Valve Seat Removal

kb22
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kb22
Hey everyone as the title states, I tore the bike down to check everything out and found some pitting seats and kw valves. So I figured I would do some delwest and moldstar 90. Which come to find out, they are fairly cheap to have them cut out. But I need to get various measurements to have moldstar get the seats within a workable size. Is there any easy way to get these out? Or is there a specific machine shop that can yank these out? I appreciate any feed back and help!

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motoracer58 3/8/2021 6:06pm
3/8/2021 6:06pm
this is not something you can DIY without having a machine. Send the head to a reputable shop to have the head rebuilt
kb22
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kb22 3/8/2021 6:16pm
3/8/2021 6:16pm
If I send it off I will still have to wait 5 weeks for the valve seats to be made and be charged significantly more than 21 a seat. Is there not a specific machine shop that can get them removed? Appreciate the help either way.
motoracer58 3/8/2021 6:31pm
3/8/2021 6:31pm Edited Date/Time 3/8/2021 6:33pm
Most good shops will have seats in stock. Even if you got the seat removed, how are you going to install and do a valve job on the new seat? The most efficient way to remove the old seats is to cut them out.
kb22
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kb22 3/8/2021 7:02pm
3/8/2021 7:02pm
I was going to use my dremmel...

Lol just kidding. I was going to have them removed so I could measure the actual seat as well as the bore so I could get the info to moldstar. They are currently 5 weeks out for production so once I got them in I was going to send everything off to millennium to Install, cut and seat the del west valves. I think I might try and measure them in the head and just over measure so when they add the interference I should have more than enough material for millennium to work with.

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harescrambled 3/8/2021 7:43pm
3/8/2021 7:43pm
Check out BNR Motorsports in North Lima, Ohio. They do seat replacements as well as most other engine work.
1
kb22
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kb22 3/9/2021 3:11am
3/9/2021 3:11am
Hey will do, thanks for the heads up!
motoracer58 3/9/2021 7:07am
3/9/2021 7:07am
You don't need to have custom seats made. Did you call millenium? They probably already have seats or any other high performance shop for bikes will most likely have them. It seems like you are over complicating the process
kb22
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kb22 3/9/2021 8:17am
3/9/2021 8:17am
They offer the beryllium copper seats, those would probably be the best route since I can’t get a proper measurement. I’ll have to get the moldstar on the next head rebuild. Appreciate the help every one!
krgperformance
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krgperformance 3/9/2021 10:04am
3/9/2021 10:04am
give krg performance 586-795-0144 a call
we keep seats in stock all seats are cnc machined to spec for the press fit
1 week turn around on head work if the valves are with it


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jaredkeller96
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Huntersville, NC US
jaredkeller96 3/9/2021 12:19pm
3/9/2021 12:19pm
kb22 wrote:
Hey everyone as the title states, I tore the bike down to check everything out and found some pitting seats and kw valves. So I figured...
Hey everyone as the title states, I tore the bike down to check everything out and found some pitting seats and kw valves. So I figured I would do some delwest and moldstar 90. Which come to find out, they are fairly cheap to have them cut out. But I need to get various measurements to have moldstar get the seats within a workable size. Is there any easy way to get these out? Or is there a specific machine shop that can yank these out? I appreciate any feed back and help!

Dean Baker Ex JGR Engine builder is offering his services. PM Me and ill get you in contact with him. He has the serdi and the knowledge. I suspect your lead time will be a lot shorter as well
SeaClassExpert 3/9/2021 6:25pm
3/9/2021 6:25pm
krgperformance wrote:
give krg performance 586-795-0144 a call we keep seats in stock all seats are cnc machined to spec for the press fit 1 week turn around...
give krg performance 586-795-0144 a call
we keep seats in stock all seats are cnc machined to spec for the press fit
1 week turn around on head work if the valves are with it


Do you guys still do turn down on stock hubs to remove casting lines?
1
kb22
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kb22 3/9/2021 10:26pm
3/9/2021 10:26pm
krgperformance wrote:
give krg performance 586-795-0144 a call we keep seats in stock all seats are cnc machined to spec for the press fit 1 week turn around...
give krg performance 586-795-0144 a call
we keep seats in stock all seats are cnc machined to spec for the press fit
1 week turn around on head work if the valves are with it


I’ll give you all a holler tomorrow in the after noon, thank you for reaching out.

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