E21 Swap

For all your questions, problems and DIY stories
Mohanad Hani
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Posts: 19
Joined: Wed Jan 15, 2014 10:00 pm
My E21(s): 315 1979

Re: E21 Swap

Post by Mohanad Hani »

tuning the car cost nearly the same price of the car here :D
and it won't be able to use it daily if i turbocharged it. Because we have high temprature and traffic jam so the car won't be able to overcome that heat.


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Mihajlo
E21 Pro
Posts: 549
Joined: Thu Aug 23, 2007 11:07 am
My E21(s): 1982 315swap323i
Location: Croatia - Rijeka
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Re: E21 Swap

Post by Mihajlo »

my car price was quite cheap.
now you do the math.. :screwy

easiest thing to do will be swap M20B25 and cheapest I guess :)
Understeer is when you hit the wall with the front of the car. 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.
Mohanad Hani
Newbee
Posts: 19
Joined: Wed Jan 15, 2014 10:00 pm
My E21(s): 315 1979

Re: E21 Swap

Post by Mohanad Hani »

I found 2 motors with low mileage and extremely gret condition. M40b18 and M20b20. What should i go for ? Bth are on e30s
I think M20B20 is better. What do tou think ?
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e21-Mark
E21 Master
Posts: 5715
Joined: Fri Mar 21, 2008 2:19 pm
My E21(s): 316 m52/2.8 Cat Cams & Jenvey ITB
Facebook page: https://www.facebook.com/JackyardBackoff
Location: Cornwall - UK

Re: E21 Swap

Post by e21-Mark »

M20
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Mihajlo
E21 Pro
Posts: 549
Joined: Thu Aug 23, 2007 11:07 am
My E21(s): 1982 315swap323i
Location: Croatia - Rijeka
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Re: E21 Swap

Post by Mihajlo »

If you do a swap, do it right way.
Understeer is when you hit the wall with the front of the car. 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.
Mohanad Hani
Newbee
Posts: 19
Joined: Wed Jan 15, 2014 10:00 pm
My E21(s): 315 1979

Re: E21 Swap

Post by Mohanad Hani »

What do u mean with right way ?
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Mihajlo
E21 Pro
Posts: 549
Joined: Thu Aug 23, 2007 11:07 am
My E21(s): 1982 315swap323i
Location: Croatia - Rijeka
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Re: E21 Swap

Post by Mihajlo »

Don't do swap with not enough horsepower.

I thaught M20B23 and 143HP will be enough for me. Now I see it isn't, so I'm looking forward for next swap (M20B25).
Understeer is when you hit the wall with the front of the car. 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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AndyBaur
E21 Fanatic
Posts: 282
Joined: Thu Apr 21, 2011 11:10 pm
My E21(s): 1983 320/6 Baur 5-speed (now gone)
Location: 55* North

Re: E21 Swap

Post by AndyBaur »

Mihajlo wrote:I thaught M20B23 and 143HP will be enough for me. Now I see it isn't
Death wish :screwy

My standard M20B20 can barely handle the 122hp it came with never mind more power. That's why there are so few 323's left. Hot E21's need an LSD & well sorted suspension or there's trouble ahead.

Why not just rebuild the M10 with a few choice mods?

The M20's are a straight forward swap once you have the correct subframe. You'll get a used one from Europe.

I used to have a link for a (US?) company that made a little gearbox to convert electrical signals to mechanical to power the speedo when doing conversions.
AndyS

Live each day as if it's your last because one day it will be.
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Mihajlo
E21 Pro
Posts: 549
Joined: Thu Aug 23, 2007 11:07 am
My E21(s): 1982 315swap323i
Location: Croatia - Rijeka
Contact:

Re: E21 Swap

Post by Mihajlo »

AndyBaur wrote:
Mihajlo wrote:I thaught M20B23 and 143HP will be enough for me. Now I see it isn't
Death wish :screwy

My standard M20B20 can barely handle the 122hp it came with never mind more power. That's why there are so few 323's left. Hot E21's need an LSD & well sorted suspension or there's trouble ahead.

Why not just rebuild the M10 with a few choice mods?

The M20's are a straight forward swap once you have the correct subframe. You'll get a used one from Europe.

I used to have a link for a (US?) company that made a little gearbox to convert electrical signals to mechanical to power the speedo when doing conversions.

No one wants to live forever! Niether do I. :crazy (just kidding)

LSD, Checked!
upgraded Coilover suspension, Checked
upgraded braking system, Soon to be checked
:playcar
Understeer is when you hit the wall with the front of the car. 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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