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M20B20 to M42B18 swap
Discussion Forum relating to nonspecific BMW models from stock to mods, classic to latter models. Also including tech facts. Have fun with fellow members
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boy_mtech
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PostPosted: Tue Feb 08, 2011 2:15 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

modify the 'box mounting to suit engine.much better to avoid body twisting when u have bigger torque
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kura2
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PostPosted: Wed Feb 09, 2011 4:24 am    Post subject: Re: M20B20 to M42B18 swap Reply with quote

I told the mech that but he want to go ahead with engine mounting since mounting bracket sudah potong oredi. He'll modify steering column to cater for the exhaust. Should be ok i guess as he will modify only one bracket. The tilt looks better today:


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kura2
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PostPosted: Mon Feb 14, 2011 11:11 am    Post subject: Re: M20B20 to M42B18 swap Reply with quote



Good news: can use back m42 e36 rhd header. E30 m42 header shown.
Bad news: need to shorten intake manifold to clear brake servo.

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kura2
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PostPosted: Wed Feb 16, 2011 11:33 am    Post subject: Re: M20B20 to M42B18 swap Reply with quote


Intake manifold shorten and reverting back to e30 header due to clearance issue. Now waiting for longshaft to be modified as its too short for m42.

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kura2
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PostPosted: Thu Feb 17, 2011 10:34 am    Post subject: Re: M20B20 to M42B18 swap Reply with quote

Some pics for today:



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puddycat
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PostPosted: Thu Feb 17, 2011 11:55 am    Post subject: Re: M20B20 to M42B18 swap Reply with quote

can you reason why did you re-tilt your engine angle and cut the engine bracket on the right with the shortening of the manifold ?
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xsjado
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PostPosted: Thu Feb 17, 2011 12:21 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

a far and treacherous journey for m42 owners....took me six months..jumpman still not running...
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boy_mtech
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PostPosted: Thu Feb 17, 2011 3:43 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

Oh yeke? why is it too difficult? I tot it just plug n play je..
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kura2
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PostPosted: Fri Feb 18, 2011 12:48 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

puddycat wrote:
can you reason why did you re-tilt your engine angle and cut the engine bracket on the right with the shortening of the manifold ?

Engine bracket cut to cater for 10 degree difference between engine and m20 box. Shortening of the manifold cause mech scare it will hit brake master pump when its running. I don't really agree with their way of doing things though but so far their workmanship looks good enough for me.

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kura2
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PostPosted: Fri Feb 18, 2011 12:50 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

xsjado wrote:
a far and treacherous journey for m42 owners....took me six months..jumpman still not running...

Mine should be done by this weekend :). Well at least the mechanical tasks. Tuning is another grandfather story i guess. No more money for dyno tuning Sad

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kura2
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PostPosted: Fri Feb 18, 2011 12:51 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

boy_mtech wrote:
Oh yeke? why is it too difficult? I tot it just plug n play je..

the mech say "if plonk in 1jz sudah lama siap ooooo"

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kura2
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PostPosted: Fri Feb 18, 2011 1:07 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

Frankestein upgrade, unknown nissan servo mix with nissan vanette master pump with remote reservoir. Look at how close is the clearance.


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norden
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PostPosted: Fri Feb 18, 2011 1:43 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

how much you spend for this project? different with m40 ka? newbe lol

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puddycat
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PostPosted: Sat Feb 19, 2011 2:23 pm    Post subject: Re: M20B20 to M42B18 swap Reply with quote

kura2 wrote:
puddycat wrote:
can you reason why did you re-tilt your engine angle and cut the engine bracket on the right with the shortening of the manifold ?

Engine bracket cut to cater for 10 degree difference between engine and m20 box. Shortening of the manifold cause mech scare it will hit brake master pump when its running. I don't really agree with their way of doing things though but so far their workmanship looks good enough for me.


okay, since you tilt it back to -10deg, how will you settle the starvation of the cylinder head without oil everytime you start up your engine..there will be non in the hydraulic lifters ? so no lubrication there...

funny these days the mechanics, they can re-event the wheel.....
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kura2
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PostPosted: Sun Feb 20, 2011 4:09 am    Post subject: Re: M20B20 to M42B18 swap Reply with quote

norden wrote:
how much you spend for this project? different with m40 ka? newbe lol

Around 5k. M40 should cost less i guess since most part can use back.

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