Cam degree timing on R-1

RSS
Email

0 Kudo

Author	Comment
ROFracing	Cam degree timing on R-1		Lead	[-]
Registered User Posts: 14 03/06/08 20:22:45	Tags : None Hello, I have a basically stock pre 03 R-1 that I need to get the stock cams degreed to maximize power from the engine. I say basically stock because it has the racing clutch basket, oil management in the pan, the stator has been removed, and it was originally a FI head, but has been converted to run carbs. The internal pieces parts are stock. A friend suggested degreeing the cams. We set them at what we thought was the correct settings, but now the engine doesn't run without spitting back fuel from the carbs, and then only with a lot of playing with the throttle. We had been told to use 100 and 104 degrees BTDC, but I am not sure that we didn't get them reversed. Or perhaps that timing is too aggressive for the stock motor and cams. Any suggestions are appreciated. Thanks, Wayne Hayden ROF Racing
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
David Arken		#1	[url]	[-]
Registered User Posts: 599 03/07/08 00:31:41	Usually the intake is around 104 - 106 and the exhaust 100-103. Maybe you could briefly describe your cam timing procedure. David This is a great article on cams by Dema Elgin. http://www.elgincams.com/campaper.html The May 2008 issue of Circle Track magazine has a good how to article on degreeing a cam. Last Edited By: David Arken 03/07/08 12:35:03. Edited 3 times.
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
David Arken		#2	[url]	[-]
Registered User Posts: 600 03/07/08 01:39:49	This is a great article on Cams by Dema Elgin http://www.elgincams.com/campaper.html The may 2008 issue of Circle Track Magazine has a nice how to on Degreeing Cams. David
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
fokoracer	Great Article!!	#3	[url]	[-]
Registered User Posts: 158 03/07/08 19:13:57	Wow....that is a great article. I'm kinda tempted to buy his book on performance engine theory. Do you have that Dave? Fabian
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
ROFracing		#4	[url]	[-]
Registered User Posts: 15 03/07/08 19:14:55	Thanks David, That would match up with what we thought we had. I pulled the engine and took it to the bike shop this morning to have them check to make sure that they didn't get intake and exhaust mixed up. Hopefully they will be able to figure out something. Also thanks for the article, I haven't had the chance to read it yet, but have printed it out. Thanks again, Wayne
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
David Arken		#5	[url]	[-]
Registered User Posts: 602 03/07/08 19:30:54	Dema Elgin is one of the best cam guys in this country. He used to have a shop in Redwood City and was one of the first instructors in the De Anza Auto Teck program. He was also my cam sponsor back in the Sprite and Corvette days. He is semi-retired and still lives in Northern CA. Fabian, I cannot remember if I have the book, I did or have or read it a long time ago, David And another article http://www.gglotus.org/ggtech/907camdial/907dialcam.htm Last Edited By: David Arken 03/07/08 19:37:07. Edited 1 time.
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
Joshua Held	Dema Elgin	#6	[url]	[-]
Registered User Posts: 55 03/10/08 15:17:16	Fabian and David, I recall Dema was still teaching a night class on high performance engines at a local community college just a few years ago. Might be worth looking into. One of the best experiences that I have ever had through racing was hanging out at his shop. Although I spent most my time there harassing them to grind a cams for me I learned a ton about the old school hot roding roots that exist right here in our backyard. I'll never forget the first cam that he ground for me - he let me watch the entire process start to finish and Dema even let me grind one of the lobes my self! - was a truly memorable experience - after it was finished he rolled it up in heavy craft paper (not the fancy cam boxes we are all accustom too) handed it to me and sent me on my way. To this day I still believe that the very best cams are the ones that come not in fancy boxes but simple craft paper. I still have the book that he gave me years ago 'Four stroke performance engines' (or something like that) and it still has a list of several cams specs that Dema had hand written on a yellow piece of paper and tucked into the book. Good memories... Take it easy, Josh Last Edited By: Joshua Held 03/10/08 15:21:06. Edited 1 time.
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote
Flip 2.dcrmessageboard	What I did...	#7	[url]	[-]
Registered User Posts: 1 05/07/08 14:20:10	Ran an R-1 in my circle track car (a while ago). I used 108-110 intake, and 100-101 exhaust. Ran well.
Interact My Recent Posts Message Me Connection Invite Blocking Ignore User's Posts	Reply Quote