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General Category => General Discussion => Topic started by: GuzziFuria on September 09, 2021, 05:55:36 AM

Title: LM3 and the after Market Header design mystery
Post by: GuzziFuria on September 09, 2021, 05:55:36 AM
Ciao Tutti,

Always wondered with the LM3 (possibly other T models as well) who came up with this different header design, where the initial bent right out of the cylinder, is of smaller diameter than the OEM...  Personally I prefer the OEM design, to me it flows more with the bike...

Anyone knows??

Molto Grazie
Best
Carlito

Polished aftermarket vs OEM

(https://i.ibb.co/PFNxLd9/IMG-1577.jpg) (https://ibb.co/PFNxLd9)

OEM Header

(https://i.ibb.co/9TKjSZV/LM3-OEM-Headers.jpg) (https://ibb.co/9TKjSZV)

Aftermarket Header design

(https://i.ibb.co/nzhXnt8/LM3-Headers-aftermarket.jpg) (https://ibb.co/nzhXnt8)


Title: Re: LM3 and the after Market Header design mystery
Post by: jwinwi on September 09, 2021, 12:42:29 PM
Those look like BUB headers; they were probably sized and shaped that way based on results from a Dyno. Form follows function?  :popcorn:
Title: Re: LM3 and the after Market Header design mystery
Post by: dguzzi on September 09, 2021, 02:57:52 PM
  I agree,the Bub's for Norton had the same form.
Title: Re: LM3 and the after Market Header design mystery
Post by: Groover on September 09, 2021, 03:35:39 PM
is the crossover high up on the headers?
Title: Re: LM3 and the after Market Header design mystery
Post by: GuzziFuria on September 09, 2021, 07:20:38 PM
is the crossover high up on the headers?

No it has the regular H-pipe which sits under the tranny...
These were made by a company in the UK www.keihan.co.uk (http://www.keihan.co.uk), they probably replicated Bub's design...
Keihan also builds a set of Replica Lafranconi Riservato Competition for LM3 #1129, build exactly like the originals but in SS and no RC stampings...

(https://i.ibb.co/Rhhtv2Z/Lafranconis-RC-Replica-SS.jpg) (https://ibb.co/Rhhtv2Z)


Mistral also build a set of headers with the high crossover keeping the OEM shape like their standard headers...

(https://i.ibb.co/LhHZWj9/LM3-headers-hi-H-pipe.jpg) (https://ibb.co/LhHZWj9)