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Offset keys .. cam pulley's
Posted: Thu May 02, 2013 4:54 am
by Mc tool
Anybody got a hot tip as to who could supply me some offset keys . I have struck out locally ( no bastard could be bothered even returning my e-mails ) and uncle Ian ( Gowanloch ) hasn't replied either . Im pickin that someone either in Aus or the US will know someone .
Thanks
Hamish
Re: Offset keys .. cam pulley's
Posted: Thu May 02, 2013 8:35 am
by Duc906
Hamish
I got mine from Brad Black in Melbourne. I took them out when I got a set of adjustable pulleys, still have them in a box somewhere. From memory one was 5 deg and the other 6 deg. I don't need them any more.
What size are you after?
Re: Offset keys .. cam pulley's
Posted: Thu May 02, 2013 10:19 pm
by Mc tool
I need 4 and 8 deg as my lobe centers are at 111 deg and 114 deg . The thinking being that I can fit both and get 106/107 deg lobe centers , or just fit the 4 deg one and have 110/111 deg lobe centers. One thing bugs me is that I get 270 deg duration on the vert cyl and 272 on the horiz cyl. I have done the measurements several times and checked the method heaps ( zero lash , correct TDC , duration at 40 thou valve lift)..... beats me
I would rather have adjustable pulleys but they aint as easy to find as you'd think . Epicycle will modify my own pulleys if I send em over the ditch , not sure I can be bothered with that tho.
Hamish
Re: Offset keys .. cam pulley's
Posted: Fri May 03, 2013 2:54 am
by Mc tool
Duc906 wrote:Hamish
I got mine from Brad Black in Melbourne. I took them out when I got a set of adjustable pulleys, still have them in a box somewhere. From memory one was 5 deg and the other 6 deg. I don't need them any more.
What size are you after?
Cheers Ken , They are on there way
Re: Offset keys .. cam pulley's
Posted: Fri May 03, 2013 5:50 am
by Andrew2
Hey Hamish,
how about a pictorial on what you're doing.I don't know shit about timing so I might learn something.
Cheers
Andrew
Re: Offset keys .. cam pulley's
Posted: Fri May 03, 2013 6:06 am
by Mc tool
Yeah , Ok ( always fancied myself as a movie star ) , when these keys get here I will sort it out on camera
( Warning , contents may contain low level violence and offensive language )
Re: Offset keys .. cam pulley's
Posted: Fri May 03, 2013 9:42 am
by Duc906
Mc tool wrote:Duc906 wrote:Hamish
I got mine from Brad Black in Melbourne. I took them out when I got a set of adjustable pulleys, still have them in a box somewhere. From memory one was 5 deg and the other 6 deg. I don't need them any more.
What size are you after?
Cheers Ken , They are on there way
No probs, good to hear that Brad could help you out.
As for the difference in duration, you have come up with the same duration specs that I measured on my bike. I measured mine at least 10 times when I was playing around with the cams but I still came up with the same durations?
Maybe Mr Black might chime in here and have an explaination for it.
Good luck with you're new career change as a movie star, break a leg.
Re: Offset keys .. cam pulley's
Posted: Sun May 05, 2013 10:45 pm
by Mc tool