Exhaust manifold
Discussion
Found a crack in the manifold but how does the manifold come out?
They come out with out removing the water rails on a 4.5, is a 4.2 different? Engine & gearbox mounts still need undoing, takes a lot twisting & swearing though!
I welded mine back up with them still on the car one time, can you not get to the cracks with out taking them off?
If you don't want them cracking again you could try what I did here link
I welded mine back up with them still on the car one time, can you not get to the cracks with out taking them off?
If you don't want them cracking again you could try what I did here link
high52kojak said:
How the hell did they come out with the water rails on? Good work, mine is a 4.5 and they were difficult to get out even with the extra room the removed rails gave.
Once I'd taken the bolts out if the gearbox & engine mounts I jacked the engine up a bit (using a bit of 4x2 timber to spread the load) so it would shove over a bit more, that should give just enough room.Once you have one out the other is much easier as the engine will move over much further with out a manifold there stopping it!
Make sure you remove all the bolts from the lower holes, even though the exhaust has cut outs on the bottom & will come off with out taking them all the way out they still get in the way.
They come out of the top, I found after jacking the car up much higher to try & out of the bottom...
Even then it's very tight & makes a right mess of the exhaust rap you spent ages putting on the last time they were out
. I removed just the passenger side engine mount, I didn't touch the gearbox mounts. After removing said mount and jacking the engine slightly it could be pushed across enough to pull the pas side manifold up through the top, with a bit of twisting.
For the drivers side I got a piece of wood down near the gearbox somewhere to lever the engine across the other way, then that manifold was lifted out, of course it makes it easier if you have a friend there to help.
For the drivers side I got a piece of wood down near the gearbox somewhere to lever the engine across the other way, then that manifold was lifted out, of course it makes it easier if you have a friend there to help.
Arse, that reminds me why it was so much harder this time. The first time it took them off I changed all the rubber mounts, with them removed from the engine mounts it can all move much more, I'd been wandering how I'd got them in with damaging the wrap, doh.
If you don't want to change them removing the whole mount would be a better bet, as said above passenger one only, the drivers won't come off with out taking a hard oil pipe off.
I did get them out this time with the rubbers & mounts still there but it would be a lot easier to just take that mount right off!
If you don't want to change them removing the whole mount would be a better bet, as said above passenger one only, the drivers won't come off with out taking a hard oil pipe off.
I did get them out this time with the rubbers & mounts still there but it would be a lot easier to just take that mount right off!
They are both cracked in more or less the same position on the two inside manifold, is this the norm?
Now step in at any time, as I understand tomorrow they are going to be brazed not welded because welding causes the carbon inside the pipes to be mixed during welding which then becomes carbon steel which is brittle and why they tend to crack again after welding.
Cheers guys
Nigel
Now step in at any time, as I understand tomorrow they are going to be brazed not welded because welding causes the carbon inside the pipes to be mixed during welding which then becomes carbon steel which is brittle and why they tend to crack again after welding.
Cheers guys
Nigel
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