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Anything can work if you know what ur doing! Just give it a shot, what's $16 Canadian anyways??? Plus, maybe you can design something, make a bunch, and get rich off of us escort guys!
 

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Yeah sure you could do that. I'm not sure it would hold up to the heat though. Kinda depends on what type of steal it is. Basically it's the same design as the JGS manifold.
 

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one issue you will run into is the galvinized tees is its a cast part not rolled steel like most exhaust pipes. it will not hold upto the heat that you will be throwing at it. where i work we sell these all day long. so i have a good idea of what they really get used for and its nothing like what your going to try and make it do. the parts don't see more then 300 degrees most of the time and that is a rarity. mostly they are used for pipeing in houses and water main PSI release.

don't get me wrong your ideas are in the right mode but wrong material.

NEUMAN
 

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Discussion Starter · #7 ·
well thanks for your fast replies...yes indeed i think the heat will be an issue....still i'll practice my welds and such on it and will start fresh with more appropriate material then...i'll check my local metal shop for proper stuff.
 

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First, let me say that I design air and electrical system for heavy machine.

One of the worst type of fittings to use is a "T" fitting. Followed closely by 90°elbows. Has to do with turbulance and such. Most people are not concerned is this, but we are! We need fast flowing, hot gases to our turbos.

I would try using some 45° elbow and some "Y" fittings to smooth things out.

FYI - Here is a thread of a question that I posted to an automotive engineering forum regarding turbo manifolds...interesting.

http://www.eng-tips.com/viewthread.cfm?qid=105588

John
 

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OMG why didnt i think of that!?!?! its ingenious but however moronic. see if yourlooking for high performance than thats not the way to go. but if your looking to just turbo then it wont matter. hopefully the welds will hold with that. isnt it galvanized? you should grind the galvinizig off and stay away from it when you weld it. its DEADLY TOXIC. what r u guunna do about a flange? since the runners come out so far you might have clearance problems.
 

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Discussion Starter · #12 ·
Well i guess i'll have to completely rethink the design of my custom manifold then...for sur tees are not super free flowing..but keep in mind that the turbo's adapter plate would be fitted where both tees meet..so the gas would not really has to go through a tee...only a 90 degree pipe... anyways i'm sure you know your stuff so i'll listen to your advices.

I'll get a TIG welder anytime soon now so i'll grab a bunch of stainless steel mandrel bent pipes and start from there. I can't wait to get this machine..as of right now i have a mig welder but i can only weld mild steel.

thanks for the replies

max
 

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Discussion Starter · #13 ·
marclar said:
OMG why didnt i think of that!?!?! its ingenious but however moronic. see if yourlooking for high performance than thats not the way to go. but if your looking to just turbo then it wont matter. hopefully the welds will hold with that. isnt it galvanized? you should grind the galvinizig off and stay away from it when you weld it. its DEADLY TOXIC. what r u guunna do about a flange? since the runners come out so far you might have clearance problems.
Yes, i know it's the less free flowing manifold out there and i also that fumes are deadly....all welding fumes are toxic and I always wear my respirator when welding, painting or simply grinding. I used to not wear it and i had black metal residues in my nose...pretty bad....

As for clearance issues, my creation as the exact same dimensions as the OEM exhaust manifold, so i have plenty of space left.

Anyways, i'm going to start over from scratch with stainless steel individual runners... it will be sexier and it will flow better anyways...

I only tried to come up with a new low cost idea....but as usual it doesn't works out so well lol...
 

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marclar said:
OMG why didnt i think of that!?!?! its ingenious but however moronic. see if yourlooking for high performance than thats not the way to go...
jd_91pony said:
One of the worst type of fittings to use is a "T" fitting. Followed closely by 90°elbows. Has to do with turbulance and such. Most people are not concerned is this, but we are! We need fast flowing, hot gases to our turbos...
You guy's are acting like you've never seen a log manifold before? That's exsactly what a log manifold is, 2 T's and 2 90º.

It might not flow the best....but have you looked at a stock manifold lately, same thing, just one solid peice instead of sections.
Log's have been used for turbo manifold's for many many years, it might not look pretty, but the fact is they work. I've have seen some pretty impressive numbers from log manifolds.
 

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I saw an M3 with a log (that's 4 Ts and 2 45deg ;)) throw the safeties on an 800hp dyno last summer. Before it got on the dyno and heard a 800+ rumor, we were saying, no way someone is making that kind of power with a log..
 

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Yep - that thing looks just like my JGS mani. If you can get stainless parts that could take the heat, that would be one nice mani!

 
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