M535I

just to start what turbo is on my my98 uk turbo ?
well im going for a sti cdb in my wagon and im going to upgrade the turbo but i dont know what to go for , it has to be front entry and able to cpe with anything between 350-400 bhp !! any ideas please ?

garryrb5

Hi i think you have a td04 turbo. a vf28 is a good upgrade but will probably only see you to around 330/330 bhp for the 350 + youll need a vf34/35 and im not too sure if you have a mappable ecu?

renno rannes

Id go for a TD05-18g or TD05-20g.

Renno

Aztec Performance Ltd

iTrader: (234)

350-400bhp is quite a range.

A TD05-18g is a turbo that can give you somewhere between the two.

Clutch suitablility may be different at 350 and at 400.

Clutches, flywheels and turbos all in stock at great prices.


Bob

stevie1982

iTrader: (16)

and a new gearbox at that level if you have not already

Tidgy

rough guide for you

Tuning realy depends on your budget, no mater what model car you have.

i've gone from a more or less standard car (my00 classic uk turbo) to one thats got very few parts left in origional condition, but to do that i've had to throw a shed load of money at it.

shall base the upgrae stages obn a classic uk turbo for now.

so first things first, decide what you want from it, do you want to do easy mods that will help the performance, or do you want to eventually go the whole hog?

The basic engine mods start at decatting, uprating the air filter and remapping. on a classic at this stage a uprated pannel filter is by far the best option insetad of an induction kit.



Generic chips arn't worth it (excluding the PPP kit) the maps are either too general to make large differences, or they can cause serious runnign issues risking the engine reliability.



the basic cost is roughly £1000-£1500 ish to get to this stage, and should boost performance from 215bhp 215ftlb to 260bhp 260ftlb (as a rough guide, exact figures vary from car to car).



Next are basic suspension changes.



uprating the rear anti roll bar will remove some of the generic understear presnt in impreza's. (roughly £150)

Drop links will stiffen up the connections between roll bar and the car (roughly £100 per end of the car)

anti lift keeps stops the front end from going up and down as much, however this means a geometry setup is required. (combined roughly £200-£300)

Strut braces will reduce body roll (£120 front upper, £120 front lower and £100 rear)

basic upgraded springs (stiffer) (£250)



then basic brake changes



Also brakes should be uprated, 4 pots should be a minimum (although post 98 cars will have them as standard)

uprate fast road pads (£140)

uprated brake lines (£50-£80) further improve braking responce

uprated groved disks (£140-£250)



for all of the above your probibly loking at £2000-3000



After that it start to become more involved and much more expensive, but also depends on model.



Bake upgrades mentioned above are a must, and possibly the introduction of a uprated 6pot brake kit (£1200 -£2000)



Full uprated suspension, including dampers and springs (£800 for a full kit), adjstable is possibly the best option at this point, they tend to allow even stiffer settings but also allow for softer to be used when required.





Power wise your lookng at changeing the turbocharger, fuel pump and a remap to suite, however you'll hit a limit at around 320bhp on this set up.



roughly an addition £3000 (total £5000-£6000)



to get to where i am now (340bhp)



you'll need, uprated turbo (£250 for a second hand one up to £750 for a brand new vf34), front mount intercooler (£450), induction kit (£100), uprated oil cooler is advisable (£450), a full set of gauges (£650 for defi's), some cars also need new large fuel injectors (£400),



also your at the very top limit of the gearbox, an uprated on is either a straight cut ppg or similar kit (£3000) or a switch to a 6 speed gearbox (£2000). the standard clutch wont cope and will need uprating (£450).



The standard ecu may become a problem at this level (£1500)



now as a rough guess your up around the £11,000-£13,000





Once your past this point then your alkind serious money



the engine isn't up to the job, rods block and pistons can't take te boost pressures and will need replacing. Head bolts wont be strong enough, headers will be restrictive, as well as all the parts monetioned above becomeing also not up to the task.



a full custom rebuild to get to that sort of power your talking (very very rough guide), with varous of the above mentioned parts



£7000+ for 400bhp

£12000+ for 450bhp

£15000+ for 500bhp



and the cost per bhp goes up and up, past this point its so variable as to the cost you can't give guess figures, they have to be priced up professional.





The price shown are rough guides and vary dramaticly depending on tuning company and market prices for parts.



however what i can tell you is there are some off the shelf engine that can gve mega performance and for what they are arn't overly pricey (in context anway lol)



Scoobyclinic do an off the shelf SC450 package which iirc is £12,000 plus vat for a 450bhp engine, icluding suitable clutch and gearbox. hich is very good value indeed, but is a whole different ball game as far as performance goes.



So it goes back to the question, how far do you want to go, and whats your budget.



hope that rough guide helps.

RB5 Boyo

Rough guide?? He will need a day off work to read all that ....some good advice and pointers there Tidgy

M535I

bloody hell didnt expect that lol cheers though , i have read on andf turbo site and though of a td05 20g to be honest sounds like what i need ? gearbox well well see what she can cope with lol , cheers bob will keep you in mind mate deff going to need a clutch .cheers for al the replies .

stevie1982

iTrader: (16)

mate use a 20g or 18g infact and your box 90% of the time will give up, the comon figure seems to be 330lbs at that is border line. some people do run a lot more and have had no issues some a lot less and it had given up. jusdt put in the back of your mind that if you go for that sort of power you will more than likely be getting a new box

M535I

yea its in thear allready mate lol , its only done 0k so im hoping it might take it for abit il go to an sti box i expect or one that can atleast take the power.

stevie1982

iTrader: (16)

k cool. just soem folks seem to forget the box, they do this thred first then in a few eeks time one appers my box just died, i am in same boat as you just cant work out if i can justify the cost for a new box, clutch and flywheel on top of the larger turbo, exhaust tweek and re-map, it in my opinion is a ot to throw into a car that i may or may not keep so just holding out at the minute as the money that need sto be spent could go towards a newer scoob!!!

M535I

well the way im doing my wagon is this mate .... if i sell it and i get some money back thats fine i think the only time you worrie to much about spending to much i if you want get it back plsm jut dont tell my mrs lol.

morpheous

iTrader: (9)

Just buy my car its all done just like tidgy says

M535I

i might wish i had brought one when im finally done but its more fun this way lol apparentley !!

Tidgy

i wrote it a while back and thought i might as well keep a copy to hand then ca use as and when glad i did