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JIS Screwdriver P2 or P3?

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24 Jan 2019 20:11 #797452 by ERIK814
JIS Screwdriver P2 or P3? was created by ERIK814
I need a JIS screw driver to get to the carb holders. Two came in my tool bag and the larger one (~1/4 in diameter) fits the screw but I'm not sure if it is a P2 or P3. Does anyone know?

I need to purchase a shorter (stubby version?) since I have less than 6 inches between the air box and the carb holder.

Also, if you know of a good screw driver that is short I'm all ears.

1981 KZ 440 LTD Belt Drive (Late Model)
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24 Jan 2019 20:38 - 24 Jan 2019 20:39 #797454 by 650ed
Replied by 650ed on topic JIS Screwdriver P2 or P3?
Here are a couple things I use for JIS bits on my carbs.............





Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Last edit: 24 Jan 2019 20:39 by 650ed.
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  • Nessism
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25 Jan 2019 05:09 #797463 by Nessism
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25 Jan 2019 06:14 #797464 by 650ed
Replied by 650ed on topic JIS Screwdriver P2 or P3?

Nessism wrote: I believe those are #3 size.


I agree. Best bet is to try the #3 and make sure it fits properly. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • SWest
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25 Jan 2019 08:21 #797472 by SWest
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25 Jan 2019 09:24 #797477 by 650ed
Replied by 650ed on topic JIS Screwdriver P2 or P3?
I HIGHLY recommend that before attempting to remove the carb holder screws you soak them for 3 days with Kroil. On my KZ650 I did that and the screws came out with no problem at all. Otherwise you run a very serious risk of either breaking the screws, breaking the cylinder head, or damaging the screw heads. I've seen postings where other folks have done that type of damage by trying to force those screws out. Ed


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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26 Jan 2019 05:05 #797537 by KZB2 650
Replied by KZB2 650 on topic JIS Screwdriver P2 or P3?
I replaced these with allen heads many a year ago.

1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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26 Jan 2019 05:58 - 26 Jan 2019 06:00 #797538 by 650ed
Replied by 650ed on topic JIS Screwdriver P2 or P3?
I bought a BSA engine once and the screws that held the case covers on had been replaced with Allen head screws. Every one of the female threads in the engine that those screws fastened into were stripped! Remember that aluminum engine threads will always strip out before the steel screw threads, so if you use Allen head screws be very careful not to overtighten them because apparently that is very easy to do. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 26 Jan 2019 06:00 by 650ed.

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26 Jan 2019 13:56 - 26 Jan 2019 13:58 #797574 by ERIK814
Replied by ERIK814 on topic JIS Screwdriver P2 or P3?
Thanks for all this input.

I've been using Q-tips to apply Liquid Wrench all around the fasteners for a few days now. The top fasteners are blind but the bottom ones are exposed, so I've been hitting the back of the bottom fasteners with Liquid Wrench as well. I just bought a set of 1/4-inch JIS bits (#1 thru #3) as well as a ratchet set with a 3/8-inch drive to 1/4-inch bit adapter that should come mid- next week. The plan is too keep on applying Liquid Wrench every day until the bits /ratchet arrive, then take out the carbs and attempt to remove the fasteners. I also got some Loctite Blue 242 and plan to apply them to the bolts when I install the new holders.

Will let you know how it goes!

1981 KZ 440 LTD Belt Drive (Late Model)
Last edit: 26 Jan 2019 13:58 by ERIK814.

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15 Mar 2019 09:42 #800382 by TexasKZ
Replied by TexasKZ on topic JIS Screwdriver P2 or P3?
Update?

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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03 Apr 2019 13:35 #801454 by Mr. E
Replied by Mr. E on topic JIS Screwdriver P2 or P3?
I just recently purchased new JIS screwdrivers offline. Vessel is the company. Been using them for a month. Superb.

1978 kz1105 - the Rooster, 1981 KZ750 Chopper, 1975 KZ400 , 1984 GPZ750

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06 May 2019 17:41 #803428 by rickycodie
Replied by rickycodie on topic JIS Screwdriver P2 or P3?
i've bought the Vessel Impacta P2 and P3 from amazon. My opinion is that both are needed items for any japanese bike.

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