But went with the 2 inch on the last build.
Header Size
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
I'm been considering replacing my 1 7/8 kooks LT's with a set of kooks 2 inch primary LT's on my car coupled to a 3" catless x pipe and XS power 3" exhaust. I also considered having the headers coated. Were you able to measure the temperature
differences or is it something you notice by feel of the radiant heat when you open the hood?
differences or is it something you notice by feel of the radiant heat when you open the hood?
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
I've always noticed a dramatic decrease in exhaust radiant heat in the cabin and engine bay with ceramic-coated exhaust compared to without. I only have anecdotal proof, though. The modified C6 Z06 exhaust setup I ran for a short time recently after swapping it in place of my coated headers was melting connectors and heat shielding that were otherwise unaffected before with the coated headers. This is another reason I'm swapping in the LG's - performance, sure, but I also want a coated exhaust in there to restore the reduced temps.
Le Mans Master
Joined: Jan 2009
Posts: 7,767
Likes: 19
From: East Texas
I'm been considering replacing my 1 7/8 kooks LT's with a set of kooks 2 inch primary LT's on my car coupled to a 3" catless x pipe and XS power 3" exhaust. I also considered having the headers coated. Were you able to measure the temperature
differences or is it something you notice by feel of the radiant heat when you open the hood?
differences or is it something you notice by feel of the radiant heat when you open the hood?
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,838
From: cookeville tennessee
I'm been considering replacing my 1 7/8 kooks LT's with a set of kooks 2 inch primary LT's on my car coupled to a 3" catless x pipe and XS power 3" exhaust. I also considered having the headers coated. Were you able to measure the temperature
differences or is it something you notice by feel of the radiant heat when you open the hood?
differences or is it something you notice by feel of the radiant heat when you open the hood?
Yes the diffs on the headers is just the diff's in temp you feel when you put the hood up plus the diff on the inside also BIG DIFF. Robert
Instructor
Joined: Apr 2014
Posts: 196
Likes: 2
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If I had it to do over I would have paid the diff for them.
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Safety Car
Joined: Aug 2007
Posts: 3,562
Likes: 233
wow those are the nicest header i ever seen...lol
only complaint i have with my old lgs made by borla i believe is they come close to few spark plug wires in turn even with sleeves mess up my wires
are there any headers that dont come close to wires?
only complaint i have with my old lgs made by borla i believe is they come close to few spark plug wires in turn even with sleeves mess up my wires
are there any headers that dont come close to wires?
Le Mans Master
Joined: Jan 2009
Posts: 7,767
Likes: 19
From: East Texas
That stopped after I coated mine seems like the socks made mine cook more. I use the straight boots and bend them away from the tubes no more problems now.
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
I know there are a lot of factors, mainly compression and cubes, but the car just felt slow on the street. It trapped 114 with 91 octane and no meth in full street trim in bad air, so with a 109 tune and a drag pack, 117-118 would have been doable, but it just wasn't fun on the street.
So I really don't have concrete evidence, but I'd say 1 7/8's are plenty for my power level. 800-900 area.
