What is the difference betwen the old and new style Comptech headers? Which is preferable? Does installing either require permanent mods to the car?
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Russ
'91 black/black
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Russ
'91 black/black
Comptech header question
- Thread starter Russ
- Start date
Hey Russ,
I looked over Comptechs Website. It looks like the headers they offer are made for the 95-99 cars and there are adapters to make them fit the earlier models. I can only guess that originally they made 1991-1994 headers, then updated them to fit all years w/wo the adapters.
They are very nice products, excellent craftsmanship on these babies. There will be no permanent mods to the car to install these. They are bolt on items. You may also want to consider DC sports (last time I installed them they were about $600 less. Also very nice quality, I recently helped out with an install of this brand. I happen to have RM's headers on my car. These are also nice, but not quite up to the quality of DC Sport or Comptech IMO.
Are you going to LimeRock on May 25th? I will have my car so you can see the RM's and Keith will have his car with the DC Sports, Miled will be there with his Comptech's. Sounds like this would be a good place to see them all then decide!
FYI, there is no difference in performance between the three.
HTH,
LarryB
[This message has been edited by Larry Bastanza (edited 10 May 2002).]
I looked over Comptechs Website. It looks like the headers they offer are made for the 95-99 cars and there are adapters to make them fit the earlier models. I can only guess that originally they made 1991-1994 headers, then updated them to fit all years w/wo the adapters.
They are very nice products, excellent craftsmanship on these babies. There will be no permanent mods to the car to install these. They are bolt on items. You may also want to consider DC sports (last time I installed them they were about $600 less. Also very nice quality, I recently helped out with an install of this brand. I happen to have RM's headers on my car. These are also nice, but not quite up to the quality of DC Sport or Comptech IMO.
Are you going to LimeRock on May 25th? I will have my car so you can see the RM's and Keith will have his car with the DC Sports, Miled will be there with his Comptech's. Sounds like this would be a good place to see them all then decide!
FYI, there is no difference in performance between the three.
HTH,
LarryB
[This message has been edited by Larry Bastanza (edited 10 May 2002).]
Larry,
I plan to buy DC Sports headers for my 91 and I am wondering about how long it takes for a mechanic to install it ?
Is it necessary to remove the engine ?
Regards,
David http://www.macs.ch/homepages/david/
I plan to buy DC Sports headers for my 91 and I am wondering about how long it takes for a mechanic to install it ?
Is it necessary to remove the engine ?
Regards,
David http://www.macs.ch/homepages/david/
David,
No need to remove the engine. All the work is done from underneath the car. The first time I did it is was 10 hours (definately rookie speed!!) Now it is 4-5hrs for me using jack stands. I would say 4 hours tops for a pro with a lift. (AKA dealer tech.)
The DC Sport headers have a "flex" section, like the OEM system that really makes the installation a pleasure. MY RM's are hard fixed with no flex and the installation is a little harder.
You can go to: http://www.nsxprime.com/FAQ/DIY/headers.htm and check out the write ups submitted by a few of us.
HTH,
LarryB
No need to remove the engine. All the work is done from underneath the car. The first time I did it is was 10 hours (definately rookie speed!!) Now it is 4-5hrs for me using jack stands. I would say 4 hours tops for a pro with a lift. (AKA dealer tech.)
The DC Sport headers have a "flex" section, like the OEM system that really makes the installation a pleasure. MY RM's are hard fixed with no flex and the installation is a little harder.
You can go to: http://www.nsxprime.com/FAQ/DIY/headers.htm and check out the write ups submitted by a few of us.
HTH,
LarryB
Thanks Larry !
The Comptech headers have had two different versions that I am aware of. Up until about 97/98, the headers were manufactured by DC Sports for Comptech. The earlier headers featured the O2 sensor on the runner (vs. the collector of the newer models) and had a flex joint (vs. a ball joint as found on the current models). Comptech now manufactures their own headers.
The headers on the NSX have joints to allow flex between the headers rest of the exhaust system due to the rotation of the engine under load.
The new style Comptech headers as well as the Fujitsubo headers have a modular design that incorporates a ball joint. This also has allowed Comptech and Fujistubo to use the same runners on all years NSX, as the block is the same. DC Sports uses a flex joint and RM Racing (although, they appear to not carry the headers anymore) offer a slip-joint connection.
The DC Sports and Fujitsubo headers are the only ones to my knowledge that use equal length runners (the part from the block to the collector) that reportedly equate to better top-end power.
Cheers,
-- Chris
[This message has been edited by ScienceofSpeed (edited 10 May 2002).]
The headers on the NSX have joints to allow flex between the headers rest of the exhaust system due to the rotation of the engine under load.
The new style Comptech headers as well as the Fujitsubo headers have a modular design that incorporates a ball joint. This also has allowed Comptech and Fujistubo to use the same runners on all years NSX, as the block is the same. DC Sports uses a flex joint and RM Racing (although, they appear to not carry the headers anymore) offer a slip-joint connection.
The DC Sports and Fujitsubo headers are the only ones to my knowledge that use equal length runners (the part from the block to the collector) that reportedly equate to better top-end power.
Cheers,
-- Chris
[This message has been edited by ScienceofSpeed (edited 10 May 2002).]
Still undecided... however if I make it I'll not only want to check out your headers but your Tubi too!
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Russ
'91 black/black
Chris,
Your point is very interesting about the headers. I did not make the connection about different length tubes, but.... In my last install of DC headers I had to either raise the engine or lower the rear beam to get the rear header in place. I noticed that this procedure was mentioned in the CompTech install guide, however I DID NOT have to do this for my RM headers. Perhaps that is why.
Thanks,
LarryB
Your point is very interesting about the headers. I did not make the connection about different length tubes, but.... In my last install of DC headers I had to either raise the engine or lower the rear beam to get the rear header in place. I noticed that this procedure was mentioned in the CompTech install guide, however I DID NOT have to do this for my RM headers. Perhaps that is why.
Thanks,
LarryB
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