Best Price for Schricks

[dpgrand]

why exactly is this?

[e30s52]

because the valves hit the pistons.

[dpgrand]

ok. so how does the Dr. Vanos fix this problem of the valves hitting the pistons?

[e30s52]

it changes the vanos system. go here for more info http://www.drvanos.com/

[StereoInstaller1]

stock vanos system wont work with sunbelts. simple enough for you?

Simple, but could you add more complexity?

[e30polak]

stock vanos system wont work with sunbelts. simple enough for you?

Sure it will, if you either get the Dr. Vanos upgrade, or simply the vanos limiter that bimmerworld sells, works fine for street and track applications.

because the valves hit the pistons.

Again this has been a rare occurrence for those that take their engines up to the 7400 rpm rev limit that the bimmerworld tune used to come with. They will give you a 7k or 7200 rev limit if you ask and then you'll be fine.

P.S almost every one of the prior engine failures due to sunbelts were caused by over-revved engines with stock valve springs and retainers.

[devonjordan]

Yes, Im going with Schricks...

You know whats funny though? I come on an e30 board for questions with my e36...

-Devon-

[e30s52]

vanos is variable timing system right? so as the timing changes the valves will open more so the engine will run more efficient. when this happens with the sunbelts the valves open to far and stay open to long causing the valves to hit the pistons. this is my basic understanding of the problem.

[e30s52]

Again this has been a rare occurrence

not so rare if they have had 2 cars in the shop with this problem in 1 month. both were street cars with new springs and retainers was what the tech told me.

[gobuffs]

vanos is variable timing system right? so as the timing changes the valves will open more so the engine will run more efficient. when this happens with the sunbelts the valves open to far and stay open to long causing the valves to hit the pistons. this is my basic understanding of the problem.

Not so if they are timed right (hence the Dr Vanos suggestion).

[e30s52]

this again is with the stock vanos system. not with dr.vanos.

[e30polak]

not so rare if they have had 2 cars in the shop with this problem in 1 month. both were street cars with new springs and retainers was what the tech told me.

Well Dr. Vanos isn't a bad idea, along with new springs and retainers, which has proven pretty full proof for the Sunbelt cams. Plus Bimmerworld insists that you install their Vanos limiter which essentially does the same thing as Dr. Vanos, but with your preexisting unit. This debate has been covered heavily on bfc and I've had the pleasure of reading it all. Verdict is that the Sunbelts are better overall.

[e30s52]

yeah they are better but cost alot more to put in then shricks. they are probaly about $1000 more with everything then the shricks.

[dpgrand]

get what you pay for....

[devonjordan]

get what you pay for....

You get what you can afford...