Topic: Possible fix for F2/F3 valves

[MRieck]

I'm looking into getting lash caps for theses valves. This would be a cure for damaged valve stem tips. The valves would need to be ground down to accomadate the lash caps so I'll work out a price if everything goes according to plan.

[scondon]

    Next engine I do will most likely be an F3 so definitely interested as I'll surely be sending you the head for work.

[Sam Green Racing]

Hi Sean and Mike,

How is yours coming along Sean ?

[scondon]

Hey Sam, I got the bike running and it sounds pretty sweet. I'm using an auxilliary tank until my freshly painted tank arrives, so no riding yet. I've got to fix a small leak in one of the oil cooler lines, add braided brake lines, and give it a tune-up but otherwise it's ready to go. Two weeks and it'll hit the streets for it's maiden voyage

[MRieck]

Hey Sam, I got the bike running and it sounds pretty sweet. I'm using an auxilliary tank until my freshly painted tank arrives, so no riding yet. I've got to fix a small leak in one of the oil cooler lines, add braided brake lines, and give it a tune-up but otherwise it's ready to go. Two weeks and it'll hit the streets for it's maiden voyage

Nice! Keep us updated. PS  Hope everything is well on the English front Sam.

[Sam Green Racing]

Hi Mike, How ya Doing.
Sad in the Southern States.
Just watching ABC news on Uk TV 2am Sun morning.
I have relatives in Pascagoula and have had no news.
Have left emails on several sites for them but no replys.
Pascagoula and Biloxi took the full force of this #$%* of a storm.
Although I have prayed it makes you wonder if there is a God.
All we can do is hope

Regards Sam.

[MRieck]

Hi Mike, How ya Doing.
Sad in the Southern States.
Just watching ABC news on Uk TV 2am Sun morning.
I have relatives in Pascagoula and have had no news.
Have left emails on several sites for them but no replys.
Pascagoula and Biloxi took the full force of this #$%* of a storm.
Although I have prayed it makes you wonder if there is a God.
All we can do is hope

Regards Sam.

My minister is from Biloxi and my dad worked at the shipyards in Pascagoula as an engineer in the early 70's Sam. There are serious issues in those areas and laying blame doesn't help anyone as I'm sure you can agree. Those folks are in my prayers as well and my children wll pray too as we did tonight and over the last few nights. Thanks for your belief in a higher power. BTW, that process I described can be used to save regular CVB valves as well

[Sam Green Racing]

What is it Mike, is it a cap that goes over the end of the valve, is it to take up wear on the end of the valve if it goes through the hardened surface.?

Did your Dad work at Ingles ship yard?

[MRieck]

What is it Mike, is it a cap that goes over the end of the valve, is it to take up wear on the end of the valve if it goes through the hardened surface.?

Did your Dad work at Ingles ship yard?

Yes Sam, it goes over the valve stem tip. When I think of it the valve could be be ground down a little less to allow for extra lift with the lash cap....we'll have to see. I cannot remember the exact yard but it was US Navy. I'll give him a call tomorrow. The lash caps are for those old valves with good OD. ( So yes to your question). Anyway I'm trying to set up a service for good valves(stem OD is within spec) but bad tips......I think it could be helpful to many restores/vintage racers etc etc.

[Sam Green Racing]

Mike, I must say I have never known a tip wear out, not on any of my motors but on some old British bikes they did.
When this happened they would have them stelite welded and reground.
I have heard the term lash caps but did'nt know what they where.
I take it it would be a small cup machined to go over the valve tip then hardened.
I would think it would have to be a tight fit to stop oil getting inside and creating a false valve reading.
Would it be cost efective, would have thought the presission engineering of such a small item against the cost of a new valve
If like you said machine a little off the stem, make the cap and two lots of shipping ?
You would have to cost it out very carefully,then do your own development work before you put them on sale,the last thing you want is for one to come adrift and wreck a customers motor, could be a costly exersize.
But knowing your workmanship, you would probably make them work.
Good luck with the idea.

Regards  Sam.

[MRieck]

Sam, I've seen the tips wear out on older valves that use rocker arms and a threaded aduster. Usually it is secondary to lack of oil changes and/or rextended high engine temp. What is nice about the lash cap is they easily be replaced, are relatively inexpensive and offer a more generous wiping surface. The cap actually forms a suction to the valve tip secondary to the oil and hangs on very well. I currently use the lash caps on my CB- the slight cushion of oil between the tip and the cap makes for a slightly quieter valve train(especially when combined with the M3 cam chain tensioner). I've found a good supplier....we'll see if its cost effective. I mention the F3/F3 valves becuase they are no longer available and the stem OD is an odd size. It would be very difficult and expensive to have custom valves made for these bikes

[Sam Green Racing]

Mike, go for it, anything that helps keep the old bikes on the road or track has got to be a plus.
I am doing it all the time with my first love the littly honda Benlys.
If I see stock that is priced reasonable in the states I buy it providing it dont cost to much to import.
Good luck with the project.

Regards Sam.

[kghost]

KibbleWhite Could't make you a set of valves?

[Sam Green Racing]

Hey Ghosty,

Anyone can make you valves, it's just at what price.
How ya doin, are you on for the night? it's been quiet for the last six hours.

Sam.

[kghost]

Yep.

Just checkin out the backlog.

[superchode]

i'd be interested in how this works and what the cost ends up being. thanks for the note, keep us informed.