Exhaust manifolds
Discussion
Am I right in thinking that the left hand tubular manifold on a series 2 350i can be removed with the engine in situ? It's MOT time and I've got some hammering to do!
I'm guessing you undo the manifold-head bolts the exhaust clamp and it drops out the bottom. Obviously there is about five hours of fiddling, aligning cursing etc. and you might need to raise the engine off the LH mount a tad to ease progress.
Have I got it about right? Is there anything else I should know?
Thanks
Leo
I'm guessing you undo the manifold-head bolts the exhaust clamp and it drops out the bottom. Obviously there is about five hours of fiddling, aligning cursing etc. and you might need to raise the engine off the LH mount a tad to ease progress.
Have I got it about right? Is there anything else I should know?
Thanks
Leo
I've been talking to a local custom exhaust company about making a new set of manifolds but this is for the future as I haven't got the garage to do the engine out work in yet! I'm having to make do and mend for now. Anyway this guy was talking about making it in sections so it could be taken apart which would mean easier removal and possibly even removal without taking the engine out. He specialises in stainless steel but recommended mild steel which could be stove enameled or $$$$ ceramic coated $$$$ for longevity if required. Obviously this could be a bit of a pipe dream as it's going to cost big bucks!
You need to get the car up quite high - about 18 inches - as this side is longer and needs more clearance underneath to drop it out. ALso if it's tight to get out (or in) you can loosen the engine mount on that side and jack up under the sump with a suitable wooden block to spread the load.
Good luck!
Good luck!
Lucky I know him.Ye Olde Wecg said:
Will the right hand manifold come out with engine in as well? I'm about to do battle with mine!
It looks MUCH tighter. I haven't tried it but it looks impossible to me! and I'm normally quite optimistic about such challenges 
Hence why I'm giving it a go with the LHS.lhs come out with no problems in about 20 mins
rhs needs steering link removed if i remember right, takes about 2 hrs to get off
if the exhaust bolts strip in the head it's a pain in the bum as there is very little room to get a helicoil/timesert kit in
general tip loosen the exhaust veerywhere before trying to refit the manifolds - it is also lots simpler if you can get a mate to help you
have fun
rhs needs steering link removed if i remember right, takes about 2 hrs to get off
if the exhaust bolts strip in the head it's a pain in the bum as there is very little room to get a helicoil/timesert kit in
general tip loosen the exhaust veerywhere before trying to refit the manifolds - it is also lots simpler if you can get a mate to help you
have fun
Having just done both sides, I cna comment here (based on an 88 390SE).
Both manifolds will come out without moving the engine or box.
To remove the drivers side, you are best of whipping the starter motor out, as it gets in the way. They are a wriggle, but they both come out. Do lift the front off the ground as far as you dare: gives more room under the car.
Ed.
Both manifolds will come out without moving the engine or box.
To remove the drivers side, you are best of whipping the starter motor out, as it gets in the way. They are a wriggle, but they both come out. Do lift the front off the ground as far as you dare: gives more room under the car.
Ed.
mightymouse said:
Before I get into stripping out the exhaust system (have a crack or rather a long hole in RH manifold at box flange joint)
- can someone advise on the internal diameter of the manifold please.
Idea is to sleeve it.
Many thanks
I'm getting mine sleeved on the outside to maintain the CSA. The tube changes to oval which complicates things! - can someone advise on the internal diameter of the manifold please. Idea is to sleeve it.
Many thanks
Got a small crack in my RH one as well. Hope it can be welded as I'm going to have to buy the rest of the exhaust system, but if it needs new manifolds as well, that's nearly a third of what the whole car is worth with a new MOT!!
Who has had experience of welding similar cracks up? If it is done well will it last long enough for my skinned knuckles to heal before I have to take it off again?
Place your bets.....now!!
Who has had experience of welding similar cracks up? If it is done well will it last long enough for my skinned knuckles to heal before I have to take it off again?
Place your bets.....now!!
Forums | Wedges | Top of Page | What's New | My Stuff