which turbo would be better GT3582R or FP3582RHTA?

[evane]

which turbo would be better GT3582R or FP3582RHTA?? FP says to have better spool and better low end torgue gains?

 

[cruisintalonawd]

Thats all up to you......what are your plans

 

[evane]

actually im just startin on a 2g project and i dont even have a car yet but i have a tublar manifold, 20g turbo, megan downpipe and tial 38mm wastegate and im buyin a laser rs turbo this weekend for the 6 bolt and then money i get from parting out the laser will go to project but later on im thinkin about one of those turbos or a FP Red...im lookin for around a 600 whp v8 killer

 

[Rob10_99]

The only problem with Straigh GT series is they are T3 or T4 flanged, while FP's made for dsm turbine housings are stainless and mitsu flanged, which kicks ass.

 

[evane]

yeah thats the main reason why i want a fp red is bc i already have a tublar manifold i could use but i dont know how much flow im sacraficing at higher rpms due to the smaller turbine housing

 

[JayRolla]

The only problem with Straigh GT series is they are T3 or T4 flanged, while FP's made for dsm turbine housings are stainless and mitsu flanged, which kicks ass.

Actually thats a good thing. The mitsu housing is a huge bottle neck and kills top end performance. The straight gt35r t3 hot side would be the best way to go. The fp you are thinking about getting is way overpriced for the little gain in low end and spool, but thats my opinion.

 

[evane]

yeah the only reason i considered the FP red was that i already had a manifold for it but the gt35r is probably what ill go with my buddy has a gt35r set up and its insane

 

[JayRolla]

I know people that run t67's to4e turbos and they are awesome. They dont have the great ball bearing setup but they are strong and push a lot of air. They also can be found from $800-$1000.

 

[evane]

yeah but what would spool up be on that?? that big of a turbo and not ball bearing you think spool up would suck

 

[Black95awd]

yeah but what would spool up be on that?? that big of a turbo and not ball bearing you think spool up would suck

build a high compression engine.

 

[evane]

what would be a good compression for a gt35r? if i wanted to run pump gas and maybe race gas?

 

[97eclipseNT]

the 3582rHTA from FP has a t3 hot side not an FP hotside. the 35 with the mitsu-flanged fp housing is the FP3575. the HTA has either the compressor or turbine wheel modified to help with spool up and its ability to hold boost.

 

[Zex4g63]

the 3582rHTA from FP has a t3 hot side not an FP hotside. the 35 with the mitsu-flanged fp housing is the FP3575. the HTA has either the compressor or turbine wheel modified to help with spool up and its ability to hold boost.

Wrong. The FP3575 is something larger. A FP3565 is the FP bolt on version.

 

[CTP]

Actually thats a good thing. The mitsu housing is a huge bottle neck and kills top end performance. The straight gt35r t3 hot side would be the best way to go. The fp you are thinking about getting is way overpriced for the little gain in low end and spool, but thats my opinion.

Glad to see someone mention that. MHI turbine housings are called compromised volutes for a reason.

 

[evane]

Glad to see someone mention that. MHI turbine housings are called compromised volutes for a reason.

what do you mean by a compromised volute?

 

[kahl23]

Glad to see someone mention that. MHI turbine housings are called compromised volutes for a reason.

Just for the record here, the FP turbine housing has nothing in common with any 7cm of 8cm Mitsu housing. It is a piece that FP designed themselves, the only thing "Mitsu" about it is the bolt pattern. While there has been much discussion on the difference between the FP housing and a comparable Garrett housing, I think the general consensus is that the FP housing greatly outflows a standard Mitsu housing, but maybe lacks quite as much flow as a comparable t3 housing. If you search, I'm sure you'll run across a bunch of threads on this.

 

[evane]

flow wise i probably end up going with a t3 style housing like the gt3582r...or would a twin scroll t4 style one help more?

 

[CTP]

what do you mean by a compromised volute?

If you could unroll a normal turbine housing it would look like funnel. If you unrolled an MHI turbine housing it would look like half a funnel. You can guess which one flows significantly better.

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[adam_coco_sk8r]

yeah i understand that but what if i got a t4 housing that was twin scroll would there be any advantage to that?

 

[CTP]

It depends what kind of power you plan on making and what you want to rev to. Twin scrolls are effectively smaller than singles, so bumping up a size to go twin scroll is necessary to get the same flow. I think a full T4 35R would be gross overkill unless you have a built head and plan on reving to the moon. People do 600++whp on T3's all the time.

 

[evane]

yeah thats what im looking for is 600 whp but if a twin scroll would help spool up and at the same time as the same flow capabilities as a t3 i would get a t4 twin scroll

 

[CTP]

Assuming you're going to select an A/R that will give you reasonable spool, then the only spool time you'll gain from the divided T4 is the spool time you lost by going bigger than a T3.

For 600hp I'd stick with an .82 T3. Given the fact that you're already worried about making it spool faster I can guarantee that if you go with a straight T4 you're going to be complaining about slow spool.

 

[Asimmons90GSX]

dude go with a mitsu housing. There is nothign wrong with it. Go on FP sight and read the article. Buschur tested it and showed the results. I think FP knows what the hell they are doing. They do, after all, supply John Shephard, world fastest awd dsm, with his turbo. It's a custom turbo but the FP turbo's are no joke. Go with the HTA. The results speak for themselves on FP sight.

And BTW t3 housings on mitshu cars spool SLOW AS HELL! Another reason to go with the mitsu flange turbo from FP. Even on a stroker motor they just take forever to spool.

 

[1992awdlaser]

dude go with a mitsu housing. There is nothign wrong with it. Go on FP sight and read the article. Buschur tested it and showed the results. I think FP knows what the hell they are doing. They do, after all, supply John Shephard, world fastest awd dsm, with his turbo. It's a custom turbo but the FP turbo's are no joke. Go with the HTA. The results speak for themselves on FP sight.

Do you know how much easier a t3 or t4 housing will make the 600whp he is looking for? Shep's turbo doesn't have a mits housing. You might not have meant that but that is what it sounds like.

 

[1992awdlaser]

And BTW t3 housings on mitshu cars spool SLOW AS HELL! Another reason to go with the mitsu flange turbo from FP. Even on a stroker motor they just take forever to spool.

Do you know this from experiance? I know for a fact a turbo with a t3 housing doesn't take much longer to spool than the same turbo with a bolt on housing. My friends 3082r made full boost at 4600 rpm. That is over 30 psi by 4600 rpm with a t3 housing on a 2.0l. My other friend's evo with a 2.3 spools a 35r running 38psi at 4300rpm. That doesn't sound like "slow as hell" to me. ANd you can't forget about the extra power the t3 housing is capable of over the bolton or the fact that there is less chance of knock with a t3 housing.