yeah i just meant into the pipe work somewhere, just didnt know where, now i do

1200rc, I know you didnt mean to say the wastegate vents air back into the motor, did you?

For anyone who is interested:

An internal wastegate is combined with the exhaust turbine housing. The internal wastegate will limit the boost supplied to the motor but will not control the boost, if you know what I mean. The internal wastegate will open at a set limit and send the wastegate air straight into the turbine outlet air. In other words it takes some of the exhaust gas and bypasses the turbine wheel but vents it to the other side where the exhaust gas goes.

This is not an ideal setup as the excess wastegate air will cause more turbulence at the exhaust turbine wheel reducing the flow. So you can create a pipe to run off the internal wastegate that diverts the wastegate air further down the exhaust pipe to reduce turbulence. Or you can not plumb it back into the exhaust but vent it to atmosphere, this is very loud. It is called a "screamer pipe", for obvious reasons.

An external wastegate works similarly to an internal one. It is mounted on the exhaust/turbo manifold before the turbo, but obviously is not part of the turbo. It needs a boost line from the compressor cover that will open the wastegate.

I will stop dribbling

The importance of a BOV, why it saves your turbo.

The BOV will vent the excess pressure when you back off to the atmosphere. This excess pressure otherwise would bounce off the shut throttle buterfly and back into the copressor wheel and produce a massive shock load.

If the engine has a BOV the turbo will have a more sustained life and the engine should have more durability and driveability.

I think that the Pssccchhhttt sound is great and if I had a turbo I would get a noisy BOV for the "wank" factor alone. But I very much doubt whether a BOV will give you a measureable power gain.

Mate I understand where you are coming from so I will leave it at that!
( To each his own! )

Quote:

I think you meant to say if you think 1200rallycar is a wank, good on ya!
( Nah just jokking! )

and i forgot, most stock tubo setups have an internal wastegate which blows air somewhere (i cant remember) but back in the motor to vent the air, i cant believe you guys are against the BOV, they are technically a very good thing (you all know why but obviously dont understand the importance) as long as it doesnt have a huge trumpet hanging off it, you should use it.

As far as that load on the gearbox thing, ive never heard such bull-shiet, i mean really thats like saying "i dont want to put a sports air cleaner on cause it will increase my power and put more load on the drivetrain" ( well maybe not that drastic but..) i mean you probably rev the shiet out of the motor when driving hard and dont let the revs die between shifts so why start worrying about that, the turbo still has to wait for exhaust to build boost again and there is going to be most exhaust when the motor is under load (after clutch is engaged) its just the fans in the turbo will already be be spinning quickly from the last wind up rather than going slow from trying to turn in "thick" air, and therefore longer turbo life

but anyway if you think a bov is all wank, good luck to ya

Finally someone atleast can vision what I am trying to point out!

And Barkp you cant always listen to Bob cause if you notice he has always been drinking when he comes online! lol!

( Sorry Bob! )

first off i have no experience in building turbo motors!

but 180 hp from a standard motor with mech fuel pump and a T25 sounds very unbelievable to me

or

maybe thats not what you were saying but still just bolting on a T25 is not going to give 180hp with right fuel pump on stock motor is it?

BARPK,

All I can say is I have told you what I have experianced with this setup! whether it was good or bad!
Others have told you what they think or experianced too!
If you do choose to go ahead with this setup
Listen to what has been said or don't listen! It's up to you as the only way you will learn is from first hand experiance!
Maybe this is even better as you could try something different and end up with a better result!

there is difference between Methanol and Ethanol!!!!
altough both r called Alcohol!!!!!
what the hell does that mean? which one is right stuff? or botth r fine.
BTW how do i make a alcohol injection? can it b done without any pressurized can?
what about windscreen water sprayer?
what about using a Spray Paint nozzle?
barpk

well, Gragongoose has really given a different perspective, but the prob is that i want a daily driver car, not a strip racer. and all i have is this Hitahi, but i liked this setup for weekends, maybe i should get a new 1200 for this 180 HP beast.
BTW what do u expect my HP will b on OE carb blow through setup @ 10 PSI.
and do u mean that pulsars have T25 OE turbo? or a T2?
and do u guys know what T does a Starlet IC Turbo have in it?
barpk