dunno if any one can help, a mate has had an engine rebuild by vulcan, low comp, headwork, etc, standard turbo, chip, -31,new boost hoses, cannot run over 12 psi, have changed turbo, hoses, chip, actuator, metering unit, all from mine which boosts fine, any ideas as we have no idea now

 

is it a chipped ecu????

is there a bleed valve fitted

have u tried winding the boost up with actuator?

 

yes mate, its chipped and tried my ecu which i run at 18 psi, opened bleed valve fully and wound actuator right up too

 

What is it doing? Back firing? Or just not boosting very high but running smoothly?

 

dont back fire, just holds back and wont boost proper, soetimes splutters a bit

 

Right well personally to me that sounds like the turbo isn't running effeciently, my guess would be the waste gate housing is cracked or the wastegate itself is damaged. Thats what controls the boost on the turbo and if your saying you are undoing the bleed screw fully and its still doing it thats about all it can be.

With the screw fully out the turbo should boost and boost and boost until the weakest part on it lets go.

You've got 2 ways of determining if this is the problem

Safe and annoying as fuck way:

Remove the turbo, and take off the exhaust elbow and inspect the waste gate, or:

the potentially dangerous but easier way:

Pull the pipe off the actuator and literally see if it will boost higher than it has previous, if/when it does stop boosting STRAIGHT AWAY. It's not guaranteed to work this way either if the wastegate is really fucked it wont work.

When mine was cracked i actually REMOVED the screw from the bleed valve before discovering the fault, and it would peak at 10psi but hold 6psi.

 

we have changed complete tubo along with manifold etc, so not that either, peaks and holds at 11/12 psi

 

Was the turbo brand new?

If the car won't boost above that but there is no signs of a boost cut coming in its either the turbo or hoses collapsing, really isn't anything else it can be. The fact its boosting to 12psi proves the ecu it has is chipped and therefore rules out boost limit from the equation. U would know if it was the boost limiter believe me

 

turbo was put on from my car and so were hoses, mine has no problems, weird as fuck, vulcans dodgy building probably, know of a few to come out of there shagged, cheers anyway

 

If the engine runs and spins the turbo theres theres not really anything that can affect how much boost the turbo produces. Just because it ran on your car don't take it for granted, you have nothing to lose by whipping the turbo off and having a look, you'll be surprised how quick these things turn around and go wrong.

Mine was running a happy 6psi but when i started getting problems someone suggested it may be the clutch slipping, i was certain it wasn't but we turned to boost up anyway to see if we could identify any slipping, then it started hitting the limiter, i turned it down to 2 psi after that, to save some fuel, then not long after when i got a chipped ecu.......i couldn't get it to hold higher than 6psi, took me ages to work it out. It's a very common fault on T3's

 

i see what your saying, but it done it wiyh original turbo, then put mine on, still done it but mine is back on my car now and works fine

 

Well thats certainly a wierd fault. Have you ever had this engine running properly? I'm presuming its CVH, and what fuelling system has it got?

 

it was running ok, then it caught fire under bonnet, not too bad, was taken out checked, new loom and metering head and various other parts that had been damaged, since then shit but as isaid we have tried everything we can think of from my car with no improvement

 

LOL i can't believe you just said those 2 things in the same line lol

Right well.........one thing that does spring to mind. Is it running an amal valve. Also are we talking S1 or S2?

 

alright chaps, sorry to butt in on the convo.,

s1 estate

i presuming this turbo has a boost gauge, if so where does the supply come from? is it direct from the blower or some where on the intake pipe? Is it defo. the blower under performing? Is it running a uprated intercooler or standard? If standard might this eng. bay fire melted the intercooler somewhere as the ends are plastic i believe.

safechav

have u checkout my post about shitey cvh rattle? any ideas?

 

If it's a series 1 its a cast alloy intercooler, but in anycase MFI systems won't work with airleaks.....nice thought though

Yes already replied aswell..........

 

hello mate, gauge comes from ecu pipe i beleive, and front mounted intercooler, as for is it blower, dont think so cause has been changed, only thing i can think of on yours is maybe cam, is it a t2 cause they tend to wear bad on number 2 i think

 

Cam wear problems are usually on number due to a design fault on the head.

s1 estate I think you've missed my reply for you

 

and yes it is series 1, the estate in pic, was mine before hence name, now own cab

 

Collected the whole set by the looks of it

When you changed this loom........did you change the fuel pump relay and injection module relay or keep the originals?

 

i know he changed fuel relay cause it fucked other one, as for inj mod, do you mean one under bonnet or footwell

 

Ahhhhhhhhh........now we might be getting somewhere......one of the relays under the dash has a rev limiter incorporated into it. Im 99.9% sure its the fuel pump relay......how high does the engine rev?

 

revs fine till about 3/4 grand then holds back and seems to splutter, he did say if he leaves it ticking over for a bit then boots it it goes better but still dont boost up past 11/12, changed tank and pump and flushed lines and injectors too

 

Right well i think we've found our problem........sounds like the rev limiter is cutting in to me.......and its going to be hard to hold high boost at that sort of rev range. If you've got the old relay smash that in and see if it runs any better. I've got a feeling it will

 

which relay do you mean, one in footwell?

 

Yeah the relay up under the dash. Just to clarify you did replace the loom for an S1 loom and the Fuel Pump Relay is SILVER and not PURPLE?

 

no mate series 2 loom and purple relay, prick put series 2 dash in

 

Right scrub everything i just said

 

sorry mate should have mentioned that

 

i think the only thing he aint changed is intercooler but looked fine, can they get heat damaged inside? no traces of burning or anything

 

It's alright not to worry it came up one way or another.

Im out of ideas i think on that. The spluttering doesn't sound right, have you checked the ignition system? Another common one on these is the sensor breaking down in the dizzy, if that starts cutting out as 3/4k then it will have a rev limiting effect. When it splutters does the rev counter doing anything strange?

 

not sure mate, wil speak to him tomorrow and find every little detail, cheers for your time on this

 

No problem

 

silly queston has anyone checked that the timing isnt out? if the fuel aint buring properly it certainly dont spin the turbo up properly.

also is your cam timming correct? cvh will run a tooth out either way and all it does is limit the engine performance witch leads to low boost.... again a partial burn only exhausts half of the pressure to the turbo housing.....therfore not spinning the turbo properly

have a look ....nowt to loose..L

 

I must admit actually i did have that rolling through my head aswell although i kind of convinced myself it wouldn't be that. But agreed certainly nothing to lose, and could explain the early power loss.

 

Do you like Granada's with 'one-off' wheels!!???????

 

No.................and theres a place for big writing and stupid comments.........the muppet room so piss off there.

 

change the plugs & make sure they are correctly gapped, sounds like the boost pressure is blowing the spark out.
if they are found to be ok then check the dizzy, coil & leads

 

SAFECHAV said to me .....

"No.................and theres a place for big writing and stupid comments.........the muppet room so piss off there."

oohhhhhhhhhhhhhhh

 

Glad you liked it