turbo idea...

[welsh_kroozer]

im getting my v6 done in febuary and im really thinkin bout skinting myself to do a turbo on it.... so....

do i really have to stick to a ct26? or can i buy 1 of these mothers

http://cgi.ebay.co.uk/2JZGTE-Toyota-SUPRA-GT45-Turbo-KIT-MKIV_W0QQitemZ250186823031QQihZ015QQcategoryZ72205 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

i would be getting a pwr 900bhp charge cooler to support it...

what do you all think? :driving:

[weegaz22]

Thats gonna be a tad laggy i would imagine

[Shorty]

That`s awefully big don`t you think? But then again, would give you a kick in the nuts when it unloads though. Know what i mean?;)

[Marksman]

You could of course but have you considered what it would take to support this, forged internals, new injectors, standalone ecu, and a shed-load of rolling road time to name just the basics. I hope you have a well stuffed cheque book!

Could be uber-fun though!

Owen.

[biteme]

For a GT45, I'd honestly recommend a 5VZ - with the extra 400cc displacement.

Unless you're making a drag strip monster, I'd look at the GT40R. That's the largest turbo I'd put on a 3ltr for day to day use/usable and tracktable power. One of those is capable of flowing enough air to get you around 600bhp if you up the boost enough. But if you do that, you need cooling.

Injector wise, on the V6, I think if you use 1.2cc/bhp then you won't go far wrong. For 900 bhp = 1080cc. So you can either drop to 1000cc injectors or got for 1200cc - but then you have the problems of idling etc. 1000cc is the highest you can get and have a reliable idle.

I think you need to look at a budget initally. A 900bhp build IS VERY EXPENSIVE. Trust me, I know - and I'm only aiming for 700!

[welsh_kroozer]

i do want to aim for 600bp... i will be doing injectors and ecu... everything thats been done to whoozys turbo, even water injection if i need it..

so if i go for gt40 and 800cc injectors then i will be in easy reach of 600bhp?

im not worried about it doing 1000rpm or there about at idle, i want it to sound like a proper monster..

[weegaz22]

at 600bhp you gonna need to stick uprated interals in it, so budget for that as well

[biteme]

i do want to aim for 600bp... i will be doing injectors and ecu... everything thats been done to whoozys turbo, even water injection if i need it..

so if i go for gt40 and 800cc injectors then i will be in easy reach of 600bhp?

im not worried about it doing 1000rpm or there about at idle, i want it to sound like a proper monster..
In theory, 600bhp will be possible, but your shopping list will be needing the following (at a minimum):-

Forged pistons
Forged lightweight rods
Ported and flow tested head
Stage 2 FI Cam profile
Hi-flow Valves
Valve Springs
MLS Headgasket
ARP Headbolts
Walbro 255ltr/hr fuel pump (possibly a twin pump setup or an 044 external pump).
800cc injectors
GT4088R
External Wastegate (45-50mm and around 1.0bar spring)
Chargecooler or large Intercooler (probably boot mounted).
Standalone ECU with boost control for around 1.8bar pressure.
RPS Max Puk Clutch with 525lb/ft clamping capacity
Fidanza V6 Flywheel

That's off the top of my head - there will be more, such as manifolds, larger throttle body, installation, wiring, plumbing, bearings etc.

Getting 400bhp is a lot cheaper than 600bhp!

[LEAKIE TBAR]

You will need a black stick with two white ends on,, to get to 600hp

:hidesbehi

or a massive pile of cash

[biteme]

Anything is doable. With money.

The most powerful 3ltr V6 I've seen is Brad Beddell's 1MZ. I think that was 570bhp.

I really think 450bhp in a V6 with the extra torque is ultimate

[welsh_kroozer]

ok... lol... 450hp it is then. i am getting uprated internals and rods didnt really think about valves and cams but then again if im doing internals and having the head work done then i probs would have had them

i was gonna go for a 50mm external wastegate with scramer pipe exiting from the side..

i been looking at turbos, waste gates and dump valves from xs power.

do arp do head bolts for the3vz-fe???

[biteme]

They do - but not off the shelf, you need to get the Mitsi ones and have them cut down. Works perfectly though.

If you want me to put a quote together for some bits, drop me a PM dude

[chr15_84t3]

That`s awefully big don`t you think? But then again, would give you a kick in the nuts when it unloads though. Know what i mean?;)

paul mate if all your after is a kick in the nuts i'll be happy to save you some cash and do that for you :D lol you deffo got it all sorted for feb then? i'm slacking, WAYYYY away from gettin it done lol

[welsh_kroozer]

u huh... deffo sorted, been looking at what bits im getting... probs bout 4grand all together for all the bits im going to get.

[biteme]

Great times ahead for the V6.

Some really good cars on the way :thumbsup:

[welsh_kroozer]

u huh, deffo... how much are the MLS headgaskets btw???

[biteme]

I'm just waiting for word on those... watch this space :)

[snowtigger]

im watching fuck alls happening though.

[OlberJ]

Without sounding like a party pooper, all this talk of 400-700bhp sounds very good. But i've heard this chat on "other" sites and this refers to peak power only. (We all remember the mount everest style power graphs, yes?)

The reason i love the V6 is because of the power delivery, so what i wanna know is, what's the power graph and, more importantly, torque gonna be with a V6 with these sorta power figures?

Because to me, a car with 450bhp and buckets of torque all through the rev range is gonna be miles better than an all or nothing 700bhp drag car.

[biteme]

I agree Olly, as my post #10 shows :)

A 450bhp V6 will be much nicer to drive and significantly more tractable than a 450bhp I4.

[OlberJ]

So is it best to go with a S/C that can give you that level of power and a better torque curve (do any exist)? Or will these turbo's that have been mentioned give a similar effect?

I'd be wanting to keep the character of the V6 in any way possible, therefor am thinking S/C'd V6 as opposed to Turbo.

Or would Twin Turbo's, one small, one big be the best option? (Am thinking in line V6 before we go off topic about space in the bay)

[biteme]

I'm using a large turbo on mine primarily to add top end grunt. I don't need any more low-end.

If you get a nice turbo, like a GT28RS or the GT3071 and run it at 7psi or thereabouts, you'll basically make it feel like a very torquey N/A.

Sequential Twin turbo is just too much pipework really. Have you seen the Supra engine bay?

[OlberJ]

Oh i know but nothing ventured and all that. Fancied something unique.

May try you're suggestion on the current mk1 though at some point cos the Turbo definitely seems to be a lot cheaper than S/C's.

[biteme]

Yep. Don't forget a decent I/C though :)

[LEAKIE TBAR]

What was the Spec on Brads car to achive that 474.2 rwhp 534.9rwtq

It cant be everyday power if he had to use 120 shot of spray to get there

:confused:

[welsh_kroozer]

what turbo should i get for a low blow setup until i get internals done?

[biteme]

I'd say either a CT20b or a CT26A (from the Supra).

The alternative would be to get the GT28RS now, and have a 7psi spring in it. Get the internals done at a later date, and then have the spring changed.

Are you planning to run this off a stock ECU or are you going standalone?

[welsh_kroozer]

i am going standalone after i do the internals, but stock at the start with low boost... i will get an air/fuel meter so i can keep check on the fueling.. what power would the gt28rs on full boost give? i been looking around for prices for a gt4088r and i can get 1 for £500

also... could i use an apexi boost controler with the hydra ecu???

[welsh_kroozer]

just checked on a gt28rs and they will only flow up to 350bhp.. so might get a cp26a until i get the internals and then get a bigger turbo later on..

does anyone know for sure that the engine wont take 450bhp without stronger internals? or are internals being done as a precaution?

[snowtigger]

id go up to 300 on standard just as a precaution because the standard engine is about 156 or 177 depending on year so double the power double the stress on the internals .If u uprate the internals rods pistons valves i would do the top end gas flow new valves springs first. then turbo low blow then when every things settled in start phase 2 bigger turbo uprated internals stand alone ecu this is wot ive talked to johhny on here about seems to be the general concensus of opinion after phase 2 should make it pretty bullet proof hey johhny where are the composite head gaskets coming along

[welsh_kroozer]

.. i will just stick to low low for now then and change internals later on... right. dont let me change my mind now then,.

[OlberJ]

It's a good idea WK, we've yet to see how a standard V6 does with a low blow turbo setup.

300ish BHP would be very good indeed.

[welsh_kroozer]

300bhp would keep me entertained for ages aswell,,, 170bhp is the most power i have had so far... would be pretty scary jumping into a 450bhp monster after that...

[snowtigger]

try a twin turbo v8 with wizards of nos 120 shot of nitrous hehehe or my mum had a lotus Carlton with it chipped 600 bhp fastest granny in the north west she bought an avensis cause she needed to slow down .The sales man said to her condescendingly its quite powerfull you know these vvtis which made me snigger so i had a word in his ear he looked a bit shocked.When u get use to 300 u will want more dude i had sierra cos and escorts cos up against the rover at the traffic lights gp i would signal to race they would laugh then i would blip the throttle and their jaws would hit the floor pity i blew her up .

[welsh_kroozer]

lol... ye, will deffo want more.. better tha 1 start off with 300bhp then, coz if iust jump into a 50bhp monster then its all gonna start costing 10s of thousands

[biteme]

if you are planning to do the ecu after the internals then you're limited to 4psi or less. After that you are going to be very lean.

If possible, do your ecu as soon as possible. You will gain more in my opinion.

[welsh_kroozer]

is that because it would be charge cooled??? so there would be more air into the engine compared to the superchargers running more that 5psi?

[biteme]

Partly.
it's also got to do with the volume of air etc