Vehicle & Technical > Range Rover
Rapping, tapping noice under load
Guardian.:
THEYVE ALL GOt liners mate, and when they decideto move about it aint good.
hopefully its your exhaust manifold, as mine did that when it had a new system fitted , apparently they are hard to get gas tight on the v8's, but after another go they shut it up.
Jonny Boaterboy:
Arrr you see gardian sometime you are best keeping you mouth shut to aviod looking like a spanner :oops: I knew they all had liners really! will have a look at the manifold tommorow!
Thanks all
hairyasswelder:
--- Quote from: Jonny Boaterboy on February 17, 2008, 20:32:41 --- was there no black exhaust marks where it was leaking on the manifold?
--- End quote ---
Not with LPG ;)
--- Quote from: Guardian. on February 17, 2008, 21:57:35 ---THEYVE ALL GOt liners mate, and when they decideto move about it aint good.
--- End quote ---
Thats why I argue that the 3.5 is the better engine ;) rare the liners slip on the 3.5 but it is 10 horses or so behind the 3.9.
Range Rover Blues:
You can get a few of those horses back by fitting a 3.9 cam to a 3.5 anyway.
One fo the reasons (people think) the 4.2 is more likely to suffer a cracked block is that it runs lean, to try and make it economical
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=320219232557&_trksid=p2759.l1259
15-18mpg, hmmmm that's a bit optimistic :?
Anyhoo, I'd go with the exhaust manifold leaking, they are a PITA TBH, I fitted a sports syetm because I got sick of putting a new downpippe gasket on my LSE every month.
The back bolts are very hard to get to on the cylinder head/gasket joint and often work themsleves loose. Earlier cars had lock-washers on these joints but they rarely get replaced becasue the tabs are impossible to reach once the engine is in the car.
Later cars have spring washers, well I ask you :roll: spring washers, in an environment hot enough to re-temper steel? they are really going to last aren't they :rolleyes:
So they come loose, especially when you drive hard. My LSE was blowing a gasket every time I towed with it. I binned the cats too as I think they were blocked, it use less fuel now anyway :D
You might also find that the gasket surface omn the manifold has rusted away making the gasket weaker, this seems to happen worst on the back of the head too :doh: That's one reason a good pair of manifolds fetch decent money.
Jonny Boaterboy:
ok so it sounds like I need to reseal the manifolds..... I assume you will need to get a new gasket set using genuine Landrover as they will seal properly...... or am I just hoping! Can you not put a smear of gum gum exhaust sealing paste to make a perfect seal? I will also replace all the nuts with stainless items.
The whole exhaust is getting tired now should I be thinking about replacing it all in one? I would like to get a stainless sports system (because its cheaper than a genuine) complete with manifolds cats and the holes for the lambard sensors has anyone got a second hand one for sale? [-o<
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version