So after looking in to the M52tu manifold conversion I have always though I wouldn't bothered some report say it's not worth it.
After digging and chatting the info gain suggested may be it was. So purchased a near complete M54B30 manifold and decided to give it a go
Needed to order a few more bits so new gaskets order to remount it along with an adapter plate to mount my M52TU Throttle body to the manifold.
This arrived quickly from Latvia from Bimmertune and fitted a treat, a nicely machined adapter with all it's fittings.
Offered up here.
And after a build up it can be seen here between the manifold and throttle body.
The manifold shares all the sensors from the M54 when cross matching the part numbers so the swap is straight forward.
You can see below the difference in inlet size between old and new from the smaller oval M52tu to the larger D shaped port of the M54 manifold this matching how the head is machined.
A closer image here.
Quite a difference and not to dissimilar in the M52- M50 conversion.
The manifold came with the new Disa valve the size of this valve is huge compared to the M52tu one shown below.
Now this part although it tested good having found online how to check one was a bit loose and on removing it the end pin nearly fell out. You hear of the damage this could cause although it could come loose but not fall out as it fits against a casing preventing it.
The old bits...
The flap mounts on the cam but it was worn so it slopped about quite common.
I decided a rebuild was the best option so brought a kit.
This cures the pin problem as it bolts though the cam from the opposite end so in theory no pin to fall out.
The black parts although they look plastic are aircraft grade aluminium so are far superior to stock.
It's fixed the issue and the valve now works perfectly
You can see the pin on the right flat
topped and the pin left just comes up through so rather than pivoting on two pins it runs on a full rod.
The removal was actually far easier than I expected and a hour saw it all in bits The engine was nice an dry under the manifold and all looks well.
It did show a blocked breather from the CCV to the dip stick but it all cleaned through and I removed the dipstick tube to flush it all out.
Looks drastic but it's not a bad job if I'm honest.
Everything tagged new blank plugs behind the manifold fitted as they where perished and split so caught in time before it gave issue. New vacuum lines to everything underneath whilst it's all out.
Just waiting the manifold gasket and a new T.B seal and I'll get it back together
After digging and chatting the info gain suggested may be it was. So purchased a near complete M54B30 manifold and decided to give it a go
Needed to order a few more bits so new gaskets order to remount it along with an adapter plate to mount my M52TU Throttle body to the manifold.
This arrived quickly from Latvia from Bimmertune and fitted a treat, a nicely machined adapter with all it's fittings.
Offered up here.
And after a build up it can be seen here between the manifold and throttle body.
The manifold shares all the sensors from the M54 when cross matching the part numbers so the swap is straight forward.
You can see below the difference in inlet size between old and new from the smaller oval M52tu to the larger D shaped port of the M54 manifold this matching how the head is machined.
A closer image here.
Quite a difference and not to dissimilar in the M52- M50 conversion.
The manifold came with the new Disa valve the size of this valve is huge compared to the M52tu one shown below.
Now this part although it tested good having found online how to check one was a bit loose and on removing it the end pin nearly fell out. You hear of the damage this could cause although it could come loose but not fall out as it fits against a casing preventing it.
The old bits...
The flap mounts on the cam but it was worn so it slopped about quite common.
I decided a rebuild was the best option so brought a kit.
This cures the pin problem as it bolts though the cam from the opposite end so in theory no pin to fall out.
The black parts although they look plastic are aircraft grade aluminium so are far superior to stock.
It's fixed the issue and the valve now works perfectly
You can see the pin on the right flat
topped and the pin left just comes up through so rather than pivoting on two pins it runs on a full rod.
The removal was actually far easier than I expected and a hour saw it all in bits The engine was nice an dry under the manifold and all looks well.
It did show a blocked breather from the CCV to the dip stick but it all cleaned through and I removed the dipstick tube to flush it all out.
Looks drastic but it's not a bad job if I'm honest.
Everything tagged new blank plugs behind the manifold fitted as they where perished and split so caught in time before it gave issue. New vacuum lines to everything underneath whilst it's all out.
Just waiting the manifold gasket and a new T.B seal and I'll get it back together
