Headers with 1/4 inch flange?
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Veteran
Joined: Oct 2010
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From: Beaverton, OR
Headers with 1/4 inch flange?
I'm needing some block hugger headers for my Jeep, and hey, I'm cheap. 
Summit has some inexpensive uncoated headers, but have a 1/4 inch flange. But they appear to have a flat protrusion on the mounting side to help sealing. With the center two holes sharing the two bolts, I'm a tad leery of getting these. I assume with a good gasket they would be good.
Any experience with these types of headers leaking? And can you recommend a quality gasket?
http://www.summitracing.com/parts/SUM-G9064/?rtype=10
Summit has some inexpensive uncoated headers, but have a 1/4 inch flange. But they appear to have a flat protrusion on the mounting side to help sealing. With the center two holes sharing the two bolts, I'm a tad leery of getting these. I assume with a good gasket they would be good.
Any experience with these types of headers leaking? And can you recommend a quality gasket?
http://www.summitracing.com/parts/SUM-G9064/?rtype=10
Champion
Joined: Aug 2010
Posts: 2,697
Likes: 3
From: Cape Carteret NC
the center two sharing the same drilled mounts isn't a problem.. It's the way mine are too, and they don't leak in the slightest..
what would give me pause about those is the extremely short tubes.. they collect @ 2.5", and from the looks of those pics they do it within foot of the bend..
I'm just sharing my thoughts on those things, don't take it as me being negative, but your stock manifolds are going to breathe just as well as those things do... now, if after they collect and if you fabricate a straight run of a couple feet and use heavier gauge tubing, you may recover some of the scavenger effect your going to lose by them collecting so fast..
honestly, and again just my opinion, those headers simply won't breathe as well as even a regular 'shorty', which is far inferior to long tube headers.. you'd have to do something more to make them do so, and at that point, you may as well have gone to long tube headers..
what would give me pause about those is the extremely short tubes.. they collect @ 2.5", and from the looks of those pics they do it within foot of the bend..
I'm just sharing my thoughts on those things, don't take it as me being negative, but your stock manifolds are going to breathe just as well as those things do... now, if after they collect and if you fabricate a straight run of a couple feet and use heavier gauge tubing, you may recover some of the scavenger effect your going to lose by them collecting so fast..
honestly, and again just my opinion, those headers simply won't breathe as well as even a regular 'shorty', which is far inferior to long tube headers.. you'd have to do something more to make them do so, and at that point, you may as well have gone to long tube headers..
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Veteran
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From: Beaverton, OR
Being in a Wrangler, the block hugger header is the only option, due to the firewall design (for a straight six). I had to trim it a little to run stock Ram manifolds as it is.
It's pretty well known that the stock Magnum manifolds are NOT good for flow. I;ve done a bit of reading, and on the header tests on the 318/360, the block huggers performed almost as good as shorty and long-tube headers did in horsepower, there's just a minimal gain in torque. And I can tell you, I don't need an increase in torque with a 5.9 in a 4000lb Jeep.
It's pretty well known that the stock Magnum manifolds are NOT good for flow. I;ve done a bit of reading, and on the header tests on the 318/360, the block huggers performed almost as good as shorty and long-tube headers did in horsepower, there's just a minimal gain in torque. And I can tell you, I don't need an increase in torque with a 5.9 in a 4000lb Jeep.