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M90 engine intake manifold swap question

M90 engine intake manifold swap question

Postby Yoozt » Fri Sep 08, 2017 11:10 am

We have an early BMW E23 with an 3.5 litre M90 engine with the motronic intake manifold and setup, like this:

Image

We're thinking of putting it in our BMW E12

For the looks we would like to use an earlier intake manifold (L-jetronic) like this:

Image

Is it possible to just swap the intake and leave the motronic setup?
I've seen motronic 1.3 engines (M30B35) with an oldschool intake manifold, so I was hoping this would work to.
If this is possible, so just screw the Throttle Housing etc on the old manifold, what extras need to been done? for instance, what to do with the startervalve on the old manifold?

thanks
Yoozt
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Re: M90 engine intake manifold swap question

Postby 323baur » Fri Sep 08, 2017 12:34 pm

My engine (m90 original)is now out of my car.
If necessary you can take some measurements.
If it wil fit... I don't know
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall. Torque is how far you take the wall with you.
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Re: M90 engine intake manifold swap question

Postby Yoozt » Tue Sep 12, 2017 1:00 pm

Thanks,

We found out that the intake manifold will fit, but the injectors wont...
Yoozt
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Posts: 55
Joined: Sun Aug 23, 2015 10:16 am
Location: Utrecht
My E21(s): Non E21: E28 525E, E12 535i


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