Coating for Titanium valves

[swampbuggy]

Going to be buying Del-West Titanium valves for S.B.C. Dart 9 degree heads 2.200" w/5/16" stem w/hard tips Exh. 1.625" w/5/16" stem w/hard tips, length yet to be determined. I know that there are "at least" two different coatings for valve stems, was wanting to get opinions on which coating would be best suited for each type of valve---Intake and Exhaust ? Guides are top quality bronze alloy, do not know EXACTLY what it is ? Valve seals will be the kind that allow a SMALL amount of oil to reach the guides. Thanks to all who respond to my post, Mark H.

[user-30257]

Valve guides are integral o-ring? Why not tell delwest the application, usage, preferred clearance, fuel type and hp potential.

There are stem coatings, lock coatings, head coatings neck. Etc. You could spend a lot of money and not see a difference.

[Charliesauto]

Going to be buying Del-West Titanium valves for S.B.C. Dart 9 degree heads 2.200" w/5/16" stem w/hard tips Exh. 1.625" w/5/16" stem w/hard tips, length yet to be determined. I know that there are "at least" two different coatings for valve stems, was wanting to get opinions on which coating would be best suited for each type of valve---Intake and Exhaust ? Guides are top quality bronze alloy, do not know EXACTLY what it is ? Valve seals will be the kind that allow a SMALL amount of oil to reach the guides. Thanks to all who respond to my post, Mark H.

Del West has traditionally manufactured valves by undercutting the stems and filling with moly. A few years ago they started offering valves with no moly in the stem, they just coat the entire valve, stem included.
I have used both, took a little while to get my nerve up to try the newer version.

Whichever stem coating you decide on, definitely get the head/seat area coated. A coated valve will last significantly longer and the seats will be happier.

[englertracing]

I think they offer chromium nitride as standard, and titanium aluminum nitride as an upgrade.

And i think they are also doing optional dlc stems

[user-30257]

I think they offer chromium nitride as standard, and titanium aluminum nitride as an upgrade.

And i think they are also doing optional dlc stems

They have a few more than you may think. It's best to call. They have a Teflon type, moly, CRN,DLC, cermet, some anodizing.

[englertracing]

Yeah im sure they do,
But anodize is trash, thats the budget coating that wears out fast on stock mx bike ti valves.
Bettet than uncoated but still garbage.

Molly to me is oldschool and what was ran on old stuff with uncoated heads.

Im not really seeing why you wouldnt just chromium nitride them

[Neal Arnold]

The full coverage Crn is the best choice! They can take a beating and still look brand new.

[user-17438]

Going to be buying Del-West Titanium valves for S.B.C. Dart 9 degree heads 2.200" w/5/16" stem w/hard tips Exh. 1.625" w/5/16" stem w/hard tips, length yet to be determined. I know that there are "at least" two different coatings for valve stems, was wanting to get opinions on which coating would be best suited for each type of valve---Intake and Exhaust ? Guides are top quality bronze alloy, do not know EXACTLY what it is ? Valve seals will be the kind that allow a SMALL amount of oil to reach the guides. Thanks to all who respond to my post, Mark H.

What is the build?
Why not just ask the company you are buying from?
Maybe you need DLC tips maybe you don't.
Maybe you want Ceramic coating. Maybe you don't need.

If you have an unlimited budget, tell them. If you don't, tell them. Simple.

[englertracing]

I was told the way to go was titanium aluminum nitride, and chromium nitride, one on the stem, one on the head, i do not remember which was supposed to be where.
Anyone know?
And how about dlc stems? Slicker and harder?

Mtn
What is the ceramic coating? Like a heat resistant coating?

[Warp Speed]

Crn or DLC are the best valve head coatings. Moly is still used for stem coating on many race valves used today.
I would contact Del West or Xceldyne directly and discuss what they recommend.
Who is your point of contact at Del West?

[swampbuggy]

Chad at SRI performance....per Don L. ????? Thanks Mark H.

[swampbuggy]

Do not know where in the h@#$ the star symbol came from should have been Chad.

[cboggs]

I still have the best luck with fully coated DLC valves in extreme conditions.

The best advice is to discuss with your valve supplier as they see 100X the volume
then we do in individual shops.

[swampbuggy]

Thank you Mr. Boggs for your reply, i feel honored. Mark H. BTW i met you at the PRI show a few yrs. back in Orlando.

[cboggs]

Thank you Mr. Boggs for your reply, i feel honored. Mark H. BTW i met you at the PRI show a few yrs. back in Orlando.

Oh Hi Mark!

Yea been a while since I hung out on Speedtalk, kinda nice to see the old gang here.

Curtis