opinion on upgrades

[Infinite]

OK, ive decided its time to throw some cash at my project, im going to buy a linkplus G2 ecu, 800cc injecters, allready have 3" mandrell bent exhaust, will upgrade the fuel pump to a 1000hp pump, also will be looking at a T70 compressor a/r of 0.7 and a 60mm inducer with a 82.5mm exducer. The exhaust side is 0.84a/r. also replacing downpipe/exhaust manifold. what else should i be doing at the same time?, The car dynod to 201hp with just exhaust done. also will be doing the intake at the same time, also puting a fmic in 400x250x80 with 2.0"?? pipes. what sort of power do u think this would produce?????.

[sergei]

with that humangous turbo it will not last long on stock internals and will be undrivable. Have you done something to the engine to support that turbo?

[Akane]

So, your car is a Curren, I'm going to hazard a guess at that it's FWD.

If it's a street driven FWD, I would be aiming for a lower power output, anything more is just spinning up the wheels, unless that's what you fancy.

A smaller geniune Garrett turbo will be a good start, ofcourse I'll recommend a GT28RS for it's response, if you do want to go a bit higher, you can look into GT30 options.

If you're just hovering 350hp mark, you can get away without doing internals.

ECU - no experience with the Link, cannot comment, but I'm not having any issues with a PowerFC, and it's got a nice commander to see what's going.

injectors, depending on power output, 550cc injectors can be maxed out approx 350hp~ish, and it idles just like stock. Which a Gen 3 already has, no problems there.

FMIC, just what you can fit really, a trademe jobbie is fine, but in saying that, the HKS items do have way better end tanks.

I'd just slap on a GT28RS, chuck in an ECU, get it tuned and have 300wheel hp all day long without missing a beat, you'll be able to spin all of 1st, 2nd, and some of 3rd on "OK" tyres.

[Infinite]

the aim is to produce power. basicly im doing everything external to give me what i need for when i have the internals not going to use the car untill the internals are done. But i dont want todo upgrades later on the aim at the end of the day when its had the money spent on it is 600hp at the flywheel or there abouts. dont need to be told how much this is going to cost ect ect as i dont realy care.

[Phothog]

For a street driven car a GT28RS would be the way to go, (im contplating making a "kit" for my MR2)

but if you want to go down the 600HP route later in its life, the turbos to go for would be like a GT3582R
(GT3540R) with a .82 housing or a T04Z with a .7 turbine housing.



This is what you are looking for a GT3582R kit that bolts on to the 3sgte (this one is a gen2 kit).

i would personaly stay way from the cheaper turbos (not just because i sell geuine Garrett, Mitsubishi, IHI, Borgwarnger, & Holset turbos but becasue of what i have seen of them failing & how many enquries we have for parts for them). i'll pull some facts & figures on monday about how much R&D goes in to developing a turbo,

i thing i do know (off the top of my head) Holset have a test bench in which they perform a containment test, they spin the turbo as fast as it can go before it explodes, and the compressor & turbine wheel must stay with in the covers, they tested one of there H2 series turbos they spun it to over 400,000rpm...!!!

hey then tryed a cheaper one (made to replace a holset model) it managed to destroy the test bench. and didnt make it near 250,000rpm.

i'll dig those facts out & post them up...

Chris.

[flygt4]

if you just go putting the biggest of everything in, you'll end up wasting as much money as if you put smaller stuff in to begin and had to upgrade later. pick a target, research what you need to get it, and build to suit.
a 1000hp fuel pump is stupidly expensive, its cheaper and smarter to buy 2x 500hp pumps.

oh and also, being front wheel drive, id make grip a high priority. budget to buy a good LSD. you wont be able to exit any corners in 2nd gear, and you probly won't be able to accelerate hard in 3rd if you don't.
sounds like fun , but from experience it isnt, its just annoying. with only 170dd kw at the track and with an lsd, i was having issues with grip in 2nd gear all day.

for once akane had the most sensible suggestion make 300whp and drive it all day long. if you really wanted a 600hp car, then you would have got a supra or skyline to start with

[Infinite]

um i dont want a supra or skyline they are ugly as sin and i dont care about the price of anything

[Malcolm]

if you really want opinions:

mine is that you're dreaming/wanting to do this to impress people. If you were doing it for your own personal enjoyment you would be taking the suggestions that have already been presented on board, in regards to drivability and purchasing stuff sensibly. To me it seems like you're falling into the typical young male trap of wanting to do all this so you can brag about how awesomely powerful your car is.

I remember a few years back we had someone in almost exactly the same situation, he had a st182 GT-R he had put a 3sgte into, and was talking about how he wanted to make it faster by throwing an unlimited amount of money into the engine. I suggested he should first invest a lot into giving it traction, since that was going to be his big issue. To cut a lot story short, he didn't like the idea and went and spent on a link, bigger turbo, intercooler etc and ended up going slower at the drags due to lack of grip.

If you think logically/sensibly for a minute you might realise that there is no reason to build your car to have 600hp, other than to impress your mates. If you seriously want to do that then you should be doing research based on what others have done, especially on mr2s. I don't think you'll make 600hp with 2" intercooler piping.

Since you have unlimited cash, why not try Akane's suggestion? If it doesn't satisfy you, and if driving a 300whp fwd still makes you want double the power, then you can sell the turbo and continue with your other ideas, or if you really want some wank factor then keep the gt28 and use it as a primary turbo on a sequential twin set up to spool your t7million or whatever cruise-liner turbo you want.

[Infinite]

if your wank factor had actuley payed any attention to any of the post about my curren u would know im runing a lsd box and the box has been rebuild with an aftermarket lsd setup in it. so as for traction i have it. im runing 225's currently on the front aswell and am looking at going bigger for drag days so i can put the power to the ground. Also depending on who u ask u get different opinions on what to use for your setup and thats my biggest problem atm

[Malcolm]

an LSD doesn't equal traction, especially not in a FWD. Maybe you should pay attention to the input from people like flygt4 who have experience with somewhat powerful FWDs.

Anyway you asked for opinions, but it seems like you don't want them, you just want someone to tell you you're awesome and your car is sweet.

how about you answer a couple of questions:
What is the purpose of building this car?
if motorsport, what class are you hoping to be competitive?
if purely for road use, what do you think is the purpose of 600hp?

[IH8TEC]

this is somewhat ammusing, as you have no idea, flygt4 had bugger all traction with 220 kw, i had bugger all traction with probably just under that. and they are 4agte's which have alot less torque

bazda has bugger all traction at times with hoosier slicks on, and you want more power than him

your stupid, get an idea on reality man, all three i mentioned about have good gbox's, bloody good lsd's, but do we get traction, no not really.

have you ever been in a high powered fwd?

just think about it SERIOUSLY first, thats all we are saying

[Barks]

AMEN!

[Mr Revhead]

remeber to play nice ppl



and remember to think of everything when building a car...

[Jazza]

Infinate, if you got unlimited dough, just 4wd it

[Infinite]

the aim of the vehicle is draging, if i wanted a awd i would have a st205 celica but i dont. reality is that if u do things right u get the results u want. but hay it seems like you guys are just a bunch of people set in the "u cant have a fwd car thats powerfull" way so good on you for that but do keep an eye out as time will tell unfortinitly my project is behind due to me changing cars tho as im fitting a roll cage the doors will be foul'd and i dont want that in my street car so ive got another curren coming to use as a mainly drag car

[Mr Revhead]

but hay it seems like you guys are just a bunch of people set in the "u cant have a fwd car thats powerfull" way so good on you for that but do keep an eye out as time will tel

are you using it on the street?
a FWD that puts the power down on the strip, will be horrible, no wait... dangerous on the street. you will need to drasticly change setups between both.


before chasing massive power you NEED traction. not just an LSD.
but you need to manage weight transfer etc.
in short if you have 20k to spend. id spend half on the engine
and the other half on the chassis. doing things like shocks (you NEED good coil overs with a range of springs) strengthing, brakes and TYRES.

[IH8TEC]

right, it's a different story if it's gona be just a drag car, by all means go get the power you want, but in the process think about the traction side of things, otherwise your going nowhere,

talk to bazda about tyres and getting alot of power to the ground to give you an idea on what would need to be done.

oh and i'd say you'll need at least 2.5" piping

[Lith]

um i dont want a supra or skyline they are ugly as sin...

<lisp> Yes, and Currens are really pretty.... </lisp>

You sound suspiciously like someone who has never been in something with over 400hp, much less a FWD with anywhere near that.

[Malcolm]

ok, so you want to drag, what class are you going to aim to compete it? Pro? Or just street? If you actually want to become competitive, why not build for say 300-400hp and learn how to set the car up to get the most out of it on the strip, then work your way up to more power when you have an idea of what setup changes you can do to fix issues you might have, rather than jumping in the deep end with no idea how to change anything about the car's behaviour on the strip?

You obviously don't want to accept the advice being given to you, and since you've argued against it so much now you'll be too proud to accept that anything you're hearing could be true and so you'll continue on your ridiculous path, and I'll bet you'll get 20-30% through the project before you sell it/scrap it.

[Dell'Orto]

Now look - you've been given some really good advice here. If you're after out and out power, there are far far better turbos to use than a T70. I think you really need to sit down and think about EXACTLY what you're after.
To be perfectly honest, this thread just sounds like alot of talk to impress people by bandying about numbers.
If you've really got the budget to make a 600hp FWD drag/street car, go and talk to some big workshops with guys who do this kind of thing for a living and will know exactly what you need to do what you're after.
Definately post up pics once its done