i recently built my yb from a new block, crank, pistons, rods, the problem i have is the engine sounds great when cold. but when warm theres a rattle from the top end when backing off the revs. had new followers but sill the same. when booting it it sounds very cammy. any suggestions,

 

timing?

 

its been suggested as timming as its running bd10,s and verniers. want to make sure as ive booked it in on wed to have the timming checked. but as you may know ive had all sorts of suggestions from little ends, piston slap or poor valve springs very confusing.

 

could be , ive got it booked in on weds to have the timming check, as its runnig bd 10, and verniers. ive had suggestions from piston slap to little ends, poor valve spings / cam, as you can see im very confused. its booked in on weds,

 

doubt it pistonslap to be honest as that would be more noisey when cold

 

my mate had that problem it was a dodgy oil pump

 

you must forgive me im new to this site, could it be week valve springs or would you stronly suggest valve timming for the verniers

 

its hard to say to be honest but it deffo worth getting the timing checked!"

 

oil pump had been check on rebuild its new high pressure one aswell, 80psi when cold and 28 psi at normal opperating temp.

 

how did you set the verniers up when you did the timeing

 

from the stock pulleys for now.