Hello all,

Searched for a while but could not find a straight answer. If a thread exists I would be grateful if someone could point the way.

I am doing my timing belt today, and while the crank pulley is off, I want to use my lathe to machine off the two belt grooves that were used for power steering and A/C. I am absolutely sure I will not go back to power steering or air conditioning on my car, and would like the extra room/lightened pulley. I am sure the effect is minimal, but so is the effort to do so, and I like to modify my things. Might be able to get a cool DIY out of it as well.

As far as my understanding goes I should be able to do so without effecting the harmonic balancer, assuming I don't touch anything except the unused belt grooves?

Thanks for your time,
Matt

 

Anyone that I know of who has gone to a single accessory belt usually buy a Euro R H22 or S2k single belt Crank pulley. For the F & H series engines. I'm pretty sure there are also single belt OEM pulleys available for B/D series.

I'm sure you could machine your crank pulley easy enough without issue. I ground mine off with an angle grinder. However, I will be running an S2K pulley instead. The only thing that I would suggest is that you have it balanced afterward.

 

what engine?

why not buy a fluidamper that already done the job for you and a much better job at ballancing.

its really not that much weight compared to the rotational mass of flywheel.

 

Yes, that shouldn't be a problem. I've done it and my friend's done it on more than one occassion. After you've gotten rid of the grooves, you can run it to a machine shop and have it balanced for ya for an extra piece of mind. Thats what we've done before and there's been no problems.

 

It is on a D16Z6 engine that will likely be turbocharged in the future.

I do not think it is worth the price of a aftermarket pulley in this instance. If I did not happen to have a lathe I would just leave it stock. But because I am taking it off anyways, and have a lathe, I think it might be worth the 20 minutes to machine it down.

I do plan on going to a lightweight flywheel in the near future (throw out bearing is going, while I am there I will upgrade clutch/flywheel).

Thank you everyone for your input. If there have been good results doing this I will try it out. Worst case I get a new pulley down the road.

Matt

 

If you are getting a LWFW in the near future you could wait and have both parts balanced at the same time. Definitely worth the piece of mind.

I have found that some popular LWFW manufacturers don't balance their flywheels very well sometimes.

 

i would still ballance it after you done

 

I machined my stock b series pulley on my b20 after machining the two belt grooves there is rubber material honda used for dampening......I no longer run that pulley.... wouldnt recomend it because you have to machine it then balance it and the edge where the belt would rest gets weak and cracks...imo i would buy a ATi or Fluidamper.....i currently use the ati race pulley