Author Topic: Silver engine paint?  (Read 23593 times)

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Offline el pachuco

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Silver engine paint?
« on: April 14, 2016, 06:55:27 pm »
freshening up my new to me '75 and it's almost time to start work on beautifying the engine.

looking for silver paint brand endorsements and warnings to stay away from.
Which ones look most factory and wear well and what does not?

Offline rocs

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Re: Silver engine paint?
« Reply #1 on: April 14, 2016, 07:05:16 pm »
I went with VHT Engine paint.
VHT Engine Enamel Light Gray Primer
VHT Engine Enamel Nu-Cast Aluminum
1975 CB550k's

Offline Stev-o

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Re: Silver engine paint?
« Reply #2 on: April 14, 2016, 07:36:11 pm »
+1 VHT Aluminum. 

Tip: prep is key, be sure it is clean and smooth. 
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline riverfever

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Re: Silver engine paint?
« Reply #3 on: April 14, 2016, 07:42:10 pm »
Sorry to jump in but it's along the same lines. I have a valve cover that I hope to paint if the temps ever get warm enough to do so. I was going to buy some acetone and pour it into an aluminum turkey pan and then use scrub brushes to clean the cover as best as possible and then blow it dry. Would this be sufficient to clean it before primer and paint?
http://forums.sohc4.net/index.php?topic=127186.0

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Offline edwardmorris

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Re: Silver engine paint?
« Reply #4 on: April 14, 2016, 07:43:06 pm »
+1 on VHT Aluminum, prep is key, and VHT's zinc based primer (thin coat) will work best.

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Silver engine paint?
« Reply #5 on: April 14, 2016, 08:08:32 pm »
Sorry to jump in but it's along the same lines. I have a valve cover that I hope to paint if the temps ever get warm enough to do so. I was going to buy some acetone and pour it into an aluminum turkey pan and then use scrub brushes to clean the cover as best as possible and then blow it dry. Would this be sufficient to clean it before primer and paint?

Bring it by and play with the blast cabinet
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline CycleRanger

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Re: Silver engine paint?
« Reply #6 on: April 14, 2016, 08:27:44 pm »
I have used the Duplicolor DE1615 high heat silver on two engines. It's a dead match for the factory silver.
So far it's holding up well. (Almost 5 years for the 750.)
I only painted the cases.
The key is to get the engine very, very clean.
I did a lot of scrubbing and used a lot of acetone....

I have only used the VHT black, which it excellent.
I have no doubt the silver is as good too.
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Ericcb750

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Re: Silver engine paint?
« Reply #7 on: April 15, 2016, 03:23:00 am »
I also used the Duplicolor Aluminum ( #1612 , I think) and it is holding up very well. It was my first time painting an engine and I definitely did not prep it as well as I should have. But even considering this, the paint has held up. I've heard great things about VHT and PJ1 also. Best of luck on your project, if you have any questions....don't hesitate to ask. All the guys on the forum are awesome at helping and providing advice.
1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline MRieck

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Re: Silver engine paint?
« Reply #8 on: April 15, 2016, 04:03:43 am »
 I have used the Duplicolor on over a dozen engines and it matches very well and is durable. I bead blast the surfaces and do not use primer. I also use a heat gun on the dried finish for at least 5 cycles.
Owner of the "Million Dollar CB"

Offline madmtnmotors

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Re: Silver engine paint?
« Reply #9 on: April 15, 2016, 04:21:35 am »
The Duplicolor silver engine paint has worked well for me. I also do not use primer. Engine heat cures the paint nicely, if you can get it running without marring the paint! (it's not too difficult)

I have had quite a few compliments about the engine's appearance.


TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline PeWe

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Re: Silver engine paint?
« Reply #10 on: April 15, 2016, 05:10:45 am »
Motip Engine paint rattle can  "Aluminium" OK on my engine. Part no: 04093  EAN code:  8711347040933
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Stev-o

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Re: Silver engine paint?
« Reply #11 on: April 15, 2016, 05:28:30 am »
The Duplicolor silver engine paint has worked well for me. I also do not use primer. Engine heat cures the paint nicely, if you can get it running without marring the paint! (it's not too difficult)

I have had quite a few compliments about the engine's appearance.




Nice looking engine, Wilbur!  Curious on why no primer?  (Was not bare aluminum?)
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline madmtnmotors

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Re: Silver engine paint?
« Reply #12 on: April 15, 2016, 06:05:25 am »
Nice looking engine, Wilbur!  Curious on why no primer?  (Was not bare aluminum?)

Yep, no primer. The surface was a combination of bare aluminum with a smattering of original paint that was still intact. The paint is specifically designed for engines, and I believe is rated to 500 degrees. I skipped the primer since I did not see a high temp primer to compliment the engine paint (of course, I didn't look too hard). I've only got a little over 2000 miles so far, but it seems to be holding up well. There is a little yellowing right at the exhaust ports, but it is difficult to detect with the pipes in place.

I'm happy with it.  8)
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline CycleRanger

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Re: Silver engine paint?
« Reply #13 on: April 15, 2016, 06:36:51 am »
Yep, no primer for me either, just bare aluminum. I did not paint the head or the jugs.
« Last Edit: April 15, 2016, 06:40:56 am by CycleRanger »
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Stev-o

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Re: Silver engine paint?
« Reply #14 on: April 15, 2016, 06:42:40 am »
Yep, no primer for me either, just bare aluminum. I did not paint the head or the jugs.

Nice motor CR!   Guess I've wasted my money on primer, but no more.  Thanks guys.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline CycleRanger

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Re: Silver engine paint?
« Reply #15 on: April 15, 2016, 06:52:33 am »
Yep, no primer for me either, just bare aluminum. I did not paint the head or the jugs.

Nice motor CR!   Guess I've wasted my money on primer, but no more.  Thanks guys.

I also use the VHT black with no primer as well.
Disclaimer: No primer worked for me. It may not work in all instances.
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Stev-o

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Re: Silver engine paint?
« Reply #16 on: April 15, 2016, 06:54:02 am »
Yep, no primer for me either, just bare aluminum. I did not paint the head or the jugs.

Nice motor CR!   Guess I've wasted my money on primer, but no more.  Thanks guys.

I also use the VHT black with no primer as well.
Disclaimer: No primer worked for me. It may not work in all instances.

Too late, I'm blaming you if it fails!  BTW - Is that the motor for your K3?
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline CycleRanger

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Re: Silver engine paint?
« Reply #17 on: April 15, 2016, 06:55:06 am »
Yep, no primer for me either, just bare aluminum. I did not paint the head or the jugs.

Nice motor CR!   Guess I've wasted my money on primer, but no more.  Thanks guys.

I also use the VHT black with no primer as well.
Disclaimer: No primer worked for me. It may not work in all instances.

Too late, I'm blaming you if it fails!  BTW - Is that the motor for your K3?

I wish!  It's the K5 engine.
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline przjohn

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Re: Silver engine paint?
« Reply #18 on: April 15, 2016, 06:58:22 am »
I've used the VHT Color: Universal Aluminum on a few bikes with no primer but the finish was bead blasted first and have had great results. Baking is a must do IMO. I've also used it on hubs and dirt bike swing arms because the color goes well. Duplicolor or VHT I don't think you can go wrong if you follow the instructions.
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Offline Ericcb750

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Re: Silver engine paint?
« Reply #19 on: April 15, 2016, 07:21:22 am »
Wow I guess that's what they look like when they're prepped correctly and then painted. Mine came out pretty good for my first one but man, Those engines look freakin awesome!!!
1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline Stev-o

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Re: Silver engine paint?
« Reply #20 on: April 15, 2016, 07:44:04 am »
Wow I guess that's what they look like when they're prepped correctly and then painted. Mine came out pretty good for my first one but man, Those engines look freakin awesome!!!

Keep in mind that there were quite a few hours of aluminum polishing of the engine covers on those two motors, that is the icing on the cake!  Def a nice job, guys.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline CycleRanger

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Re: Silver engine paint?
« Reply #21 on: April 15, 2016, 07:49:12 am »

Keep in mind that there were quite a few hours of aluminum polishing of the engine covers on those two motors, that is the icing on the cake!  Def a nice job, guys.

Yes, the painting was the easy part compared to filthy, time-consuming polishing.
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline flybox1

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Re: Silver engine paint?
« Reply #22 on: April 15, 2016, 08:29:48 am »
Yep, no primer for me either, just bare aluminum. I did not paint the head or the jugs.

Nice motor CR!   Guess I've wasted my money on primer, but no more.  Thanks guys.

I also use the VHT black with no primer as well.
+1   No primer for me on my F3 w VHT satin black.  Cured them in the oven.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

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Offline madmtnmotors

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Re: Silver engine paint?
« Reply #23 on: April 15, 2016, 08:31:36 am »
Yes, the painting was the easy part compared to filthy, time-consuming polishing.

+1.

I can only polish to about 85% before losing interest. Not quite mirror finish, but I can live with it.  8)
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline CycleRanger

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Re: Silver engine paint?
« Reply #24 on: April 15, 2016, 09:50:54 am »
Yes, the painting was the easy part compared to filthy, time-consuming polishing.

+1.

I can only polish to about 85% before losing interest. Not quite mirror finish, but I can live with it.  8)

My HF budget rig is only capable of 85~90% no matter how long I work.
But yeah, if I wanted show quality I'd pay a professional and then fret every time I rode it.
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
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