After a search on Google, it looks like the 4 cylinder engines did not have vanos. I found the same as you though at first with mixed opinions so I’m not completely sure. Do you have any good pictures of your car to share on here?
I have pics of the car but not good ones lol. The thing is, I was driving it and I notice some kind of “VTEC” thing at 3k rpm (sry for honda reference, i did own a civic before getting this car). It is a very significant and consistent change of engine sound. What is going on?
You can tell by looking under the hood. If it has that little bulge on the timing belt cover, it has VANOS.
Nope I dont have that buldge. No VANOS for me then. Thanks for the help! But what was that change of engine sound at 3k rpm?
The 1.9 Z3 has the M44 engine which did not have vanos. It did have Dual length intake manifold or DISA in BMW terms. It has a long intake manifold during low rpms for low end torque and around mid rpms the intake becomes shorter, probably the cause of you hearing a different sound form your engine, to produce top end power. Hope this helps since its very early in the morning still cant sleep and since i love BMWs i had to help an owner out
Oh so that’s what it was. At low rpms my engine sounds like its bored but at exactly 3k rpm it changes into a very distinct higher pitch. For a moment there I thought I bought a Z3 with a hidden honda engine lol. I shall read more about this DISA on the internet. Thank you very much for the info… really helpful!
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After a search on Google, it looks like the 4 cylinder engines did not have vanos. I found the same as you though at first with mixed opinions so I’m not completely sure. Do you have any good pictures of your car to share on here?
I have pics of the car but not good ones lol. The thing is, I was driving it and I notice some kind of “VTEC” thing at 3k rpm (sry for honda reference, i did own a civic before getting this car). It is a very significant and consistent change of engine sound. What is going on?
You can tell by looking under the hood. If it has that little bulge on the timing belt cover, it has VANOS.
Nope I dont have that buldge. No VANOS for me then. Thanks for the help! But what was that change of engine sound at 3k rpm?
The 1.9 Z3 has the M44 engine which did not have vanos. It did have Dual length intake manifold or DISA in BMW terms. It has a long intake manifold during low rpms for low end torque and around mid rpms the intake becomes shorter, probably the cause of you hearing a different sound form your engine, to produce top end power. Hope this helps since its very early in the morning still cant sleep and since i love BMWs i had to help an owner out
Oh so that’s what it was. At low rpms my engine sounds like its bored but at exactly 3k rpm it changes into a very distinct higher pitch. For a moment there I thought I bought a Z3 with a hidden honda engine lol. I shall read more about this DISA on the internet. Thank you very much for the info… really helpful!