BMW Forums : BimmerForums banner

1 - 13 of 13 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter #1
Hello

I currently have a 1997 E36 M3 Evo Convertible and I'm thinking of undertaking an engine rebuild on my M3 Evo, the VANOS unit, went and when I was driving along I could suddenly smell both petrol and oil in the cabin.
Tried to get home and the engine seized on me at the lights now it just won't turn over.
Took it to one mechanic who showed me that two of the pistons aren't moving when turned from the crank and also one of the CAMs, its the right one as you look at it head on which I believe is the inlet CAM.
Any suggestions, as to what I should do, I had the engine from new and its only done 50K and don't really wanna take on another engine where I don't know its history ........ unless I have to of course .........
Also does anyone know where I can get the appropriate tools without ordering from the US .........

Thanks ............. :cool
 

·
Registered
Joined
·
2,255 Posts
There's a place down south thats quite good, called Bavarian Motor Works (London area). They are very reputable if you fancy giving them a call and seeing if they can offer a service at a price to suit you.
 

·
Bimmerforums Central
Joined
·
8,030 Posts
Hello

I currently have a 1997 E36 M3 Evo Convertible and I'm thinking of undertaking an engine rebuild on my M3 Evo, the VANOS unit, went and when I was driving along I could suddenly smell both petrol and oil in the cabin.
Tried to get home and the engine seized on me at the lights now it just won't turn over.
Took it to one mechanic who showed me that two of the pistons aren't moving when turned from the crank and also one of the CAMs, its the right one as you look at it head on which I believe is the inlet CAM.
Any suggestions, as to what I should do, I had the engine from new and its only done 50K and don't really wanna take on another engine where I don't know its history ........ unless I have to of course .........
Also does anyone know where I can get the appropriate tools without ordering from the US .........

Thanks ............. :cool
Please read THIS hench.

I have moved this thread to the correct forum
 

·
Bimmerforums Central
Joined
·
8,030 Posts
To answer your thread.
Unfortunately unless your going to do all the work yourself and are EXPERIENCED at engine building then your best bet is to buy a used engine from a reputable breakers...

it will be guaranteed for 3 months - 6 months


How do you know the Vanos unit has 'gone' hennch?
 

·
Registered
Joined
·
114 Posts
I had a m3 evo vert a few years ago and my engine gave up the ghost. It was easier to get a second hand engine, than mess about re building that one. I got a evo lump with full history and had done 40k for £1500 cash.
To rebuild yours will be easy £3k plus.
 

·
Registered
Joined
·
5 Posts
Discussion Starter #7
Thanks for the info, I am currently looking for the special crankshaft tools in order to rotate the crank.
I have also been quoted around £1700 for an engine replacement, but thought I would have a look myself to determina what the issue is and then make a decision accordingly, since I am not in a rush to have a car the need for a quick solution isn't there.

So far I have striped the engine down to the remove the VANOS Unit (bolts are broken on exhaust side) and the Cylinder head to examine it, but the Crankshaft cannot rotate fully, found this out when I took it to the mechanic for initial diagnosis. I am therefore thinking on checking the bottom end to determine the problem as I believe this is the best approach, hence why I require the special tool to rotate the crank, to replicate the issue. I am now able to examine the main block and I can see that the block is fully in tact and therefore it appears that the engine has not thrown a rod through it. I would also like a little guidance on how to best approach this and what little subtlies to look for.
 

·
Registered
Joined
·
20,393 Posts
Can you turn the crank at all? If it will go one way so far then stop and you can turn it back so far and it stops again then either you have a bent valve or the timing has jumped
 

·
Registered
Joined
·
5 Posts
Discussion Starter #9
That's exactly what is happening when the BMW specialist showed me, also the inlet cam ,together with a couple of pistons aren't moving when he demonstrated this.
I have been advised to remove the cylinder head first and then take a look, but I am second guessing myself during the process, what are your thoughts ???
 

·
Registered
Joined
·
20,393 Posts
Sounds bad! Which pistons were not moving? How did you determine if they were moving? Need as much info as possible to paint a picture.

I have a perfect idea but need more info
 

·
Registered
Joined
·
5 Posts
Discussion Starter #11
If I can get hold of the special tool to attach to the crankshaft I can rotate it and then tell you, do you know where I can get hold of this tool ....... or the BMW Part no.
 

·
Registered
Joined
·
5 Posts
Discussion Starter #12
I can't remember which ones aren't moving, but if I can get hold of the tool which I can connect to the crankshaft I can rotate it and give you more detail.
I'll also take a couple of pics and mark on the pics which ones aren't moving.
Do you know where I can get hold of this, without going to direct to BMW, rip off merchants ......
 

·
Registered
Joined
·
20,393 Posts
The only tool that's required to turn the crank is a breaker bar/ratchet with a socket that fits the crank bolt
 
1 - 13 of 13 Posts
Top