Fullthrottledan1

OK, Im having some problems making a turbo collector that fits right. Im using 1.75" 304ss piping and trying to fit it to a 3" v band. whats the best way to try and make it? Ive never made headers before, let alone a collector. I can weld but dont know where to start.

so far i have 4 peices of 1.75" that have 3 inch legs and a 20 degree bend in it, am i going the right way?

here is a pic of the my first header tacked up


any help would be awesome

Dan

hellbents10

iTrader: (10)

Two ways I do it. Depending on weather its a budget lower hp setup or a all out set up. something like a burns 4 into one merge (slip on) or I use custom ones from SPD. Then go to a 3" v-band flange or into a t4 or 6 flange. Or the cheaper rout would be to go with a formed 4 into one collestor. A little more work as you have to make a piece to fill in the gap between the four pies and just weld around the four when done. Then go to a v-band or t-4 flange. You can get the round to t4 or t6 transitions from SPD also.

Fullthrottledan1

id rather not buy a peice though, im trying to challange myself ( probably end up buying a peice and spending twice the money, just like usual , lol)

its for the truck in sig. GT-40,88mm turbo ball bearing on my 370ci motor. guess ill keep plugging away at it

Lasershop

iTrader: (2)

It is a lot tougher than it looks. I have just been there. A merge collector requires some kind of jigging so all 4 parts are near exact the same. I decided to have them made. Formed collectors are cheap but I felt the headers I made were better than that. If you decide on the formed collectors, wait till' you get them before you weld up the headers. You will need to square off the inside corners (so the center forms a cross) of the tubes for the collectors to fit well. It is nearly impossible to do that with stainless once they are welded up. If you are bent on making them (nothing wrong with trying, but its not that easy to do a "GOOD" job) , get some pvc pipe to practice and figure out the cuts and you will see what I mean.

99.9percenter

iTrader: (2)

Yes, Dan You are going the right way. Each piece needs to be cut twice to begin. Do you have access to a v-block? You clamp it it on both sides (of the 45*part) to lay out the lines to cut. Do you have a surface (height) gage? Look carefully at the pictures of merge collectors on the net. The legs are cut twice at 45* to the other leg. forming a 90* . -Tim

frcefed98

iTrader: (16)

Found this on the net, maybe it'll help?
http://home.comcast.net/~engloid/col...collector.html

J

Fullthrottledan1

yay, that helps out a little, but they need to be strait, not on an angle like the one shown. just have to figure out how to put a 20 degree angle in there. PVC here i come!

frcefed98

iTrader: (16)

Use tubing that has a slight bend in em, maybe 45 degs?? Looks like the burns collectors have a slight bend in the tubing so all the pipes end up straight. More pics here to reference..to give you some more ideas?
http://www.burnsstainless.com/MergeC...ollectors.html


Awesome looking headers btw..

Fullthrottledan1

Those look like the 20 degree bends that I have. I just dont want to break down and pay that much for a collector, especially since i need 2.

Thanks on the header, its my first attempt at it and dont think i did too bad. Ill keep you guys updated. The turbo should be here this week so ill be working on it all weekend long