EVO All Evo Model Discussion

Valve Guide Seal Installation Tool

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Old Feb 3, 2020 | 08:11 PM
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Default Valve Guide Seal Installation Tool

Hey Folks!

Do I actually need a special tool to install valve guide seals on my '93 80 Evo?

If so, do I need to spend nearly $60 for the JIMS tool (P/N 34643-84)?

If not, what less expensive tool should I buy? Will the V-Twin Manufacturing P/N 16-1746 work? It's only $15.

Thanks!

-Dave
 
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Old Feb 3, 2020 | 08:38 PM
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With OEM type seals, then yes, you need the tool. The plastic (Vtwin mfg) type will work fine for casual use. If you're doing it for a living, get the good one.

If you're using the Viton type valve seals (Cometic, Jims, James, Falcon) they're available everywhere and work quite well, you don't need a tool at all unless you're doing it "on engine." If so, a 7/16", 12 point deep socket will work just fine.
 
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Old Feb 4, 2020 | 04:57 AM
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Originally Posted by t150vej
With OEM type seals, then yes, you need the tool. The plastic (Vtwin mfg) type will work fine for casual use. If you're doing it for a living, get the good one.

If you're using the Viton type valve seals (Cometic, Jims, James, Falcon) they're available everywhere and work quite well, you don't need a tool at all unless you're doing it "on engine." If so, a 7/16", 12 point deep socket will work just fine.
What he said above! Use the newer, softer viton style. Just make sure they have not been sitting on a shelf for 10 years prior to you getting them. There are some of the install tools (aluminum) for the older style floating around for around 20 bucks, but again the soft style is the way to go. YD
 
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Old Feb 5, 2020 | 01:49 PM
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Originally Posted by t150vej
With OEM type seals, then yes, you need the tool. The plastic (Vtwin mfg) type will work fine for casual use. If you're doing it for a living, get the good one.

If you're using the Viton type valve seals (Cometic, Jims, James, Falcon) they're available everywhere and work quite well, you don't need a tool at all unless you're doing it "on engine." If so, a 7/16", 12 point deep socket will work just fine.
Yep! I'm using Cometic seals. Thanks for the advice!
 
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Old Feb 5, 2020 | 02:05 PM
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Originally Posted by drm1978
Yep! I'm using Cometic seals. Thanks for the advice!
Cool.
Mark the guides 1/4" from the top and push them on with your fingers down to the mark. Some "say" you don't necessarily need a protective sleeve on the valve stem with that type, but I never chance it.
 
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Old Feb 5, 2020 | 07:45 PM
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Originally Posted by t150vej
Cool.
Mark the guides 1/4" from the top and push them on with your fingers down to the mark. Some "say" you don't necessarily need a protective sleeve on the valve stem with that type, but I never chance it.
Thanks again!
 
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Old Apr 25, 2020 | 05:34 PM
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Originally Posted by drm1978
Thanks again!
I still need to use the Loctite 620 with Cometic seals, correct?
 
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Old Apr 25, 2020 | 05:46 PM
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Originally Posted by drm1978
I still need to use the Loctite 620 with Cometic seals, correct?
???????????
NO sealer of any type with valve seals.
 
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Old Apr 25, 2020 | 06:40 PM
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Originally Posted by t150vej
???????????
NO sealer of any type with valve seals.
Really? That's what the Service Manual says. Page 3-27, "Apply a small amount of RC 620 Loctite (green) retaining compound to outside diameter of guide near the top of guide. Place a protective sleeve over the valve stem keeper grooves. Coat the sleeve with oil and place a new seal over the valve stem." Does this only apply to the OEM style seals?
 
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Old Apr 25, 2020 | 06:47 PM
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You could do that with OEM seals since they're metal collars, but the ones you have are rubber coated inside the collar. Don't use any chemicals on rubber other than lube, where applicable... But do use a protective sleeve (or a single turn of cellophane tape) on the stem at the lock groove.
 

Last edited by t150vej; Apr 25, 2020 at 06:48 PM.
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