Titanum valve tips

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swampbuggy
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Titanum valve tips

Post by swampbuggy » Wed May 16, 2018 8:48 pm

What is the smallest stem size that one can employ hard steel tips ? Thanks to all, Mark H.

swampbuggy
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Re: Titanum valve tips

Post by swampbuggy » Wed May 16, 2018 8:51 pm

Titanium, sorry.

Krooser
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Re: Titanum valve tips

Post by Krooser » Wed May 16, 2018 10:15 pm

I believe my 6mm xceledyn's have them... I'll have to check.

Update... 6's don't but the 7's do.

I'll have to have these cut down to work on anything I screw together so lash caps will be in place.
Last place in the B-main is better than anyplace in the grandstands...

Warp Speed
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Re: Titanum valve tips

Post by Warp Speed » Wed May 16, 2018 10:45 pm

7mm is about it, but it is still getting a little sketchy IMO
Lash caps are good, except for the weight! Lol
But if you go small, it's just the way it is.

swampbuggy
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Re: Titanum valve tips

Post by swampbuggy » Wed May 16, 2018 11:31 pm

Going with smaller stem size was about keeping the weight down but I'd rather stay away from the last cap if I could so I don't know yet another hard decision

Momus
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Re: Titanum valve tips

Post by Momus » Thu May 17, 2018 2:22 am

I have steel lash caps on 4.5 mm Ti valves. Engine is 2 valve OHC with rockers and screw lash. 15000 rpm reliably.
Last edited by Momus on Thu May 17, 2018 3:11 am, edited 1 time in total.

swampbuggy
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Re: Titanum valve tips

Post by swampbuggy » Thu May 17, 2018 2:55 am

In what engine what cylinder head and what RPM

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Re: Titanum valve tips

Post by Momus » Thu May 17, 2018 3:12 am

Small OHC Honda horizontal. Takegawa head. 15k.

swampbuggy
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Re: Titanum valve tips

Post by swampbuggy » Thu May 17, 2018 5:12 am

Ahhhhh, yeah thought it might be a mcycle.

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