Thread: My thanks to Scouse...

I also used the 157-4301 kit but on the basis of other posts etc set the torque at 65-70 ftlbs... This may have been on the issue of using the earlier kit.

Clubgreenie is recommending 85 ftlbs. The original recommendation in the instructions I got with the 157-4301 kit were to torque to 90 ft lbs using their special goo under the washers. Seems they have upped it.

From what I've been able to glean on other sites e.g LR4x4 - The Land Rover Forum, there's a difference between the kit 124-4003 for the 14 bolt heads and the later kit as above.

While some well experienced folk on rr.net report regularly using the earlier kit to good effect on 4.6L engines, it appears the earlier kits had insufficient depth into the head with the 7/16th thread, hence the cases of threads pulling out of the block...may have also been a problem with the block..

(a) What sort of trouble did you have getting 100 ft lbs... did the stud turn?

(b) Should I remove or at least loosen the lower inlet manifold bolts prior to re-tensioning the head?

All advice welcome!

Originally Posted by p38arover

Hmm, I just found this: WARNING: ARP stud kit 124-4003 on Rover V8!!! - Tools and Fabrication - LR4x4 - The Land Rover Forum - that's a bit worrying. Note that I used kit 157-4301

I mentioned that to you when we were fitting the studs. Yours are fine - long thread section into the block / short thread section for the nuts.

Originally Posted by Hoges

(a) What sort of trouble did you have getting 100 ft lbs... did the stud turn?

(b) Should I remove or at least loosen the lower inlet manifold bolts prior to re-tensioning the head?

(a) The problem was the body and arm angles leaning across the engine to try and pull 100ft. lbs., especially with my dodgy shoulder. Scouse had to do some of the tensioning. A couple of times in the tensioning process, as the torque climbed, there were little slips of a fraction of a turn which did concern me.

(b) Ahh, that I can't help with. I'd hate to make a wrong call. Even so, tensioning from where you are to 100 ft.lbs. won't make much difference in head gasket thickness and thus may not affect the inlet manifold. But I don't know.

FWIW,, studs, lube and at least 85lb,,
ask me how I know,,go on,, it'll only take an hour(and a thousand bucks or so--)

Pedro... not sure about the "thousand bucks" implication... did you have a stud snap?

no,
just two(actually 3!) headgaskets---

You guys are making me paranoid (I think that's what the P stands for in P38a). I replaced my head gasket around 7500 k's ago. Today I just had to do a compression test to make sure all was ok. Compression varied between 135 and 138 between all cylinders .

I can relax again

Gary

Never relax, that's when they sneak up on you