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makes me want to take the focus in for a checkup

must be able to feel that small flat spot of lag gone now?

eurch! blue lights! so 90's ;) looks good other than that though! 600 bhp is good going!

respect the effort of the guy but hes positively obnoxious. highly annoying

http://www.detailingworld.co.uk/forum/showthread.php?t=81391 did you even try google? lol

lol just noticed the OP's name! perhaps its his brother that has signed up after all? what car is it? engine should be cheap enough (car dependant) changing it is a couple of hundred £

i knew it had the potential to do it, im not complaining about the products its still epic. but whereas you can get away with polishing in the sun although its not recommended you cant get away with using hydro2. so IMO a warning on the bottle would be a good idea. some (like me) will chance it...

I didn't blame the product I said it should realistically come with a warning on the bottle. something as simple as "avoid using in direct sunlight" would do the trick

Yeah I just had the same. Was less than 1 min between me starting bumper and bonnet and me getting my PW on it and it left spray marks all over it. I was fuming lol. sorted now though

150 is at the top end of normal iirc? Hydro2 should really come with an application warning. Just applied it on my bonnet and bumper and it had etched Into them before I had time to reach for my PW (it was right next to me)

but tis still capable or a relatively reliable 300

And the f7 is less reliable because?

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...