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
Offset ET28 hole in ET25 for more valve lift
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="johnmead" data-source="post: 52662" data-attributes="member: 776"><p>Thank you. That is the type of information I am looking for. Real world experience instead of pontificating by someone that likes to see himself in print.</p><p></p><p>I am using the new Terry Prince heads with squish, 92mm pistons and a 92mm press together crankshaft. With .500 lift the MK5 cams will have a max spring pressure of 257 lbs, which is not overly high. The beehive springs will coil bind at .850 so .500 lift will not be a problem in that area.</p><p></p><p></p><p>The MK5s make max HP point is 6800rpm and the crank is good for 9500rpm. Drive side mainshaft is 30mm with tapered Timken bearings.</p><p></p><p>I have plots of the MK5 cams that I did with a pair of dial gauges mounted in modified "D" breather caps along with a degree wheel and they are symmentrical for both .433 on the intake and .413 on the exhaust.</p><p></p><p>Do you have any contact information for John Trease as I would like to talk with him.</p><p></p><p>Both heads were flowed on a Flowmaster FL600 flowbench and the flow continued rising after reaching .500. Hence the question.</p><p></p><p>John Mead</p></blockquote><p></p>
[QUOTE="johnmead, post: 52662, member: 776"] Thank you. That is the type of information I am looking for. Real world experience instead of pontificating by someone that likes to see himself in print. I am using the new Terry Prince heads with squish, 92mm pistons and a 92mm press together crankshaft. With .500 lift the MK5 cams will have a max spring pressure of 257 lbs, which is not overly high. The beehive springs will coil bind at .850 so .500 lift will not be a problem in that area. The MK5s make max HP point is 6800rpm and the crank is good for 9500rpm. Drive side mainshaft is 30mm with tapered Timken bearings. I have plots of the MK5 cams that I did with a pair of dial gauges mounted in modified "D" breather caps along with a degree wheel and they are symmentrical for both .433 on the intake and .413 on the exhaust. Do you have any contact information for John Trease as I would like to talk with him. Both heads were flowed on a Flowmaster FL600 flowbench and the flow continued rising after reaching .500. Hence the question. John Mead [/QUOTE]
Insert quotes…
Verification
The Series 'A' Rapide was known as the '********' Nightmare?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Offset ET28 hole in ET25 for more valve lift
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