Powder Coating Question, Is primer necessary? Options

[AndrewBlyholder]

Was thinking of having some trailing arms powder coated. Got two estimates from local shops. Cheaper one claimed that they didn't need to put a primer coat on before the finish coat as it wasn't necessary, the finish coat adheres well enough by itself. More expensive shop claimed that an epoxy or polyurethane primer was absolutely necessary. Any advice from the past experience out there?

Thanks,

Andrew B.

[AndrewBlyholder]

Sorry Randall, this is all for my street car, not the race car. Lee philosophy on paint and aeshethics is that it just adds weight (Lee is the car owner, I'm just the chauffeur.) So he cringed when I sprayed blue paint on the formerly primer finish hood last year.

I want to get my street 914 reliable enough to take on ski trips to Tahoe. I did two trips last year with no problems, however all the typical dark brown, oiled surfaces on the underside and suspension turned a bright orange as the road salt activited all the uncoated surfaces to start rusting! So I'm on a campaign now to repaint or recoat in some wayall the underside surfaces. I'm preferring powder coating as I think it will be much more durable in the long run than conventional paints.

Andrew