Headers for V8 cars, Please read
Originally Posted by jbrady
No CARB certification will be sought. All aftermarket parts must have a CARB E.O. # to be "legal". That said ironically these could actually be BETTER for emissions than the stock manifolds. The superior efficiency could bring the cats to operating temps faster creating less cold start emissions. They will certainly pass the tailpipe test. The visual is the only concern. MANY cars in California are heavily modified and "somehow" get through. I would suggest some searching for how that is happening.
The headers have no provision for mounting the heat shields. I really cannot offer a good way to secure the shield in place. Personally I would suggest cutting the shield into a top and bottom half and placing the top half over the header, secured with wire for the test ONLY. This would probably get you past the visual as the view from the top would be normal. Afterwards, remove the partial shield to avoid rattling and rubbing on the coating.
The headers have no provision for mounting the heat shields. I really cannot offer a good way to secure the shield in place. Personally I would suggest cutting the shield into a top and bottom half and placing the top half over the header, secured with wire for the test ONLY. This would probably get you past the visual as the view from the top would be normal. Afterwards, remove the partial shield to avoid rattling and rubbing on the coating.
, are the heat shields that necessary? Should we even be concerned with remounting them in terms of needing to protect anything in the engine bay nearby? Sorry if this has already been covered 
Lexus Champion
Joined: Feb 2001
Posts: 3,124
Likes: 32
From: Texas
Originally Posted by Dr.G
Other than the need for passing a visual inspection in Cali , are the heat shields that necessary? Should we even be concerned with remounting them in terms of needing to protect anything in the engine bay nearby? Sorry if this has already been covered
, are the heat shields that necessary? Should we even be concerned with remounting them in terms of needing to protect anything in the engine bay nearby? Sorry if this has already been covered 
Originally Posted by jbrady
The Jet Hot does a good job keeping the temps down. It is a good idea to buy some heat wrap to cover any wires, brake lines or A/C lines that come close. Otherwise, no, the heat shields are not needed.
The driver's side header is clean from any wires/lines that are close enough to cause any concern. The passenger side has what I think are 2 power steering lines coming from the rack, which are about 5 inches away from the header. I've purchased some heat wrap to insulate them from the heat just in case.
I'll see if I can't get a close ups when the car goes on the dyno.
Originally Posted by gawd
The driver's side header is clean from any wires/lines that are close enough to cause any concern. The passenger side has what I think are 2 power steering lines coming from the rack, which are about 5 inches away from the header. I've purchased some heat wrap to insulate them from the heat just in case.
I'll see if I can't get a close ups when the car goes on the dyno.
I'll see if I can't get a close ups when the car goes on the dyno.
http://www.autobarn.net/thhowiprbyth.html
http://www.martelbrothers.com/catalo...p-1-c-453.html
EDIT.....Damn, I was hoping to be the one to start the 50th! page of this enduring thread!!
What is the longest running thread on CL btw, anyone?
Last edited by Dr.G; Jul 27, 2005 at 01:23 PM.
Finally got some time to post some pics and details on the installation. First, the farbicator supplied a set of gaskets and 16 bolts with the set of headers. I didn't feel comfortable using the gaskets that they supplied, so I just bought a set from the dealer, which was 20.00 for each side. After examining the gaskets that came out of my car, you could probably reuse them if you were so inclined, but 40.00 is cheap insurance aginst leaks. Especially when everything is put back together 
OEM vs aftermarket gaskets
OEM gasket after 60K
Header bolt
OEM vs aftermarket gaskets
OEM gasket after 60K
Header bolt
Steering rack mounts 17mm - 2 on each side
Still assembled
Disassembled
Circle bolt is one of the 4 that belong to the front subframe
Toyoda - My car was made by Lucas Films
My exhuast leak
MY impressions so far are fantastic, the car pulls very hard in the midrange between 3K - 5K rpm, which is great for me on the highway due to the 3.76 gearing. I didn't notice any gain or loss on the low end , but there is a little umph up towards the redline and the car lunges slightly right after it shifts gears. The exhaust sounds a bit throatier under acceleration, but I couldn't detect anything at idle or while cruising around town.
Hopefully, dyno number will be available sometime early next week
Still assembled
Disassembled
Circle bolt is one of the 4 that belong to the front subframe
Toyoda - My car was made by Lucas Films
My exhuast leak
MY impressions so far are fantastic, the car pulls very hard in the midrange between 3K - 5K rpm, which is great for me on the highway due to the 3.76 gearing. I didn't notice any gain or loss on the low end , but there is a little umph up towards the redline and the car lunges slightly right after it shifts gears. The exhaust sounds a bit throatier under acceleration, but I couldn't detect anything at idle or while cruising around town.
Hopefully, dyno number will be available sometime early next week
Last edited by gawd; Jul 27, 2005 at 01:53 PM.
Gawd, that's awesome of you to have documented the entire disassembly/reassembly and provide pics as well!! I'm sure this will help alot of guys out as well as their shop guys to hopefully save on time/labor $$...
Last edited by Dr.G; Jul 27, 2005 at 02:25 PM.
Originally Posted by Dr.G
Gawd, that's awesome of you to have documented the entire disassembly/reassembly and provide pics as well!! I'm sure this will help alot of guys out as well as their shop guys to hopefully save on time/labor $$...
You're very welcome, I hope you get the same amount of info that I did on past threads, which saved me countless trips to the dealership/mechanic. Good luck with the install, let me know if you have any questions.
Originally Posted by gawd
You're very welcome, I hope you get the same amount of info that I did on past threads, which saved me countless trips to the dealership/mechanic. Good luck with the install, let me know if you have any questions.
BTW- I think for all that are so anxious for the results on the dyno, maybe we should start a little collection to cover the cost for you on all the comparison runs you plan on doing... hell as many that are interested in knowing it would probably be less than a dollar from the each of us
I'm serious and would be willing to do so
Lexus Test Driver
Joined: Jun 2002
Posts: 869
Likes: 1
From: California
gawd- thanks a bunch for all your involvment with this-the pics and info are a BIG help!
>>Wonder if we could do a group buy for new OEM gaskets?
Dr. G- thanks for the links- I would certainly help out with dyno costs!
>>Wonder if we could do a group buy for new OEM gaskets?
Dr. G- thanks for the links- I would certainly help out with dyno costs!