machine gun exhaust tips keeping clean

Technical Question and Answer - On topic to 71-74 Plymouth B-bodies only.

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72 blue 400
Satellite Sebring (RH)
Posts: 61
Joined: Sat Dec 25, 2004 10:21 am
Location: dorr michigan

machine gun exhaust tips keeping clean

Post by 72 blue 400 » Sat Jul 20, 2013 9:19 pm

got my exhaust and machine gun tips on my roadrunner,bought the tips from acrruate exhaust,my problem is how do you keep the orange inserts looking orange drove the car a couple hundred miles and they are black on the inside of the tip,to keep them looking new do ya have to keep repainting the inside?or is there something that will clean them without removing the paint??

JimT1971RR
GTX (RS)
Posts: 104
Joined: Sat Sep 22, 2012 10:56 pm
My Cars: 1971 Roadrunner.
Location: Long Beach, CA

Re: machine gun exhaust tips keeping clean

Post by JimT1971RR » Sat Jul 20, 2013 11:42 pm

I don't have machine gun tips, yet, but it sounds as though the manufacturer didn't use a high temp paint for the inside. If the paint has discolored, I would suggest using a high temp engine paint. If the black is just soot from the exhaust, it should just wash off.

71_bronze_gtx
GTX (RS)
Posts: 268
Joined: Tue Jan 22, 2013 1:32 pm
My Cars: 71 GTX
72 cuda repli-mod
Location: S. E. Michigan

Re: machine gun exhaust tips keeping clean

Post by 71_bronze_gtx » Tue Jul 23, 2013 8:00 am

PROBABLY soot. Running too rich in at least one of the carburetor metering circuits.

Anyway, try a mild citrus degreaser such as Zep brand sold by Home Depot.

72 blue 400
Satellite Sebring (RH)
Posts: 61
Joined: Sat Dec 25, 2004 10:21 am
Location: dorr michigan

Re: machine gun exhaust tips keeping clean

Post by 72 blue 400 » Tue Jul 23, 2013 8:58 pm

thanks will give zep a try.

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