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Valve grinding... Not allowed or...? (Read 339 times)

Mekh Full Member Offline Suzuki Savage Rocks! Posts: 128 Denmark Gender:	Re: Valve grinding... Not allowed or...? Reply #15 - 11/13/16 at 12:03:17 I'm considering it, but I really, really, really love the low end torque in this engine and would hate to compromise that. Haven't gotten around to ask into this yet.
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Mekh Full Member Offline Suzuki Savage Rocks! Posts: 128 Denmark Gender:	Re: Valve grinding... Not allowed or...? Reply #16 - 11/19/16 at 06:33:16 Yesterday I lapped my valves and wanted to show a few photos of it.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5097 Manteca , CA Gender:	Re: Valve grinding... Not allowed or...? Reply #17 - 11/19/16 at 11:28:57 Looks good from what I can see,great way to see how well your valves will seal. It's a task but an easy one, kinda fun
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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10661 Oklahoma Gender:	Re: Valve grinding... Not allowed or...? Reply #18 - 11/19/16 at 13:42:32 The valve pictured in the middle photo, has that one been lapped ? If so, what is with all the spottiness ?
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Mekh Full Member Offline Suzuki Savage Rocks! Posts: 128 Denmark Gender:	Re: Valve grinding... Not allowed or...? Reply #19 - 11/19/16 at 13:53:16 The spotted one was only lapped a bit, took a photo to show just how uneven the surface was. Afterwards I finished it.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Valve grinding... Not allowed or...? Reply #20 - 11/22/16 at 02:48:48 Before I even pull a valve spring I put the head upside down and level and dump gas in it. Leaky valves will be exposed.
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Mekh Full Member Offline Suzuki Savage Rocks! Posts: 128 Denmark Gender:	Re: Valve grinding... Not allowed or...? Reply #21 - 11/22/16 at 11:26:39 I tried that and the exhaust valves leaked quite a bit. The inlet valves not so much. The exhaust valves required a bit more work, while I just lapped the inlet valves a bit with the fine grinding paste.
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LANCER

Serious Thumper
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Savage Beast
Performance Parts

Posts: 10661
Oklahoma
Gender: male

Re: Valve grinding... Not allowed or...?
Reply #22 - 11/22/16 at 12:20:28

I recently got a tool to help speed up the lapping process.
It is hand operated.
It has 3 heads for various valve sizes.
The head attaches to the valve by a built in vacuum pump.
It cost a few bucks and is pretty well made.
The body is a tough plastic material.
Just one push on the top while holding it firmly to the valve head and it is attached. The valve head does need to be clean of course.

I purchased it from Goodson Tools and Supplies for Engine Builders
It is called a VLV-50 Vacuum-Style Lapping Stick
It was $32.99, and $42.58 with shipping.

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Kenny G Serious Thumper Offline SuzukiSavage.com The Singles Club...LOL Posts: 1754 Robson Ranch, Denton, Texas Gender:	Re: Valve grinding... Not allowed or...? Reply #23 - 11/22/16 at 13:22:23 Lancer, That tool sure beats that darned old thing KD tools made. Do you remember, they were painted orange with a suction cup on both ends. The good old days. Kenny G
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LANCER

Serious Thumper
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Savage Beast
Performance Parts

Posts: 10661
Oklahoma
Gender: male

Re: Valve grinding... Not allowed or...?
Reply #24 - 11/22/16 at 13:28:28

Kenny G wrote on 11/22/16 at 13:22:23:

Lancer,

That tool sure beats that darned old thing KD tools made.

Do you remember, they were painted orange with a suction cup on both ends. The good old days.

Kenny G

I've got the old style but with a brown handle, and yes, I like this one much more.
The old style rubber stoppers on each end just DID NOT hold at all.
I would take a piece of Gorilla tape and fold it and use that to keep the thing stuck to the valve. It would work ... sort of.

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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5097 Manteca , CA Gender:	Re: Valve grinding... Not allowed or...? Reply #25 - 11/22/16 at 21:06:39 I just use a rubber hose that fits tight at top of the valve stem and my trusty can of coarse & fine lapping compound and BEER !
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