rominl

iTrader: (4)

hahahaha man, jon, you telling me you are going back to the "original" plan now?

lex400pshR

I have already tried to do this setup. i've spoken to STS turbo.com and I actually have a T04-62:1Hifi turbo (brand New) all the necessary parts and electronics, i was dead set to making this work, but when I actually went to the shop to do it we found out that it will not work on the Gs4.

Not enough room, Where U see the Camero's with the turbo right under the trunk, That is not 4 me.

Where the 2 downpipes come down, There is not enough room, Maybe for a super small as turbo but not a T04.

Plus because of compression ratio 10:5:1, U can only run 4-5psi MAX boost on pump gas.
If U look at their Chart on compression U will see this....

If U got any info on this..... Let me know, because it is the cheapest route I see...

LexT

(a T4/62 is F%$# huge) How about a Stock TD05-14B from 1 gen eclipse, can boost upto 18psi efficiently - no hot air, cheaply available with an internal wastegate, can use the BLITZ boost controller which controls boost gear based, Rpm based, and tune the fuel with afc.. How does the STS oil supply kit work, Can it be purchased seperately? - they just didnt want to sell me the oil kit seperately.
What I like about the turboVSsupercharger is the control of boost in our case run less in 1st gear so we dont hit the rev limiter and tuning is definetly better - Somebody try this out that has more knowledge than me.
thanx

JBrady

Well, there is a difference in working and practicality... it may or may not be practical but it will definitely work. Now, maximum boost is probably in the neighborhood of 8psi with good intercooling.

Yes, I know that STS says no intercooler is needed because of the pipe length... while there is some heat drop with the longer pipe an additional intercooler would still take out some heat and that will give higher max boost tolerance.

A big difference between centrifugal superchargers (vortex, paxton, powerdyne) and turbocharging is that turbocharging can reach peak boost at the engines torque peak. This is the most sensitive RPM range for detonation because torque peak is also cylinder pressure peak and that is when detonation is most likely. So, you may need to run a fuzzy logic boost controller that pulls out a little boost at torque peak and then puts it back at higher rpm in order to run similar peak boost as a centrifugal supercharger... even so the turbo will make more power under the curve and therefore be faster.

Now, when it comes to packaging you may need to run two smaller turbos for maximum ground clearance. There is no other advantage to two small turbos vs one larger turbo.

Of course you could install the turbo where XS Engineering does... right after the manifold... and remove the factory catalysts. You can re-install a catalyst after the turbo but without certifying that configuration you will not have emissions legality (this applies to any turbosystem with or without the factory catalysts and other emissions components).

JBrady

Here is a picture of the first XS Engineering low mount single turbo SC430 using a Garrett twin ball bearing GT3540 turbo.

https://www.clublexus.com/forums/sho...ighlight=turbo

lex400pshR

How much? this is not the 20K kit someone was talking about right?

LexT

Anyone know of anybody that has tried the Lextreme supercharger bracket? - its for a LS400 but should fit the GS, relocating the fuse box is required.

JBrady

My guess is in the $5k-$6k range. Try contacting XS-Engineering if you are interested.
http://www.xs-engineering.com/

LexT, I do not think Lextreme's bracket would fit a GS but the supercharger from Planet Soarer may work... possibly requiring a hood bulge.

NoRyceGS4

XS Engineering is NOT cheap. Especially if you have them do the install. But their work well qualifies what you pay.

LexT

Just curious Jbrady, why would'nt the lexetreme bracket not fit? Happy New Year everyone.

Gs L-tune

I'm not gonna do turbo for my GS4 anymore. I just picked up a 87 Turbo supra for pretty daym cheap. So I'm gonna mess around with it for awhile and find a cheap 2jz motor to do the swap. That way i can keep my GS in the garage during the winter and mess around with my turbo supra. How is that sound?
1987 Turbo Supra for $1000
1993 N/A Supra wheel for free from my friend.
Next HKS BOV, Front mount Intercooler, Turbo timer, Custom cat back,Suspension, and new paint job. I guess all the money i'm saving up for my GS wheels gonna be on this new supra.