MKG's Custom Single Turbo Build

Boosted Performance

The problem with this build is that your MX5 friend picked a turbo that is much more suited for his 4 cylinder car than it is for your 3.7L V6...he probably has plans to buy it from you as a used unit when you find out it is too small.....

So, the first thing you should do is upgrade the turbo, or buy another one just like it, and build a TT kit.

I just did some testing (exhaust back pressure) with a Precision 6266 T4 1.15 a/r (much much larger turbine that what you have) and it is just right for the stock block. The EBP vs. boost was below the 2:1 ratio....just where you want to be on a turbo build. Even with this larger turbine, 10psi of boost was no problem by 3,500rpm.

You will exceed this by about 4,500rpm with that turbo, and the entire system will choke as a result.

Take this as some friendly advice which will save you a lot of work in the long run…having to rebuild the kit for a larger turbo down the road.

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MyKindaGuise

Lol didn't know you could judge a custom built turbo without knowing the specs or anything.

This is a modded S256 turbo. Its will work quite well with this car. And he didn't pick the turbo but good assumption

Also Precision's 6266 was a thought but I don't want to be part of any company that refuses to post technical data.

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|445whp398tq|
|BW S259 Turbo|3" Downpipe\Exhaust|ID1000|AeroMotive|Tial|EcuTek|BC BR|S0-4|MaffFab|
MKGs-Single-Turbo

Boosted Performance

Well, I can tell that it has a T3 turbie housing...that is more than I need to know . Even if the turbine wheel is 70mm (not possible) the turbine housing will still be a limitation. I am not trying to start anything BTW (or derail your build thread), just trying to give you some constructive advice from experience. The VQ37 revs high and has a very high VE, so a small housing like that will prevent you from reaching your goal.

Remember, the T3 framed turbo kits for the 350z's could never get past 500whp a few years back due to the same issue I am describing. Only when I introduced a true T4 frame turbos were customer able to get there. Many of my customer have built engines and are in the 650whp (pump gas) range with a 6266. Many though that this was not possible with a single turbo, and that there is no way to compete with the TT kits...so much for that

PTE 62mm turbo will flow 72lb/min of air, and the 67mm turbo will flow 93lbs/min. I know that there are not flow maps like with Garrett, but that is plenty of info. On top of that (as I mentioned) I did some testing and told you what turbine housing works best for this platform.

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750WHP starting @ $7,500 to the door
FOR DETAILS VISIT: http://www.the370z.com/members/boosted-performance.html
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IG @boostedperformanceyeg

MyKindaGuise

Honestly I do not care to break past the 500-550whp range and this turbo will get me there. Im not building a high HP drag strip car. It flows about 66lb/min right now as is. And BTS can build this turbo to have a T4 split scroll setup whenever I want so I am really not too worried.lol I thought about spending the extra cash at the time but really I am going to see how this does and if it comes down to it I will go t4 splitscroll.
I do appreciate the thoughts though. I understand you're not trying to be an ***.

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|445whp398tq|
|BW S259 Turbo|3" Downpipe\Exhaust|ID1000|AeroMotive|Tial|EcuTek|BC BR|S0-4|MaffFab|
MKGs-Single-Turbo

dmhenderson

Never mind

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MyKindaGuise

hahaha soooo many edits

__________________
|445whp398tq|
|BW S259 Turbo|3" Downpipe\Exhaust|ID1000|AeroMotive|Tial|EcuTek|BC BR|S0-4|MaffFab|
MKGs-Single-Turbo