adjustable cam ? explain/85 318i 1.8L - BMW Forum

j123crx · 10-11-2005, 02:03 AM

they have adjustable cams, how do you do that ?

BMWJNKY · 10-11-2005, 12:27 PM

You can get an adjustable cam gear to advance or retard ignition timing but you cant adjust anything on the cam itstelf. The only ajustable lift cams are on the new BMW V8's and V12's and even then the cam doesn't change they just mechanically change the pivot point for the rocker shaft which changes lift and duration.

Kowalski · 10-11-2005, 09:22 PM

the M42's have adjustable cam gears, you can adjust 10 degreese on each cam i believe it was. if you adjust for more hp you loose torque if you adjust for more torque you loose hp so its a win loose situation...

to adjust the cam gears you just have to remove the valve cover the cam gear will be right there, you can loosen the nuts and adjust it, i dont recomend doing this yourself unless you are verry experienced...

j123crx · 10-11-2005, 09:27 PM

right...don't mess with it...got it

Kowalski · 10-11-2005, 09:36 PM

hahaha

BMWJNKY · 10-11-2005, 10:39 PM

He has a M10 so he couldn't change anything even if he wanted to.

j123crx · 10-13-2005, 12:30 AM

i just heard it mentioned, didn't know what they were talking about...

Kowalski · 10-13-2005, 12:56 AM

Quote:

Originally Posted by AJ's320i

He has a M10 so he couldn't change anything even if he wanted to.

i didnt say he had an M42 i was replying to your thread

You can get an adjustable cam gear to advance or retard ignition timing but you cant adjust anything on the cam itstelf. The only ajustable lift cams are on the new BMW V8's and V12's and even then the cam doesn't change they just mechanically change the pivot point for the rocker shaft which changes lift and duration.

as he has heard of the 318's having adjustable cam gears. i was telling him which engine did.