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the one that was done at 210k )and Jiimbo might be able to describe his own 200k+ one too) The wear around the crank was fine just requiring shells, but the rings had worn a fair bit and slightly unevenly which meant the piston itsself had started to touch slightly (remeber the williams has oversized pistons from the 16v in the same bore, 0.7mm i think, anyway and obviously at this point it changes from a simple re-build to a re-bore with new pistons which is alot more money!
Prevention at this stage!
all the tools required are available at halfords. piston ring compressor is 4quid, etc.
if ur getting bore wear, i.e. more than a thumb nails depth, get rehoned. u could go for a rebore, but 83mm wide pistons r custom spec stuff and cost an arm and a leg.
give it a rehone, professionally or with a 3 pronged glaze buster. i did it myself with 400grit emery cloth and wd40 - brushed up the bores no probs.
fit new rings at least. i couldnt get any rings from renault, they sed they dont sell em anymore. so i had to get a set from belgium through a local motorfactors. cost me 90quid inc vat and delivery. new bearings cost about 70quid all in.
rebuilding the cylinder block is a nights work once everythign is cleaned and prepared. i rebuilt my 2litre lump in my back garden on a black n decker work mate. keep evertyhing clean, keep it all lubed, and its easy peasy. way easier than building up a cylinder head. also why ur at it, fit a new oil pump as a matter of course and replace all the seals. once its all sorted ul have an engine thatl pull 16bar (230psi) on the compression tester - good by any1s standards.
jimbo
Jimbo thats exactly what im looking to do, I have a mate lined for the the head work as i that is more of an art then a science and i havnt got the time or money for trail end error learning.
for what im planning to do Im purely intrested in the bottom end re-build, like you say oil pump, pistons rings, and shells.
Its more restoration then modification, the engine is at 109k now but i havnt had it long enough to moniter oil consumption and that will decide what i do.
Still got that nagging doubt in my mind as to how well suited the stage 2 Hill power chip will be? This si what your running isnt it Jimbo?
the implications of it running lean would be catistrophic but whats the chances of this happening by fitting a poorly matched chip?
you can also buy all that via GDI (me!) at club rates as well....
we do our best to look after club members, so if you do need anything inc engineering work please let me know.... email is best.
mailto:andy@greydevilindustries.com">andy@greydevilindustries.com
Andy
GDI
i used low grade emery cloth working in a diagonal fashion up and down the bores. working in two directions i achieved a cross hatched pattern. there was minimal wear on the bores, no ridge at the top. all i did was a glaze bust.
the engine produced 230psi on all 4 pots on the compression tester 800miles after the rebuild. this is higher than my old 145k 1.8 (av 180psi) and a 50k hill power 2litre (220psi).
the rings have bedded in nicely, pulls like a train and doesnt use a drop of oil.
4k miles on, and im getting 35mpg on a run and the emissions r spot on. not bad for a diy rebuild.
jimbo
a really good web site with lots of detail on rebuilding an williams engine
http://clio.m-fix.co.uk/http://clio.m-fix.co.uk/
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