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Hey guys,

Have just had fresh rebuild about 1500 km old , replaced nearly everything, eg eagle rods, cp pistons, acl race bearing, new crank, extended sump, n1 oil pump and nave noticed a ticking in the engine on idle that goes away after revving past 2500 rpm and nearly disappears when the engine is warm.

When the car is cold , the ticking stays with the revs until about 2500 revs and then cant be heard.

What do you experts think it could be?

I hope its not a bearing on the way so soon but ive heard 2 of them before and it sounds different.

Any help would be much appreciated!

Lifters. If its only just been rebuilt, you may just need the right oil. Plenty of people go putting super thin oil in there RB's because it says for high performance cars on the bottle and has pictures of drag cars and chequered flags and modern fast and furious style text fonts. Then they end up with rattly ticky engines that aren't getting the lubrication they need.

Have a similar type sound aswell like tick tick tick tick comes and goes but heard it coming from underneath somewhere as couldnt hear when bonnet up and then listening....

has yours ever done it when its warmed up or coming back from a drive?

My 34 ticks - I dont worry too much about it

32 just has lumpy cams - different sound

Mx 5 ticks but goes away after warming. Seems to be lifters.

Big end bearing is unmistakale so doubt it..

Lol - Piston Slap, awesome fear factor.

That'll make him shit kitttens.

never had any ticking lifters ever, my bro's old vl turbo had it for first few minutes cold

my rb has started developing some faint piston slap when cold, its bound to happen :unsure:

Edited by SliverS2

was it a professional rebuild? forged pistons? were the lifters reconditioned/checked?

Some 'forgies' will tick constantly I've been told. Yes mine was a professional build done at a reputable workshop. Nitto/JE pistons and rings along with other junk with a reco'd head.

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