Timing Chain noise?

[wrenchn2]

Re: Timing Chain noise?

Crankshaft endplay?


Its pretty tight wish i could give an exact number but i cant remeber the specs.

If it was bad enough you would see a lot of play like 3/16 inch or so then the counterweights could hit the block every now and then and make noise.

[SleeperT-Bird87]

Re: Timing Chain noise?

Crankshaft endplay?


Its pretty tight wish i could give an exact number but i cant remeber the specs.

If it was bad enough you would see a lot of play like 3/16 inch or so then the counterweights could hit the block every now and then and make noise.

I want to say it's .010 or so

[wrenchn2]

Re: Timing Chain noise?

if it is a chevy it could also be a fuel pump arm with a broken return spring. assuming stock pump on block

[SleeperT-Bird87]

Re: Timing Chain noise?

if it is a chevy it could also be a fuel pump arm with a broken return spring. assuming stock pump on block

It has an electric pump

[wrenchn2]

Re: Timing Chain noise?

ok then i would have to go with previous post from others. put it back together with new chain and see if the noise is gone. If not run it temporarily without accessories belt and see if noise goes away.

[SleeperT-Bird87]

Re: Timing Chain noise?

ok then i would have to go with previous post from others. put it back together with new chain and see if the noise is gone. If not run it temporarily without accessories belt and see if noise goes away.

I just wanted to eliminate the variables Id hate to put it back together then have to pull it right back out

[wrenchn2]

Re: Timing Chain noise?

Cool,

The only other things I can think of are pistons (cracked skirts , too small or carbon on tops), sometimes a broken acc bracket. Most things you already covered rod brgs, flywheel , balancer etc.

Let is know what you find.

thanks,
wrenchn2

[SleeperT-Bird87]

Re: Timing Chain noise?

Cool,

The only other things I can think of are pistons (cracked skirts , too small or carbon on tops), sometimes a broken acc bracket. Most things you already covered rod brgs, flywheel , balancer etc.

Let is know what you find.

thanks,
wrenchn2

im going to pick up a new double roller chain tommorow hopefully they have something american made.

[SpeedZealot]

Re: Timing Chain noise?

cam button??? cam walk will kill a timing set. pull the dizzy see how it looks

[SleeperT-Bird87]

Re: Timing Chain noise?

cam button??? cam walk will kill a timing set. pull the dizzy see how it looks

the cam does have a bit of walk with the old timing set on it.

[A/Fuel]

Re: Timing Chain noise?

just a thought...
maybe the oil pump rod has some slop in it.

[SleeperT-Bird87]

Re: Timing Chain noise?

just a thought...
maybe the oil pump rod has some slop in it.

Ill check it but my car has a SBC in it ;D

[Dans 83]

Re: Timing Chain noise?

cam button??? cam walk will kill a timing set. pull the dizzy see how it looks

Roller cam? brass dist. gear worn?/ roller... wrong gear?

[wrenchn2]

Re: Timing Chain noise?

Lubrication,

If the engine is tilted way down in the back it may not get oil from valley drainage and front of oil pan. It seems to me that i always see about an inch or 2 in the front of the pan when i pull a timing cover off. The crank gear picks up oil there and splashes chain for lubrication, plus 2 front lifter valley drains. I dont remember any pressurized oil for the chain but i may be wrong on that one. Maybe someone here has better memory than me.

[SleeperT-Bird87]

Re: Timing Chain noise?

cam button??? cam walk will kill a timing set. pull the dizzy see how it looks

Roller cam? brass dist. gear worn?/ roller... wrong gear?

hydraulic flat tappet, stock gear