Chassis coatings?

[Blind Mule]

What is legal as far as powdercoat and what about chrome? I know some of the coatings get frowned on

[H.G. Wells]

I bet Rooman will jump in with the correct answer, but I think part of it has to do with what chassis cert you are looking for.
If I am not mistaken you can cert a 7.50 car with powder coat, but not TF and I doubt advanced ET.  I will dig up my book and look
Not sure about chrome on any part of the driver cockpit part. 

[GlennLever]

Powder coat is not mentioned, my frame is powder coated. The rules are not clear on powder coat (not mentioned at all) a lot of people do not like it as they think that cracks will be hidden by powder coat, that is not my opinion (powder crack also). I think cracks show up better (I powder coat as a sidelline)

These are the rules SECTION 4B - ADVANCED E.T.
ROLL CAGE
The following SFI Chassis Specs are effective for all new chassis
and for all current chassis at next recertification: full-bodied cars
must meet SFI Spec 25.1E, 25.2, or 25.3; Funny Cars and openbodied
altered cars must meet SFI Spec 10.1E or 10.2. All frontengine
dragsters must meet SFI Spec 2.2B or 2.4B. All rear-engine
dragsters must meet SFI Spec 2.1 or 2.5B. Chassis must be
recertified every three years by NHRA and have a serialized sticker
affixed to cage before participation. Plating of chassis prohibited on
any vehicle manufactured after Jan. 1, 1999; painting permitted.
See General Regulations 4:1.

NHRA PRO MOD DRAG
RACING SERIES
Chassis must have manufacturer’s name, serial number, and date
of manufacture. Chassis must meet SFI Spec 25.1E or 25.2. Plating
of chassis prohibited; painting permitted. Chassis must be
recertified yearly by NHRA and have serialized sticker affixed to roll
cage before participation. Current three-year certification will be
accepted until they expire. No vehicles will be inspected early to
delay compliance. See General Regulations 4:11.

TOP ALCOHOL DRAGSTER
Chassis must meet SFI Spec 2.1 (rear-engine cars), 10.1E (frontengine,
driver in front of rear end) or SFI Spec 2.2B (front-engine,
driver behind rear end). Plating of chassis prohibited; painting
permitted. Chassis must be recertified yearly by NHRA and have
serialized sticker affixed to frame before participation. All wiring
must be external of the framerails; routing of cables, hydraulic, or
pneumatic lines inside the chassis is permitted. Pressurization of
framerails in lieu of air bottles is prohibited.

[H.G. Wells]

Thanks for the clarification.

[wideopen231]

Just a question why would anyone want to hide cracks in a chassis your butts going to be running 150 or 200 mph in.

[jimc]

Its not they want to hide the cracks, its just that it will hide the cracks. You would want to inspect it through the year as you race it.

[BCCOWANWEELS]

YOU DONT WANT TO POWDER COAT A RACE CHASSIS, ALL YOU NEED IS PREFERABLY TRANS FLUID ON BARE METAL OR AT THE MOST 1 LIGHT COAT OF LAQUER PAINT WITH NO PRIMER. YOU NEED TO INSPECT THE CHASSIS AFTER EACH WEEKEND RACE FOR CRACKS TO BE SAFE. THATS WHY PROF TEAMS DONT COVER THERE CHASSIS.
BOB