PINTO CAR CLUB of AMERICA

Welcome to FordPinto.com, The home of the PCCA => General Help- Ask the Experts... => Topic started by: r4pinto on August 29, 2016, 08:13:45 AM

Title: paint problem
Post by: r4pinto 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.
Title: Re: paint problem
Post by: dick1172762 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. 
Title: Re: paint problem
Post by: r4pinto 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?
Title: Re: paint problem
Post by: r4pinto on August 29, 2016, 03:17:20 PM
Could higher temps & humidity in the garage have caused the issue as well?
Title: Re: paint problem
Post by: russosborne 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
Title: Re: paint problem
Post by: r4pinto 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
Title: Re: paint problem
Post by: russosborne 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
Title: Re: paint problem
Post by: russosborne 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 (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
Title: Re: paint problem
Post by: r4pinto 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 (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