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Old 05-08-2017, 05:11 AM   #1
Adam Lonergan
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Default Triumph odd ball cam

Evening guys, I have a t120 basket case that I am wrangling into a motor, I have a cam with 'REO' on it, does this mean anything to anyone, I cant seem to find any info. I'm guessing maybe an old aftermarket item?
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Old 05-08-2017, 05:43 AM   #2
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Default Re: Triumph odd ball cam

pic attached
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Old 05-08-2017, 03:55 PM   #3
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Default Re: Triumph odd ball cam

That O looks like a zero. I know, big help.
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Old 05-09-2017, 03:12 AM   #4
Adam Lonergan
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Default Re: Triumph odd ball cam

I thought that as well, but have come up with nothing, not very often you cant find out what a part is nowadays! seems to be a bit of a mystery
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Old 05-09-2017, 03:27 AM   #5
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Default Re: Triumph odd ball cam

Is it an old Kiwi speed part?,you guys have a very rich history of go fast engineering.What is the lift and the base circle diameter It would be good to have a photo of the actual cam lobes out of interest.
Cheers R
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Old 05-09-2017, 03:36 AM   #6
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Default Re: Triumph odd ball cam

here is a photo of it (on the left) next to the other cam normal part number for a t120. It is definitely beefier than the t120 cam. It visibly looks like the right cam. Where is the circle base diameter measured from?
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Old 05-09-2017, 03:38 AM   #7
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Default Re: Triumph odd ball cam

close up of the lobes
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Old 05-09-2017, 03:46 AM   #8
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Default Re: Triumph odd ball cam

The lobes are 1.117 inch at highest point so seems pretty close to stock?
You may be right it could be an old kiwi part and that is why all my searching is coming up blank?
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Old 05-09-2017, 07:19 AM   #9
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Default Re: Triumph odd ball cam

thats the ultra rare 'Speedwagon' cam!!!
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Old 05-10-2017, 03:07 AM   #10
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Default Re: Triumph odd ball cam

The base circle is the bottom round section of the cam(heel) before the ramps to the flanks of the cam start ;for this exersise just measure across from the opening side to the closing side of the cam at the bottom that should give a fair indication of the base circle Dia . To get lift subtract that base circle dia from the measurement you get from the bottom of the cam to the top of the cam lobe..
Can you do a side on photo I cant see the profile ,are the flanks the same or is there a different shape to them in comparison to stock?
Cheers R
PS I am liking the REO Speedwagon reference to this cam ,its can hold a high state of tune Ha ha
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Old 05-10-2017, 06:02 AM   #11
Adam Lonergan
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Default Re: Triumph odd ball cam

Righto, the RE0 cam (on the left in both pictures) measures .314 for lift and the stock cam (71-106) measures .307 of lift.
So I don't think I have a hot cam, I think it is stock or close to a stock grind, thanks heaps for your guys help (once again JJ pulls through)
Although it is a bit baffling the 'RE0' stamp
I take it I can run the cam no probs even though it is slightly different to the other one?
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Old 05-11-2017, 05:46 AM   #12
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Default Re: Triumph odd ball cam

If all the journals measure up within specs you might aswell run it.Thanks for posting the side profiles of the cam ,as you say its very much in keeping with a later stock cam overall .
Cheers R
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Old 05-12-2017, 06:00 AM   #13
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Default Re: Triumph odd ball cam

My opinion, you should mock up the cam in a set of crankcases ,crank with one piston and cylinders. The find TDC and check the cam timing....
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Old 05-13-2017, 03:24 AM   #14
Adam Lonergan
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Default Re: Triumph odd ball cam

yes I think I will do that just for piece of mind, thanks for all the awesome advice gents.
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