BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
  JWood Auction  
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
Photo posting tutorial

Member Spotlight
Dick1969
Dick1969
The Netherlands
Posts: 91
Joined: December 2006
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
226 registered members (57nortonmodel77), 1,777 guests, and 516 spiders.
Key: Admin, Global Mod, Mod
Newest Members
XTINCT, Bruce Roberts, Brian Ellery, Jon Andrews, Berni Ernst
9957 Registered Users
Top Posters(30 Days)
btour 189
koan58 100
Stuart 86
NickL 71
Popular Topics(Views)
437,557 mail-order LSR
Forum Statistics
Forums33
Topics65,279
Posts632,262
Members9,955
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate This Thread
#101465 - 09/20/06 10:48 pm 650 camshaft part numbers  
Joined: Apr 2006
Posts: 190
retired-fireman Offline
BritBike Forum member
retired-fireman  Offline
BritBike Forum member

Joined: Apr 2006
Posts: 190
Sydney Australia
Could someone please I.D. these cams for me, they are in a 66 650 T-bird. Part no's are inlet 71-0042 and Ex is 70-9990. Do I need "R" tappets on the exhaust and would the rocker clearences be the standard 002 in and 004 ex. Many thanks.
Retired-fireman
76TR7 and 5 others! smile

Support Your #1 BritBike Forum!
Membership Type! Free
Member
Premium
Member
Premium Life
Member
Vendor
Member
Site
Sponsor
Recognition No Premium Member Premium Life member (5 years) Vendor Member Site Sponsor Membership
Post commercial threads No No No Yes Yes
Custom title No Yes Yes Yes Yes
Upload avatar & photos No Yes Yes Yes Yes
Link avatar & photos Yes Yes Yes Yes Yes
Private Message Storage: 10 100 100 100 100
Length of signatures 255 600 600 600 600
Removes this very advert island between post 1&2 No Yes Yes Yes Yes
Price Free $12.90/year $105.00 No End
$55.00/5 years
$210.00/year
($17.50/month)
Email
Click on button >>
  Premium Member Premium Life member Vendor Member Site Sponsor Membership
#101466 - 09/21/06 12:23 am Re: 650 camshaft part numbers  
Joined: Mar 2006
Posts: 135
tech 108 Offline
BritBike Forum
tech 108  Offline
BritBike Forum

Joined: Mar 2006
Posts: 135
Florida
Hello from tech 108, I have a 1966 TR6 SR which uses different cams then you do but my Triumph parts book for that year shows a E-4818 cam number
and E-4848 for the exhaust.Perhaps they are superseded by another number. The R tappet has a increased radius for quieter operation and some other oil holes for increased oiling. I go with
.003 valve clearance so I have to buy only one feeler blade at a time. You will never hear the clearance difference over the vibration

#101467 - 09/21/06 1:40 am Re: 650 camshaft part numbers  
Joined: Mar 2005
Posts: 9,965
John Healy Online content
John Healy  Online Content



Joined: Mar 2005
Posts: 9,965
Boston, Massachusetts
"The R tappet has a increased radius for quieter operation "

No!


#101468 - 09/21/06 3:03 am Re: 650 camshaft part numbers  
Joined: Apr 2006
Posts: 190
retired-fireman Offline
BritBike Forum member
retired-fireman  Offline
BritBike Forum member

Joined: Apr 2006
Posts: 190
Sydney Australia
Thanks John but do you know what these cams are out of and the rocker clearence.

#101469 - 09/21/06 12:52 pm Re: 650 camshaft part numbers  
Joined: Mar 2005
Posts: 9,965
John Healy Online content
John Healy  Online Content



Joined: Mar 2005
Posts: 9,965
Boston, Massachusetts
"Part no's are inlet 71-0042 and Ex is 70-9990"

Numbers on camshafts? If so, are casting/blank part numbers, not part numbers as they appear in books.

I believe what you have is a 70-9989 1969-72 exhasut cam and a 71-1063 1969-72 intake cam.

Here is a list I have gathered from several sources. Sorry it didn't copy all of the "tabs" so it looks a bit dishoveled.

Group 1 — High Performance - E3134 "Q" Cam Form
Part # Code Casting # Timing Detail
E3134 E3134 I0 34° BTDC - IC 55° ABDC - EO 55° BBDC - EC 34° ATDC Inlet or exhaust
E4819 X E3134 " " " " Inlet 5047 YCP E5048 " " " " Exhaust E5162 XCP E4602 " " " " Inlet
E10040 XN E10040 " " " " Inlet
E10041 YN E10041 " " " " Exhaust
E4038 SG E3838 " " " " Inlet
E4039 E3838 " " " " Exhaust
E4678 E4679 " " " " Inlet
E5044 YCP E5045 " " " " Exhaust
E5047 Y* " " " " Exhaust
E5163 CP E4679 " " " " Inlet
E6965 Y E6642 " " " " Exhaust
E10043 N E10043 " " " " Inlet
El 0047 E10050 " " " " Exhaust
E11063 N 71-0040 " " " " Inlet
E11064 N 71-0043 " " " " Inlet
E9983 YN 70-9986 " " " " Exhaust
E9984 YN 70-9987 " " " " Exhaust
E9989 YN 70-9990 " " " " Exhaust
Note: 1. Running clearance .002 in. intake and .004" exhaust.
2. Take readings at .020 in. follower lift with "std" radius (3/4 in.) followers
3. Lobe Center 100.5°
4. Duration 269 °
5. Lift .314 in.
Group 2 — High speed touring - E3325 Cam Form
E3325 E3325 IO 27° BTDC - IC 48° ABDC - EO 48° - BBDC - EC 27 ATDC Inlet or Exhaust
E4818 X E4997 " " " " Inlet
E4848 Y E4560 " " " " Exhaust
E4855 Y E4561 " " " " Exhaust
E4931 " " " " Inlet
E4022 SG E3838 " " " " Inlet
E4023 E4679 " " " " Exhaust
E4786 Y E4679 " " " " Exhaust
E10046 YN E10049 " " " " Exhaust
Note: 1. Running clearance .002 in. intake and .004" exhaust.
2. Take readings at .020" follower lift with "std" radius (3/4 in.) followers
3. Lobe center 100.5°
4. duration 255°
5. Lift .296 in.
Group 3 — Ramp cam form (standard) — Quieting ramps
E3275 E3265 IO 26.5° BTDC - IC 69.5° ABDC - EO 61.5° BBDC - EC 35.5° ATDC Inlet or Exhaust
E3838 SG E3838 " " " " Inlet
E3839 E3838 " " " " Exhaust
E5341 Y E5342 " " " " Exhaust
Note: 1. Running clearance .010 in Intake and Exhaust.
2. Take readings at .020" follower lift using “std” followers.
Group 4 — Modified ramp form (racing)
Thruxton Bonneville
E4220 E4220 Valve lift at TDC with nil clearance 0.195/0.175" Intake or Exhaust
E6267 E4220 Valve lift at TDC with nil clearance 0.205/0.215" Intake
E6147 Y E6146 Valve lift at TDC with nil clearance 0.165/0.175" Exhaust
Note: 1. Running clearance E4220 .008 in. E6267 & E6147 .013 in.
2. Valve timing taken in inches of VALVE lift at T.D.C. with valves set at nil clearance for checking.
3. E6267 and E6147 must be used with 3" radius cam followers and special guide blocks.

Key to Codes: X = Breather Y = Contact breaker n = nitrited CP = Copper plated SG = Spiral gear (distributor drive)



Moderated by  John Healy 


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
UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.573s Queries: 14 (0.061s) Memory: 0.8239 MB (Peak: 0.9682 MB) Zlib disabled. Server Time: 2017-11-22 02:08:58 UTC