Clear coat on a new master cylinder - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Greasey Harley · 10-25-2020, 02:04 AM

I just put a brake master cylinder in my 73 Jimmy. After thoroughly cleaning it, I applied 2 coats of clear coat (like I always do) before bench bleeding it.
It occurred to me, not everybody realizes this is an option.
I have been clear coating new master cylinders for ...20 years, maybe?
I thoroughly clean the outside of the master cylinder with brake clean, let it dry, and spray it with 2 coats of clear spray paint.
It ain't perfect, but it does add some level of rust prevention.
I have had master cylinders that were [at least] 5 years old with almost zero rust.
Anyways just thought I'd share that tip.

Results may vary

-Russ

blazer2007 · 10-25-2020, 08:47 AM

doesn,t the brake fluid eat the clear ?

**jayoldschool** · 10-25-2020, 10:25 AM

Only if you spill the brake fluid ;-)

I cleared the natural aluminum intake on one of my 350s 25 years ago. Still looks great.

LS short box · 10-25-2020, 04:41 PM

Clear coated many iron masters even back in the day when I was a tech at a Chev dealer ship. The service manager gave me the tip. If you get some brake fluid on it its easy to clean and touch up. Rusty masters are not pretty.

**MySons68C20** · 10-25-2020, 05:37 PM

I clear coated my original 307 valve covers on my first 68 42 years ago and they never had a hint of rust.

**mongocanfly** · 10-25-2020, 09:33 PM

I used Eastwood master cyl paint on mine..also painted my calipers with it as wel.so far it still looks good..has a raw cast iron look to it..
Never thought about using just clear...

tinydb84 · 10-26-2020, 03:11 PM

I shot mine with SPI epoxy. Its only had fluid in it for a few months and I don't think I spilled any but it looks great.

SunSoaked · 11-09-2020, 12:21 PM

I prefer the "patina" look, lol.

SCOTI · 11-10-2020, 11:23 AM

Quote:

Originally Posted by SunSoaked

I prefer the "patina" look, lol.

Yeah.... But AZ has that "dry-heat" so it's only 'patina' out on the West Coast LoL.

72c20customcamper · 11-12-2020, 08:48 PM

Use cast blast on iron parts . Summit valve covers are what my builder puts on to dino I've changed them since

10-25-2020, 02:04 AM	#1
Greasey Harley Registered User Join Date: May 2013 Location: Post Falls, ID Posts: 898	Clear coat on a new master cylinder I just put a brake master cylinder in my 73 Jimmy. After thoroughly cleaning it, I applied 2 coats of clear coat (like I always do) before bench bleeding it. It occurred to me, not everybody realizes this is an option. I have been clear coating new master cylinders for ...20 years, maybe? I thoroughly clean the outside of the master cylinder with brake clean, let it dry, and spray it with 2 coats of clear spray paint. It ain't perfect, but it does add some level of rust prevention. I have had master cylinders that were [at least] 5 years old with almost zero rust. Anyways just thought I'd share that tip. Results may vary -Russ __________________ Insert clever text here:

10-25-2020, 08:47 AM	#2
blazer2007 Registered User Join Date: Jan 2007 Location: vernon b.c. Posts: 3,022	Re: Clear coat on a new master cylinder doesn,t the brake fluid eat the clear ?

10-25-2020, 10:25 AM	#3
jayoldschool Moderator Join Date: Dec 2012 Location: ON, Canada Posts: 2,176	Re: Clear coat on a new master cylinder Only if you spill the brake fluid ;-) I cleared the natural aluminum intake on one of my 350s 25 years ago. Still looks great.

10-25-2020, 04:41 PM	#4
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 2,131	Re: Clear coat on a new master cylinder Clear coated many iron masters even back in the day when I was a tech at a Chev dealer ship. The service manager gave me the tip. If you get some brake fluid on it its easy to clean and touch up. Rusty masters are not pretty.

10-25-2020, 05:37 PM	#5
MySons68C20 Senior Member Join Date: Sep 2014 Location: Wenatchee, Wa Posts: 929	Re: Clear coat on a new master cylinder I clear coated my original 307 valve covers on my first 68 42 years ago and they never had a hint of rust.

10-25-2020, 09:33 PM	#6
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,670	Re: Clear coat on a new master cylinder I used Eastwood master cyl paint on mine..also painted my calipers with it as wel.so far it still looks good..has a raw cast iron look to it.. Never thought about using just clear... __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

10-26-2020, 03:11 PM	#7
tinydb84 Registered User Join Date: Jul 2009 Location: San Jose Ca Posts: 2,871	Re: Clear coat on a new master cylinder I shot mine with SPI epoxy. Its only had fluid in it for a few months and I don't think I spilled any but it looks great. __________________ David Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991 My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985 Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557 Instagram: myfabguy

11-09-2020, 12:21 PM	#8
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,525	Re: Clear coat on a new master cylinder I prefer the "patina" look, lol. Attached Images

11-12-2020, 08:48 PM	#10
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,714	Re: Clear coat on a new master cylinder Use cast blast on iron parts . Summit valve covers are what my builder puts on to dino I've changed them since Attached Images __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.



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