[Mustangsaly]

Ok I have a Dumb Header Collector Gasket Question, I bought a M21 4 speed and a used set of Hooker Headers and Exhaust off my buddies 73 Z/28 Camaro. It's all going in my 74 Camaro, he could not get to headers or exhaust. so he handed me one of the old used header collector gaskets. how do I measure it to know what size to buy ? all the parts are 35miles from me.







Just measure across the center of the collector gasket ?







Thanks

[TTFiveOhRanger]

I would just take the used one into a parts store next time you go past then you can be 100 percent sure and no measuring. I looked it up took a few minutes

http://store.summitracing.com/partde...5&autoview=sku

Inner circle you can get close going around the middle. Which accordind to this summit page is the number used for labeling the parts. I would go to a local parts store unless they don't have the gasket you need. Not a fan of decent handling charge no matter the size of order..


On a side note to find the diameter of the 3 point bolt circle mark the 3 centers on a piece of paper. Draw a triange. Now from each point draw threw the middle of the opposing triangle side. The three new lines will intersect in the mid point of the bolt circle. Measure from that center to a corner of the original triange and that will be the radius of the bolt circle. Double that and you will have the diameter. this will work if you pick three points on the inner circle too..

[Chevrolet4x4s]

Measur across the hole,It is mostlikely 3 inch But measure to be sure. If you have some 1/8th ish aluminum plate laying around just trace it onto there and cut it out.I made aluminum ones for my truck(If the paper ones lasted over a year the new ceramic ones shoul have lasted several but I figure the aluminum will outlast the headers)

Shane

[DoubleVision]

If it ever comes to using paper gaskets soak them in water for a while, this way they retain moisture and expand. In many cases, we took some tin sheeting and made our own collector gaskets.

[Mustangsaly]

Originally Posted by DoubleVision

If it ever comes to using paper gaskets soak them in water for a while, this way they retain moisture and expand. In many cases, we took some tin sheeting and made our own collector gaskets.

then you used the tin with the paper gasket, I have copper head header gaskets and was planning copper collector gasket too, but local auto stores don't have copper collector gaskets.

[speedydude]

I threw in the copper ones. More expensive but they cinched down nice and don't leak.

And yea, like Shane said, just measure across the hole......likely 3"

[speedydude]

Just saw your post. Sorry no local auto stores have em in your area. Jegs does but shipping always adds a bit. Looked like a copper gasket in your first post.

Here's a link.........

http://www.jegs.com/i/JEGS/555/30701/10002/-1/750799

[DoubleVision]

Nope, we didn't use anything else, just the cut out tin. most of the time, if you can find some tin or aluminum sheeting with a slight thicker thickness to it, cut them out they'll seal fine.

[Mustangsaly]

Doublevision nice tip. well I have a set of oval copper head header gaskets, but need square. and I have a set of paper collector gaskets I will use or I will try the tin trick.. I will call advance auto it's about 20 miles. my buddie thats helping drop the 400 in has a set of sq header gaskets I will use & replace