Can you see anything wrong ?

[jojackson4]

I have a very annoying tap tap tap from the pas side rocker area
And has got louder this year so I have pulled the rocker top,plenom and rocker shaft
Can any one see if you can see any thing





Thanks gents
Peter

[LordGrover]

Now you've got it apart, have you checked exhaust manifolds/y-piece for leaks?

[jojackson4]

Thanks for that
Yes I have and it's not that sort of noise

[spend]

From the photo it looks to me like the rocker arms look to have been fitted with the offsets the wrong way round...

The valves are spaced out further than the pushrods if you look closely.

[jojackson4]

spend said:

From the photo it looks to me like the rocker arms look to have been fitted with the offsets the wrong way round...

The valves are spaced out further than the pushrods if you look closely.

Do you mean the the rockers are in the wrong position on the shaft
Sorry to be a numpty I am still learning with these agricultural car lumps
And i haven't found any shims are they found under the posts if there required ?

[spend]

jojackson4 said:

spend said:

From the photo it looks to me like the rocker arms look to have been fitted with the offsets the wrong way round...

The valves are spaced out further than the pushrods if you look closely.

Do you mean the the rockers are in the wrong position on the shaft
Sorry to be a numpty I am still learning with these agricultural car lumps
And i haven't found any shims are they found under the posts if there required ?

There are 8 LH rocker arms & 8 RH rocker arms.... Yours just has 16 fitted willy nilly so the tips are not aligned over valve stems and pushrods.

[phazed]

So it looks like you have 6 L/H and 2 R/H or the other way round I believe.

[jojackson4]

Found some part No on the rockers
And there's 2 different ones


Dose this make any sense?

[SteveSPG]

they should be in pairs, so a 53 and a 54 on each piston

[rigga]

Got any receipts for an engine rebuild?

[jojackson4]

Am off for a look again
So if there in pairs what do you start with?

Front of engine
Push rod No1 is a ? Sorry don't know if its inlet or exhaust
Push rod No2 is a ?
And do they stay the same on each piston ?

[jojackson4]

rigga said:

Got any receipts for an engine rebuild?

Yes but a long time ago some one beginning with A
And down south

[phazed]

Ah, tha Axxtxc place. If my spelling is correct.

[jojackson4]

Yep that's the ones
I have bills for about 6k 10 years ago
And the feckers did not X bolt it but top hat liners and
Balanced the crank as well as a load of other stuff

So do I just rebuild the rocker arms or
Replace the rockers

But will that mean re setting the pre load
And if it dose can you do it without removing
The inlet manifold and valley gasket?

Thanks again gents

Peter

[spend]

It's simple... the pads just face away from each other on adjacent pairs around the pedestal when assembled correctly.

[SteveSPG]

on your original post, the third pic looks correct

all the others look wrong.

likely you will need the valve tops tidying, and the rockers may well have worn on one side, meaning replacement

[Sardonicus]

Cant say I am surprised really just for sanity's sake

Edited by Sardonicus on Thursday 27th March 17:32

[jojackson4]

SteveSPG said:

on your original post, the third pic looks correct

all the others look wrong.

likely you will need the valve tops tidying, and the rockers may well have worn on one side, meaning replacement

Yes I think your right
The valve tops look ok
As for wear I don't know I can see were the valves have marked the pads
What about the preloadat the moment I want to
the yts boy at ***********

[chrispitman]

To set the pre load you have to measure at the follower. Thats alot more work I think the only way to do it is remove the inlet manifold. There adjusted either by shims under the posts (shimms come in 4's and a few different thicknesses you basically fit a set and measure so all the followers fall with in tollerence band) or by adjustable push rods.

I guess it would also depend how many miles that cam and followers have done, you can get uneven wear between cam lobs so would be a nightmare.

The rocker pads can be prone to cracking/breaking if there part worn/marked would swapping them back cause them to crack.

[spend]

chrispitman said:

The rocker pads can be prone to cracking/breaking if there part worn/marked would swapping them back cause them to crack.

If they haven't come off after being slapped continuously on the edge for this long, its unlikely they are going to move if installed correctly and struck in the 'sweet spot' for the rest of their lives.

Installing newer 'pattern' parts is likely to be a greater risk IMHO.

ETA:

It's more likely that the slight skewing might have created more wear on the rocker shaft ~ inspect the underside of the rocker shaft (rocker arms are always pressuring upwards on the underside so it only wear around lower @140degs).

Edited by spend on Thursday 27th March 18:18