Big missfire

sideshow bob · February 18, 2008, 06:45:25 PM

sounds exactly the same as mine mate, and its not long blown a rotor tip! do you find it struggles at low revs to pick up but clears past 3-4k? i hope you find its only something basic, but you may need to prepare for the worst man

shaunwil · February 18, 2008, 07:09:00 PM

What state is the fuel filter in ?? Did you change it when you did the rebuild ?

Just a daft thought (of which i have many) could the vac sensor popped off under boost ? Would run very lumpy if all its seeing is atmosphere ?

How can you run non sequential on more boost, an air filter and exhaust on a stock ecu. Seriously asking for trouble.

Shaun

interloper393 · February 18, 2008, 07:32:42 PM

is the max safe boost on twins not 0.9 bar?

BlitzBoy · February 18, 2008, 07:41:44 PM

0.9 BAR on Stock ECU!!!!!!
0.7 BAR is the limit on stock ECU, no wonder it has popped, 0.75 BAR is the absolute limit that the stock ECU can supply the correct fuel and with the air filter and exhaust the limit is even lower boost level like 0.65.
Who built the engone and said 0.9 BAR was safe on a stock ECU?

Carl · February 18, 2008, 08:09:33 PM

Hi Dean,
Give me a call.
Regards
Carl

Carl · February 18, 2008, 08:33:50 PM

Quote from: BlitzBoy0.9 BAR on Stock ECU!!!!!!
0.7 BAR is the limit on stock ECU, no wonder it has popped, 0.75 BAR is the absolute limit that the stock ECU can supply the correct fuel and with the air filter and exhaust the limit is even lower boost level like 0.65.
Who built the engone and said 0.9 BAR was safe on a stock ECU?

Hi Mark,
I rebuilt the engine after Dean had already rebuilt it and it did not run quite right, with supplied parts from Dean.
We did not suggest to Dean that it would be ok to run 0.9 bar boost on a stock ecu. Due to the clutch slippage it was not possible to see what boost the car was making after it was run in,so when we told Dean that the car needed a new clutch(After already suggesting that during the build) we then said that after he fitted the clutch that we should check out the car further to see what boost it was running,obviously Deans clutch fitter has been driving the car hard when he shouldn\'t have.
Regards
Carl

skybusr34 · February 18, 2008, 08:41:38 PM

sounds like a case of "sue the clutch fitter"!!!! and tip going to me too. soory bud

slightly off topic. does any of the ecu manufacturers do a valet mode tostop going past 3k or something

BlitzBoy · February 18, 2008, 08:44:46 PM

no worries Carl I didnt think it could be right that someone suggested it was safe at 0.9 BAR. Looks like Dean should be giving the clutch fitter an earful for ragging it when its supposed to running in

Carl · February 18, 2008, 08:48:10 PM

Quote from: BlitzBoyno worries Carl I didnt think it could be right that someone suggested it was safe at 0.9 BAR. Looks like Dean should be giving the clutch fitter an earful for ragging it when its supposed to running in

No probs Mark,
Dean had actually already run the engine in,but after bringing it back to us for a few other jobs and checkover,we were trying to see how she was running,but couldn\'t cos of the clutch slip.
Only after clutch was replaced would it have been possible to check boost level properly.
We have suggested that with a power FC 0.9 to 1 bar would have been fine.
Regards
Carl

interloper393 · February 18, 2008, 09:03:49 PM

well after seeing it`s down to the clutch fitter, was it done at a proper garage or a diy home effort? i`v have bent him in 2 with a crowbar by now if he ragged the crap out of my car when it was in for work... no need for it.. really hope you can get this sorted bud..

deanflowers · February 19, 2008, 08:22:01 AM

Carl i will give you a call later today.

shaunwil Fuel filter was not changed so this is possible

It was mate of mine i grew up with who has worked on almost all my cars over the years including quite a few high performance ones. He should really have known better. He runss a garage but did it after hours.

Iam pretty sure this car has some kind of gypsy curse on it.

RemarkLima · February 19, 2008, 08:33:09 AM

Quote from: deanflowersIt was mate of mine i grew up with who has worked on almost all my cars over the years including quite a few high performance ones. He should really have known better. He runss a garage but did it after hours.

But this would mean he should have some kind of insurance against this thing right? So new motor would all be paid for by him / insurance?

Hope it\'s not a tip tho\'!

deanflowers · February 19, 2008, 08:42:46 AM

Not really as he doesn\'t own the garage, just runs it and it wasnt exactly done through the books.

Red and Single · February 19, 2008, 12:16:22 PM

So you have a motor that due to a slipping clutch has never seen full boost, you don\'t know what boost it will pull.

You have a new clutch fitted by your friend, he gives it some beans and bang it goes pop.

To be fair to him, if he was not aware of the situation and if you failed to instruct him NOT to give it any beans, then you are to blame in my eyes...

If it were my car, I\'d have told him to be really gentle with her. ?? ?? ?? ??

shaunwil · February 19, 2008, 12:56:51 PM

There are a million and one ways that could have caused it but having the Stock ECU on the mods you had was the issue. It will have run lean because the flow in and out was not as restrictive.

Shaun

Big missfire

sideshow bob