im building a turbo manifold for my s2000 it will be my onlyone i make for it so it has to be able to be good for 1500hp when the time comes. i also want to do something different and think 2" will be cool. am i going to loose too much volicity with piping so large? anyone have any expert exp.

 

My s2000 turbo manifold is "around" that diameter. Pm me if you'd like. Did something a little different and is working quite well.

 

Pics! lol Sounds cool.

 

i'd say sounds big lool!

 

I don't have any personal experience with Hondas but a customer of mine has 2" tubing for his headers on a 4.6 and he is making around 1800hp. So I don't think it sounds outrageous for a Honda making 1500hp to use 2 inch pipe.

 

so i just bought some 2" TUBING! should be fun.

 

Awesome! Looking forward to this!

 

 

s2000 sidewinder kit with gt42 2" primarys on an old build

 

I was gonna step 1.625 to 1.750 on mine, RX7s use 2in SCH tubing and I've used a pair once to connect a twin scroll flange to two 1.5 sch runners.

2in Schedule is nearly 2.25ID primaries, on a turbo car I couldn't say that'd be helpful for power, area of a circle is exponential, so one 2in tube has nearly the same area as two 1.5in tubes.

 

he is using tubing now...no more schedule pipe crap

 

Oh, missed that.

yall post your 2in primary manifolds up, I want to see.

 

let me start off by saying i have no idea what im doing. but this **** is hard.and my mig welder likes to melt holes in the tubing.

 

haha, that's how everyone starts. are you using stainless? if so, you will want to back purge it when you weld it up. looks good so far. when mig welding the metal heats up as you go and changes the need for heat and wire speed. the longer you weld, the less heat you need to put into it. i used to wonder what the hell was happening, as i was making great welds and all of the sudden i'm blowing holes all over the place. best bet is find the sweet spot on your welder and then take your time. let it cool down after a bit and then start again, overlap your start stops. again, looking good

 

Looking good! I like it.

 

i changed it up 1 runner left im out of material.im suprised i got this far with what i had.

 

This is interesting, lol.

 

Looking good!

 

I've had good advice,wanted to try something different it should work well.

 

looks better than my first effort did. i'd make sure you provide some support to the turbo.

aaron

 

Looking good!!

 

It looks crazy and isn't equal length due to stupid motor mount right in the way. but it cost about the same as an eBay manifold "im $90 in to it its made from scrap"ill chalk it up as a success for the first time trying to make one of these.ill make another one when i put a bigger turbo on it.

 

how do you weld it up? break it in pieces and weld each runner?

 

yeah thats what we did its 90% tigged up now

 

Looking good