I think the original cobras had 2.5" exhaust systems, is that right? I think the Hawk one is a 3" one (not actually measured it though - maybe I need to recalibrate my eye).
Anyway, I thought this piece of testing by Hotrod magazine was quite interesting:
https://www.hotrod.com/articles/engine- ... h-exhaust/
2.5" versus 3" exhaust
Re: 2.5" versus 3" exhaust
Well who’s a lucky boy if you have a 3” or even a 2.5”
Just measured mine at 2.25” at the down pipe and 2.125” for the remainder. Suggests 2” bore with 1/16” wall.
Peter C
Just measured mine at 2.25” at the down pipe and 2.125” for the remainder. Suggests 2” bore with 1/16” wall.
Peter C
- simonjrwinter
- Posts: 1357
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Re: 2.5" versus 3" exhaust
It’s not how big it is...it’s how you use it....
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.
Re: 2.5" versus 3" exhaust
Gents,
i'm in the situation to re-do my exhaust system and i'm wondering if anyone is using and can thereof provide some pictures and infos of Gerrys standard setup for the 289 FIA sidepipes (siderails). I have some inserts from Classicchambered Exhaust which will fit into a 3'' pipe (no muffler visible from outside), and i think Gerry setup could be at least a good starting point.
Thank you for the help!
Ronald
i'm in the situation to re-do my exhaust system and i'm wondering if anyone is using and can thereof provide some pictures and infos of Gerrys standard setup for the 289 FIA sidepipes (siderails). I have some inserts from Classicchambered Exhaust which will fit into a 3'' pipe (no muffler visible from outside), and i think Gerry setup could be at least a good starting point.
Thank you for the help!
Ronald
- nikbj68
- T289R Member
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- Location: Anglesey, North Wales.
- Contact:
Re: 2.5" versus 3" exhaust
Here is one of my sidepipes, the downpipes from the headers are 2 1/4”.
(Rover 3.5)
(Rover 3.5)
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Hawk 289 FiA...AT LAST!!!
Re: 2.5" versus 3" exhaust
The additional bend is to connect a silencer (when needed)
Karl
Karl
Re: 2.5" versus 3" exhaust
Untouchable, i think im one of the lucky ones who has no sound restriction on my car papers, there is somewhere a code where police can see that. So i can put anything unther my obra and no ticket, just have to make some demoers for the TUV
Re: 2.5" versus 3" exhaust
Thanks for the picture Nic