pierburg conversion

[michael tierney]

finally got the pinking sorted(timing sensor)and the fueling(still a tiny bit rich at top end)got the car on the rolling road and got a decent result....159bhp with 171 lf ft with 16psi manifold pressure,martin the tester said there was more in it! but i did'nt have a bleed valve to increase it.pleased enough at result...standard origional engine ect!:)

[Tony Walker]

:D good result :D why was your sensor making it pink? advanced alot?

[michael tierney]

it was factory set....back in the day when lead made all the difference!!:(

[Tony Walker]

sensor had been adjusted by renault then?

[michael tierney]

no! no adjustment on it....it always pinked(got progressively worse like the petrol RON) but i never drove the shat out of it anyway!

[Tony Walker]

shouldnt really be pinking at 16psi with std timing and running a bit rich?
Id check piping to aei and aei diaphragm? maybe wrong aei?

[michael tierney]

i think its a 209? i know i changed it because of some other problem and it was the same model!....but even before i did it was still pinking slightly....if u come accross a pump here saying 95ron u'll be lucky...i last filled it with 91ron,the tester also agreed that the quality of petrol had plumitedover here!

[Tony Walker]

ah right, 91 is pretty low, not sure what it usually is round here tho? 95 maybe? im sure someone will kno.

[Brigsy]

Which carb have you used?? Does it have boost enrichment?

[dave_gtt]

All 95ron petrol in Ireland has 5% bio-ethanol in it now which can cause cars to run lean. It's pure water over here my car pinks at anything over 12psi or there abouts with a t25!!

Really need to sort out an afr meter for myself.

[dave_gtt]

BTW Michael was that Westward in Enfield you went to, ive been meaning to stick my gtt on rollers for a long time. Just wondering how you found the operators over here?:agree:

[michael tierney]

martin there is very good,dave,good dyno ect....i would recommend u sort any pinking probs before u go on a rolling road!! i might be there again soon with other carbs.....the 2e3 of an astra is what i used but i also have a smaller one from a polo 24/28throttles. and i have one off a t4vw...which has 24/26 venturis!!depends on time really:)
brigsy! it has a power valve where i grafted a dis enricher to it!

[Brigsy]

Fair do's mate!! Sounds pretty good, get some pics up:)

[michael tierney]

only pic i have left is on my profile...all others have disappeared!...u can see the fuel enrich bit!

[Tony Walker]

Sounds great, almost tempted to post you some proper fuel over se what you could acheive with that :cooter:

[michael tierney]

just made up a pressuriser for the floats and they're good for 20psi....i actually went to 26psi with out any probs....so i'll do a bit more development on them:)