Derrington style exhaust headers on 100-4's

[bighealeysource]

Hey y'all,
Anyone out there have the Derrington style headers on their BN1 or BN2 - cylinders 1 & 4 into one pipe and 2 & 3 into another pipe ? And if someone might have this type exhaust manifold, does it use a muffler with two inlets and two outlets and twin tail pipes ? Very similar if not the same as the set up on a 100-6 or early 3000. I've got the Derrington style headers or could even be from Derrington, don't know, but only one outlet on the muffler. Thinking of putting on a 100-6 style muffler with either twin tail pipes or twin side exhaust pipes and trying to find anyone who has done something similar.
Thanks,
Mike

 

[Patrick67BJ8]

Hey y'all,
Anyone out there have the Derrington style headers on their BN1 or BN2 - cylinders 1 & 4 into one pipe and 2 & 3 into another pipe ? And if someone might have this type exhaust manifold, does it use a muffler with two inlets and two outlets and twin tail pipes ? Very similar if not the same as the set up on a 100-6 or early 3000. I've got the Derrington style headers or could even be from Derrington, don't know, but only one outlet on the muffler. Thinking of putting on a 100-6 style muffler with either twin tail pipes or twin side exhaust pipes and trying to find anyone who has done something similar.
Thanks,
Mike

I purchased a hardtop for my BJ8 from Nick Freeman of Nical Engineering in the UK. He had discussed cams with me and recommended a "Derrington" cam for my BJ8. Point is, he appeared to be knowledgeable about Derrinton stuff so you may want to contact Nick about the exhaust.

 

[mwagon]

Noticed your old post. If you haven't gotten an answer yet, contact Kent Lambert with the Oregon Healey club. Kent's 100 LeMans has the Darrington Header going into a single muffler inlet & exit. I remember Kent trying two different manufactures & one didn't fit. Send me a PM, if you need his contact info

 

[Bob_Spidell]

I was looking for headers myself the other day and came across a site that sold a supposedly exact copy of the original Derrington (although I think they were SS). I can't for the life of me find the page now, but did come across this:

https://www.bastuck.de/00reloaded/media/F...age%20d_f_e.pdf

Amazing who's supplying stuff the Healeys.

 

[bighealeysource]

Thanks guys - I ended up installing a dual inlet and dual outlet ss muffler from AH Spares with a dual outlet side exhaust. Looks great and sounds great, not too loud but closer to my BN6 big six exhaust note !
Happy New Year,
Mike