jmicaelk

iTrader: (19)

I agree with the tires, but won't count that in here as I don't need the tires to make 500rwhp, but should have it to be able to use them
What is the cost for clutch and Uprev ??
HR head studs should hold 500hp

ttg35fort

iTrader: (2)

If you go with a single turbo, which probably will be the most cost effective, you will need at least a GT35 or equivalent turbo.

ttg35fort

iTrader: (2)

Yes, the HR head studs and head gaskets should hold 500 hp.

Clutch will be north of $1k. You might be able to find a used exhaust system, but that will likely run $700 or more. Injectors, probably at least 600 cc. I'm guessing even a used set will run at least $600, but I have not looked into this lately.

Check Uprev's site for the current pricing.

If you can do your own welding and fab your own turbo piping, that will certainly help.

ttg35fort

iTrader: (2)

Thanks. I made it through the end of the year crunch, and now I finally have a breather.

streetzlegend

iTrader: (2)

Just for reference for the OP, for an equivalent or similar flowing turbo and not spend $1k+, look into the Holset HX40 (6 blade compressor wheel) they go anywhere from $150-400 used, very very reliable turbo.

jmicaelk

iTrader: (19)

I have some APS manifolds, so I'm thinking twins for this, any suggestion for turbo there ??

ttg35fort

iTrader: (2)

I looked up the Holset HX40. I don't know anything about that particular turbo, but according to the following link, it is good to 350 hp on a 7-10 L motor. My gut instinct is that the trim values will not be well optimized for a 3.5L motor.

http://www.holset.co.uk/mainsite/fil...set%20HX40.php

If anyone has dyno numbers using this turbo on a 3.5L motor, please post them.

streetzlegend

iTrader: (2)

Rmember thats HP, those trucks put out enormous amounts of torque and only reving max 2500rpm, DSM guys have been using them for a long time with much success, I have been using it for a while as well as the smaller hx35 version, there are guys even with less displacement than 3.5L in the 600hp range with the hx40 turbo, I made 380whp at 10psi on my vq35de(hx40, auto, 8.8:1 compression and no VCT). We also dyno'ed another vq35de with the hx35 at 10psi (stock compression and no VCT) and put out about 375 or so.

a quick fact about the hx40: "60mm compressor inducer. This compressor flows around 69lb/min"

ttg35fort

iTrader: (2)

The actual boost level that you need will vary depending on your supporting mods, but figure at least 12 psi (.83 bar) of boost, which is a 1.83 pressure ratio. With stock cams, this likely will be higher. You need to flow about 28.5 lb/min. out of each turbo. I would go with GT28 or equivalent turbos.

ttg35fort

iTrader: (2)

If it took 10 psi to get to 380 whp, the air intake temp (AIT) is a little high, meaning that the turbo is not running very efficient. This is likely due to the trim value being selected for the larger motor.

Nonetheless, considering the cost you indicated, it seems like a reasonable option for a low cost build. I think a fairly large intercooler and/or water/meth injection would be very helpful to try to get to 500 whp. Remember, high AIT's make the motor more prone to detonation.

streetzlegend

iTrader: (2)

May I ask, how do you conclude that there are high IAT with only HP and psi as given?
Notice I put no VCT, I have VQ30 timing sprockets/chains, lower compression than stock, automatic.

jmicaelk

iTrader: (19)

I hope I can pair them up with some $400 GodSpeed 18G turbos for $400 each, so then I have this list

APS manifolds $500
Turbo's $800
600cc injectors $300

More to come

ttg35fort

iTrader: (2)

You should be able to get to 380 whp with around 6.5 psi of boost or so, give or take 1 or 2 psi, for a relatively efficient setup. As the AIT increases, the air expands, so it takes more boost to cram the same amount of air into the cylinders.

For reference, with my Greddy kit I made 550+ whp at 13.5 psi on a Mustang dyno. Below is the dyno plot. A couple of notes: it weather corrected up to 584 whp. The boost controller was set at 14 psi, but actual boost measured 13.5. Of course, I had supporting mods.

ttg35fort

iTrader: (2)

Those are very good prices. You might be able to make your goal.

Make sure the turbos will mate to the manifolds. I am not familiar with GodSpeed turbos, but Greddy 18G turbos won't mate to APS manifolds.

jmicaelk

iTrader: (19)

Ok I better look into some t28's then

jmicaelk

iTrader: (19)

I will contact GodSpeed and get the measurements and see if they work, they use them on SR20's

ttg35fort

iTrader: (2)

Streetzlegend, your post about the Holset turbos just made me realize something. I've been wanting to investigate a compound turbo setup, but the trim values of Garrett turbos are not well optimized for that. The Holset turbos might be....

ttg35fort

iTrader: (2)

I think I have a Clutchmasters twin disk clutch that needs new clutch plates. I could give you a good deal on it if it is still lying around. If you are interested, I'll check with Japtrix to see if they still have it at the shop.

I fried the clutchplates launching hard at 15.5 psi of boost. I replaced it with an Carbonetics tripple disk.

jmicaelk

iTrader: (19)

Might be interested at the right cost see I need more deals like this

streetzlegend

iTrader: (2)

Actually I might have mentioned something about these turbos on your compound setup thread(or at least thought about it). There are many variations of these turbos, hx30, hx35, hy35, hx40, hx50, hx52, etc.., look into them, they are great man. anyway lets not fill the OP's thread with offtopic stuff lol