Noswizard wrote:
mgbv8 wrote:
And make sure that you follow the RV8 cam bedding in prodedure from 1st start. I have never NOT done this. So I have not experienced the aftermath. I just go by others experience of premature cam wear when they didint bed the cam and lifters in??
X2 - VERY IMPORTANT - the higher and longer you hold the revs up the better - unfortunately that can be a BIG problem if you don't set the timing and fuel to be cock on BEFORE cranking, which itself can be a problem with new builds.
The main things I make sure of is priming the oil system with a drill first to make sure she has oil pressure from the first start.Make sure you have plenty of cam lube on the bottoms of the lifters. Make sure you have a smear of cam lube or ARP assembly lube on each end of every push rod and on the valve tips when you assemble.
Re fit the dissy at TDC and then knock it forward a tad. About 4mm of Advance rotation will be fine to start with.
Make sure your cooling system is filled and vented so its as full as possible.
If the carb was working ok before it should be ok. But make sure you have fuel up to the carb and make sure you can here the float bowl fill when the power comes on before you crank it over.
Fit your strobe for the start up.
When she fires up hold the revs at about 1500 while you quickly set a rough advance of about 20 degree's and nip the clamp lightly down. The timing may not be spot on but you should be able to sit inside and run the revs up and down from 1500 to 3000 over a 20 minute period to bed the cam in while someone keeps an eye out for any leaks. I sit inside my MG while keeping an eye on my oil pressure and temp as my Son keeps an eye on the engine for any leaks.
Its an unusal experience to bed the cam in as you seem to go against all the rules. ie start it and let it run slow to warm up. You just have to bite the bullet and rev the thing from cold to get all that cam and rocker gear settled in first time.
If you have built the engine ok and got the ring gaps sorted for nitrous use it will be a walk in the park mate.
My last full rebuild was a real push for time back in elate 2009. I had to wait until my wages went in to buy the last few bits. We got the build finished about 4pm on the Saturday before a Sunday RWYB. We got her on the trailer as it was getting dark and did the 25 minute bedding in on the trailer outside the house. I let her cool for an hour and then checked oil and water and topped up to the required levels. She started on the button and idled ok while I set final timing from idle to flat out.
we went out on the Sunday and ran 3 PB's back to back