Just got the cylinder head back from SES all nice and shiny... Going to put it all back together tonight......
Now what oil would you recommend bearing in mind the head needs to be run in?
Restricted revs for first 500 miles you reckon?
My mate reckons should put mobile one in it!!!
come on you engine builders!!!
Standard Castrol GTX if you can't get a hold of some propper running in oil.
Oil & filter change at 500 miles
Refill with standard Castrol GTX for 5000 miles then oil and filter change then use a good semi-sythetic after that.
Don't be tempted to use a fully or semi synthetic to run an engine in as it won't run in propery, remember the point of running in is to wear the components onto each other. Synthetic oil is too good at lubricating to let this happen!
Keep your revs below 2/3rds of max and no harsh acceleration either!
What 'weight' is castrol GTX?
15W 40 ???
Will keep revs under 2500rpm for first 500 miles and under 3500 rpm for next 5000 miles.........
yep - comma running in oil is recommended, but never tried it myself.
I used a mineral 15w40 to run mine in to 650 miles, keeping below 4k - now I'm on vauxs 10w40 semi, and giving it some good thrashings.
once I hit 1k it'll be fully synth again (vaux 5w40)
Trouble is - its only the cylinder head thats been rebuilt - not the bottom end - so dont really want to put running oil into a bottom end that done 100k +
oh... I thought you rebuilt the whole thing ?
well in that case you don't need to run the head in at all - exception to that rule is cams but that's not really oil related, as such.
just grit yer teeth and be prepared for that horrible rattly empty tappet noise
whilst you got the head off is the best time to replaces rings, BE shells etc.. you sure you don't want to drop the sump and see what's up ?
If it was mine I'd do the whole lot myself - but its my mates engine and he wants to spend as little as possible on the engine and as much as possible on the paintwork and bodykit
Got the head work done and all parts, etc for £400 all in....built it all back up and looks great.....
I compression tested the bottom end before dismantling and it gave 170 Psi across all four so dont reckon a re-build is worth doing yet....
Ive a feeling he is going to want turbo power or throttle bodies once he saves some more cash anyway.........
well assuming turbo power is the change engine route then fine.
however, if he intends to put throttles on, then it would be a very wise move to have the sump off now while it's easy, to install ARP bolts, check the shells, rods, bores and general health etc..
a compression check doesn't tell you if the crank, oil pump, BEs etc etc are worn and ready to put a rod through the block @ 7000rpm when that extra power arrives...