Camshaft M21 difference d and td

Finally, a home for all you 524td oil burners out there.
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Maxl
Posts: 2
Joined: Jan 30, 2022 4:27 PM
Location: Munich

Camshaft M21 difference d and td

Post by Maxl »

Hello Guys,
my name is Max, I am from Munich and I own a E30 324d.
My camshaft is in a bad condition and I want to exchange it. My question is: Does anybody know if the camshaft of a 324d/524d and a 324td/524td is the same? Because I dont want to spend 500€ for a new one. So the problem is that there are no used camshaft for sale in Germany. Only for the turbo motor.
The bmw partnumber is not the same. Maybe someone could help me.

Thanks
gadget73
Posts: 1176
Joined: Nov 22, 2017 10:30 PM
Location: New Jersey

Re: Camshaft M21 difference d and td

Post by gadget73 »

per RealOEM, a 1987 324D uses p/n 11311287139 cam. An 87 324TD uses 11312240863

Physically they should fit, no idea what the profile differences are though.
Maxl
Posts: 2
Joined: Jan 30, 2022 4:27 PM
Location: Munich

Re: Camshaft M21 difference d and td

Post by Maxl »

For sure the turbo camshaft fits in the 324d engine :D but is there a differnce? different lift maybe. I dont know.
But there is no information about the m21 engine. I am very desperated.
In Germany nearly nobody drives a M21 engine without the turbo.
gadget73
Posts: 1176
Joined: Nov 22, 2017 10:30 PM
Location: New Jersey

Re: Camshaft M21 difference d and td

Post by gadget73 »

I had the wastegate actuator fall off mine once. If thats how the non-turbo one performs I can understand why nobody drives that :)

Specs on the cam from the Ford manual. This should be the same as any of the turbo M21 engines
intake opens 6 BTDC
intake closes 34 ABDC
exhaust opens 46 BBDC
exhaust closes 6 ATDC
intake lift 0.374" / 9.5mm
exhaust lift 0.376" / 9.55mm

I don't know if the BMW manual for the non-turbo models has those specs or not. I don't have one.
Sriufke
Posts: 11
Joined: Feb 19, 2014 4:07 PM
Location: Europe

Re: Camshaft M21 difference d and td

Post by Sriufke »

The lift is different between the d and td engines. But it's so minimal that you won't even feel any difference.
Just get any M21 camshaft in good condition and you're good.
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