Bengt Sweden

My paint shop tells me that the paint is specified to take maximum 60 C. I was planning to have the same colour as on my wheels.
Bengt

Sam Lin

It likely will not survive, especially in areas of extra heat or low airflow like around the headers. Coolant and oil temps reach 100C regularly, I doubt the exterior of the block cools enough to drop 40C.

Sam

Bengt Sweden

I have painted my Chevy v8 with regular one component laquer. Shouldn't two component hardening paint be even better? All the plastic stuff that is in the engine room and attached to the engine, shouldn't they detoriate before a good quality laquer? What about wheels after hard braking, they are pretty hot and seem to take it well. It is the same type of paint.
The recommendation just doesn't seem to match and I am getting unsure here.

Bengt

MPD47

Why dont you just go buy some good high temp paint and be done with it?

theedge

Just get good hightemp paint. Normal paint will prolly survive on most of the block, but theres gotta be areas that get above 60C, especially sitting idling.

seanbrowning

Get it powerdercoated. Our company gauruntees that it will last.

Ian Carr

They make motor and high temp paint in cans.... thats your best choice cause i dont think car paint will work

Sam Lin

Bengt, 60C is a very low temp! You can put engine compartment plastics in boiling water (100C) and it'll hold up. Laust checked his brake hub temps at 80C, still lower than 100C - the engine oil and coolant hovering at 100C is hotter than either situation you mention. As for your question about "shouldn't this type of paint hold up?" I'm just going off the 60C number you provided.

Sam

Jeremy Himsel

Maybe I can help here. I've painted several motors in the past. When I say motors, I mean block, oil pan, intake, waterpump, all accessories. I've never used a "hi-temp" paint. The first time I did it I used spray can urethane enamel I had the local paint store mix up for me in Dodge Viper GTS Blue. The next time I went the full base/clear coat set-up in guards red. I used PPG deltron for the base/clear. The GTS blue motor lasted 8 years, made about 650 HP, and saw 210 degree coolant temps. When I sold the blue motor this year it looked perfect. In fact, then new owner had it rebuilt and the jet wash at the machine shop only took off 15% of the paint. The base/clear motor still looks perfect but only has about 2.5 years on it.

So I guess the answer to your question is Yes, it'll work just fine. The trick to using body paints on engine parts is to be sure that it is clean and you use an etching primer. I've also painted my brake booster heat shield (that runs right over the turbo) in urethane enamel and after a year it still looks perfect.

Got Me a Porsha

So, You painted the motors block with a base/clear, in guards red? That is really neato, how did you know it would last? Wow, that Viper GTS motor sounds pretty mean! I'll bet the new owner is very happy!

Jeremy Himsel

Blind Sarcasm. Typical. I sent you an e-mail smart ***.

Got Me a Porsha

Oh Hey, got yer attention! Did you send it to my house?

By the way, was that blue motor a HEMI?

Jeremy Himsel

Sent it to your house.

Oh, I forgot...... your are the new owner of the blue motor.

Got Me a Porsha

Welcome back! I'll have to read it next time I'm at the house. Are you contactable this week? I need to know b-4 the weekend (read: Friday).

Honestly, I don't really know who owns what anymore...

Bengt Sweden

Thank you for your thoughts. I have tried high temp paint on cans and am not satisfied with the quality. I'll ask the shop to do the painting and ask them to do as when they paint wheels with etching primer. The block is brand new so I don't have to worry about oil residues.

Bengt