Quality Rockers??

v8man · Post by **v8man** » Mon Nov 30, 2009 4:06 pm

interesting as i got a set of group A rockers that need rebushing
how much have you paid for rebushing yours?? ,
as my local guy wants 160 pounds to do mines !

cheers
Gil

TVRleigh · Post by **TVRleigh** » Tue Dec 01, 2009 1:15 pm

v8man wrote:interesting as i got a set of group A rockers that need rebushing
how much have you paid for rebushing yours?? ,
as my local guy wants 160 pounds to do mines !

cheers
Gil

Well not had them done yet, just sent them off to be looked at.
Are they re-making the bushes.
I was tempted to lathe down the shafts and fit roller bearings. and just make spacers for the pedestals.
but don't currently have a lathe and not 100% sure it would work.
Will let you know the price of re-bushing once I know.

CastleMGBV8 · Post by **CastleMGBV8** » Thu Dec 03, 2009 12:15 pm

If you been going to automotive engineers the price does not surpise me, I got lucky for engine machining by using a precision engineering company near me and the prices are half what the auto guys wanted.

Try your local yellow pages for precision engineers, these guys can ususually do anything apart from boring and crank grinding and they probably make the bushes for the Auto guys anyway and they just double the price.

Kevin.

spend · Post by **spend** » Thu Dec 03, 2009 2:19 pm

Many are pretty short of work at the moment, and prices for cash opps small jobs will vary wildly, certainly worth shopping around if like me you have plenty of engineers around (not sure of thats a geographical thing between Sheffield and Birmingham where they seem to be hidden away everywhere..)

Post by **demo2** » Thu Dec 03, 2009 9:57 pm

If u get them rebushed, get the holes put in off centre, gives u a bit more lift

, mine are like this

sidecar · Post by **sidecar** » Fri Dec 04, 2009 6:02 am

TVRleigh wrote:
v8man wrote:interesting as i got a set of group A rockers that need rebushing
how much have you paid for rebushing yours?? ,
as my local guy wants 160 pounds to do mines !

cheers
Gil
Well not had them done yet, just sent them off to be looked at.
Are they re-making the bushes.
I was tempted to lathe down the shafts and fit roller bearings. and just make spacers for the pedestals.
but don't currently have a lathe and not 100% sure it would work.
Will let you know the price of re-bushing once I know.

Your idea sounds good put I'd be a bit worried about making the shafts thinner as they are prone to snapping at the ends.

I guess outrigger supports would solve the problem but the hole in them for the shafts would need to sleeved down to suit the thinner shafts.

linzerl · Post by **linzerl** » Mon Dec 07, 2009 7:56 am

Here's an update:

I did eventually purchase the rockers (650153/4) however I don't know the manufacturer.. and as described in extended detail on another Rover V8 site (I have a TVR), suffered a drop in oil pressure due to the excessive oil galleries cut in the rockers.

I went back to the original rockers.. and oil pressure returned to normal. I was very interested to know that no Land Rover/Range Rover V8 car since 1985 came with an oil pressure gauage.. so I am wonderfing if this is a major issue that has not been widely experienced, due to it's lack of visibility.

With the poorly engineered rockers, oil pressure is:

cold engine 2500rpm 20PSI
cold engine 1000rpm 10PSI

warm engine 2500rpm 15PSI
wrm engine 1000rpm > 10PSI

back to the original rockers.. idle is 20PSW.. over 30PSI at 2000RPM+

SuperV8 · Post by **SuperV8** » Wed Dec 30, 2009 12:18 am

I had fitted my OEM rockers, set the preload to min tolerance and I though that was that.

Luckily today fiddling about with my valley gasket I twiddled a couple of the push rods. Don't know why just a fiddler I guess. Lucky I did, one was loose... There was play up and down.

Took the rocker shaft off and on close inspection you can see the cup in the end of the rocker is set deeper in the rocker. I swapped the rockers round and sure enough no play.

Just goes to show even with britpart OEM rockers or any part for that matter they should be carefully checked...

sidecar · Post by **sidecar** » Wed Dec 30, 2009 11:37 am

SuperV8 wrote:
Just goes to show even with britpart OEM rockers or any part for that matter they should be carefully checked...

Britpart is often referred to as Shxxpart......

Quagmire · Post by **Quagmire** » Wed Dec 30, 2009 12:25 pm

Dont mention the blue box parts on any landrover forum! Your original posting will be lost in a sea of complaints....

I bought some new rockers and shafts when i did my 3.5- the shafts measured fine but the rockers themselves were waaay to loose on them.

I compared to a set of good second hand genuine rocker assemblies and decided to go with the used shafts and rockers as they were tighter.

I did try the new, rubbish ones just to see. They made much more noise and dropped my oil pressure too...

A year later and on the used genuine shafts and rockers i get:

-20 psi idle warm
-40-45 psi idle cold.

Thats idling at about 600rpm.

When warm and at cruise- say 60mph 5th gear i get about 40 psi.

Using Green 20W50.

I have to take it easy on the thottle until it is warm as the pressure would go through the roof if i let it...

ikari1 · Post by **ikari1** » Tue Apr 10, 2012 3:30 pm

Sorry to res an old thread but one worth mentioning with the difficulty of obtaining original/OEM rockers now days....

The thing I've noticed on some of the replacement rockers I've recently recieved is the difference in the depth of the oil channels within the bore. There seems to be different depths with different makes. It is also evident on the pictures in a above post comparing the old original rockers with new replacement ones. The rocker on the right seems to show much deeper channels.

I feel that this difference propably makes as much difference to oil pressure issues as the overall difference between the bore sizes/gaps.