Mrchips

iTrader: (7)

Right I am looking into more power and been looking for ages, at what is the best way.

I have a MY00 Uk classic.

It has a WRX engine, from a newage. Not sure if they are stronger, it just came at the right time. It was just the block and heads, kept all my bits inlet manifold etc.

Right to the question in hand.

Thinking about going for around 360BHP with similar torque levels. I like good spool, as i have the Hybrid TD04 at present. Been looking at the SC36 and gets good write ups.

Would I need to upgrade engine parts ie pistons etc. I know the gearbox will be on its limits.

Can anyone help, in the best possible way, to keep everything running and not breaking.

So many things I want to know. This may go on for a while.

Thanks guys, and merry christmas

Tidgy

360 will be pushing the engine, but tbh i can't see any point in rebuilding unless your gonna go to 400ish, just not worth the extra 4 figures for the rebuild. limit it to 350 and your not far off your target and mor eto the right side of reliability

personaly i'd go sc36, fuel pump, decat, injectors front mount and a map, may be syvecs so its for more in the future.

jura11

iTrader: (7)

As above 350-360BHP is safe,but if you are think go further for more BHP(400BHP+),you will need i'm afraid rebuild engine,but this will be depends on your engine(how many miles,oil changes etc.),if its OK,i will recommend go to Scooby Specialist on Health check,and after you will see.
Recommendation for 360BHP:TD05-18G(genuine) or SC36,STi pink injectors,Decated Exhaust,Walbro Fuel pump,STi V7-V9 TMIC or FMIC,remap(just i'm not sure if is your ECU is mappable) or go for aftermarket ECU like Simtek,Apexi Power FC,Syvecs
Maybe this help...


Jura

C. J.

iTrader: (2)

Engine was happy at 400 bhp for 2 years
sc36 or a md321h

Tidgy

you got lucky, i know people running 330's who's have gone bang. its just luck and how its treated, bit like gearbox's. people say the classic 5 speed will take 350, mine blew at 260, so just depends.

Billet

iTrader: (60)

i agree. my wrx gearbox also went bang at 265bhp and thats the newage one which are supposed to be quite strong.

Tidgy

all 5 speeds are weak, theres lots of wild claims about p1 box's and then later box's etc etc, once you hit 350 your maxed and on borrowed time, asssuming it survives that long.

carpboy

iTrader: (2)

My 5 speed box was handling 420 bhp going down the strip no problem.

Tidgy

again luck

carpboy

iTrader: (2)

Will never know as now running a scooby clinic gear set built by API

Tidgy

haha, i went ppg straight cut in mine

Mrchips

iTrader: (7)

I've got most mods ready anyway.
I have, sti8 top mount, fpr, 3 port, porter headers, 3 inch turbo back exhaust, fuel pump, parallel fuel mod.

Oil is changed very frequent, I'm talking every 5000 miles.
Engine is on about 75000.

As CJ said it made 400 as it's his engine.

Would 440s injectors be ok for 350- 360.

harvey

iTrader: (48)

440 injectors will max out somewhere around 325 bhp and with a fuel pressure regulator they may go to 350 bhp. If you seriously want to go beyond whatever the 440s will produce then go for a set of 500 or 550cc injectors. Some good deals to be had on these. (Not pinks, these are fitted to New Age only). OK I see you have an FPR so see how far you can get on 440s but you will need 500 or 550 to get the best out of it.
Buying a secondhand turbo could be an issue but VF34 is capable of up to 360 bhp and VF 35 around 340-350 bhp tops. Capable of does not mean you will get that figure just that with the right mods the turbo can produce that power. New TD05 18G HS1814P, with ported exhaust inlet, uprated actuator is £725 and £50 to fit.
Start with a fuel pump. I now see you have one. I would be happy running your engine to 380 bhp and the TY754 gearbox is good to well over 400 bhp in my experience providing it is driven intelligently. The TY752 on Classics MY93 to 98 however will break in time and certainly by 350 bhp it is time to have a replacement, preferably TY754 available.
Ported headers with matched uppipe will help you on your way greatly as will the complete decat.
An efficient front mount intercooler will show a power gain over the STi 8 top mount at your planned power level.
Good luck with it.

Mrchips

iTrader: (7)

Cheers harvey, seriously doing this in new year, On the 18g how quick do they spool, as trying to get a quick spooling turbo. I know BHP is one thing, but making the car spool and drive like a rocket thats what I want really over BHP.
Is that price for turbo including the dreaded VAT?

Cheers

harvey

iTrader: (48)

The 18G is recognised as a good spooling turbo for the power it produces. It won't spool as quickly as a TD04, nothing on a Subaru will but in my experience it will spool as well as a TD05 16G with a good margin additional power on top of the 16G.
The existing modifications on the car will greatly influence spool and response and particulary the headers and uppipe but every car is different so I cannot say it will make 1 bar of boost at x rpm in 4th gear.

JonMc

iTrader: (51)

Hey Harv, sorry to hijack, but am I correct in saying that the newage WRXs have the TY754 box. If so, how come so many people state that 350bhp (or more like the commensurate torque) is the limit of the box? I know from a previous thread that you've had more but was that just because you were more sympathetic in the way you stirred the ratios?

Secondly, that price for an 18G, does that include new oil lines, gaskets etc or is it just the turbo and actuator?

Cheers

Jon

Jamz_

iTrader: (12)

Why are these only for the new age Harvey? Carl Davey does adapters for these to fit?
http://www.carldavey.co.uk/product.php?id=12

Mrchips

iTrader: (7)

Hi Harvey, I already have ported headers. but not up pipe. So would it be best to have one of your up pipes? Or go with both your up pipe and headers? So they match?

Thanks

harvey

iTrader: (48)

Jon: The TY754 boxes came out on the 99 model year version 5 cars and carried on with all 5 speed WRX on the New Age cars. TY754VBXXX is a Jap box and most likely to be 4.44 diff ratio with 1.0:1 drop gear and obviously 4.44 rear. However, this has to be checked as there may be 3.9 ratios about.
TY754VN is a UK or European box with the ratios 3.9 front diff, 1.1:1 transfer box and 3.545 rear diff ratio.
The TY754 box is much stronger than the TY752, possibly because it has a stronger casing and apart from the sticker on the TY754 or TY752 bell housing near the starter motor the difference between the two boxes is easily identified because the 754 bolts holding the two gear box halves together are in line whereas on the 752 they are staggered.
300-350 bhp and it is only a matter of time before the TY752 box breaks. I and many others have run the TY754 a long way past 400 bhp and I did in fact win Scooby Shootout with my STi 6 Wagon some years ago with a TY754VB???. That car went on to produce 585 bhp and 464 ft.lbs on race fuel still on the same gearbox.

18G comes with uprated actuator, ported exhaust inlet, water pipes and oil drain and I am prepared to throw in the downpipe and uppipe gasket. Exceptional value for money. A good tough turbo, pretty fast spool and 360 bhp capable although several customers report a good bit more but different rolling roads................

harvey

iTrader: (48)

Jamz: Pink injectors which are top feed do not fit Classic cars which run side feed injectors. If people want to get a conversion kit that is fine but I don't want people believing they want pink injectors when pink injectors on their own will not fit.
I think you are being very picky. By all means point out that a conversion kit is available in the same way that conversion kits are available for Phase 2 to Phase 1 injectors.

Mr Chips: If you already have my ported headers then you would be best with my uppipe best suited to your turbo. However if you do not have my ported headers I cannot honestly give you an answer without examining the headers you have. It is extremely unlikely headers ported by someone else will have been ported in the same way as I have ported my headers and developed the porting after many flow bench sessions. I am of course happy to examine your headers if they were here either by carrier or because we were fitting an uppipe for you. Sorry I cannot be more specific.

JonMc

iTrader: (51)

Cheers Harvey, I'll be in touch once the bodywork is finished

Jamz_

iTrader: (12)

Not being picky Harvey, just you got me worried as I have a set of pink sti injectors sat in front of me, and just paid out some money for the conversion, and saw your post, and thought I had got it all wrong.

dunx

iTrader: (3)

A 2.5 is going to do all that, even on your std turbo...

LOL

dunx

BLACK V5

Bloody hell, i must of been really unlucky then as i blew my ty754 on my version 5 running the standard 276bhp. And that was with no track days or drag starts.

Anger

iTrader: (4)

My STi5 one in my old RA lasted 2 years on the drag strip at 417bhp 378lbs/ft with times in the high 11's

Theres a 18g forsale on Surrey and SES Chips

harvey

iTrader: (48)

If you fit a paddle clutch on any gearbox the shock loading will reduce the life of the gearbox. If you are running an organic clutch on a TY754 and drive intelligently chances are the box will last for a long time. All 3 of my Wagons have or have had TY754s for a long time. 420, 422 and 550 plus bhp. 550 plus bhp is now the latest 6 speed. None of the gearboxes broke/have broken but I have changed one centre viscuous. All 3 cars have done numerous drag starts, 11 and 12 seconds and like I said above one of the cars was winner of Scooby Shooutout.
If you do a traffic light grand prix start and power off every roundabout at every occasion then obviously you are stressing your gearbox far more frequently and so gearbox life will be that much less I guess but the TY754 is far more capable than the TY752.