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Engine paint removal 12 Dec 2023 13:15 #892659

  • ronnieV
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Hey guys,anyone have a trick for removing engine paint without tearing it down? I have a low mileage engine that was painted black.Is there a safe chemical for this or is there a paint that is close to the aluminum color? The motor is out of the frame.
77 ltd1000 80 ltd1000 78kz1000a ,02 red zrx 12r, 94 cb1000 big one ,03 valkyrie (my couch) 65 olds 442

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Engine paint removal 12 Dec 2023 14:21 #892664

  • Warren3200gt
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This was painted black, a combination of good paint stripper, scotchbrite, a dremel wirebrush, and elbow grease did the trick. Not gonna pretend it was quick or exciting to do but the results speak for themselves I think. 

Z1000J2 somewhat modified!

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Last edit: by Warren3200gt.

Engine paint removal 12 Dec 2023 15:51 #892677

  • hardrockminer
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I would pull the engine apart and vapour blast the parts.
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.
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Engine paint removal 12 Dec 2023 16:18 #892679

  • Mikaw
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This was painted black, a combination of good paint stripper, scotchbrite, a dremel wirebrush, and elbow grease did the trick. Not gonna pretend it was quick or exciting to do but the results speak for themselves I think. 
The time required to pull that off had to be extensive. We’re not worthy!!! 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Engine paint removal 12 Dec 2023 18:47 #892682

  • Mikaw
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I’ve had ok success with the two on the left. Will be trying the rustoleum next. Waiting for 2 sets of hand controls to come back from vapor balst. They are just blasting the inside to remove rust and corrosion. I’m going to chemically strip the outside to help preserve the letters.

 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Engine paint removal 13 Dec 2023 07:16 #892692

  • slmjim+Z1BEBE
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That's a tall order.

If you're intent on stripping without disassembly, drive rubber stoppers, NOT wood corks, very firmly into intake & exhaust ports.  Junk spark plugs in the plug holes.  Do both regardless of method chosen.

Chemical - Aircraft Stripper.  Do it outside, wear hazmat gloves & eye pro.  Use a stand at working level, so you're not on hands & knees.  Take your time;  It's gonna take days, multiple brass toothbrushes, some Q-tips & flux brushes. And some cussin'.

If you can take it to a commercial surface prep operation, do soda blast.  It won't change the surface appearance of the bare aluminum significantly, but must be neutralized afterward.  Next best media would be crushed nut shell; takes longer $$.  Dry crushed glass will leave a more polished finish.  Sand blast will leave a very dull finish.

Honda used silver motor paint on some bikes, but we don't know anything about it.  Surface prep would be very critical.

Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1972 Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

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on all things Z1, Z2 and KZ900.

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Engine paint removal 13 Dec 2023 09:36 #892697

  • martin_csr
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Valve cover as purchased.


After. used Jasco premium paint & epoxy stripper from Lowes. not sure if the product is still available. It's been more than a few years. 
Then dremel w jeweler's brass wire wheels. needs more work. I didn't try polishing it w mothers or anything which might be all it needs.
It doesn't look anywhere near as good as the pic Mikaw posted. It was a lot of work.

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Engine paint removal 26 Mar 2024 08:06 #896901

  • ThatGPzGuy
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I stripped my engine cases down and this stuff did an OK job  Citri Strip
It helps to wrap it up in something. I used a large trash bag and let it sit overnight. Then I took my pressure washer to it.
It took some time but did a decent job.
 
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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Engine paint removal 26 Mar 2024 14:02 #896920

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Looks good. No matter what you use it can be a messy job. Are you going to have it vapor blasted now?

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Engine paint removal 26 Mar 2024 17:51 #896938

  • slmjim+Z1BEBE
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I stripped my engine cases down and this stuff did an OK job  Citri Strip
 
Was that the OEM motor paint?

Good Ridfn'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1972 Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.

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Engine paint removal 27 Mar 2024 05:08 #896949

  • ThatGPzGuy
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Looks good. No matter what you use it can be a messy job. Are you going to have it vapor blasted now?
No. It's a GPz so it is getting the black treatment. 
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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Engine paint removal 27 Mar 2024 05:09 #896950

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I stripped my engine cases down and this stuff did an OK job  Citri Strip

 
Was that the OEM motor paint?

Good Ridfn'
slmjim & Z1BEBE
Yes, plus some additional engine paint over the 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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