bmwe21.net forums

Hello guys
I have e21 model 1981 316
I want to install m43b16
Any help?

Dear Ahmed, welcome! Where about are you based? Any pics of your e21?

With all due respect, why would you want to put in this engine? There are lots of different engines with more power, more bite of even with more cilinders that require the same effort and ajustments to your e21.

Thnx fkr replying dear
Am from egypt but for sorry don have any pic for my car
I found these engine suitable due to less fuel consumption and enough power for me
100 hp with 160 n.m

Or i install m40?
With this one no modification will happen

Tell me your opinion

M40 is a good an engine as the m43. M40 have often ticking sounds in head, due to wear on the cam. Also it has a belt, that is a waek point. The m43 has a chain. So if it is to get a reliable engine than I would want the m43 instead of the m40.

But the old engine, the 90bhp 1.8 316 engine is not good anymore?

Good thinking as the M10 is a very reliable engine as well! By the way, welcome!

Thanks alot guys
So what you suggest?

If ok, keep the original engine.

M10 again?

Why not? Can you find them over there? Easiest change of course.

I'm currently fitting an M42 into mine.
I don't know much about M40 or M43 so I can't really comment there.

Search my posts for my topic '316 still here'

I need to upgrade "jeron"

How u install m42? Joe14

I'm in the process, lots of info in here
http://www.bmwe21.net/forum/viewtopic.p ... 2&start=60

Using my existing 318 m10 5speed box, with another bell housing, engine mounts will probably be custom.
Plan on using the existing gearbox mounts and prop.
Battery relocate to the boot, e30 318is fuel pump with additional return fuel line.

Thanks alot i'll check the link
But how many bars e30 fuel pump is?

3 bar I think.
You need the 318is pump as it has the port for the return fuel line.