Vicinity

iTrader: (7)

Will a bent rocker cause a loud tapping (and by loud, I mean a car with true duals next to me cannot hide it)... my mechanic believes thats the reason, so I figure if it is, I'll do a swap for a new set I found on Summit.

Also, is there any advantage to upgrading them? I might do H/C later, so...

the_merv

iTrader: (88)

Could be a Lifter..

Vicinity

iTrader: (7)

Well, would it be worth it to replace them as well?

97blackz28

iTrader: (6)

if you going to do the lifters you might as well do the head swap you said you were thinking about, because the heads have to come off to do the lifters.

EDS01SS

iTrader: (30)

i highly doubt you have a bent rocker arm and its slightly possible that its a dead lifter but its a very good possibility that you have a bent pushrod.

want297z

iTrader: (7)

I agree on the pushrod. Are they still stock ones?

Vicinity

iTrader: (7)

As far as I know. I just had my Dad look at it, he thinks its a lifter, he's worked on Harley engines for the past 20 years...

How much more difficult is it to fix a pushrod?

the_merv

iTrader: (88)

Pull the Coils, Valve Covers, and all the Rockers, then take all of them out and start looking at them. I just put all them on a Table, and see which ones roll wierd.

97blackz28

iTrader: (6)

pushrods are much easier than lifters. do what it says above, should take no more than 30 minutes to get PRs out.

vettenuts

iTrader: (4)

Keep them in order and in top/bottom orientation for re-installation. If you know where the noise is, then just pull that one and the ones on either side of it to start with. Usually caused by an over-rev, miss any shifts lately?

Vicinity

iTrader: (7)

Never, but the previous owner autocrossed it, so he might have. It pops out of third all the time, but I think that's a tranny issue.

It's coming from the driver side, or atleast, its louder over there. I might try this tomorrow.

Vicinity

iTrader: (7)

What about the gasket? Will the valve cover leak anything? Can I just pull it apart and reinstall it? What about oil?

WS6_00

iTrader: (10)

put a tad bit of oil on the pushrods when installing them back in, it will help them not to be so noisy when you start it up after the install.

Vicinity

iTrader: (7)

Bump. I need an answer, I want to check today.

dyls1

iTrader: (11)

the valve cover gaskets are reusable

Vicinity

iTrader: (7)

So I can just pop them off, inspect and put right back together and everything will be just as it was? (assuming I do it right)

vettenuts

iTrader: (4)

Yes, worst case if the gasket is bad (they are rubber and most times re-usable) you will need to replace later. Not as big a deal as running with your current issue. There is also a removal and re-installation procedure for the rockers. Here is the GM re-installation procedure.

Vicinity

iTrader: (7)

Oh, thanks man!

How do I rotate the crankshaft?

vettenuts

iTrader: (4)

See if you can get a 24mm wrench on it. Not familiar with the f-body as I have a Vette. In the Vette, the rack sits right in front of the pulley and you are limited to what you can get in there. Having the plugs out will help when its time to turn it. To find TDC, watch for the #1 intake to close and then bring the piston to the top.

Vicinity

iTrader: (7)

Uh, where is the crankshaft?