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300 is the target figure ish.... and theres a teson I've done the vag box conversion and stuff too.

Depends what you call big power?

i take it you need an apple computer to do this?

this! how many people do you come across who wince when you say you drive a renault? s**t cars iirc.

no chance, its still a renault

It seems engines just aren't my thing.

I understand it's not ideal but it's not the end if the world. I'd be taking hardly anything off. i don't really see another option unless I learn how to s**t money tbh

Syringe it is then

Ok so how do I get these figures? Piston figures I imagine come with the pistons? How do I check the cc of the head?

Is it essential?

I don't have those figures

No history of overheating mate. Your ignition ion timing idea would sit well tbh as my crank sensor isn't the most secure and any movement could cause advanced ignition, plus with no knock sensor the ecu wouldn't know to pull it back. I'm going to get my injectors checked, new block, new...

It was sent to a specialist for porting and polishing it was skimmed as a matter of course to ensure it was entirely flat

I was gong to get it skimmed. Take the absolute minimum off it as it's been done before. I don't know any requirements about hardness testing you saying that is the first time anyone has mentioned it. I suppose I could look into that. I really don't want to scrap this head as it's had a lot of...

The head is being re-used. I've got a new block coming. I'll order some pistons (don't know where you're finding them for £400 though) the rest as you say is fine. I'm just apprehensive about spending again because there's no definitive answer to how this happened

They are oversized so can they not be turned down to standard size? Or does that offer other problems? Ive be pretty much resigned myself to buying new pistons anyway I'm just wondering

Your right the rings look (to the naked eye at least) perfect. do you concur that these pistons are dead? Or do you think they can be saved?

Thanks for your input chip. If it helps I've always smelt fuel when it's been running and the oil in the pan has always looked slightly contaminated when I've taken the sump off (I put this down to a lifter issue I had when I was first trying to start it) another explanation I thought of was...

That's the explanation I came up with. But was it the standard injectors used to run the engine in or my new ones? how can I check my wiring?

When it was run for 800 miles it was just swapped into another car. So basically a low comp standard engine. It was just done to run it in. The he only time it's seen anything from the turbo was a quick blip of the throttle when I started it the other day. I'm not talking bouncing it off the...

Yes

I'm not bringing mapping into it a minute. It done 7-800 miles on the standard Renault map with standard injectors. Then it's been run for a few mins here and there on a base map and brand new Siemens injectors

It has done 7-800 miles on some old injectors that I don't know if they were good or not. The rest has been starting if up for a min or 2 with brand new Siemens deca injectors. Those 1-2 mins were barely enough to get it to overheat

I'm up for that dan. If there's nothing that can be done for these... I've got a new block on it's way so I have everything apart from gaskets required to build the engine back up then (minus the machining)

any more info? was that just a guess?

does anyone care to offer a possible explanation for this? gonna get my injectors checked just in case for the detonation, but the pickup on the block and piston skirts is worrying me now. Det by JaffmanRS, on Flickr Det by JaffmanRS, on Flickr Det by JaffmanRS, on Flickr Det by JaffmanRS, on...

ballers have semi-detached houses or above with detached garages with enough room to detail and mechanic around with 1 or more cars ;)

ballers do it in a garage ;)

Theres a 2.0 ecoboost in America that's up to 400bhp on standard internals. I could well bilieve 350 in the 1.6. Although it's pushing believability a bit

Kick the misses out, normally stops the moaning