600whp Turbo SOHC

[LT_Z]

Im looking for some advise. My block is fully built/forged, all ARP, Head is sunbelt full drag port worked. Im looking for high 500's -600 rwhp. Ive seen the t66 do nice things, and i was leaning toward a t67. But Ive read some stuff in here about gt35r and t78. Are these too big ? I am willing to deal with some lag but would like to boost by a sensible rpm. All info appreciated thanx in advance !

[TrunkMonkey]

I am willing to deal with some lag but would like to boost by a sensible rpm.

what do you consider sensible?

-demetrius

[LT_Z]

I dunno probly 4.5k-5k would be my limit unless there was no other choice. But Ive seen t66 550+rwhp boost way sooner so....

[xxtrizz]

is there a kit number for the ARP bolts and studs for the SOHC? or do you have to match the sizes?

[LT_Z]

No mine were custom from ARP but KA24DE.com still has the specs check the link to the left.

[hayato kazami]

yeah, that's what i am looking for! i think the GT3540 is a good one! the T78 would be a little too big!

[Nathan]

GT3540 would NEVER make it to 600whp, your going to need a BIG snail for that goal. A big snail with a shot of nitrous to spool it

[LT_Z]

You think t67 will do it ?

[Nathan]

Shoot, I dunno...ask me what turbo's can make 400 and I'll give you a hell of a nice list though

[02_silver_wagon]

This is what i got back from geoff when I asked him about their t3 stage 5/t67 turbo for someone.

Hey Bryan --

thanks for your interest in our products. Our t67 turbo actually uses thelatest revision of the older style t66. This turbo spools faster, pushesmore, coler air at equivalent boost levels and also costs less becuase it iscoming from garrett, not turbonetics. We do not have any compressor mapsonline but i can get them for you if need be. The most we have seen is 618whp at 28 psi on a 2 liter integra GSR motor that was built. At 21 psi itdid 536 whp. Also, on a 100% stock gsr motor at 5 psi we saw 287 whp and at11 psi we saw 354 whp. At 30 psi this turbo will have no problem at allmaking 550 whp.

The turbo starts to spool around 4200 and hits full boost by 4800. Howeverthis is not on a 2.4 liter motor, rather a 1.9L. A 2.4 will spool much muchsooner.

If you have any other questions feel free to give us a call at 480-830-1522.Thanks

-geoff

[deezlins]

Shoot, I dunno...ask me what turbo's can make 400 and I'll give you a hell of a nice list though

id like that list

[dareo]

i salute you for your efforts on the SOHC motor, and i cant wait to see your results. with your setup and a great cam and that T67 turbo i wouldnt be too surprised to see you break 600whp.

What are you going to manage this monster motor with?

[Pornflakes]

The T67 should make 600HP just fine. You'll probably be making boost around 3800~4000RPM.

And yes, http://www.ka24de.com does have ARP head and main studs for the KA24E (SOHC).

Also, what Dareo mentioned, how are you going to control the engine. This is one of the most important things to consider in order to make 600WHP. Without a good engine management system you could not get there. TEC3 comes highly recommended.

[WDRacing]

Why not a Decent daily turbo with a good spool and 150 shot of N2O on tap?? Real easy and not that expensive.

WD

[kettnerc]

I'm going GT35R and TEC3... will be in the 600's in the coming months.

[dareo]

Why not a Decent daily turbo with a good spool and 150 shot of N2O on tap?? Real easy and not that expensive.

WD

Two reasons that i see, #1 is they can have high power when they want it, and more non-boosted revs for daily in traffic drivability.

#2 bottles are for babies.

[spitz7985]

plus i've heard running nitrous at peak boost is not easy to contain.

[WDRacing]

More non boosted revs, what exactly does that mean?

Here's my daily driver plan, or one of them atleast. GT30 turbo, spools quick, has plenty of volume. Good for 20 psi of boost. More then enough to beat 90% of the cars driving on the street on any given Sunday. Then plumb in a 50-100 shot of N2O for those days at the track that you really wanna be quick.

With timing retard and the right fueling, N2O is no more dangerous or harmful then adding boost.

WD

[deezlins]

thats sounds like a really good setup you got planned, that would be real sweet :ylsuper

[cnichols]

I'm going GT35R and TEC3... will be in the 600's in the coming months.

Sounds like a nice setup, but how exactly do you plan on planting that power in an altima?

Also, will your transmission hold it and do you have an LSD?

[kettnerc]

Don't want to thread jack, but slicks, hardened axles, and if needed, hardened gearbox. And yes, I wouldn't have over 200hp if I didn't have LSD.

[LT_Z]

I ran N20 in my 300zx. I dont like the fact of having to detune for the n20 and not alot ofpeople really respect n20 power. Im really trying to keep this all turbo, plus i hate filling the bottle

02 Silver Wagon do those guys have a site ? and is that like a hybride t3/t67 ? can they do a t4/t67 ? just wondering , thanx I am wanting to buy the AIP manifold and I think its a t4 flange.

[Pornflakes]

With the TEC3, for example, you can tell it to activate Nitrous from a certain RPM to a certain RPM only (like start at 1500RPM and stop at 3000RPM) where the turbo takes over. This keeps Nitrous consumption to a minimum, and only where it's needed.

[LT_Z]

Yeah but its still has be de tuned, timing has to be retarded and fuel has to be accounted for either in more fuel if timing is retarded or race gas if timing is left alone, I just dont really like n20. I totally understand tho cause on my 300zx my turbo would spool instantly with n20 so maybe I could look into putting my old system on like a 50 shot or something. So do you think i should stick with the t67 or go a little bigger ?

[WDRacing]

N2O and Boost are the same thing!!!!!!!!!!!!! well not exactly but pretty damn close, both add air to the combustion chamber.

Nowadays, if you add 50-75 hp shot of N2O you don't need to detune anything, basically the same as boost. But if you go much past that you'll need to retard timing and add fuel, again the same thing as adding boost. I'm failing to see what the whole detune thing is. Its not a detune, its proper tuning. There are a ton of N2O kits available that allow you to run the the stock fuel and ignition maps until the N2O is actually activated, in which case it will retard timing and add fuel for you.

WD

[Pornflakes]

Whether you'll have to retard timing 1 degree at 2000RPM or not (you probably won't have to retard anything), I guarantee you that gaining 50HP at 2000RPM is not a detune. Detuning is when you have to change parameters to sacrifice power because of heating, detonation, or other issues that are forcing you to do so.

Regardless, I think a T67 will certainly do the job.

[LT_Z]

Yeah you are right its been so long since ive tried to squeeze anything less than a 100shot. But im really trying to stay all turbo on this one and mostly pump gas. I want to be able to stop at a highway light and press a button to get max boost and launch on someone granted i probly wont run 30+psi on the street but probly a good 25 and its just that I want to be able to say I have no n20. anyway thanx for the info ! you guys own

[Pornflakes]

That's another thing I like about the TEC3. It has a 2 stage rev limiter, that lets you launch at any specific RPM you set it to. Just flip a switch and floor the gas, and you'll sit at 3000RPM (or whatever you program it at) until you launch, where the second rev limiter will kick in at your maximum set limit (say 7000RPM). This will drastically improve your 1/4 mile and your 60ft times.