Reduced pulley and belt...what's the worst that could happen?

[SiBurt]

Hi people.

I'm booked in with our friends at Lohen for an Alta reduced pulley and belt.

What's the worst thing that can happen if it all goes wrong?

Si.

[St00ge]

Quote: Originally Posted by SiBurt

Hi people.

I'm booked in with our friends at Lohen for an Alta reduced pulley and belt.

What's the worst thing that can happen if it all goes wrong?

Si.

pulley belt could snap, belt tensioner could snap, not really much else. Supercharger won't blow. If ur air fuel mixture runs too lean (very unlikely) you could fry some valves, but if that's a concern, just get an ECU remap and ur totally safe.

[Richard Crofts]

Supercharger breaks and/or you melt the internals on the head/engine.

Thats not likely though as there are many folks on here that have reduced pulleys from all sorts of companies including the Alta one that Lohen seem to fit. There don't appear to have been much in the way of seroius faults cause by reduced pulley fitting, who know the true logevity issue though until someone has had one on a car for 5 or more years and plenty of miles. i would not worry though the chaps at Lohen come highly recomended and seem to know what they are about...plus the 15-16% reduced pulley seems to be the favourite with many tuners at the moment, they cant all be wrong!

[obehave]

There are cars out there with over 60K miles on reduction pulleys. Mainly 15% since that was what was available first.

[Perm]

Hi,
Sorry to hijack this thread,

When do BMW change / check the belt in the service schedule ?

Thanks

Perm

[Richard Crofts]

- You think they really bother?

I think the manual says 50,000 miles...but don't quote me.

R

[SiBurt]

Thanks guys.I thought that might be the case but it's nice to have your reassurances!

By the way,the car already has the JCW program,JCW airbox and a Milltek cat-back!

Roll on March 4th!!!

Si.

[St00ge]

i think someone also posted up recently that he's done 100K miles with a 17% pulley....

[SiBurt]