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General Category >> Rubber Side Down! >> Versy's Valve Adjustment Tool
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Message started by verslagen1 on 10/21/16 at 22:39:28

Title: Versy's Valve Adjustment Tool
Post by verslagen1 on 10/21/16 at 22:39:28

This is the doohickie that I use to adjust my valves.
http://www.savageriders.com/verslagen/ValveAdj/vvat-top%20view.jpg

http://www.savageriders.com/verslagen/ValveAdj/vvat-side%20view.jpg

Take a fender washer with a 1/4" hole in and press a screwdriver bit in it.
I scribed 2 sets of lines 90° apart then put notches in the sides cause when it's dark you can't see the lines. 90° turns out to be about .006" so make a few adjustments with it and scribe off your favorite gap.

To use:
loosen the locknut with a wrench, you can leave it in place.
put the screwdriver bit in the slot and run the adjustment screw down to the valve.
eyeball a scribe line with a convenient feature then turn the tool to your favorite adjustment point.

Title: Re: Versy's Valve Adjustment Tool
Post by Kenny G on 10/21/16 at 23:17:19

Verslagen,

That is very clever tool....

I am going to make one tomorrow.

Thank You For Posting This.

Kenny G :)

Title: Re: Versy's Valve Adjustment Tool
Post by verslagen1 on 10/22/16 at 08:38:52

You can see the screwdriver bit is a special one with a large head.
It came in a kit with a ratchet driver that I got a long time ago.
I've been thinking of replacing the fender washer with a purpose built disk that is larger.
Big enough so it clears the frame so turning it is easier.

Title: Re: Versy's Valve Adjustment Tool
Post by verslagen1 on 10/22/16 at 09:57:43

here's a bit that might work

http://www.homedepot.com/catalog/productImages/1000/a9/a9eddd2f-8f8e-48fd-aad5-7c61d72d071f_1000.jpg
http://www.homedepot.com/p/TEKTON-Impact-Screwdriver-Bit-Set-8-Piece-2915/205674681?cm_mmc=CJ-_-1319015-_-10368321&AID=10368321&PID=1319015&SID=1113085824518&gclsrc=ds&gclid=CKn33aLx7s8CFYHSMgodJ4MGug&cj=true

Title: Re: Versy's Valve Adjustment Tool
Post by Kenny G on 10/22/16 at 10:43:01

Verslagen,

I have a complete set of Brownell's gunsmithing screwdriver bits.
I will choose a bit that fits snugly and go from there.

The bit that you are using now looks like it came from a Chapman's set.

Kenny G

Title: Re: Versy's Valve Adjustment Tool
Post by justin_o_guy2 on 10/25/16 at 02:51:26

Dadgumm clever gizmo, Versy.

Title: Re: Versy's Valve Adjustment Tool
Post by youzguyz on 10/25/16 at 03:04:55

352631302F2224262D72430 wrote:

I scribed 2 sets of lines 90° apart then put notches in the sides cause when it's dark you can't see the lines. 90° turns out to be about 6° so make a few adjustments with it and scribe off your favorite gap.

To use:
loosen the locknut with a wrench, you can leave it in place.
put the screwdriver bit in the slot and run the adjustment screw down to the valve.
eyeball a scribe line with a convenient feature then turn the tool to your favorite adjustment point.

I'm a bit confused. While I understand the concept, I don't understand the 90 and 6 thing. Are you saying 90 degree of turn is about .006" in gap?

Main main aggravation with valves is that the adjustment screw moves when you tighten the nut. I need to make one of them other dohickey things (tappet wrench).. or find one that actually fits and works on the LS650.. in the frame.

Title: Re: Versy's Valve Adjustment Tool
Post by justin_o_guy2 on 10/25/16 at 03:22:19

I bought two bent screwdriver.
Philips on one end, flat on the other.
Used a grinder to shape the Philips ends into flat blades , aimed different directions. I can hold the adjustment as I tighten the jam nut.
If the adjuster threads aren't close fitting that will open the adjustment up a hair.

Title: Re: Versy's Valve Adjustment Tool
Post by verslagen1 on 10/25/16 at 07:20:13

4A5C464954464A49330 wrote:

You're right... my bad... fixed, should be 90° is about .006"

With this doohickie, you can hold the adjustment screw in position while you lock the nut down.
and I just use a standard craftsman combo wrench.

Title: Re: Versy's Valve Adjustment Tool
Post by Armen on 10/26/16 at 17:13:59

Youzguyz-
To translate Verslagen's very clever method:
Thread pitch of the valve adjuster is .75mm
Meaning one full turn is .75mm
1/4 turn would be .1875mm
.1875 divided by 25.4 equals .00738"

The #2 and 3 exhaust valves on single cam CB750 Hondas are a real PITA to get to. We used to use this kind of technique on those bikes.