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Split Front/dump Pipes

thrtytwo

By thrtytwo,
in Western Australia

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thrtytwo Veteran

thrtytwo

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today i purchased a split front dump pipe from a fellow member and im VERY happy with the product, this post really has no relation to that, except for the fact that i showed my dad and he insisted he could make one with much higher quality welding. He has been a fitter/fabricator/welder and a very good one at that since he was 16, he has been the supervisor on many work sites and used to be in ship building. basically were thinking of making them and selling them at a cheaper price than what you find on the net. The best price i have found for a brand new stainless (not mild steel) mandrel bent 3" split front/dump pipe was $480. I havnt checked about getting them made locally but i will do more research before giong ahead with anything. We would probably sell them for around $400 maybe slightly less depending on time and effort + costs required in making the items. He said he would buy a welder for home and make a jig to do this if there was enough interest. To start off with they would only be for RB20 and RB25 (not NEO) R32, R33 and Stagea. Simply because we only have the one i bought to create a template from.

Basically i just want to know if there would be much interest in a quality hand made item selling for much less than reputable places. we would of course allow anyone to see the product before they bought it and possibly do some dyno testing. also if anyone knows where they can be bought for less please let me know as we want to be as competetive as possible !

I'm hoping this might go ahead as this could be the kick start into my own business which is pretty much my dream :D

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https://www.sau.com.au/forums/topic/139768-split-frontdump-pipes/
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mitchy_ Grand Master

mitchy_

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where does the wastegate rejoin into the dump/front pipe?

ive learnt that with a dump/front pipe all in one, its best if the wastegate joins as far down the pipe as possible.. generally it joins in just before the bend for best results. :D

SysLink67 Experienced

SysLink67

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Second that, I'm up for testing the dump on my R32 GTR.

I'm also in the process of making quaity 316 stainless steel ex manifolds for GTR's. Better made and improved upon the tomei equivilent. I had a a engineering shop with CNC equip and I designed mine on cad first and use tig. So im in same boat as you. But I will also be testing my product with backup evident in the way of dyno readouts using stock, tomei then my design.

thrtytwo Veteran

thrtytwo

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Second that, I'm up for testing the dump on my R32 GTR.

I'm also in the process of making quaity 316 stainless steel ex manifolds for GTR's. Better made and improved upon the tomei equivilent. I had a a engineering shop with CNC equip and I designed mine on cad first and use tig. So im in same boat as you. But I will also be testing my product with backup evident in the way of dyno readouts using stock, tomei then my design.

RB26 is different though right ?

to start off with we'd only be doing RB20/25 :(

thrtytwo Veteran

thrtytwo

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would u be making non split ones? (bellmouth) and in mild steel as well?

no as were only interested in doing high quality goods, and these will be at the price of mild steel ones (split i mean) found on the net anyways.

bell mouth mild steel

there ya go :(

eBay has LOADS of them, dirt cheap. China's finest :P

i looked on ebay and couldnt find split stainless ones, were you reffering to the above mentioned mild bell mouths ?

also my experiences with china goods are that while they serve the purpose they arent of a particularly high quality, welding is usually what lets them down, and while it doesnt sound a big deal i can effect air flow inside the pipes.

thrtytwo Veteran

thrtytwo

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are the R34 neo ones different...

i didnt think they were?

to be honest im not sure, i cant see why they would be, but i dont know the difference between neo or not, the reason i specified that was because i was told that about the one i bought. if someone could clear that up i would appreciate it :mad:

thrtytwo Veteran

thrtytwo

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using a split front/dump pipe over a stock item could pot you up to 30kw ive been told depending on your other mods. if you alre4ady have a cat back and a pod probably less, but with less pressue i would think the throttle would be more responsive and the turbo would spool up a bit quicker, as for being louder im not 100% sure. maybe someone could help out with that ? :)

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