What seats for Ti valves?

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Krooser
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What seats for Ti valves?

Post by Krooser » Sat Oct 14, 2017 9:18 pm

Got my used Ti valves yesterday... shipped in a Del West box... the instructions on the box say use a beryllium copper seat or another softer deal... what say you?
Last place in the B-main is better than anyplace in the grandstands...

PackardV8
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Re: What seats for Ti valves?

Post by PackardV8 » Sat Oct 14, 2017 9:34 pm

Most BeCu seats are huge. They're only practical in the race heads which have the extra aluminum in there to accept them. Maybe there exists a smaller diameter, smaller depth version, but those I've seen would be too large for the heads I would be using.

I was then told, "Are you going to be running 500 miles at 9,000 RPMs? That's where the BeCu seats are required. Your application doesn't need them. Just run on iron seats."
Jack Vines
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Obsolete Engineering

Krooser
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Re: What seats for Ti valves?

Post by Krooser » Sat Oct 14, 2017 10:40 pm

Personally I couldn't run 5 miles @ 9 rpm's.... :D

Thanks Jack....
Last place in the B-main is better than anyplace in the grandstands...

englertracing
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Re: What seats for Ti valves?

Post by englertracing » Sat Oct 14, 2017 10:40 pm

The copper seats are more for the exhaust side as the ti is lousy at transferring heat to the guides and seat, the copper sucks the heat out.

On uncoated ti valves they may reduce wear.

You can call performance alloy and have them make you some moldstar 90 exhaust seats.
It's a copper beryllium replacement that is supposed to be superior.

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Re: What seats for Ti valves?

Post by cspeier » Sat Oct 14, 2017 10:42 pm

Dura-Bond Killer B's and a CrN coated valve.

ZEOHSIX
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Re: What seats for Ti valves?

Post by ZEOHSIX » Sun Oct 15, 2017 5:41 pm

The GM LS7/9 used powdered metal seats with their coated Ti Del West valves. Cu Berylium is very hazardous and breathing or getting chips into your body can really mess you up.

statsystems
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Re: What seats for Ti valves?

Post by statsystems » Sun Oct 15, 2017 5:51 pm

I stopped using BC seats and started using nickel bronze IIRC. If I think of the name of the company I bought them from ill post it. The NB seats machined better and didn't produce the hazardous things that BC does.

Just thought of it.

Kibblewhite machine or something like that. It's defiantly Kibblewhite.

Krooser
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Re: What seats for Ti valves?

Post by Krooser » Sun Oct 15, 2017 9:24 pm

Great replies... thanks gentlemen.
Last place in the B-main is better than anyplace in the grandstands...

engineguyBill
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Re: What seats for Ti valves?

Post by engineguyBill » Mon Oct 16, 2017 11:26 pm

What say me? Me say that if the supplier recommends that you install Beryllium Copper seats, than you do that. OR call them and inquire about using alternative materials. Much more reliable than asking a bunch of us doofaces on the internet . . . . . . .
Bill

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ASE Master Certified Engine Machinist
AERA Certified Professional Engine Machinist

"Do what you can, with what you have, where you are."
- Theodore Roosevelt

Krooser
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Re: What seats for Ti valves?

Post by Krooser » Tue Oct 17, 2017 12:22 am

engineguyBill wrote:
Mon Oct 16, 2017 11:26 pm
What say me? Me say that if the supplier recommends that you install Beryllium Copper seats, than you do that. OR call them and inquire about using alternative materials. Much more reliable than asking a bunch of us doofaces on the internet . . . . . . .
Nodular iron, bronze or CuB or another softer metal... at least that's what Del West sez...
Last place in the B-main is better than anyplace in the grandstands...

sbcharlie
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Re: What seats for Ti valves?

Post by sbcharlie » Tue Oct 17, 2017 7:52 am

use mold star 90 is the only way to go sbc

englertracing
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Re: What seats for Ti valves?

Post by englertracing » Tue Oct 17, 2017 6:02 pm

Pretty sure Del west sells the ms90 seats

Performance alloy makes the ms90, for injection molding applications, but they actually have a valve seat department, they will make the seats to your specs.

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Re: What seats for Ti valves?

Post by Krooser » Tue Oct 17, 2017 8:40 pm

Last place in the B-main is better than anyplace in the grandstands...

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Re: What seats for Ti valves?

Post by cspeier » Tue Oct 17, 2017 8:44 pm

Done!

Image

Krooser
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Re: What seats for Ti valves?

Post by Krooser » Tue Oct 17, 2017 11:05 pm

Thanks Chad...
Last place in the B-main is better than anyplace in the grandstands...

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