engine repair went wrong!
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DRUA

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engine repair went wrong!
« on: April 05, 2014, 09:49:08 AM »
Hello,

I new here and kind of new to bmw´s...I have a 318is 11/1992 and having head problems i send it to repair,the thing is that it went wrong...

The engine was all dismantled and ha new rings ,another thing in the bottom cranck and new VReinz gasgets,it was stupendous untill 70 km after new the head cracked....and it have been repaird and tested...well the mecanic boughted a new head but it was a m44 one...for what he says he puted the m44 head an valves and springs with the m42 crancks....the car dont work well...bad idle an it dosen t pull...specially if i put more than a inc of gas the car dont desenvolve...

If anyone  known this problem please help me with solution!!

Sorry for my bad english...I am portuguese!!


Regards,i ll wait for help!
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DesktopDave

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Re: engine repair went wrong!
« Reply #1 on: April 05, 2014, 09:57:01 AM »
Your English is good!

The M44 head won't work well with the M42 block. It bolts on from what I understand, but among other differences, the cam sender is mounted on the other cam...exhaust cam on the M42, intake cam on the M44. I'm not sure how that would effect running, but I'd suspect it would cause problems.

Check the M42 head if you still have it, you'll see what I mean.

I'd also be sure the usual problems are fixed - crank sensor in specifications, coil wires hooked up correctly, etc.
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Darky

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Re: engine repair went wrong!
« Reply #2 on: April 05, 2014, 11:58:21 PM »
Are you still using m42 camshafts on m44 head.
That would cause the problems!
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DRUA

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Re: engine repair went wrong!
« Reply #3 on: April 08, 2014, 02:45:50 PM »
yes i do..but the m42 head cracked...at the end of this week the car will go to a bmw workshop!!And this i supose it wont feel good!...i have read that the m42 block indeed don t accep the m44 head,but the mechanic says he is certain it should work!!I hope that the dyagnostic from the bmw really helps...this has been a nightmare with more then 6 months....and a winter without my rwd...

Thank you for the help,if get to more conclusions i ll share!
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Darky

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Re: engine repair went wrong!
« Reply #4 on: April 09, 2014, 04:59:21 AM »
Just a thought.
If you are using a m42 camshaft in m44 head. This would be your problem the lobes are a different size.
M44 requires bigger lobes to engage the tappets. M42 smaller sits on the lifters.
Cheers
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