Valve guide seals

greenmeanie · Post by **greenmeanie** » Tue Feb 06, 2007 9:32 pm

I have just obtained a set of V8 heads from eblag that alledgedly came of a '97 US spec Disco. They have the 3 hole accessory mounts that I need so things are good. While overhauling the heads I want to replace the inlet valve seals. My issue is that I had understood that valve guide seals were only fitted to the inlets yet these heads have a seal of sorts for each valve - both inlet and exhaust. Has this ever been done or is it an 'upgrade' by a PO?

My next issues is that the seals look unlike anything I have seen online. I have a set of the latest blue cap type seals (ERR1782) which don't appear to fit. I even have what I think are the older washer type (ERC7865) and would use these if they are still considered adequate.. The seals that came out look like small black plastic or age hardened rubber washers with a slight recess in the base (leaves a .020 - .030 lip around edge) and a low step (.030 approx. by eye) to make a boss on the top. Again are these Rover parts (what is the part #) or something 'upgraded'?

Finally, did the fix for the much maligned sticky valves include machining or replacing the old valve guides to accept the new blue cap type seals?

My old heads are the old pre '76 double spring type when life was simple and no seals were used so they are no help for reference.

Cheers
Gregor

HairbearTE · Post by **HairbearTE** » Fri Feb 09, 2007 2:10 am

The later blue guides are a big improvement over the earlier type and yes they are fitted to exhaust and inlet. The only problem being your existing guides may need maching to fit them. This can be done easily and is not an expensive operation, Real Steel can do it for you amongst others. Have a browse through the "old forum" (top of index page) and you can find a thread discussing this topic in more depth, including some pics, and also suggestions of a few bits of work you might aswell get done at the same time. Its worth a look.

HairbearTE · Post by **HairbearTE** » Fri Feb 09, 2007 2:14 am

Heres the link: http://www.v-8.org.uk/snitzforum/topic. ... IC_ID=4996

greenmeanie · Post by **greenmeanie** » Fri Feb 09, 2007 3:05 pm

Thanks Hairbear. That is good info. Do you know the part number for the 3.9EFI seal or the black one on the right. I have the very basic washer seal but the one shown in your picture is the type that was on my new heads soI'd prefer them.

Cheers
Gregor

HairbearTE · Post by **HairbearTE** » Fri Feb 09, 2007 8:39 pm

I dont have that part number. Whenever i need a pn i have a look through the rimmer bros. website. Whatever you do dont buy 'em from there though! (prob cost 3 times as much). Real Steel have them, i know that much.