Ausmini
It is currently Fri Mar 29, 2024 2:04 am

All times are UTC + 10 hours




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 
Author Message
PostPosted: Wed May 25, 2016 6:58 pm 
Offline
848cc
848cc

Joined: Fri Nov 09, 2007 4:13 pm
Posts: 210
Location: Sydney, south west
Thought this might help some others..

Cam gears are next... I was told by someone we all know that these would be a pain after I bought them....he wasn't wrong :shock: Got quality gear and chain...woeful instructions though. took me a while to figure it out..but I did sort it out in the end and Ill tell you how so you dont age like I did :lol:
Image
Install gears (should slide on with only human effort) and check with straight edge for aluignment and shim crank gear accordingly
Image
Install piston No 1 (without rings) in bore and bring to TDC using a dial gauge and timing disc (in next pic)
Image
At TDC, with the crank gear in the 0 degree keyway slot, align the dots like a regular cam gear set timing set up. The dot on the camshaft gear should align with the 0 stamp on the crankshaft gear

With a cam follower in lobe 2, and a pushrod located to your dial gauge, turn motor clockwise and get a degree reading for full lift on the cam (look up you tube or books etc to see a full guide to timing in your cam, Im just illustrating the complexity with this particular Rollmaster gear set)
Image
My reading came in at 110 degrees,(4 degrees retarded) so i know i need to advance the cam by at least 6 degrees to allow for chain stretch. What you do next is return the crank back to TDC, then remove the chain and gear set, re install the gear (or sprocket :P ) on the cam and install the crank gear on the +6 degree keyway slot as pictured
Image
Move the crank and cam sprokets slightly to align the dot and the +6 degree stamping on the crank gear as in the above picture (like you would align dots on a standard duplex set)
While not moving the crank or the cam, remove both sprockets, and reinstall with the chain....and you are done.
Image
Always a good idea to reinstall dial guage and timing disc and check with head and rockers on to load up the chain...but thats it.. I know others have had difficulties with this set so I hope sharing has helped someone else :mrgreen:

_________________
66 MK 1 Cooper S
64 Grp N Cooper S
64 Grp N Cooper S (ex Bob Asher)
64 GRP N Cooper S (ex Fred Burley)


Top
 Profile  
 
PostPosted: Wed May 25, 2016 9:04 pm 
Offline
Yay For Hay!
User avatar

Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15861
Location: Wodonga - Vic/NSW border
oh wow - the new sets have numbers stamped in them!! when I've done them they only have dots and the dodgy instructions - you had it easy!!

took me a few goes to get it right, but it's not too bad once you have your head around it

GR hates them :lol:

_________________
did I tell you that I won a trophy?


Top
 Profile  
 
PostPosted: Wed May 25, 2016 9:05 pm 
Offline
Yay For Hay!
User avatar

Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15861
Location: Wodonga - Vic/NSW border
making this a how-to BTW...

_________________
did I tell you that I won a trophy?


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 9 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.