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
CR and ignition timing on a B series single
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="CoreyL" data-source="post: 100840" data-attributes="member: 3835"><p>Hi All,</p><p></p><p>My B Meteor recently started to nip up - I caught it before it well and truly seized. I pulled the engine apart to look at the piston and liner. There were signs of extreme heat being seen by the piston. I rebuilt the motor (after cleaning up the liner and verifying the correct interference fit between liner and muff). I put a CP Carrillo forged +0.020" 8:1 piston in the engine with 0.005" piston clearance.</p><p></p><p>I measured the actual compression ratio while the engine was apart (using a buret and calculator) and found it to be 7.1:1.</p><p></p><p>I'm currently running a modern BTH magneto fully advance at 35 degrees BTDC. My question: does this sound like too much advance for a 7:1 CR and modern fuels?</p><p></p><p>Thanks in advance for any insights!</p></blockquote><p></p>
[QUOTE="CoreyL, post: 100840, member: 3835"] Hi All, My B Meteor recently started to nip up - I caught it before it well and truly seized. I pulled the engine apart to look at the piston and liner. There were signs of extreme heat being seen by the piston. I rebuilt the motor (after cleaning up the liner and verifying the correct interference fit between liner and muff). I put a CP Carrillo forged +0.020" 8:1 piston in the engine with 0.005" piston clearance. I measured the actual compression ratio while the engine was apart (using a buret and calculator) and found it to be 7.1:1. I'm currently running a modern BTH magneto fully advance at 35 degrees BTDC. My question: does this sound like too much advance for a 7:1 CR and modern fuels? Thanks in advance for any insights! [/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
CR and ignition timing on a B series single
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