info. for manifold material
 

well i'm going to start "trying" to weld some manifolds. if anyone knows what type of butt weld fittings i will need, it would be greatly appreciated! i know that i'll need 1.5in butt weld fittings, if anyone knows what guage and grade and all that ----. by the way you know hmt members are going to get the special discount ;) it just might take a little time before they start looking nice, but this is hmt, so who care what they look like.

Re:info. for manifold material
 

SS 304 for the Elbom
Mild Steel 1018 for all flanges

Re:info. for manifold material
 

I buy all my 90's from mccastercar and all my straight material from our local steel co. flanges are best to buy in group buys were ever you can. if you plan on making these to sell i would jump on any group buy you can and buy like ten flanges at a time.

Beau

Re:info. for manifold material
 

yeah, i'll prolly be getting my flanges from typert, i'm just gonna buy a few at first to get the hang of it. hopefully it won't take too long before i'm making some quality, good looking manifolds. if anyone has any advice on making the manifolds, please feel free to share.

Re:info. for manifold material
 

alright, so i've been reading up, i read that ss 304 (schedule 40) is really tought to mig weld, is this true? if so, i heard that schedule 20 i a lot easier to mig weld, but is it strong enough for a turbo manifold? could anyone with some manifold welding experience email or im me (i might not get back with you until monday, i'll be out of town this weekend)

Re:info. for manifold material
 

you can mig shedule 40.just bevel the ends of all the joints for good penitration.I've used shedule 10 s.s. before and it holds up great and lighter.but it was tig and purged.

Re:info. for manifold material
 

Schedule 20/10 or whatever is not much thinner than schedule 40 if you compare the two side by side you can't tell much of a difference. There are also cast iron and cast steel fittings try to get the cast steel.
If you want to save a little on shipping i could probably get everything for you a one time -when you get the flanges.

The best price in town here for Schedule 40 fittings is around $8.00 for the Tee's and $4.00 for the 90's - I usualy buy them in bulk and save 10-20%. ut i have to buy at least 50 of each.

Re:info. for manifold material
 

try your local plumbing supply first, it costs way less than mcmaster. $4 for Tees, $1.75 for elbows, that's for schedule 40 butt weld steel, not SS.

Personally I wouldn't bother with SS unless you are using a complete SS setup, all flanges etc. because the expansion properties of SS are way different from mild steel. You might as well use all schedule 40 mild steel, it will probably hold up better than a mixed steel manifold. Mild steel is much easier to work with, and your welds with a mig will be much easier and nicer looking. You need a good mig welder to do a good job with thick SS.

I would be very suprised if mild steel would ever fail, the 1.5" sched 40 have 1/4" wall thickness, if you want to get the extra mile out of it, get it stress relieved, the flange machined and then ceramic coated.

http://www.sdsefi.com/techheader.htm


good luck

Neil

Re:info. for manifold material
 

go to a metal scrapyard for the materials if you want stuff dirt cheap. Thats where I got all my metal for my manifolds. Its alot cheaper to make your own flanges but it takes time unless you got a plasma cutter than its cake.

Re:info. for manifold material
 

this header is like crap, there is almost no merge smooth merge collector ::)