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engine and head
Posted: Sat Jun 05, 2010 7:58 am
by mmjosh
hi there my spare engine has a headgasket leak so i have got a replacement head gasket so what do i have to set up when i have put the head and the rockers on,is it just the rockers i set up or is there something else
cheers
josh
Re: engine and head
Posted: Sat Jun 05, 2010 9:15 am
by cadetchris
usually set up the valve gaps and that's it.
Re: engine and head
Posted: Sat Jun 05, 2010 4:27 pm
by mmjosh
ok
Re: engine and head
Posted: Sat Jun 05, 2010 7:20 pm
by bmcecosse
After torquing down the head fully - and then again after it has been run up to temperature - torque it down again and reset the valve gaps. I recommend 12 thou inlets and 15 thou exhausts.
Re: engine and head
Posted: Sun Jun 06, 2010 10:15 am
by ampwhu
when adjusting, are you talking about the rockers where you undo with a spanner, stick a feeler gauge inbetween then tighten with a screwdriver?
and do you do 1 & 8 together..... 2 & 7..... 3 & 6 etc?
Re: engine and head
Posted: Sun Jun 06, 2010 10:21 am
by bmcecosse
You do one at a time - when it's opposite number in the '9' rule is fully down! So - do #1 when #8 is fully down , #2 when # 7 is fully down etc etc.
Re: engine and head
Posted: Sun Jun 06, 2010 3:51 pm
by ampwhu
and number 1 being the grille end and number 8 being the bulkhead end?
Re: engine and head
Posted: Sun Jun 06, 2010 4:12 pm
by bmcecosse
Matters not a jot which end you start from!
Re: engine and head
Posted: Mon Jun 07, 2010 11:08 am
by ampwhu
upon re-fitting the head to the block, would you say it was ok to lightly sand the 2 surfaces with light grit paper? the head was fine before dismantling and the engine ran fine.
Re: engine and head
Posted: Mon Jun 07, 2010 4:22 pm
by bmcecosse
NO! You will only make pockets. Clean off all debris with a scraper - but don't rub with anything 'gritty' !
Re: engine and head
Posted: Mon Jun 07, 2010 8:22 pm
by alex_holden
Scotchbrite is safe to use if the surfaces just need a bit of light cleaning up. If stuff is really stuck on hard you can carefully scrape it off with a wood chisel.