obviously as cheap as possible,but i do have my vf48 to sell and is near on brand new.
really dont know what would be best.im not going 6 speed so need to be a bit carefull with torque output,it dosent need to be a super quick spooler but certainly dont want a laggy turbo.
id like to see conciderable gains if im going to spend out,i would be happy with anything between 330-350lb ft,but would like 360+ in bhp really.
hmm decisions decisions, if a vf48 is on par with an 18g then would i not get similar results to what i have now?

does an sc42 deliver the power smoothly or will it **** my gearbox??

 

anyone?

 

What about Harvey's turbos? Based on the td05.

 

Is your box a 752 or 754? If the latter then it'll be fine!

 

its 752,but this is one of the reaons NOT to go 400,.....350-360 bhp and 330-350 torque should be alright,it gets an easy life does my gearbox.

 

what options/prices is harvey doing?

 

i know of someone running just shy of 400 bhp and 380lbft and has done for over 3 years on the dccd752 box,with over 30 drag runs and has never missed a beat,he also has launched the **** out of it,my car does not get treated this way.

 

If you treat it right, it will be fine!

 

Hi I have a v4 sti engine so does that mean I can fit an sc42 and all will be ok

 

OP has a Newage Sti engine in his, but yes I have seen 400+ from low mileage early STi engines too. I wouldn't however recommend anyone to tune an engine if they can't afford to replace it should all go wrong.

 

the trouble with the early sti engines martyn as you know,alot havent been mapped for uk for most of their life,you then map one for uk fuel and tweek up the boost and hey presto a bottom end failure,thats exactly what happened to mine.i would defo not recommend a sc42 for an old sti engine that hasnt been rebuilt etc,maybe i was unlucky but most failures happen around 75k and mine was on 77k.
the motor i have now has scope for 450 ish but i do not want to break the box if i can help it,so looking for a little more power and torque now without a meth mix,just seems a very difficult decision to achieve the target without buying new£1500 turbo etc.(360/340)

 

ok try the MD321H from lateral performance ...good for 400bhp

 

is it laggy? i think they are expensive arent they?
are they any cheaper options that will do?

 

MD321H is not laggy and its great on WRX and on your will be good too.
If its expensive,yes is it,new one,if used you can pick up sometimes easily for good price.

18G should be OK,on yours or SC36 is great turbo which cost not too much as new

Jura

 

Are you bored of the power then?

 

not bored,the type r close gearing makes it very quick car,but with 338/316.
i just know with 360/340 ish it will be mental!
thats where id like to be but without using meth as i hust cant be doing with it..

 

what about sc38,i pressume sc36=360bhp,and sc38=380bhp?and the same for sc40 and 42?

 

Yes, very smoothly and don't forget, the fact that it can produce 420bhp, doesn't mean it has to. Run a nice safe 380bhp if you prefer but it'll make no difference, if the box is going to go, it'll go regardless.
I know of 2 owners of STi 3/4 vehicles that put up to 540lbft through their standard boxes and they were still ok.
Other owners can destroy boxes with just 300bhp, so there is no safe limit, just wind it up and when it goes pop, rebuild it.

Martyn

 

If Kev has a roller bearing SC38 out, then have a look at that if you like.
In my personal experience of the range of SC turbos, you may aswell go bigger roller bearing than smaller sleeve bearing, as they spool just as well as the little ones but make more power.

Martyn

 

Sc36 can see 390 hp with a splash of meth
As you say that's pushing it though on you gear box
Although a mate has over 500 hp on sc42 on v5 but recently swapped out the 5 speed for a six ...
I've got a sc46 in blob and very impressed but want a sc36 in my sti v5 wagon as it's a everyday car and will get used for dogs, trips away etc

 

Thanks for the info MJ my engine is a v4 sti and was told when i brought it was a low milage with only 17000 miles so hopefully it will be ok i also have a very good 2.0 ltr cdb and some ported heads all ready for 2.1 stroker when the funds present it self

 

thanks for the info martyn,they are alot of dosh tho.
is there anything that will do similar for cheaper?

 

every body`s been telling you the facts, what more can we tell you.

i told you the sc range werent cheap, neither are the md 321 series

340 -360 - vf34
360 -380 - td05 - 18g

 

yeah **** that,im going meth lol.