing some research i found out that this was the mani for me (pics below)


so my question is - since i have an internally wastegated (gt2860rs) is there a way for me to utilize the wastegate attachment that is cast on the manifold?* can i just weld my waste gate shut or something?* any info would be greatly appreciated!



Turbo Nerd
01-26-2011, 09:17 PM
You can weld the flapper or the spring no problem so it stays shut, it has been done plenty of times (not necessarily on here but people have made the conversion). I might be doing the same if I stay with a 2871 (internally wastegated also) and run a external wastegate, but I might go to a bigger turbo next winter.

01-27-2011, 06:51 AM
Or you can also buy a block off flange and save money by using your internal wastegate.

Do you have boost issues (lag/creep)?

01-27-2011, 07:13 AM
I'd avoid permanent things like welding. Could always just somehow clamp it shut externally. That's just me though.

01-27-2011, 09:12 AM
You should just leave it alone IMO. If it works fine, don't mess with it. If you really want an external WG, get the Tial 38mm and weld your current one closed. I always like the sound of open exWG dump.

01-27-2011, 11:07 AM
I suppose it would make for more hassle than worth... Dont fix something thats not broken!

01-27-2011, 09:43 PM
Just keep it internal. Its just one less piece to crack in your exhaust.