stuck oil filter housing bolt

HellRot

Regular Member
Joined
Jul 10, 2020
Points
15
In the process of what should a simple task, i needed t5o change the oil filter housing gasket on my M44, however one of the upper longer bolts securing it to the block, the one closest to the front of the car, is rusted/seized. It space out slightly, but i reckon any more pressure could shear the bolt. Ive tried heat, plugs, soaked for a couple of nights. All i can think of now is giving it some welly, and if the bolt snaps then try to extract it, unless it shears in the block. Any ideas?
 

t-tony

The Legend
Deceased
Supporter
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Have you tried hitting the bolt on it’s end using large hammer and a punch (drift). Then try to tighten the bolt slightly before attempting to loosen it.

Tony.
 

HellRot

Regular Member
Joined
Jul 10, 2020
Points
15
Have you tried hitting the bolt on it’s end using large hammer and a punch (drift). Then try to tighten the bolt slightly before attempting to loosen it.

Tony.
Hi Tony, yes i have tried shocking it, and tried tightening in and out, but the bolt feels like its twisting, near shearing possibly.
 

t-tony

The Legend
Deceased
Supporter
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Chances are that there is a corrosion build up around the bolt then. Can you post a picture and point out which bolt is the problem?

Tony.
 

t-tony

The Legend
Deceased
Supporter
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
You can feel the bolt twisting, so it’s likely seized in the bottom “collar” . Take all the other bolts out and see if, with some tapping, the whole housing will turn a little. If it does it’s not likely tho shear in the engine block and in that case I would turn it and see what happens.

Tony.
 

HellRot

Regular Member
Joined
Jul 10, 2020
Points
15
update to to this, as Tony said, it was seized in the bottom collar by the shank. I ended up having to cut the housing to free it, and ordered a used housing to replace. If anyone gets stuck like this i hope this helps.
 

t-tony

The Legend
Deceased
Supporter
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Glad you’ve made some progress on it.

Tony.
 

Stevo7682

Zorg Expert (I)
Supporter
The M44 Massive
Scottish Zeds
Joined
Apr 1, 2016
Points
218
Location
Maybole , South Ayrshire
Model of Z
Z3 Individual Dakar / Orinoco Individual
I had same issue with the same bolt on my Dakar ended up getting it free with a bit of heat and perseverance problem is bolt quite long but only a 4mm so likely to shear if too much force applied this is definitely one that care is needed to remove or things could get messy fairly quickly.
 
Top