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Offline r4pinto

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paint problem
« on: August 29, 2016, 08:13:45 AM »
Wasn't sure where to put this so figured here might be right.

Repainted the engine I will be putting in my 1980, and when I looked at the valve cover this morning it was wrinkled. From what I could tell this is the only thing to have wrinkled. What could cause this & what would solve the issue? Looks & feels like crud lol.
Matt Manter
1977 Pinto sedan- Named Harold II after the first Pinto(Harold) owned by my mom. R.I.P mom- 1980 parts provider & money machine for anything that won't fit the 80
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Offline dick1172762

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Re: paint problem
« Reply #1 on: August 29, 2016, 02:48:36 PM »
You put the second coat on after the first coat was dry to the touch which caused the first coat to wrinkle.  Or you painted kyroln over rustoleum or the other way around. 
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Offline r4pinto

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Re: paint problem
« Reply #2 on: August 29, 2016, 03:16:08 PM »
You put the second coat on after the first coat was dry to the touch which caused the first coat to wrinkle.  Or you painted kyroln over rustoleum or the other way around. 

Well both paints were Rustoleum Engine paint. The first coat was applied a few hours before the second coat. Not sure if it was "dry to the touch" or what constitutes that lol.

Anyway I wasn't sure if it was possibly contaminants causing the wrinkling. Is it best just to sand and reprime before repainting?
Matt Manter
1977 Pinto sedan- Named Harold II after the first Pinto(Harold) owned by my mom. R.I.P mom- 1980 parts provider & money machine for anything that won't fit the 80
1980 Pinto Runabout- work in progress

Offline r4pinto

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Re: paint problem
« Reply #3 on: August 29, 2016, 03:17:20 PM »
Could higher temps & humidity in the garage have caused the issue as well?
Matt Manter
1977 Pinto sedan- Named Harold II after the first Pinto(Harold) owned by my mom. R.I.P mom- 1980 parts provider & money machine for anything that won't fit the 80
1980 Pinto Runabout- work in progress

Offline russosborne

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Re: paint problem
« Reply #4 on: August 30, 2016, 01:48:24 AM »
Matt,
there is a specific time that you can add a second coat which varies with different brands of paint.
the instructions on the can will tell you something like "apply second coat within X minutes of first coat application, or wait for X number of days.

May or may not be your issue, but normally "The first coat was applied a few hours before the second coat." is not in the proper window.

Russ
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Offline r4pinto

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Re: paint problem
« Reply #5 on: August 30, 2016, 07:28:02 AM »
OK, gotcha. Thanks for the tip. I went ahead & sanded the spots & shot with primer but noticed one spot wrinkling almost immediately. I may see if there was something on it, may say the heck with it dunno yet
Matt Manter
1977 Pinto sedan- Named Harold II after the first Pinto(Harold) owned by my mom. R.I.P mom- 1980 parts provider & money machine for anything that won't fit the 80
1980 Pinto Runabout- work in progress

Offline russosborne

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Re: paint problem
« Reply #6 on: August 31, 2016, 02:24:32 AM »
Can you sandblast it clean?

In your most recent example with the primer there could be a paint mis-match. I can't remember, but either lacquer over enamel or enamel over lacquer causes pretty much instant wrinkling/other problems. Was the primer the same type of paint as what you had on it from before?

Russ
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RIP Casey, Mallory, Abby, and Sadie. We miss you.

79 Pinto ESS fully caged fun car. In progress. 8inch 4.10 gears. 351C and a T5 waiting to go in.
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Offline russosborne

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Re: paint problem
« Reply #7 on: August 31, 2016, 02:32:19 AM »
Just did a quick search.
Is this the type of paint you used originally?
http://www.lowes.com/pd/Rust-Oleum-Automotive-Engine-High-Heat-Black-Rust-Resistant-Enamel-Spray-Paint-Actual-Net-Contents-12-oz/3728769?cm_mmc=SCE_PLA-_-Paint-_-SprayPaint-_-3728769:Rust-Oleum&CAWELAID=&kpid=3728769&CAGPSPN=pla&store_code=1728&k_clickID=57a25393-1008-4220-87a1-cd34e552d0bb
If so, it can be recoated after 60 minutes according to the information on the specifications, so a few hours should have been fine. Nothing stated about any time frame after that 60 minutes there.

Looking more like something got on the valve cover. Maybe you should get a nice shiny aluminum one?  ;D

Russ
In Glendale, Arizona

RIP Casey, Mallory, Abby, and Sadie. We miss you.

79 Pinto ESS fully caged fun car. In progress. 8inch 4.10 gears. 351C and a T5 waiting to go in.
74 Pinto Wagon.  To be or Not to be a Pinchero, that is the question.

Offline r4pinto

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Re: paint problem
« Reply #8 on: August 31, 2016, 07:51:25 AM »
Just did a quick search.
Is this the type of paint you used originally?
http://www.lowes.com/pd/Rust-Oleum-Automotive-Engine-High-Heat-Black-Rust-Resistant-Enamel-Spray-Paint-Actual-Net-Contents-12-oz/3728769?cm_mmc=SCE_PLA-_-Paint-_-SprayPaint-_-3728769:Rust-Oleum&CAWELAID=&kpid=3728769&CAGPSPN=pla&store_code=1728&k_clickID=57a25393-1008-4220-87a1-cd34e552d0bb
If so, it can be recoated after 60 minutes according to the information on the specifications, so a few hours should have been fine. Nothing stated about any time frame after that 60 minutes there.

Looking more like something got on the valve cover. Maybe you should get a nice shiny aluminum one?  ;D

Russ

LOL yea I think there may have been something on the existing paint. It happened again after the primer. For now I'm gonna make do & redo it later. Got a deadline with the car so don't have time to redo it
Matt Manter
1977 Pinto sedan- Named Harold II after the first Pinto(Harold) owned by my mom. R.I.P mom- 1980 parts provider & money machine for anything that won't fit the 80
1980 Pinto Runabout- work in progress