Topmount opinions

[Wrxrick]

Besides a T3 manifold and downpipe extension (what kind of downpipe?) what else is needed for a top mounted turbo? It seems as though in everything I've read, people complain about how much it costs to run with a topmount. But the power gains are incredible. Am I missing something? I'm sure it's worth it in the end..

Patrick

[Fireplug]

Besides a T3 manifold and downpipe extension (what kind of downpipe?) what else is needed for a top mounted turbo? It seems as though in everything I've read, people complain about how much it costs to run with a topmount. But the power gains are incredible. Am I missing something? I'm sure it's worth it in the end..

Patrick

The downpipe depends on the company that makes it. I had a custom topmount manifold made, so my 3.5" downpipe eliminates the cat and/or "highflow cat" area. Topmounts aren't cheap, thats for sure but they give you the room needed when running a large frame turbo. Clearance issues come into effect when running big turbos on bottom mount manifolds.

[Wrxrick]

Thanks for the quick response,you say it's expensive "no doubt." But if it's only the manifold, downpipe, and turbo itself, what is so costly?

[Blown240sx]

Im going to have my full setup for sale in a couple months if your interested.

Redtop SR20DET Setup

Equal Length Manifold (full race) w/ t3/t4 flange $1000Tial 38mm wastegate w/ additional valve ring $25038mm dump tube $15One Piece J pipe/Down Pipe $250Garret T3/T04S .70 cold side .48 hot side w/ stage 3 wheel, Dual BB center cartriged, Ported, and Clipped. Its the Equivalent of a GT35R from HKS just better Flows 70 lb/min $1300Catback N1 w/ welded in Cat-Delete $250555cc injectors $250Power FC already tuned for 15 psi $1100Z32 MAF w/ plug $200All fittings $20Steel braided line with block fitting $50

My Price $4685 Your Price $2800

you wont find it cheaper

Also There are no clearance issues. It doesnt even really come close to the Branke Master but I put a heat shield on it anyway.

Once last thing Ill throw in my Turbo Blanket (its a bit torn up from an exhuast leak but still works great)

[otterman]

Im going to have my full setup for sale in a couple months if your interested.

Redtop SR20DET Setup

Equal Length Manifold (full race) w/ t3/t4 flangeTial 38mm wastegate w/ additional valve ring38mm dump tubeOne Piece J pipe/Down PipeGarret T3/T04S .70 cold side .48 hot side w/ stage 3 wheel, Dual BB center cartriged, Ported, and Clipped. Its the Equivalent of a GT35R from HKS just better Flows 70 lb/min Catback N1 w/ welded in Cat-Delete555cc injectorsPower FC already tuned for 15 psiZ32 MAF w/ plugAll fittingsSteel braided line with block fitting

$3000

you wont find it cheaper

Only 555cc injectors with that set up?

[Blown240sx]

Only 555cc injectors with that set up?

Yea I bought the injectors before I looked at the max HP they could hold... It was my fault but the car puts down 300 whp quiet easily and the injectors still have some range. This is all on a stock block (completely stock)

[Wrxrick]

I appreciate your generosity! I, however, am currently looking into this new idea of mine, that is going top mount turbo. I want about 450whp. But I'm really concerned for the stock block (besides head gasket and cams). I'm assuming people go forged pistons for higher boost levels?

I would definitely take up on your offer, but I don't have the money currently. Heck, I don't even have the SR20 motor yet. I just like to plan early.Thanks again,

Patrick

[DrifterProdigy85]

Go 3071R Twin Scroll. Makes awesome power. Full Race has a thread about it on Fresh Alloy. They did the setup on Ross Petty's S13. Made 465whp 380tq @ 20psi with HKS 264 Step 1 Cams and Greddy Intake Manifold. Using larger cams will make for more power. I think 500+whp is easily attainable with more boost.

[Wrxrick]

I looked into it, and I think I may just go with a GT2871r with a .82ar.

I want to be fast, but don't want to spend a ton of money (yet) providing power in the upper rpm range. Is there a noticeable power difference between going with the .63 and .82 GT2871r? Meaning is it worth the lag?

[otterman]

Also theres plenty of SR's in the 500hp range still on stock block

[goj_cloud]

Im going to have my full setup for sale in a couple months if your interested.

Redtop SR20DET Setup

Equal Length Manifold (full race) w/ t3/t4 flange $1000Tial 38mm wastegate w/ additional valve ring $25038mm dump tube $15One Piece J pipe/Down Pipe $250Garret T3/T04S .70 cold side .48 hot side w/ stage 3 wheel, Dual BB center cartriged, Ported, and Clipped. Its the Equivalent of a GT35R from HKS just better Flows 70 lb/min $1300Catback N1 w/ welded in Cat-Delete $250555cc injectors $250Power FC already tuned for 15 psi $1100Z32 MAF w/ plug $200All fittings $20Steel braided line with block fitting $50

My Price $4685 Your Price $2800

you wont find it cheaper

Also There are no clearance issues. It doesnt even really come close to the Branke Master but I put a heat shield on it anyway.

Once last thing Ill throw in my Turbo Blanket (its a bit torn up from an exhuast leak but still works great)

why would u need a maf if u have a power fc?

[DrifterProdigy85]

Theres 2 kinds of PFC. PFC L Jetro which uses the MAF or PFC D Jetro which converts to MAP.

[DrifterProdigy85]

I looked into it, and I think I may just go with a GT2871r with a .82ar.

I want to be fast, but don't want to spend a ton of money (yet) providing power in the upper rpm range. Is there a noticeable power difference between going with the .63 and .82 GT2871r? Meaning is it worth the lag?

Its about 25-50whp difference. Id personally go with the GT3071R .63 at least for a top mount setup. Im not talking Twin Scroll, just normal T3 .63 Turbine Housing. Youll have 20psi before 4200rpm and make 430whp at that. For the same price as GT2871R you mind as well go something a tad bigger with similar spool and more power.

[DrifterProdigy85]

Personally ill be getting a Hybridynamics Kit when i decide to go Top Mount. Costs $3000, everything custom made and comes with just about everything.

[Blown240sx]

Power FC still uses MAF

Also to the starter of the thread Im on stock block with no problems and my setup is topmount setup.

Also I think I am cutting a great deal or is it over priced? I mean upgrade injectors, internals, and tune and my setup could put you up to +600 hp.

I think of it this way if Im going to upgrade might as well go big so if you decide you want more power later the space is there too do so. The only place I faulted in this was the 555cc injectors.

[Wrxrick]

WOW!!!!!!!! I just checked out their website and what an awesome deal! Only thing needed that's not included is a downpipe extension.

http://shop.hybridynamics.com/...D=233

[Blown240sx]

That is a very nice kit. It could be made for cheaper but that is a VERY nice kit. Only problem is it is missing Injectors and Tune That will be another 1000

[Wrxrick]

Haha...tune.



JUST KIDDING

[DrifterProdigy85]

WOW!!!!!!!! I just checked out their website and what an awesome deal! Only thing needed that's not included is a downpipe extension.

http://shop.hybridynamics.com/...D=233

Downpipe Extension? The kit has everything for exhaust to bolt up. You can see the 4 bolt Elbow that comes off the turbo which goes to the Downpipe connecting by V Band and then it goes to your CAT/Test Pipe from there. The only thing the kit doesnt have is IC and Intake pipe which needs to be custom since everybodys car is different. Id check if gaskets are included since there not really listed.

[Wrxrick]

damn.