Rusty intake bolts?
Thread Starter
Instructor
Joined: Nov 2013
Posts: 133
Likes: 0
From: Cincinnati OH
Rusty intake bolts?
I just installed new correct "M" head mark intake manifold bolts, and although the car is in a climate-controlled garage and hasn't been run yet, the head of the bolts at the rear of the engine have already rusted!
Should I have painted these before installing them or is something wrong?!https://www.corvetteforum.com/forums...lies/crazy.gif
Should I have painted these before installing them or is something wrong?!https://www.corvetteforum.com/forums...lies/crazy.gif
Race Director
Joined: Jan 2002
Posts: 15,359
Likes: 2,728
From: Close to DC
C2 of the Year Finalist - Modified 2020
That's not uncommon. You could use VHT Clear spray. Some bolts get painted the engine color. It depends on the year and engine in your car. More important, did you coat the threads with a sealant to prevent oil from wicking up the threads? Extra note! I hope the bolts you replaced each matched exactly the length and location as you worked. I think #4 and #5 cylinder exhaust pushrods could be pinched by a too longer of a bolt. Someone else on here may check to see if I'm correct. 
Dennis
Dennis
Last edited by Bluestripe67; Oct 20, 2014 at 11:46 AM.
Thread Starter
Instructor
Joined: Nov 2013
Posts: 133
Likes: 0
From: Cincinnati OH
Dennis, the bolts are correct, were of identical length, were treated with ARP thread sealant and arrived black in color. It's only the back two that have rusted (so far), so I suppose I could spray the rest with VHT clear while they're on the engine. I'll probably have to pull all the bolts and paint them. Grrrrr.
Burning Brakes
Joined: Jun 2007
Posts: 1,062
Likes: 10
From: Dallas TX
I took my dremel and lightly wire brushed each and then put clear fingernail polish on the head bolts. Works perfectly. I have used it on non stainless fuel line and brake line.
