m_nettleship

30psi, on greens is running extremely close. injecter limits.

hope ur feul pump doesent suffer a slight hicup. also 30psi on greens,, ur misfire will be coursed bye the spark been blown out probly, take the boost down to peak at 26psi, seen how ur misfire is then. all im gonna say is, i had the same prob spiking at 28psi. Thats witl all the leads,gaps on plugs set good, all uprated leads, group A coil. all new roter cap and arm. But really it needed a coil pack from stu. Spiked at 26 psi on greens 332bhp 368l/bs. The feul line on 28psi was just on the lean side tooo!!!! i can show u the graphs,

Karl

m nettleship,

You really should'nt make comments about things you clearly no nothing about.

Running 30psi as a brief spike is no problem on greens. In fact theres just about enough fuel on std injectors to peak 30psi in the midrange.

I have a huge amount of experience mapping cossies so to suggest I may have left it running lean is rediculous!

T34's are a little hit and miss for failures. Some go on for years peaking at 30 psi whilst others can fail fairly quickly. The biggest killer of T34's is trying to get the turbo to hold over 25 psi at high rpm, as this always kills a T34 VERY quickly.

m_nettleship

never said it was running lean Karl, Just said it must be running very close. Like my sapph did wen run in the gunship conversion on yellows, then on greens spiked at 1.7 bar. at about 3400rpm.

The feul line on the graph was just a bit on the lean side. ill show u the graphs if u want.

also i think the misfire prob wud prob go away if turned down a little too.

reisskahn

It was boosting/running fine without no problems for like 3-4 months after the remap only started miss-firing/arsing around as soon as it went onto Nobles Rollers. But as soon as i get the turbo sorted ill just take it back to Karl to sort it out.

Ill keep you all updated and on the outcome of the turbo....

Turbo Zetec

iTrader: (1)

who did you get the turbo from? PM me if you like...

fuzzy

personal experience. 3 different recons ive had. none lasted more than a few months. bought brand new for Ł700 and still going strong 18 months later.

m_nettleship

1 recon 2 years ok. standard t3 on 27psi.

reisskahn

I got it from a Guy up in Scotland. He was breaking a cossy on ebay at the time so i got chatting to him and he had one which he said he bought for like nearly Ł900 from Universal Turbo's iirc and only did around 1000miles on it. Said it was in storage for the last 4 years.

He sounded/was genuine enough and i told him ill be getting my cossy mapped by NMS as soon as the turbo goes on. He said yeh if theres anything wrong with it as soon as ive put it on he'll guarantee it which was fair enough for a 2nd hand turbo...

Like i mentioned before managed to do 2000miles on without a problem but now

m_nettleship

u are still asking 4 trouble with 30psi on greens.

Karl

Why is he asking for trouble with 30 psi on greens?

The issue with his turbo failure is nothing to do with the injectors. T34 turbos can fail when running 30psi, and this has nothing to do with the fact he is running greens.

Turbosystems

iTrader: (5)

evening karl

NEWTON

my mate ran his cossie on 30 psi on greens with no probs at all

Karl

LOL evening tony. Its a bit late to be up drinking tea is'nt it?

Actually just to add for those who may be reading, the car in question on this post simply peaks at near 30 psi before being mapped to tail to 22psi at higher rpms. (I don't want folk to think its ok to hold 30psi on greens as this is beyond the flow rate of greens at high rpm)

Chip

iTrader: (3)

Karl, have you just popped on to talk to the retards for a while to make you realise how good your life is when not on a forum talking to people who dont understand anything about injectors?

Looks like hard work so far, but fair play to you for sticking with it, lol

Chip

iTrader: (3)

PS

32psi peak on greens here, no bother.

Shings

Ahhh fuck it, if uncle Tony can say Hi..



Hi Karl...

Must pop over sometime soon, end of uni season so I have exams to get out the way... I'll buzz you in a week or so.. if you could arrange a pass out with the tea lady... oh and I'll bring the Transformers DVD I promised..

Jake

Turbosystems

iTrader: (5)

i disagree with you karl greens are fine for 32 psi all the way up the rpm range as long as you are running 8 of them

Karl

Chip,

Yes it is rather like sticking pins in your eyes trying to educate folk on here. LOL

That said I'm actually on here to read the Nurburgring thread to see how everyone got on, as I hav'ent been into work since last week, so thought I'd catch up on the trip.

Karl

Hi Jake, yes thats fine mate give me a call soon.............

Tony..........apparently the problem for turbo failure is the green injector, so 4 or 8 you're still in trouble.............Think 8 X 1000cc injectors might be just about man enough for a 30psi peak on a T34?

reisskahn

Karl if oil starvation aint the cause for the turbo's failure and it turns out just to be my bad luck/one of those things that it died, would you recommend i get a new unit or will a full recon one do it to the run the same spec/boost you mapped it at?

If so is it just a 360 bearing that i should be after in the upgrade like?

cheers

reiss

Karl

We only use turbo technics for our turbos, and allthough classed as a rebuilt turbo, they actually feature new turbine wheels and shafts, new exhaust housings, bearings, etc. The only parts re-used are items like the compressor housings which are rarely prone to problems.

Many so call re-cons used old turbine wheels that have been blasted to look new, and hence un-suprisingly fail quite early.

Hence I would advise you buy your replacement from turbo technics, or you can order one via ourselves at the same cost to you.

RWD_cossie_wil

iTrader: (9)

I would say the cause of the turbo failure is the incorrect torque on the rear light mounting nuts ( well it's about as close as greens causing the failure )

reisskahn

RWD_cossie_wil: I was going to call you on Saturday then to pop over and check it out but went go-karting + the weather was too nice to be arsing around with it

RWD_cossie_wil

iTrader: (9)

fair one

m_nettleship

Karl, wen u come on boost, and the lamba reads 0.9. would you say that lean, border line or rich?

CossieRich

iTrader: (1)

my t34 has done 15k at 1.7 bar and 2k at 2.5 bar peak and its still ok. Where you lot getting your turbos from: Blue Peter. Heres one i made earlier out of plasticine

Chip

iTrader: (3)

How much boost?

Thats richer than stoich, but leaner than you would map a car for at peak boost.

m_nettleship

27psi. 30psi, is to mutch 4 greens, weather its lean or just ok, and lets face it, it will only be just ok, not enough feul to keep em cool enough.

more feul, cooler pistons, cooler pistons means cooler zorst gases. Ie cooler Turbo.

Chip

iTrader: (3)

30psi at what rpm mate?

You do realise that YELLOWS can manage to **OVERFUEL** 30psi lower in the rev range when the induction stroke timebase is longer?

C4llyT

Was waiting for that

RWD_cossie_wil

iTrader: (9)

What the fuck? I suppose RS 500's are 500BHP as well then? ...

Fuel cooling is vastly over-exaggerated...., you can run much more boost at 3500Rpm as you get twice as long for the injector to fuel than you do at 7000 Rpm, so in effect it only matters what injectors you run if you are running out of duty cycle at the top end.

m_nettleship

Karl

m nettleship,

I usually run greens about lambda 0.84 in the midrange when peaking at around 28psi, richening to lambda 0.82 at high rpm, where the boost will also be mapped to tail back to around 22psi.

If you have a car mapped by myself that is running lambda 0.90 at 27psi then you have problems with your car/ecu/electronics/TPS/fuel system etc, and should have the fault investigated, as it will not have left me running that way.

m_nettleship

not the fact there not enough feul then?

Anyway Karl, all am saying is 30psi on greens is asking 4 trouble. and he got it. plus he running nearly standard ignition too.

anyways have a good day.

Stu @ M Developments

iTrader: (12)

Karl and I are both obviously idiots then, as many of my greens conversions run 30 midrange, including ALL my Escos P8 ones.

m_nettleship

are they all running standard ingnition?? stu?

I new wat reisskahn was running i seen it on the dyno, 4 his car 30psi is to mutch.

Karl

m nettleship,

I really am struggling to work out whether or not you are purposfully trying to be difficult or whether you are making your own incorrect assumptions..

Let me say once more and PLEASE LISTEN TO ME!

It is fine to run 30psi midrange on greens provided it is mapped correctly to do so. It is not boarder line in anyway. For example there is enough fuel available from greens midrange to run as rich as lambda 0.75 if you so desire. However all cars mapped by myself will leave me running around lamba 0.84 midrange. If you have seen a car mapped by myself do differently on a rolling road, then either the car is running with faults OR the rolling road equipment is giving incorrect readings.

RWD_cossie_wil

iTrader: (9)

There is an old saying " Don't argue with idiots...."

Stu @ M Developments

iTrader: (12)

Yes, 0.60 - 0.65mm will be fine on the gaps.

DazC

iTrader: (1)

I am one of the people who cannot see an issue at all with 30psi on greens!