cylinder head rebuild very handy link

heres a really good link to rebuild your cylinderhead.
replace stem seals etc
plus very usefull tools

http://www.nicoclub.com/archives/how-to-build-a-9000-rpm-sr20det-head.html

Grat guide very useful. nice find bob

nice, always nice to learn more

just looked at it and yes whilst its good it looks bloody complicated

Nice on Bob, the only trouble is I've done 2 heads in the last few months and I didn't notice that the springs had a right and a wrong way up.
Does it make a difference - and is he showing them the right way up.
His spring compressor looks a lot easier than the thing I use. Will have to see what I can get on Ebay..

i never found this link it was dan, but thought it was a great link and very in depth, so as much as i would like to take credit i just merely nicked it lol


john....yes the springs are similar to coil springs on suspension, the tighter coil part always goes at the bottom, this is to allow a progressive recoil 'if thats the correct word' of the spring.

ive never tried the springs round the other way tbh but would imagine that there is more chance of it throwing a rocker due to the weight of spring being more top heavy, but if its ok so far i wouldnt change it, maybe fit some rocker stoppers though as a safety precaution just in case!

hehe

this is handy too: http://z32.wikispaces.com/Consult+Quick+Reference

good link yet again dan il make that a sticky under ecu section
its mainly for 300zx but exactly same principal with regard to sensors etc

wow great info, i think i will follow that to the letter when i build my one. any info on port polishing? going to try and do my own

don't do the porting yourself as its a very precise job and needs to be done to perfection and flowed correctly.
if you mess it up youll have a very unbalanced engine that will also be down on power

a friend of mine has just done it himself on a very big 300zx build and he is getting good results from it. surely cant be too hard? haha

providing its flowed correctly and all ports are matching then it will be ok
theres a lot more than just getting a dremmel out and polishing but if you have time and patience then yes results should be ok

mikey bean wrote:a friend of mine has just done it himself on a very big 300zx build and he is getting good results from it. surely cant be too hard? haha

how do you know he is ? has it been on a flow bench ? from what i hear its as mentioned very easy to go to far its a case of knowing your stuff doing a bit flowing it check results do a bit more and knowing when to stop