[Dirk777]

Hi everybody,
I got myself Daytona cams of unknown origin to boost my 2010 STR as described in this forum several times. The preferred cams for this mod are accordingly the "<2009" cams, due to changes in the cylinder head afterwards. To find information to identify my "new" cams I searched the web and had the following results:

Up to VIN 381274 (Daytona 675) the following parts that fit 1:1 into the elder STR were used:

Inlet cam	Exhaust cam	Sprockets	Camchain
T1140051	T1140052	T1141060	T1140765

The sprockets and the chain are the same as used in the STR first series.Valve clearance is the same

From VIN 381275 ( ca. 2010) the Daytona head was modified, got the hydraulic CCT, slightly smaller valve buckets for the exhaust valves, a modified Exhaust cam and other minor changes. The Inlet cam was still the same, the sprockets and the chain were also altered or just got a new part number:

Inlet cam	Exhaust cam	Sprockets	Camchain
T1140051	T1140123	T1141070	T1140768

The sprockets and the chain were also used for the STR then, valve clearance on the exhaust has to be 0,05mm larger due to the modified exhaust cam. On the Inlet side everything remains the same.

Now I have to know which exhaust cam I have on the bench, (T1140052 or T1140123 ?) to adjust the exhaust valve clearance correctly.
Cam T1140052 came together with Sprocket T114060 ex works, the same sprockets that are on my original STR cams.
In fact all 4 mounted sprockets I have, look identical.
Does the later sprocket T1141070 that came with the >2009 cam T1140123 look identical to the elder sprockets? Do the numbers on the driveside of the cams differ?
I looked at all pictures from 675 cams I could find in the web and saw sprockets with another appearance, these sprockets have an additional 8 stamped, an two lines as timing marks, whereas mine have only one timing mark.
Is this a possibility to identify the newer cam/sprocket?

Any help would be appreciated!

Best regards
Dirk

 

[Dirk777]

T1141070 ??? Daytona 675 after VIN 381275

 

[Far Canal]

I've got a couple spare cams laying around from a 2010 Daytona. I'll take some photos for you later today.

 

[Dirk777]

I've got a couple spare cams laying around from a 2010 Daytona. I'll take some photos for you later today.

Thanks a lot in advance!

 

[Far Canal]

Here you go...my VIN is 476110. There are numbers on the cams as well. Let me know if you can't read them
Exhaust cam is first and on the right and it has two timing marks. The inlet cam is 2nd and on the left and only has one timing mark.

 

[Dirk777]

Thank you very much! Have these cams been the original equipment ex works of VIN 476110?
All other pics I saw from engines showed the same appearance of both sprockets ?!
In your case it is mixed.....
If the data from Triumph is correct your Ex-Cam should be part No. T1140123 with sprocket T1141070 and require 0,325-0,375 mm valve clearance, the hydraulic CCT should be fitted originally.
IN-Cam is T1140051.

These are my original Street 2010 VIN 43**** cams with never detached sprockets, I assume that "22" corresponds to the manufacturing date....the higher this number, the later the production date.

 

[Far Canal]

My apologies. It was a long time ago but now that I think back I remember the motor is not originally from this bike.

 

[Fallen]

My apologies. It was a long time ago but now that I think back I remember the motor is not originally from this bike.

Hi there,
In the photos I see your exhaust cam has the casting number 114 444 which is the same as the cam I'm looking for however, I thought mine was an intake cam?
Do you have any further information on the bike these came from or where I could source them please?
Thanks

 

[Dirk777]

Good morning Fallen,

the cast numbers were the same on all of the cams up to 2009 I have seen. Ex and In cams shared the same cast, but were machined different. Sorry but I don't now if that is the same for the newer cams. You can identify the cam near the sprocket flange, "I" is inlet, "E" is exhaust.
For what cam are you looking, in what engine shall it fit?
Best regards

 

[Fallen]

Good afternoon Dirk,
I'm working on a Formula Student team to rebuild a Triumph engine however, we have no information on what the engine is only that it came from a motorsport team who were using it in British Superbike.
When doing a compression test I found 2 of the valves weren't sealing so I've had the head off to re-lap them. But then when I put the head back on and went to install the cams I realised the end of one was cracked - only in the slot to locate the timing gears. Having done some further research I belive this is a Daytona 675R thing hence the cam numbers are 1144 444 and it is also a very common point of failure. I'm also not sure if there is any variation in these cams?
Thanks

 

[Dirk777]

Hi,
the cast No. Does not say much about the cams. What is stamped into the drive end of the cam? What is the diameter of the exhaust valve buckets?
The "R" models only differ in brakes, suspension and some equipment. The engines are the same as the nonR.
Good night.