help

[jonna]

had my car rolling roaded last week end only to find it only ran 175 bhp car is my zr turbo fitted with a t28 front mount 2.5" exhaust only one problem they never ran it with afr readings any one come accross this befor thanks jonna

ahhh a forgot to put on that on the graph it showes it gose flat at 3000ish to 4000 ish

[mike88]

wheel or fly?

[jonna]

fly mate

vid from the day http://www.youtube.com/watch?v=Mjs9qWCl ... ure=relmfu

[Punx0r]

Make sure it's properly serviced
Check boost is 12psi
Check cam timing

[jonna]

running 13psi at inlet was serviced less than 5k ago with new timing belt i think it could be fuel related ?

[pengy_666]

was it my eyes or was the wheels moving around in the arch?

(obviously they are spinning round)

[jonna]

not just yours mate a thaught that 2 but had the car jacked up since and nothink moveing

[pengy_666]

yeah but you slam it hard with a engine and you'll move it. not by hand though.

[jonna]

all the vids look the same so duno

[Punx0r]

Did the service include the ignition components and fuel filter?

[jonna]

yeh it had plugs fuel filter engine flush new ht leads when i converted to wasted spark

[zrchris]

This may sound dast as f**k but the montego engine..am i rite in thinking that was a t16 with 150bhp ? Thers no way it could have been that set up is there ?

[jonna]

its out a 620ti mate and use to be adam with the tf v tecs engine so as far as i no it should be 200+ was it wasted spark the montego engines ?

[Pinkie15]

I can never remember, but Montego engine was an O or M series turbo. Would've been on a dizzy, not WS.

You haven't got a duff coil pack have you ? Sorry unsure how you check it though.

[Punx0r]

Montego was O-series

[jonna]

not that i no of the car pulls like a train on the road so a duno

[british beef]

Could the intercooler pipe work being 2.5 inch have an effect

[jonna]

intercooler pipe work is only 2" with 2.5" intercooler inlet/outlet

[british beef]

My bad got your car confused with another one.

There has been a few mg Zr turbo with poor bhp it's a puzzle

[Pinkie15]

Out of interest, who did the conversion, yourself or garage ?

[E_T_V]

a graph would help. boost leak?

[pengy_666]

I would be gutted if I had a conversion and only pulled that, I imagine you may struggle to lose a 160 with the extra 70 kg's from the T series block over a k series.

I hope you source the fault though.

[harland292]

running 13psi at inlet was serviced less than 5k ago with new timing belt i think it could be fuel related ?

If the timings out, retarded 2/3 teeth its going to cause huge fueling issues...

This was my problem
Oh and it was checked by 2 companies and a guy of here and they said it wsa fine, So check check and check again..

Lock the crank too..
As once i thought it was set up and right of the pulley marks, then rechecked a month later with the crank locked i was still a tooth out

[o0o0oo000o]

Last week i just put my Coupe on the dyno with my M/O combo engine in it (which had still only covered 550 km's) and that pulled 121 Kw at the front hubs.

Thats with a Gti-R T28 , Fmic with 2.5" piping and with standard exhaust and cat , The boost peaked at 12.6 psi then dropped to 10.5 - 11.5 PSI

The car is running FAR too rich as you can see my A/F is at 10.57 towards the red line

This is what my graph looked like

[Punx0r]

Around 10:1 is apparently normal on MEMS

121Kw = ~163HP, which would be 190-200HP at the flywheel depending on transmission loss.

Considering you're not achieving 12psi at peak power that seems ok to me

What's your CR btw?

[o0o0oo000o]

Im not quite sure on what my C/R is because I didn't have enough time to test heads cc's , But the head had a light skim (I think the first ever), the block had 0.25" Thou off and the O pistons were kept the same just de-coked.

I'll check next time it blows a HG or when I next take the head off , Which hopefully won't be anytime soon.

Can't wait to stick 18 - 20 PSI though it especially with my headers,down pipe and full 3" exhaust (when I finally have time to put it all together)

[jonna]

yeh i built the car my self with help from my bro who also has a r25 turbo and some help from ross on hear and as i sey my car has a t28gt got it off a lad on hear new in the box i will tryand get the graph up just i dont have a scanner

[harland292]

yeh i built the car my self with help from my bro who also has a r25 turbo and some help from ross on hear and as i sey my car has a t28gt got it off a lad on hear new in the box i will tryand get the graph up just i dont have a scanner

Take a picture on your phone mate