Vehicle & Technical > Range Rover

Rapping, tapping noice under load

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Range Rover Blues:
Keep watching E-Bay, both mine came from there, besides you'll find all the double S dealers are the same price, not by coincidence :evil:

Otherwise hunt out your local powerflow dealer, ours is pretty useless but I think it was 'lord of the strings' had a really nice system built by the one in Lincs.

Otherwise, well I end up taking the manifold right off, cleaning it up (get the faces flat) and often applying either exhaust assembly paste or similar along with a new downpipe gasket to that joint face (nothing too thick), plus a new gasket set to the head/manifold face.

I've tried the standard sort, composite aluminium and asbestos substitute, I've tried the ones form Rimmer's that look like linoleum too, they would be good except they lined up so badly that they burned through (my heads and manifolds had been ported so less sealing surface) so now I stick with the later OEM style ones, sometimes called twin port gaskets as you need 2 per head.  They are laminated alumium or something, 3 layers of metal and I have found them 100% the best, so much so I havn't touched them in about a year on either car :D

You'll almost certainly have grief with the 3 bolts in the downpipe flange too, I pull them out and fit an M8 bolt in their place.  NB, the bolts for the head are NOT metric, though an M8 will fit and if the thread is trashed an M8 will find a bit of purchase.

I also find it good practice to use studs on the head rather than bolts, the aluminium thread is far less likely to fail is the stud is not spinning in the head when you torque it up ;)

That said I fitted the sports sytem to the LSE with new bolts and lock washers rather than spring washers, if you buy one you'll find it a total PITA to get to some of the bolts, you only want to do that once.

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