Seeking Machine Shop for head

[bitsurfer001]

I plan on pulling the head and getting the valves done.
Any recommendations on a shop that has experience with these hondas?
I'm in the San Francisco Bay Area, but am open to shipping to the right shop.
Thanks,
Pete

[Eric Geiger]

Talk to miles or tim mings
Miles is in bay area, Mings is in LA
Z600miles@...
mercilessmings@...
Eric J. Geiger
PRG Nocturne
XXX-XXX-XXXX Cell
XXX-XXX-XXXX  phone
XXX-XXX-XXXX  fax
egeiger@...
www.prgnocturne.com

> On Feb 4, 2015, at 9:40 AM,
> pete@...
> [anzhonda600owners] anzhonda600owners@yahoogroups.com
> > wrote:
> I plan on pulling the head and getting the valves done.
> Any recommendations on a shop that has experience with these hondas?
> I'm in the San Francisco Bay Area, but am open to shipping to the right shop.
> Thanks,
> Pete

[bitsurfer001]

Thanks! Appreciate your help.

[chasgould]

I have a great guy in PA, who is a certified Honda motorcycle mechanic, and has done all of my little Honda 600 engines for years, so he knows them very well. He is extremely competent and very reasonable in price, and provides a detailed narrative of all of the work done with photographs. I don't know if he is accepting new work, but I can ask if you wish.
Chas

[blake neilson]

Any good machine shop that has experience with motorcycle engines should be able to handle the head.  One unique thing about the 600 is the adjustment for the valves.  The rocker arm shaft has an eccentric on one end. After checking the clearance, to adjust you loosen a lockbolt that releases the rocker arm from the shaft, then rotate the rocker shaft in one direction or the other to reduce or increase the clearance as needed.  Then tighten the bolt.
The critical factor is the final assembled height of the valve once the valve job is done. Keep in mind that grinding the seat and the valve will result in the valve stem extending further in the direction of the spring. To compensate the tip of the valve has to be ground the right amount to bring it back to spec. Some shops that do valve jobs on mostly run of the mill heads don't take this into account since the wide range of adjustment provided by hydraulic lifters will often accommodate the change. I don't know the range of adjustment provided by the eccentric rocker shafts but I don't think it has as much as other designs.  The machine shop also needs to restore spring pressure using shims under the valve springs. That step is such a standard practice I wouldn't worry about a shop leaving step out.
While on the subject, does Honda or any other engine manufacturer use that eccentric shaft idea on other engines?  I have never seen or heard of it elsewhere.
On Thursday, February 5, 2015 7:41 AM, "chasgould@... [anzhonda600owners]" wrote:
I have a great guy in PA, who is a certified Honda motorcycle mechanic, and has done all of my little Honda 600 engines for years, so he knows them very well. He is extremely competent and very reasonable in price, and provides a detailed narrative of all of the work done with photographs. I don't know if he is accepting new work, but I can ask if you wish.
Chas

[bitsurfer001]

Chas- Thanks for your input.
Yes, please ask if he is taking on new work.
I have yet to pull mine apart, so not sure exactly when I could mail it to him. Just researching options at this point.
Thanks,
Pete

[bitsurfer001]

Blake- Thanks for the tip on the eccentric adjustment and how it relates to the valve stem height.
This is the 1st vehicle I've owned with eccentric rocker arm shaft valve adjustment.
Thanks,
Pete