This project had a years worth of dust on it until a month ago. I'm working on it again and plan to use this setup on my b13...the car is setup for drag and is undergoing a road track build
I'll post about the car build soon. Enjoy the pics!
This is a thin wall stainless tubular manifold with a double slip fit 4 into 1 collector. This type of design requires that supporting the full weight of the turbo, the manifolds only intent is flow gas to the turbo, it's not structural. Thick wall manis can do both, but the designer is limited with bend radii. So here is the initial mock up of the turbo support.
The idea is modeled in Solidworks
A rough concept is fabricated and test fit
Printing out concepts on paper is cheaper than steel
Starting to take shape after some refinement
The final design evolved into this
Done with that, moving onto the exhaust...now the fun begins. Here is the initial mock up of the J pipe / B pipe. She starts off as 2.25" and gradually expands to 3.0".
All 304SS .065" wall
Added a v-band for easy wrenching
That's layed out, moving onto the guts of the J pipe which are machined from stainless.
This is the beginning of the turbine flow divider.
The initial test fit
Machining the other side of the flow divider. The prototype part is 2 piece so I can manipulate it in the housing for the exact dead nuts final dimensions.
Both parts working together as a gauge in the turbine housing
The final part done and being cut in the bandsaw...I need a larger lathe lol
Using the turbine housing as the fixture to keep everything true and concentric during welding
Mating the flange to the J pipe...getting closer
Alright...time to weld up the B pipe so we can mock up the screamer pipe.
Tacked, cleaned, and ready for some TIG
A vband flange weld
Couple of tube welds
She's buttoned up...move onto the screamer pipe build. The screamer pipe has a slip fit connection with retention springs. It also has a bellows before the rigid dimple die bracing to the J pipe. This screamer probably won't fit with the stock cross member....haven't test fit it on the car yet. Either way, I'm probably going to build a custom cross member.
Test fit and tack the 1.5" screamer pipe
Welding the screamer pipe
This is where I stand...more build pics to follow.