i've taken the Xe out of my calibra and will be attempting to put it into my corsa in a few weeks.
while the engine was out, i was wondering if it were worth getting any headwork done.
the engine is '90 with 93k miles on it. has been running pretty well.
i'm on a limited budget, so not going the whole hog, but wondered about a port/polish, and possibly a little extra if you guys think it's worth while (and it's not too dear)
basically i'm just after a rough guide of what else can be done on a budget, how much to expect to pay for certain work, and if anyone knows somewhere local to High Wycombe(J4 M40) who can do good work for a reasonable price.
with budgit in mind this is what id do,grind the valves in(re seat) change the valve stem oil seals as it has done 90+k and they will probably fail soon £50-80 and get the head skimmed aprox £42,dont bother with the polish/port its overated and gives little gains,if your woired about the pourus head condition it costs around £230,steel gasket?around £25 id do these things now so you dont have to heve the head off again anytime soon!maybe do the seals urself and save a little $ hope this helps mate
id leave the followers as they can be done with the head on and if they aint rattling much leave um or just replace the ones that are knackered(squese um 2 check) the seals aint 2 bad to do but the valves need to come out,i can talk you through this if you like?but if your nervous dont do it,also you need a valve spring compressor to get the valves out,a pourus head aint easy to spot but the xe and let often have this problem,do you know if your heads made by cocast? or gm? im just having my c2o let head treated as its pourus,had oil in the water,looks just like head gasket failure,vauxshop r soring the problem for £232(including skim) and im fitting a steel gasket with head skimed+valves+seals sorted myself so hopefully mine will behave itself for a while! get back to me mate Azza
There seems to be an headwork expert lurking on there too.... (hint, Gary)
cheers reading it now
azza. is it explained well in Haynes?
i'm not too bothered about giving it a go as my confidence in taking things apart is growing. a guide would be fantastic though, if it's not covered in the manual.
my head is not a coscast one. i've been keeping an eye on the water, and it's not gungy/sludgy, but there has been a very fine film (rainbow effect) sat in the expansion tank. is this early indication that it's about to get worse porosity wise? i'll get it checked out if i take it somewhere.
i can buy a compressor, as that would be far less than having the work done by someone else i would imagine.
yeah the haynes manual is nice and clear,make sure you get a deep reach compressor as the other type wont work for vaux heads,soulds like a gentle seap of oil into the colant,i guess it depennds how long you wanna keep the car,the pourus treatment,skim+steel gasket will keep your head happy! the steal gaskets are much more reliable that the standard gasket,if your heads a gm one and was made before 93 then it could well be pourus,its a pain if it lets you down just after doing the gasket so i highly recomend it(they will check it and let you know if its pourus 1st)if you get stuck with the valve seals i can talk you thru mate,azza