How Much Boost

[blink182]

hello all on my 205 dose any one no how much boostin bar i can run on a standered pistons with out put a nice big hole in the topof them? thanks

[adamgt]

The standard turbo cant create enough power to blow the standard pistons... its more a case of 'what can the turbo take' Most people say 1.1bar is highest safe boost or 1.2bar with WI.

I think im right...

[dawesy]

to be fair 1.2 isnt that safe. it all depends on age and condition of the engine, grade of fuel availiable. personaly id stick to 1.1bar and add water injection too. the std turbo is more than capable of blowing std pistons. the more boost it runs the higher the intake temp and the nearer to det you get. infact a std turbo is more likely to cause det that a hybrid runing the same boost and more power

get saving and get a set of forgies in there bung on a nice turbo ,a set of 850cc injectors and ind up the boost :P

[blink182]

ok thanks for that so 1.1 then wot do they run as standered i got a boost controler and defi gauges on the way need to pt a cluch in it first before i do the pistons i heared they are a right c*!t to do ? not looking forward to that!

[adamgt]

clutch will be expensive. the one im looking at having fitted at toyauto centre is around £1,000

[frodo]

yikes!

What sort of clutch is that?

[adamgt]

Its one that is recommended by Ian who runs Toyauto. Some guy had it fitted and said it is unbeliveable.

£1000 for a sports clutch fitted. Ive heard its a real long job.. like 9hours

If your a member of gt4oc i will try find the link for ya?

[Daz_s16]

£1k for a clutch lol thats shocking,nice one for forking out though.

Is it advisable to get a boost controller?

[frodo]

Bear in mind that a sports clutch is likely to be an on/off type of clutch. Not one that you want to use if in traffic.

[GTForbes]

a boost controller is a good idea if your after a bit more power. 1.1 bar would be the most i would run, and even at that i wouldn't run it at that pressure all the time.

£1000 for a sports clutch fitted is a great price as a sports clutch is usually above £6-700 so considering how big a job it is £3-400 labour is nothing

[dawesy]

clutch requires the engine and transmission to be removed and yes it can be a pain.

the clutch ian reccomends is a complete 4 paddle cerametalic plate and competiton cover, good for about 470ftlbs IIRC. it also includes a light weight fly wheel. ian tends to turn these round in about 9 hrs but it depends on how much of a pig the engine is to get out (things like lots of non std wires through the engine loom grommet dont help). bear in mind that toyota will quote about 11hrs labour for it it dont work out too bad.

welcome to the world of the gt four (AKA moneypit)

[blink182]

gunna do my clutch my self it willl be the 4 th one its had they like to eat the clutches but ant gunna take the engine out never been out befor just drop the sub frame and then take it out my mate done them befor said should be able to do it in a day?! gunna do it propper this time lighten fly wheel and twin plate clutch want the hks one but 1700 just for the clutch bit to much for my liken!