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
Piston Clearances
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="oexing" data-source="post: 104559" data-attributes="member: 1493"><p>Sorry, I cannot see the logic in some arguments: The fact that the liner reaches down a lot does not matter much as that part of the liner is "oil cooled" by the crank case due to the minimum gap that is filled with oil no doubt. And there you´d see less than 100 degrees C my guess, less than at the air cooled part. The Yamaha have same shrunk in liner, see picture, so should have same troubles - but don´t, even though the cylinder is a stressed member unlike the Vincent part. . These have shorter stroke, the chain tunnel one side so no even heat all around but still about 3 thou clearance. The oil flow is only down that chain tunnel from the ohc, not very much with that oil pump to be a factor. Free air flow for this single is not a statement I´d put too loudly as there is a lot of shading from the front mudguard. This may lead to lower cylinder temps for the REAR cylinder on V-twins . </p><p> Anyway, I am running 5 thou in my 600 cc ALL iron head and cylinder Horex, same hp like a Comet. You can see the mighty oil pump at the crank position and nobody will deny that cooling for iron engines and heat growth is comparably miserable. So how can one ask for same 5 thou clearance in an all alu engine ?? Where´s the logic ??</p><p> As to oil creeping up the liner, stand the cylinder in an oven at min. 150 degrees C for a while . When you find the muff at the bottom, scrap that junk or get an oversized liner. No reason to argue about this, nor about distorted liners or out of round honed items. You cannot give advice on junk parts. So far I´d go with Greg for 3.5 thou safety, he got most of experience here I guess.</p><p></p><p> Vic</p><p></p><p>Yamaha vs. Vincent</p><p>[ATTACH=full]25968[/ATTACH]</p><p></p><p>[ATTACH=full]25969[/ATTACH]</p><p></p><p>Horex 600 , 4 valve, 1935</p><p></p><p>[ATTACH=full]25970[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 104559, member: 1493"] Sorry, I cannot see the logic in some arguments: The fact that the liner reaches down a lot does not matter much as that part of the liner is "oil cooled" by the crank case due to the minimum gap that is filled with oil no doubt. And there you´d see less than 100 degrees C my guess, less than at the air cooled part. The Yamaha have same shrunk in liner, see picture, so should have same troubles - but don´t, even though the cylinder is a stressed member unlike the Vincent part. . These have shorter stroke, the chain tunnel one side so no even heat all around but still about 3 thou clearance. The oil flow is only down that chain tunnel from the ohc, not very much with that oil pump to be a factor. Free air flow for this single is not a statement I´d put too loudly as there is a lot of shading from the front mudguard. This may lead to lower cylinder temps for the REAR cylinder on V-twins . Anyway, I am running 5 thou in my 600 cc ALL iron head and cylinder Horex, same hp like a Comet. You can see the mighty oil pump at the crank position and nobody will deny that cooling for iron engines and heat growth is comparably miserable. So how can one ask for same 5 thou clearance in an all alu engine ?? Where´s the logic ?? As to oil creeping up the liner, stand the cylinder in an oven at min. 150 degrees C for a while . When you find the muff at the bottom, scrap that junk or get an oversized liner. No reason to argue about this, nor about distorted liners or out of round honed items. You cannot give advice on junk parts. So far I´d go with Greg for 3.5 thou safety, he got most of experience here I guess. Vic Yamaha vs. Vincent [ATTACH type="full" alt="25968"]25968[/ATTACH] [ATTACH type="full" alt="25969"]25969[/ATTACH] Horex 600 , 4 valve, 1935 [ATTACH type="full" alt="25970"]25970[/ATTACH] [/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
Piston Clearances
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