Turbo experts...

Leaving the wastgate at stock boost pressure and adding the intercooler (i'd use a front mount one- the engine top ones are not that efficient- both in terms of intercoolery-ness and also restrictive in flow) you would see abit of an increase in performance.

However you would loose alittle boost (so the engine feels less boost in actual fact) through the core and the extra ummph would only come about through denser air.

You can acheive the same thing with a slightly cruder thing called a bleed valve which bleeds off some pressure from the sence hose so the wastegate feels less pressure- so opens later. See Demon Tweeks or similar.

Becareful how you plumb it in- you should not interfer with the aneroid sense line to the injector pump as lowering the effective pressure seen here will decrease your fuelling and strangle the motor.

You may need to tweak up the fuelling screw abit also, stock boost or higher as there will be more oxygen available for the fuel to burn in. A smoke meter is handy at this point, as is an accurate boost gauge (essential) to set the thing up so it doesnt go bang.

Tim..

Front mounted is not an option, there is no space. Plus intercoolers are used on top in other cars with the same engine, so it can get all the bracketry and other little bits quite easily.

Sounds like it could be a good idea.

I belive that comes off the manifold rather than the turbo, so that can be left well alone!

I thought i'd have to fiddle with the fueling. A boost gauge is already planned as i want to put it in before i start anything to see how healthy the turbo is.

Cheers for the advice, very useful.

You need a

"Nom" wrote

I was about to say something very similar except use this link:

That is what I'm planning on fitting to the Celica once I finally get round to fitting the Boost gauge (just fettling the pod mount to fit ATM).

That is what I was running on my GTS-t Skyline. I still have it in the top of my toolbox. I think I paid about aus$8 for it from a place that specialises in air fittings. Festo they are called. Probably in the uk somewhere. 22 quid is a serious ripoff.

Fraser

hehe i got offered one free but said no! shoulda said yes and donated it to you :) i want an apexi AVCR for a bit of dash bling rather than a hide away boost control! plus i can set different boost setting for different gears i think with the AVCR, and adjust boost in car which is nice for them slippery winter roads :)

Was thinking about getting the bits and making my own. Shouldn't be too hard at a plumbing/DIY store.

Don't want dash bling. Discrete car PC for me will do, won't hardly even notice it when done. Closest to bling I will get will be the 3 gauges in the pod, and even they go blank when off.

Slippery winter roads, Hmm, 4wd, hmm, should be fun.

Cool that looks just the job. One of those will be going on my shopping list. My turbo is a KKK, which has integral wastegate and actuator, i assume this will still be ok to use one of these valves since it seems as though the little bendy pipe is the thing that feeds the pressurized air to it. I think i need to try and get hold of a turbo and have a look at it. Used to have a couple laying around too

In news: snipped-for-privacy@individual.net, Carl Gibbs decided to enlighten our sheltered souls with a rant as follows

Beware BX engines and trying to put them in 205s..

BTDT, the engine mounting lugs on the motor are nowhere near the Pug ones.

souls

Are you sure its not just the mounting arm thats different as i thought they were all the same? A 1.8TD from a Rover 218 definately fits so thats another option. But i think i'm just gonna stick with my current engine anyway now

If your boost pressure is controlled *solely* by the wastegate, then plumb the valve in just before the wastegate, and away you go.

The issues come when you have something else controlling the boost - be it the ECU, or some sort of automatic solenoid like Rover use on the T16 lumps. If this is the case, you need to remove/bypass it - the brass valve should really be the *only* thing controlling your boost.

In news: snipped-for-privacy@individual.net, Carl Gibbs decided to enlighten our sheltered souls with a rant as follows

I'm not 100% sure about the diesel motors being different, but IIRC the diesel used the same basic block as the petrol, and the 1.9 Petrol isn't swappable. Cost a friend of mine £600 to find that out.

souls

I'll scrape that idea then. Cheers for the info!

Yeah, essentially it is, but my Haynes manual says everything is integral and cannot be fiddled with. however a dutch website i've attempted to read suggests it has a 'wastegate feed pipe' which you can put the little valvey thing into. Obviously i'd like to confirm this before buying things! I'm trying to get hold of a turbo i gave away a year or 2 ago to study it a bit.

Assuming all my plans will work, then i reckon £150 should be enough to sort me out with everything i need. Should give me 15 or so bhp with a bit of fiddling with the fueling, maybe even a bit more. Doesnt sound a lot, but it only has 78bhp at the mo. With the torque as well it should make a noticeable difference, so i wont be lagging behind the GTis so much on events :)

You know, you can get Superchargers for RC engines ;) Although apparantly they don't do much, summet to do with the ports or something, but they look and sound cool :)

Sweet! Will have to look into that in about 5 years time when i have some money :) I'm quite happy with mine at the mo, although i need to spend some time setting it up as its running a bit rough and the brakes dont work :)

Well there must be an airway SOMEWHERE carrying the flow to the wastegate, otherwise it'd never open :)