Outer Limits 4x4 Board

Lads

as the subject says what tool do I need to compress the valve spring in my 6g74 engine so I can change the valve stem seals (in car without removing the heads)?

I've tried the little finger type to no avail

I 've heard that i need one that bolts onto the cam journals or something

Ado

Hi Adom, I read somewhere Frank did the ones on his new machine so hopefully he can help you (us).

How much does your smoke?

On a 6g72 if you take the spark plugs out and wind the motor over until the piston is at tdc, you can remove the collets and valve spring and the valve will rest on the piston without falling all the way in. Not entirely sure about 6g74. Hope this helps in some way

NJV6

Smoke is embarrassing, especially at the lights and at a drive through – I seem to have to top up the oil constantly (compression is good)

Constant smoke at idle after a few minutes parked and a big cloud when you take off then disappears as revs climb

Rosco

That part of it I'm fine on - I just can't compress the spring to get the collets off mate

Ado

Oh sorry, you can buy a valve spring compressor from most trade tool shops. It sort of looks like a small bearing puller, but with a ring at the top instead of a point, two hooks go on the spring and you wind it down until you can dig out the collets. Have'nt got a picture though.

Rosco

Yeah thanks mate, I got one of those - won't fit, there's not enough clearance around the valve springs - with 4 valves per cyl there's only 1mm between the spring and the head casting itself...,

There must be another tool or some thing

Ado

Hi Ado, in Venezuela we used a Snap-On tool, the other one I know is Mitsubishi, tomorrow I will show you a pic , its pretty simple, you bolted in the cam...

Al

Al

Thanks - looking forward to the pic

Ado

Hi Ado
on the older twin cam Jags you used an arm that bolted to the cam bearing studs. It had a piece of tube with notches up the sides that swung
from arround the centre of the arm. You placed the tube on the valve spring retainer and leaned on the free end of the arm, depressing the spring and allowing you to pick the collets out through the notches with a small screwdriver and magnet.

J Top

Thanks mate,

any idea where I might get one of those?

Ado

Sorry no, they have all been home made. Quite simple to.

Hi Ado!.. I forgot to put the pic, but I find the tool at snap on tools, check this link, it's same we used

http://buy1.snapon.com/catalog/item.asp ... ir=catalog