Hi all,

I've in the past built ford pinto engines, little tricks like skimming the head to increase compression and a bit of porting are known to work on a standard engine... After that, larger valves and a lairy cam and on from there.

That said, It seems i need to replace the top of my tapping gti6 engine.

Are there any quick power gains to be had during this process for little cost? Not really planning on ploughing a lot of money in to this car if I can help it!

I've found a good head for £80 posted to me. Gasket and head bolt sets seem to be around £110 ish

So, is there anything else I can do to gain power?

And, is there anything i need to do, to complete the replacement of the head properly? I guess a skim is required?

Thanks!

Jon

This is what rich told when I enquired. 16 new valves- New valve stem oil seals- All 16 seats are re-cut on a SERDI machine at 3 angles.- All valve guides are replaced or K-Lined- The head is then de-coked and glass bead blasted- The head is skimmed too

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Team Peugeot Sport 308 Gti�

Black T'99 Gti - may she rest in peace - written off in a shunt on the A329m

Thanks.

So, what is my bet route, should I just remove my head, have it chcked and replace whatever valve is slightly bent.

or buy a 'good' head from a long standing member on here?

Or, spend £350 on a good head from someone that has done everything to it?

I'm a bit miffed as it's about a 1/4 of the value of the car...

So by rebuilding my head, I will go from 170bhp to 5bhp? :-/.

Or do you mean, to gain 5bhp I would need to spend £1000+? I'll assume the later.

Thanks,

Just wanted to check this, don't want to miss any quick tricks like a head skim which could be done during the process for little cost

Maybe this is a good option?
http://www.306gti6.com/forum/showthread.php?id=156411&page=last

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Ex- Phase 3 China GTi-6 T-Reg

The age/mileage on a secondhand head now means it is false economy to fit it without a freshen up/checking over

I picked up a second hand one to get rebuilt for mine, all valves were straight but it required new valve guides on the exhaust side due to wear.
Cost under £200 iirc for skim, pressure test, fit new guides, reseat valves, new stem seals, decoke

Read up on timing the engne up before you refit the head, lots of people get nice rebuilt heads then damage valves when timing up the cams

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Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........

Mac1 ZR R1 kit car build in progress.

What is the method Stan? Ive always fancied having a go at this job.

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Team Peugeot Sport 308 Gti�

Black T'99 Gti - may she rest in peace - written off in a shunt on the A329m

My exact method If the hole doesn't line up on the pulley when the cam pulleys are pinned it's obvious that the crank pulley has slipped within the rubber. I'd have thought other novices like me would work that out by just looking while turning it over.

I'd imagine the problems come from when people just turn the crank pulley until they can put a pin to the top and then they slacken the tensioners or remove the pulley and put the slipped one back in by turning it to line up when they put it back on. I would find it hard to believe anyone could make that error - Surely you'd have to be a retard to turn them independantly when you originally noticed it didn't all line up.

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Senior Test Automation Engineer for the 306GTi6 Owners Club Forum

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