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My Custom Long Split Dumps For Gtr

femno

By femno,
in Fabrication

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femno Grand Master

femno

Posted
Posted

Just thought it would be good to share with my fellow fabricators my custom long split dumps for my GTR.

Basically i though f**k paying almost a grand for trust extended dump and front kit, ill make my own!

In a nutshell, I started off with some Just Jap stainless dumps, chopped the gates off and extended them, welded up the holes in the main pipes where the gates used to plumb back in.

post-17897-1199712432_thumb.jpg

post-17897-1199710507_thumb.jpg

post-17897-1199711316_thumb.jpg

I bought some stainless 1.5 inch mandrel bends and chopped and used those to make the gates.

post-17897-1199712093_thumb.jpg

Im no expert welder with the mig, but by the end of doing these i wasnt too shabby...(being modest)...thats why i grinded back most of

the welds cos they looked shit haha. My flange weld isnt too bad cos that was the final bit...:cheers:

Did a bit of test fitting with a spare block and head...bloody tight fit it was...

post-17897-1199710753_thumb.jpg

post-17897-1199711793_thumb.jpg

I plan to plumb the gates back into the main pipes when i do my custom dual 3 inch zorst...!

post-17897-1199711005_thumb.jpg

Comments welcome! Dont be too harsh tho. :rofl:

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Duncan Grand Master

Duncan

Posted
Posted

brilliant. I was just about to start on exactly this job since they've just change our race regulations to free exhaust systems. We'll run similar setup except keep front and rear turbo exhaust seperate as well - so 4 pipes straight out the side.

the thing that worries me most is clearance putting the motor in since ours comes in and out all the time :cheers: and physical space for the pipes, especially the front one.

what diameter is the wastegate pipe? 1inch?

Beer Baron Grand Master

Beer Baron

Posted
Posted
I bought some stainless 1.5 inch mandrel bends and chopped and used those to make the gates.

Duncannnn! :blush:

nice pipes. never been a big fan of the HKS style dumps as they have 2 pretty small pipes. I'm converted to the big bell mouth dump which lets the gas expand as much as possible as quickly as possible, but yours look like they will work well. :D

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