Ultimac

What would need to be done to our engine to allow a turbo mod. For daily driver use, not drag strip-racer that has to be trailered around everywhere. I have heard rumors of their being a turbo cl-s in my city , not sure though.

Ultimac

i am not talking about the obvious like a wastegate/intercooler,tranny upgrade, that stuff, i am talking about reinforcements to the engine as well as fuel system obviously a pump/rail/pressure regulator

Zapata

You'd have to lower the compression ratio and increase the displacement. I belive that rick case was working on a 4.1L TT CLS. That's a lot of engine work because you're going from
3.2--->4.1. Add a VTEC controller or the new ECU from AEM and a FPR. Tooooooo much freaking money. Just go and buy an s4 hehe

Ultimac

See zap, the thing is I have heard of this company in Cali that will build you a turbo that is for your engine after they have recieved all the specs for it and all parts are warrantied for 1 year. The kicker 250 hp out of box turbo.

Zapata

oh i don't doubt it but what you have to be worried about with an engine that has a 10.5 compression is pre-detonation. A turbo may cause problems.

MCHM3

about 11,000

TheModMole

A few things that would be problematic......

1) Compression Ratio - Too high for anything over 6lbs of boost
2) Aluminum .. Aluminum..Aluminum - If we had a cast or steel block we would be able to think about some silly boost
3) Transmission - Not even gonna waste my time .. we all know why...
4) Fuel delivery...
5) Computer/ECU - Hiding boost to MAP/ Fuel Trim/Timing Advance and Retard

Anything is possible if you have the coin to give up on the project but realistically you wont get any longevity from the car for the money you pay... expensive and painful ....

A light pressure turbo a-la the Volvo variety on the front cylinder bank though would give a nice 20HP and 20lbs w/o excessive strain...

CL SLeePeR

What could be done to improve the block so that it could handle more power? If even possible?

TheModMole

That get really hairy ..... The head gaskets could be swapped for thicker ones to decrease compression.... The cylinder sleeves could be removed and and the cylinders over-bored to allow for a ceramic or thicker sleeve, wich would lead to coolant temp probs... the heat on the tranny would require a correctly matched cooler.... it begins to get very very complicated very quickly

Nashua_Night_Hawk

Just trade your CLS for next S4, you are all set....

Ultimac

I wasn't really looking for my car I just thought it was interesting. Compression would be a serious issue, not to mention all the other mods needed just to harness the power. Like a thicker axle...and even then definitely not a daily driver.

Ultimac

I love my car ,but I've just about done all the mods I plan to minus the RES (miracle willing), and maybe a few cosmetic things. I plan on getting a bike in the summer to feed my need 4 speed.

Closer

That's all over kill. All you need is a fuel pump, maybe injectors
and electronics you can "get away" with running a 4 psi system
which might fetch you some 50 horse.

TheModMole

4 psi will not yield 50 ponies.... maybe 15 -20 MAX ... Thats why i suggested a Volvo like low pressure turbo on a single manifold....

Closer

blah too slow to edit. =(

KCPreki11

Depends what kind of turbo it is.

Ultimac there is a guy in CA that was getting a turbo on his CLS, of course full custom. He was in super street.

JRock

The biggest reason not to bother is the fact that our car is front wheel drive, along with our shitty transmission.

The 6-speed solves part of that problem, but since we're FWD we really can't put down the power like a RWD car can. You got the wrong car if you want to turbo.

JRock

In general 6-8 PSI will yield around 40hp. Look at cars currently on the market that offer regular and sc/turbo editions. The Grand Prix GTP for example.

GT:200/225
GTP:240/280

The stock boost on their sc is around 6-8psi, IIRC.

4psi is about as useful as having a monkey sit under your hood and exhale into your intake. It's really not worth the money of all the work necessary to install a turbo on our car if you're only going to be able to run less than 8psi. And if you want to run more than that, expect the tranny to break and to not be able to get all of the power to the ground like you'd want to.

IOW, a relatively pointless mod.

TheModMole

Like I said.... unless you push at least 6 psi.. not worth the even remotely worth the headache........

4pumpedCL

I'd do it all just for the sound of a blowoff valve....who cares about performance gains.

ABlueCL-S

or..you can probably get a used 92ish NSX with a supercharger kit for an extra $10k

ElegantTL-S

I would do the exact same thing! HEHEH! now..this is more of a worthwhile mod....

oonowindoo

___________________
that s what i have been thinking after i drove my friend's 98 Supra TT but it s an automatic . i love the blow off valve sound!!!!!!!!!!!! FUCK...

ABlueCL-S

I'm trying to figure out if the Fostgate Equip you have is actually Rockford Fosgate or is this another manufacturer? Euro spelling or import?
j/c..

I went to the "http://www.rockfordcorp.com/2002home/" to try to find the stuff you mentioned, and they carry it but it's spelled a little different...Is this the same stuff?

STeve

JRock

I think he skipped the English Grammar and Spelling class with Nashua.

DtEW

Your poison, served.

http://www.night-pager.com/parts/eng...woff_valve.htm

If you can't read Japanese, Babelfish can translate it for you here:

http://babel.altavista.com/?urltext=...e.htm&lp=ja_en

Just hit the "Translate" button.

Basically, it's an electronic blow-off valve sound synthesizer for naturally-aspirated cars. The processor reads the signal from your airflow meter to know when to set off the realistic reproduction of the blow-off "whoosh". The sound is also customizeable through ROM changes.

Yes, this is rice at its worst.

Yes, I will laugh at you.

scalbert

You can't really use these numbers since the GTP has a reduced CR than the GT. With the same CR, that 40 HP difference would turn into about 65 - 70.

To determine the boost needed you can simply determine the increase percentage. Say we want a 75 HP increase in power:

(260 + 75) / 260 = 1.28, we'll just say 1.3.:

0.3 * 14.7 = 4.41 PSI provided you have proper intercooling so even with losses increasing this to 5 PSI can and would net you about 75 HP.

Referer to Chapter 17 of Maximum Boost by Corky Bell. Here they are defining and inplementing a system for an NSX. They want 100 HP gain with a base of 275. This requires 5.2 PSI in calculations.

Once done and tested they gained 122 HP on 6 PSI boost, but they did use Aerocharger units with some highly efficient IC's running in the neighborhood of 90% efficiency.

Remember, when you have a higher CR to start with it doen't take much boost to gain power. But at the same time it doesn't take much boost to start knocking either. You need plenty of fuel and excellent intercooling.

nt5k

my thoughts exactly.. but i guess its ok if you like being the butt of everyones jokes.. but i think u need to add those windshield washer lights too then.. cant rice it up halfway you know..