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 Post subject: cam help
PostPosted: Thu Mar 24, 2016 6:30 pm 
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Joined: Tue Mar 18, 2014 10:03 am
Posts: 360
Hello...
Can anyone help me with info on cams stamped....

G M
F 1
Looking for opening and closing specs.

Thank you.


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 Post subject: Re: cam help
PostPosted: Fri Mar 25, 2016 12:41 pm 
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These are probably GiaCoMoto cams, but cams with those markings are also sold by Old Racing Spare Parts. They gave me timing (several years ago) that seemed identical to the Montjuich cams. I did not have those figures at hand. MikeV


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 Post subject: Re: cam help
PostPosted: Mon Mar 28, 2016 1:53 pm 
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Thanks Mike...
Have you ever ridden one? Do the cams make any mid-range power?


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 Post subject: Re: cam help
PostPosted: Wed Apr 27, 2016 4:01 am 
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Hello all,

I have a friend here who would like to know if the Giocamoto GM 7 cams are copies of the NCR 7 cams .

He asked me to seek the wisdom of forum members here, which is why I'm posting this.




Peux tu te renseigner, sur le forum TTF1, à savoir si les arbres a cames Giocamoto (GM 7) sont des copies exactes des NCR 7 , et si ils ont le meme timing ?

XAVIER


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 Post subject: Re: cam help
PostPosted: Sat Apr 30, 2016 2:20 pm 
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Do I take it that no-one has heard of Giocamoto GM 7 cams ?


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 Post subject: Re: cam help
PostPosted: Sat Apr 30, 2016 3:34 pm 
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I've got these giocamoto cams. Couldn't find any info on them either. I now have everything I need to check the timing this weekend.


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 Post subject: Re: cam help
PostPosted: Sat Apr 30, 2016 3:51 pm 
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The trouble is that I think it is hard to speak with certainty about any vintage race part Dick; and, who wants to face the shame of being wrong? Having said that, if you look at the lobes on NCR7s, Montjuich, and GM race cams they all LOOK the same---obvious longer duration and higher lift than the standard 600-750 cams. If you try to measure just using calipers and math (I do not have a "cam doctor" to measure) they seem to be the same. And once installed they all act about the same regarding measured lift, duration, and necessary valve-to-valve clearance at rest (6mm will get .050 to .060"). So here is another set of GM F1 "7" cams installed. MikeV

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Flattop: I see you have a set of D Pantah heads: What size are your valves, and did you measure the V-to-V clearance at rest and at closest opening? Finally, what are your lobe centers? MikeV


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 Post subject: Re: cam help
PostPosted: Tue Jul 19, 2016 2:10 pm 
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Hi...
I had the degree wheel and indicator on a TL600 that's been languishing for some time. The readings weren't jiving with the figures on Brad Blacks cam page so I popped the cam block off and found this. Can anyone provide some incite as to what they are?
Regards...
Flattop900


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 Post subject: Re: cam help
PostPosted: Wed Jul 20, 2016 11:06 am 
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I believe those are stock early (Pantah 500?) cams. MikeV


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 Post subject: Re: cam help
PostPosted: Fri Jul 22, 2016 7:53 am 
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Yes early pantah cams.
also Gia-ca-moto #7 are identical to NCR-7 cams. The "P" cams (Monti)are different.
I believe these grinds correlate to NCR-7=TT2 P=TT1
-Cranky-


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