Heat Shield

[David15151]

I searched the forums but no luck. What size are the bolts for the heat shield that goes over the exhaust maifold. The upper one. I am missing the front bolt and noticed that when i ran a can of seafoam through my engine that some of the gas was coming out of that hole. I want to go ahead and just plug it up with a bolt. I have no shop manual so i am asking here.

 

[Spln_Hrd]

you are leaking exhaust gas from the hole that you put the heat shield bolt into?

if so you have a problem with your exhaust manifold.

and i am not sure what size it is but remeber that the most important part of the size of a bolt it the size of the area where the threads are and the pitch of the threads it doesn't really matter what size the head is

 

[David15151]

yeah.. maybe i should just go ahead and take off the heat shield and inspect the manifold for cracks.. plus i could compare the other bolts to see the size

 

[Spln_Hrd]

yeah you should do that, if there are minor cracks you could braze weld it then grind it down smooth and try to hit it on both sides if its in a spot you can

 

[TURFNNSURF]

David,

The bolts you are talking about are 8mm X 1.25mm. I know this cause I just had to drill out a broken bolt for my heat shield and tap new threads. Here is what I was working on whne the bolt broke.

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[David15151]

awesome thanks, ill pick one up on the way home and check out my manifold... AFTER it cools mind you.