I have a garret 50 trim turbo with the ford 5 bolt outlet on my s2000. I want to buy a bigger turbo a gtx3576r. Should I buy a 5 bolt hot side so I don't need to make a new down pipe. Or should I buy a gt 3 inch vband turbine housing? If I did that I would have a new downpipe made. I hear the gt 3 inch v band housing flows better and will make more power. Also shoul I get a .63 or .82 hot side?

 

Housing size depends upon purpose of the car and setup. Using a 5 bolt hotside is always of a pain by design, but won't necessarily be an obstruction of the power you're trying to have.

 

a 50 trim shouldnt need more than a .63 housing IMO and stick with the 5 bolt. although a little more difficult to connect its not going to hurt performance any

 

Please listen to my question.

I currently have a turbo s2000 with a ball bearing garrett 50 trim turbo with a .63ar 5 bolt hotside.

I want to make more power so I'm going to buy a gtx3576R. If I buy a 5 bolt hot side for the gtx3576r turbo I do not need to mod the downpipe.

The other option is to get the turbo with a gt 3 inch outlet vband housing, If I did this I would have to mod my down pipe or make a new one.

Now, will a gt 3 inch vband .82 hot side performe better than a .82ar ford 5 bolt hot side?


Here is a pic of my setup cuz everyone love pics

 

Sorry my bad read that half asleep. Well I've never heard of a gtx3576r. Are you referring to the gtx3076r or the gtx3582r ? In any even the two .82 housings will perform the same the outlet wont change anything. Even the GT 3" outlet starts at 2.5" and tappers to 3" at the band. the 5 bolt its just straight up 2.5" so no flow difference between the two and saves you money trying to change or mod the DP

 

http://www.atpturbo.com/mm5/merchant...egory_Code=GTX

http://www.enginebasics.com/Advanced...0GTX3576R.html

The gtx3576 just came out not to long ago. It uses the gt35 turbine wheel with the 76mm gtx3076r compressour wheel. The gtx3576r falls between the gtx3076r and the gt3582r.

The reason I ask my above question is because I hear give the same exact ar of the turbine housing a gt 3" vand will make more power than a 5bolt housing.

 

I understood your question from the start. But please understand my response.

The GT-R series turbines are VERY efficient, and would work best with at least a GT T3 housing with v-band due to its conical design i the volute.
GT 3" V-band with conical outlet


Standard T3 Ford style 5 bolt - VERY inefficient, but still functional


But that doesn't mean that it still wouldn't work in the Ford style 5 bolt housing. Does that mean you'll lose power? no, but it may take a little bit more pressure to compensate for the change in exhaust energy.

My opinion? Man-up.. if you're going to expand that system on an F20C, do it properly, but getting a much more efficient turbine housing to work with the better turbo and don't be lazy about some flange. Its part of the modification world.

Change the flange, and use the .63A/R housing for the GTX3576R. Trust me

 

like shodan said, the 3" v-band would technically perform better. but does the small increase in performance justify the extra work/cost to mod the downpipe? i say no, drop in the 5-bolt and turn the boost up

 

or get the 3" v-band housing and just get a bolt on 5bolt to vband adapter....
why complicate ****

 

That makes no sense. I would have to buy or make a vband to ford 5 bolt adaptor and I would also have to mod or make a new downpipe because it would stick out so much further.

 

If the turbo sits in roughly the same position as the current one, couldnt the current downpipe be modified to accept the v-band outlet (i.e. cut the flange off and maybe trim back the pipe a little, then re-weld the v-band flange). I dont think you'll need an entirely new dp, from how i picture it .

 

it makes perfect sense.... people sell 5 bolt to vband adapters for this reason....

 

^^The problem is that the adapter adds length to the downpipe. To accomodate a straight bolt-up adapter, the turbo would have to move forward or the downpipe rearward.

 

riceball you sell the other turbo if so ill probably buy it off you when you decide to sell it. im looking for a 50 trim with .63 hotside
let me know