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PJ1...?

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15 Mar 2016 10:49 #715535 by davido
PJ1...? was created by davido
I painted my brake calipers last summer with (new formula) PJ1. Ill soon be ready to put them on the bike and thought that maybe I should throw them in the oven to cure the paint. Does anybody know how long and at what volume I should set the oven to?
There was nothing on the can about cure time/temperature so I emailed PJ1 themselves but they must be too busy counting their money to answer emails.

www.kzrider.com/forum/11-projects/594313-csr1000-project-build
CB550 (1978)
CB500/4 (1972)*
KZ1000CSR (1981)
XT 600E (1999)
TDM900 (2003)

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15 Mar 2016 11:23 #715541 by Rockranch
Replied by Rockranch on topic PJ1...?
Try calling them?...

480-991-8002
Customer Service:
Mon - Fri 9:00 - 5:00 PM

.........................................Mike

Vroom-vroom!!!

(2)-1976 KZ900B-LTD's
1-all stock low mileage...
1 modified
1977 KZ1000 (awaiting resurrection!) :)
...and an old school Honda CB750 Chopper is next on my bucket list!

Oh...and a Pocket Rocket lol!!!

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15 Mar 2016 11:28 - 15 Mar 2016 11:29 #715543 by zed1015
Replied by zed1015 on topic PJ1...?
The "NEW" PJ1 doesn't behave like the old stuff (they took out all the good bits ) and it doesn't like being baked anymore.
PJ1 never actually recommended baking it anyway, that is something I experimented with many years ago with good results which has now become common practice amongst restorers etc who have spread the word after reading my resto and project threads over the years .
With the original (Satin black ) I would lightly pre-heat the part (to sweat out any moisture), give it enough coats for the required finish (Thicker = Glossier) , let it cure overnight and then bake it until the surface visually wetted after which I let it cool naturally and slowly.
This gave a tough solvent/petrol resistant finish which looked very close to the original Kawasaki semi gloss black.
I have engines done like this which still look fresh after over 20 years of all weather riding.
The new PJ1 is awful and won't resist solvent or last very long whatever you do.
During extensive tests I have now found that Simoniz/Sperex Tough black or Wurth Satin are the closest thing to the old PJ1 and these respond well to baking
The Simoniz/Sperex is my prefered choice and is very close to the old PJ1, the results can be seen in my Z900 café racer thread.

AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-





Last edit: 15 Mar 2016 11:29 by zed1015.

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15 Mar 2016 11:30 - 16 Mar 2016 07:44 #715544 by martin_csr
Replied by martin_csr on topic PJ1...?
After painting mine with Duplicolor brake calliper paint (rattlecan) & giving the parts a few days to cure at room temperature, I baked them in the oven at 150o for 20 minutes, then 225o for another 20 minutes. The stuff is supposed to withstand temps up to 500o, so I probably could've gone higher.

PS: the paint has held up well but it peeled a little around the bleeder from brake fluid. after tightening the bleeder, I sprayed some of the paint into a cup & did a touch-up with a plastic model kit brush.
Last edit: 16 Mar 2016 07:44 by martin_csr.

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  • Tyrell Corp
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  • "You were made as well as we could make you"
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20 Mar 2016 12:17 - 20 Mar 2016 12:18 #716351 by Tyrell Corp
Replied by Tyrell Corp on topic PJ1...?
I baked some 'new' satin black PJ1 on some casings and it looked really good, not sure how it will withstand use when on a running motor.

The 'old' PJ1' was great, as above it lasts for years if prepped right. They certainly have changed the formulation I know.

1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
Last edit: 20 Mar 2016 12:18 by Tyrell Corp.

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20 Mar 2016 12:44 #716354 by davido
Replied by davido on topic PJ1...?

Tyrell Corp wrote: I baked some 'new' satin black PJ1 on some casings and it looked really good, not sure how it will withstand use when on a running motor.

The 'old' PJ1' was great, as above it lasts for years if prepped right. They certainly have changed the formulation I know.


What temperature did you set it at and for how long?

www.kzrider.com/forum/11-projects/594313-csr1000-project-build
CB550 (1978)
CB500/4 (1972)*
KZ1000CSR (1981)
XT 600E (1999)
TDM900 (2003)

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  • ThatGPzGuy
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  • More Sparky than Speed Racer
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20 Mar 2016 13:47 #716357 by ThatGPzGuy
Replied by ThatGPzGuy on topic PJ1...?
I used PJ1 and baked it at 350n for an hour. Not sure if it was the old formula or the new.
[IMG


Still looks great after 3 years

Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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21 Mar 2016 05:54 - 21 Mar 2016 13:09 #716482 by Rockranch
Replied by Rockranch on topic PJ1...?
.

(2)-1976 KZ900B-LTD's
1-all stock low mileage...
1 modified
1977 KZ1000 (awaiting resurrection!) :)
...and an old school Honda CB750 Chopper is next on my bucket list!

Oh...and a Pocket Rocket lol!!!
Last edit: 21 Mar 2016 13:09 by Rockranch. Reason: msp

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  • Tyrell Corp
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21 Mar 2016 12:11 - 21 Mar 2016 12:20 #716563 by Tyrell Corp
Replied by Tyrell Corp on topic PJ1...?
I put my prepped and degreased bits on aluminium foil under the grill until hot,, sprayed on a light tack coat, then a heavier one a couple of mins later, bake them a bit more, leave it for 5 mins, another coat...repeat.... maybe half a dozen times. Do this in a well ventilated kitchen. solvent flashes off very quick when parts are hot, you can see as it turns from gloss to satin.

I used three cans on all my z1000 outer engine casings, camcover and other bits. The last bits at the end of a can spurt out and ruin your finish.

Just like cooking fish fingers under a grill.

1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
Last edit: 21 Mar 2016 12:20 by Tyrell Corp.

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