Hi guys -

I have my fixture right, I think, but I am confused as to how many degrees to rotate the pipe to get a 6-1 merge collector going. Hint - 90 deg is too much it seems lol. Without wasting more pipe (plastic for now), what should I do? 30 deg?

I'm thinking 15 deg, but not positive.

 

Nobody?

 

just buy one from bmc or sls and call it a day.. no need to pull your hair out, waste time, money and material over a collector

 

That's not my style. I want to figure it out so I can make them or tweak them when I need. Its not that big a deal I just figured someone might chime in with how many degrees to rotate the pipe between cuts. I am practicing on PVC so its not the end of the world by any means.

 

rotation should be the same, as any normal collector. angle imo, is a different story, based on which type of opening you are trying to achieve

 

here you go...Next time search "collector" in this forum.....haha

https://honda-tech.com/forums/showth...ight=collector

 

60 degrees from the 0 plane.

 

Figuring out all those angles and what not are the trade secrets of everyone that makes them...

That being said, we would love to help you out
You can always get a collector then measure the angles and figure out a fixture and go from there. Just don't expect someone to give away the answers. In this game Knowledge is a valuable commodity, you either pay for it, or figure it out yourself.

 

I'm doing both

I've bought collectors from people, I just don't want to go pull my turbo to measure rofl

Thanks all - will slice some pipe and see what happens. I need to modify my fixture, but can continue top practice on pvc.

 

Dude I swear I searched. I saw a couple threads of people flirting with it but didn't see that thread! I swear!

 

Its going to be different for you too because your gonna want less angle and straighter longer runners. (or in that tight space the best you can)
You also want to alleviate the points or cathedrals to collect that exhaust gas for that boost creep issue we talked about. Which is going to play into effect on the angle and how you eliminate those when it comes together and you have to grind or cut the points away.

So your collector is very custom. . . .

Get the gauge find the proper angle should be around 15' for that application given space restraints and things. The less angle the better, least amount possible.

 

I have my fixture setup @ 11.5 - 12 deg angle. Just needed pipe rotation amount. Going to mess with it this weekend.

 

It's the same as doing a 4-1, except the middle pieces are cut at 180°, then the inside cut.

The actually angle of the cut is up to you, but the index takes a bit of practice. To get a 90° index on a ~12° angle, I rotate ~94°. Hope that helps.