BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
Jwood & co JRC Engineering dealers Jwood & co
Home | Sponsors, Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons, "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Member Spotlight
east end rider
east end rider
long Island NY
Posts: 25
Joined: June 2007
Show All Member Profiles 
Shout Box
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Who's Online Now
26 registered members (Beach), 227 guests, and 450 spiders.
Key: Admin, Global Mod, Mod
Newest Members
hondapete1950, Gaspare, eberhard, Norman Woollons, LandoLando
10257 Registered Users
Top Posters(30 Days)
Stuart 77
Lannis 60
TBolt72 46
Popular Topics(Views)
609,565 mail-order LSR
Forum Statistics
Forums34
Topics67,125
Posts651,431
Members10,257
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate Thread
ZB Touring Cam Specs #710776
10/07/17 11:10 am
10/07/17 11:10 am
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
R
Rich B Offline OP

BritBike Forum member
Rich B  Offline OP

BritBike Forum member
R
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
I have looked around in my literature and seem to have a lot of blanks. So, I will ask here.

Does anyone have the specs for the ZB touring cams 65-2438 & 65-2436? I just acquired a set for a long stalled M33 project and would like to record the cam info before I install them.


Life is too short to drink cheap, bad beer.
Support your #1 BSA Forum and our favorite sponsors

Check out BSA on e-bay: BSA Parts in UK, BSA Motorcycles in UK, BSA Parts in North America, BSA Motorcycles in North America

 
 
Re: ZB Touring Cam Specs [Re: Rich B] #710816
10/07/17 9:33 pm
10/07/17 9:33 pm
Joined: Feb 2011
Posts: 3,463
Orygone
Boomer Offline

BritBike Forum member
Boomer  Offline

BritBike Forum member
Joined: Feb 2011
Posts: 3,463
Orygone
I have those cams in my BB34GS and had a hard time finding info. I think it was in Nickerson book that said .002 nd .004. They are the same profile as 65-2448 and 65-2450 except those have Hosting ramps and wider clearances.


Bill B...


Boomer
Re: ZB Touring Cam Specs [Re: Boomer] #710830
10/07/17 11:56 pm
10/07/17 11:56 pm
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
R
Rich B Offline OP

BritBike Forum member
Rich B  Offline OP

BritBike Forum member
R
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
Thanks Bill.

I had kind of "assumed" the specs were similar to the later touring cams. But just wanted to have a better idea what I am installing. Got to take advantage of the larger valves and ports some one had put into the head I am using.


Life is too short to drink cheap, bad beer.
Re: ZB Touring Cam Specs [Re: Boomer] #710883
10/08/17 4:18 pm
10/08/17 4:18 pm
Joined: Feb 2011
Posts: 3,463
Orygone
Boomer Offline

BritBike Forum member
Boomer  Offline

BritBike Forum member
Joined: Feb 2011
Posts: 3,463
Orygone
Originally Posted by Boomer
I have those cams in my BB34GS and had a hard time finding info. I think it was in Nickerson book that said .002 nd .004. They are the same profile as 65-2448 and 65-2450 except those have Hosting ramps and wider clearances.


Bill B...




Typed that on my phone and sent before I saw the auto corrected spelling. That should say quieting ramps.


Have fun with the valve adjusting. It takes three open end wrenches and feeler gauges along with a set of arthritic fingers to fit into a 2" by 3" opening. Usually takes me a couple of hours to do this chore.


Bill B...


Boomer
Re: ZB Touring Cam Specs [Re: Rich B] #711149
10/10/17 9:43 pm
10/10/17 9:43 pm
Joined: Feb 2015
Posts: 135
UK
F
flowboy Offline
BritBike Forum member
flowboy  Offline
BritBike Forum member
F
Joined: Feb 2015
Posts: 135
UK
I have timing for the 65-2438 & 65-2436 as; 43 73 70 45, with gaps checked at .001" in ZB ally engines.
Listed as Touring, Clubmans & Racing cams '49-'51 (with 10 deg. advance pinion in case of 350 racing.
Timing is taken from the cams that directly replaced them, as Boomer said; 65-2448 & 2450. The early ones will be noisier!
Also as Boomer said, fiddly job!


na
Re: ZB Touring Cam Specs [Re: flowboy] #711164
10/10/17 11:28 pm
10/10/17 11:28 pm
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
R
Rich B Offline OP

BritBike Forum member
Rich B  Offline OP

BritBike Forum member
R
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
Thanks! Yea I know it is a fiddle job. Not so worried about noisy, hoping the cast iron M33 engine dampens the noise some.


Life is too short to drink cheap, bad beer.
Re: ZB Touring Cam Specs [Re: Rich B] #713715
11/03/17 3:18 pm
11/03/17 3:18 pm
Joined: May 2013
Posts: 30
Ireland
Z
ZeBe Offline
BritBike Forum member
ZeBe  Offline
BritBike Forum member
Z
Joined: May 2013
Posts: 30
Ireland
Is there not a consideration of higher lift and potential valve guide interference when installing GS cams (even the touring items) into a non-GS motor? I seem to recall seeing a factory note about this at some point.

Gerry

Re: ZB Touring Cam Specs [Re: ZeBe] #713771
11/03/17 11:28 pm
11/03/17 11:28 pm
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
R
Rich B Offline OP

BritBike Forum member
Rich B  Offline OP

BritBike Forum member
R
Joined: Aug 2001
Posts: 5,063
Stone Creek OH USA
I will be finding out and will report back. Comparing the cams I acquired with the stock 2420 grind to the 2442/2446 cams I have, the touring cams are not significantly more lift than the 2420 grind. But the duration is significantly more.

The head on this bike was modified some time ago and has never been used. It actually has GS valves installed. I will check for spring bind and guide interference.


Life is too short to drink cheap, bad beer.
Re: ZB Touring Cam Specs [Re: Rich B] #713868
11/04/17 9:39 pm
11/04/17 9:39 pm
Joined: Oct 2014
Posts: 58
Lancashire. England.
R
resingled Offline
BritBike Forum member
resingled  Offline
BritBike Forum member
R
Joined: Oct 2014
Posts: 58
Lancashire. England.
I have a non gold star engine (BB34) that came with 2448/50 cams and have had no problems with them. They are noisy though and I have checked them three times recently but the clearances have remained correct at 8 and 10 thou. Decided to ignore them and enjoy the ride. I have to agree that trying to adjust them is a real P I T A. Dave.

Re: ZB Touring Cam Specs [Re: Rich B] #713872
11/04/17 10:21 pm
11/04/17 10:21 pm
Joined: Aug 2015
Posts: 1,133
Bolton Lancs UK
A
Andy Higham Offline
BritBike Forum member
Andy Higham  Offline
BritBike Forum member
A
Joined: Aug 2015
Posts: 1,133
Bolton Lancs UK
I have gold star clubman cams in my 400cc B31, the power delivery is virtually linear from idle to 7000 rpm


1955 BSA B31 500cc "Stargazer"
1962 Greeves 200cc "Blue Meanie"
1962/67 Greeves 350
1967 Greeves 360 Challenger
1984 Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500cc sprint/LSR bike "Deofol"
Jawa 500cc "Llareggub"
2003 Aprilia RSV Mille "Lo Stregone"

Moderated by  Rich B 


Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.6.1.1