The Spares Company
Club Shop/Regalia
Parent Website
Contact Officials
Machine Registrar
Club Secretary
Membership Secretaries
MPH Editor and Forum Administrator.
Section Newsletters
Technical Databases
Photos
Home
What's new
Latest activity
Forums
New posts
What's new
New posts
Latest activity
Information
Bike Modifications
Machine Data Services
Manufacturers Manuals
Spare Parts Listings
Technical Diagrams
Whitakerpedia (Vincent Wiki)
The Club
MPH Material Archive
Flogger's Corner
Obituaries
VOC Sections
Local Sections
Local Section Newsletters
Miscellaneous
Club Assets
Club History
Club Rules
Machine Data Services
Meeting Documents
Miscellaneous
Essential Reading
Magazine/Newspaper Articles/Letters
Adverts and Sales Brochures
The Mighty Garage Videos
Bikes For Sale (Spares Company)
Log in
Register
What's new
New posts
Menu
Log in
Register
Install the app
Install
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big Bore Comet
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="greg brillus" data-source="post: 176415" data-attributes="member: 597"><p>Yes very clever man that.......I remember speaking to him on several occasions when I built the twin racer years ago, and he told me some of the detail in building Ian Boyd's engine.......The rework he did to the cylinder head was something else.......Not sure if he changed the valve angles but he raised the ports and squish band the chamber plus much more.......He said the head was like Plasticine and soft as butter.......not sure why they didn't re heat treat it.....but that is risky in itself.......They bought some super expensive piece of super rare material to machine up a conrod from.......i know it cost Ian a huge amount of money to build.......probably done in a similar way to Geoff Clatworthy's ES 4 Norton single........almost untouchable those machines.......500 single pushrod engine, with full fairing, 107 Kg's, and over 60 HP........A very tall order to beat that.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 176415, member: 597"] Yes very clever man that.......I remember speaking to him on several occasions when I built the twin racer years ago, and he told me some of the detail in building Ian Boyd's engine.......The rework he did to the cylinder head was something else.......Not sure if he changed the valve angles but he raised the ports and squish band the chamber plus much more.......He said the head was like Plasticine and soft as butter.......not sure why they didn't re heat treat it.....but that is risky in itself.......They bought some super expensive piece of super rare material to machine up a conrod from.......i know it cost Ian a huge amount of money to build.......probably done in a similar way to Geoff Clatworthy's ES 4 Norton single........almost untouchable those machines.......500 single pushrod engine, with full fairing, 107 Kg's, and over 60 HP........A very tall order to beat that. [/QUOTE]
Insert quotes…
Verification
What was Mr Irving's Christian Name?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big Bore Comet
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top