Thread: My thanks to Scouse...

AFAIR, the problem of fitting heads over studs occurs with RRC and D1/D2 because the scuttle ridges out over the last pair of cylinders, making access a bad language exercise.


I used ARP studs on the D2 4.6l HC rebuild just finished for No.2 son for Broome without any access problems appearing to be an issue in future. But the engine was assembled out of vehicle, not quite how you are progressing your fault. I was impressed by the ease of stud nut tensioning with this change.


Cheers


Pete

Hi Ron
I used the ARP studs...they fitted with no dramas. IIRC there is a positive location dowel. Some of the studs I inserted after the head was in place. The ARP studs come with ARP's special lube which reduces the friction and maximises the clamping force. For this reason, I ignored the recommended 90 ftlbs torque setting on the instruction leaflet (my extensive reading suggested this setting applied to dry threads) and reduced it to 65-70 ftlbs on the Elring gasket kit. This comes with a composite valley gasket. I bought a Payen metal one and lightly smeared "cling wrap thin" Loctite 518 around the water jacket holes etc. Same with the upper inlet (metal) (Elring) manifold gasket.

good luck with it

I see ARP make a specific kit for the 10 bolt 3.9-4.6 engines, kit no. 157-4301

I'll ring Fabre tomorrow to see if they stock it. It does look exxy!

Pics added to my original post and to another later in the thread.

BTW, my car was also leaking at the exhaust gaskets. These are the steel ones. I've bought composites for the rebuild.

Originally Posted by p38arover

BTW, my car was also leaking at the exhaust gaskets. These are the steel ones. I've bought composites for the rebuild.

After a few noisy failures of composite gaskets I've gone back to steel ones. Composite ones blow out a big chunk, steel ones remain intact.

Ron

Composite exhaust gaskets sound like they would be much better, I suspect I have a small exhaust leak developing as well

Are they hard to come by?

Steve

Originally Posted by TheTree

Are they hard to come by?

No, they are an LR part ERR6733. The old steel gaskets are handed, you need 2 of each. The new one isn't handed so you get 4.

But now Jilden has me worried!

I've been told by a couple of people now that they don't use gaskets, just high temp silicone on the joint.