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[maracus]

mapped up to (only) 1 bar boost. Apparently anything after that and it was starting to misfire. The guy left the rolling road and put a new coil on and seems to think that would cure it but never went back for another remap. I wonder wether the standard ign. System is simply not up for 300 + brake at >1bar, or if there's an underlying issue elsewhere. Will compression test upon viewing, what else do I need to look for?

Also it's been built up with mahle pistons, rods etc, when this is the case can I expect another 100k+ miles or are tolerances/wear just so that I'll be rebuilding it every 15k miles?

Ta 

[maracus]

Sorry peeps only half a post, stupid iPhone!  But I think u get the idea??

[twiglet]

As an ex cavvy turbo owner, I'd be curious to see the car you're thinking of buying...

Don't worry, I'm not after a modified one myself.  I'd love to find a mint standard one though!! 

[Kevin Wood]

It's all down to who built it and how well, rather than what bits went into it. 

Running 300 BHP rather than 200 BHP is going to take its' toll if the extra power is used regularly but no reason why it shouldn't be a reliable daily driver if it's only abused for the occasional spurt.

Also depends how well coolant and oil temperatures are being controlled.

Could well be that the ignition system was starting to misbehave. If going higher boost I would be fitting an aftermarket mappable ECU and wasted spark or even coil-per-plug ignition setup, I think.

Then again, 300 BHP is enough in a cav, surely?

Kevin

[maracus]

It has aftermarket management standalone ecu greddy I think was said lol it's not something I'm too clued up about, but can't understand do all that but rely on O.E. Coil???

It was done by a 'local engineering firm' near him and has receipts I'll try to find out what co
Company 

[Martin_1962]

It's all down to who built it and how well, rather than what bits went into it. 

Running 300 BHP rather than 200 BHP is going to take its' toll if the extra power is used regularly but no reason why it shouldn't be a reliable daily driver if it's only abused for the occasional spurt.

Also depends how well coolant and oil temperatures are being controlled.

Could well be that the ignition system was starting to misbehave. If going higher boost I would be fitting an aftermarket mappable ECU and wasted spark or even coil-per-plug ignition setup, I think.

Then again, 300 BHP is enough in a cav, surely?

Kevin

They are 4wd and have a Carlton rear axle.

And remember there is a 377bhp Carlton.

[twiglet]

It's all down to who built it and how well, rather than what bits went into it. 

Running 300 BHP rather than 200 BHP is going to take its' toll if the extra power is used regularly but no reason why it shouldn't be a reliable daily driver if it's only abused for the occasional spurt.

Also depends how well coolant and oil temperatures are being controlled.

Could well be that the ignition system was starting to misbehave. If going higher boost I would be fitting an aftermarket mappable ECU and wasted spark or even coil-per-plug ignition setup, I think.

Then again, 300 BHP is enough in a cav, surely?

Kevin

They are 4wd and have a Carlton rear axle.

And remember there is a 377bhp Carlton.

I thought the cavvy turbo shared it's floor pan and running gear with the calibra turbo, not the carlton?  :-/

[Lazydocker]

It's all down to who built it and how well, rather than what bits went into it. 

Running 300 BHP rather than 200 BHP is going to take its' toll if the extra power is used regularly but no reason why it shouldn't be a reliable daily driver if it's only abused for the occasional spurt.

Also depends how well coolant and oil temperatures are being controlled.

Could well be that the ignition system was starting to misbehave. If going higher boost I would be fitting an aftermarket mappable ECU and wasted spark or even coil-per-plug ignition setup, I think.

Then again, 300 BHP is enough in a cav, surely?

Kevin

They are 4wd and have a Carlton rear axle.

And remember there is a 377bhp Carlton.

But the carlton weighs a bit more 

[Martin_1962]

It's all down to who built it and how well, rather than what bits went into it. 

Running 300 BHP rather than 200 BHP is going to take its' toll if the extra power is used regularly but no reason why it shouldn't be a reliable daily driver if it's only abused for the occasional spurt.

Also depends how well coolant and oil temperatures are being controlled.

Could well be that the ignition system was starting to misbehave. If going higher boost I would be fitting an aftermarket mappable ECU and wasted spark or even coil-per-plug ignition setup, I think.

Then again, 300 BHP is enough in a cav, surely?

Kevin

They are 4wd and have a Carlton rear axle.

And remember there is a 377bhp Carlton.

I thought the cavvy turbo shared it's floor pan and running gear with the calibra turbo, not the carlton?  :-/

It does but they both use Carlton rear axles for the 4wd models

[twiglet]

It's all down to who built it and how well, rather than what bits went into it. 

Running 300 BHP rather than 200 BHP is going to take its' toll if the extra power is used regularly but no reason why it shouldn't be a reliable daily driver if it's only abused for the occasional spurt.

Also depends how well coolant and oil temperatures are being controlled.

Could well be that the ignition system was starting to misbehave. If going higher boost I would be fitting an aftermarket mappable ECU and wasted spark or even coil-per-plug ignition setup, I think.

Then again, 300 BHP is enough in a cav, surely?

Kevin

They are 4wd and have a Carlton rear axle.

And remember there is a 377bhp Carlton.

I thought the cavvy turbo shared it's floor pan and running gear with the calibra turbo, not the carlton?  :-/

It does but they both use Carlton rear axles for the 4wd models

I learn something everyday! I assume that it's slightly shorter on the cavvy, as it isn't quite as wide? Or is the difference made up in the hubs, wheels etc?

[maracus]

think a Carlton diff, but it is the same as the v8 commodores I seem to remember???
 Can't remember where I heard that tho

[maracus]

think a Carlton diff, but it is the same as the v8 commodores I seem to remember???
 Can't remember where I heard that tho

Should of started 'i don't think'. Stupid fine again lol! Think I'll just wait til I get near a P.C. 

[2woody]

ok, there's two Cavalier floorpans...

"standard" front-drive floorpan for all the "cooking" models. Maccy strut front suspension, twist-beam rear suspension.

and a "deluxe" floorpan, modified at the rear for semi-trailing arms borrowed from Omega A (Carlton). Fitted to Cavalier GSi2000, Cavalier 4wd, Cavalier turbo & Calibra. 4WD cars have Omega A rear diff and a front transfer box made out of chocolate.

Lotus Carlton uses a close-to-standard Omega A floorpan. 377BHP straight six

Commodore uses widened Omega A floorpan with a proper engine.

regarding this particular car, I'd be tempted to go back to original spec and start again from there. GReddy is piggy-back controller, not the vastly superion stand-alone type.

[maracus]

ok, there's two Cavalier floorpans...

"standard" front-drive floorpan for all the "cooking" models. Maccy strut front suspension, twist-beam rear suspension.

and a "deluxe" floorpan, modified at the rear for semi-trailing arms borrowed from Omega A (Carlton). Fitted to Cavalier GSi2000, Cavalier 4wd, Cavalier turbo & Calibra. 4WD cars have Omega A rear diff and a front transfer box made out of chocolate.

Lotus Carlton uses a close-to-standard Omega A floorpan. 377BHP straight six

Commodore uses widened Omega A floorpan with a proper engine.

[media]regarding this particular car, I'd be tempted to go back to original spec and start again from there. GReddy is piggy-back controller, not the vastly superion stand-alone type.

[/media]

The story is that the engine is all good for upto 1.5bar and around the 350 bhp mark, I'm guessing it's good for that with what management related bits it has, currently only1bar and shy of 300 brake coz of a misfire after 1 bar. I think it's down to the standard ignition system. My current turbo iis nearly standard and tbh the coil and dizzy system is only just good enough for that,    needs better setup on that front I think.

I'd be happy with the quoted 250brake at the hubs but might be tempted to get it mapped up to nearer the 1.5 bar it can supposedly take. No more.

So why would I want to go full standalone when what it's got is sufficient? :-?

Or could the misfire after 1bar be down to this?

[999gsi]

i would love a cavalier turbo,but most have been chavved,id buy it and then return it to bog standard vauxhall spec,people want standard spec cars like this and they make good money...