DonR Posted June 9, 2017 Share Posted June 9, 2017 Hi guys, new member from Sydney Australia here. I was wondering if anyone knows or has literature on what the included valve angle is on these machines? I have a vague memory that it is 38 degrees but can't confirm it. Link to comment Share on other sites More sharing options...
Member Contributer Forbes Posted June 9, 2017 Member Contributer Share Posted June 9, 2017 Hi Don, I'm on the Gold Coast...have I Clymer manual packed away(just moved), if no-one else comments before I'll dig it out tomorrow evening and have a look!Craig.Sent from my HTC_PN071 using Tapatalk Link to comment Share on other sites More sharing options...
DonR Posted June 9, 2017 Author Share Posted June 9, 2017 Thanks Craig. I can't see it in the factory manual so hopefully the Clymer might. Link to comment Share on other sites More sharing options...
Member Contributer Forbes Posted June 11, 2017 Member Contributer Share Posted June 11, 2017 Ok, so can't see anything in the Clymer either, they only reference marks etc.When I get to it I'm going to get my cams and rockers welded and ground. I have spoken to someone at Tighe Cams up in Yatala on the coast here, they are prepared to work on the quad cams and did extensive R&D with HRC when they were racing these bikes. About $1100.00 - $1200.00 all up. They have different profiles to choose from....07 32093704Ps, reading another write up somewhere(vf750) grinding is recommended at 0.365" lift, 240deg duration, and 105deg love separation. More than this you've got valve spring issues, compression, fueling, piston clearance problems.Hope this helps?Sent from my HTC_PN071 using Tapatalk Link to comment Share on other sites More sharing options...
Member Contributer Forbes Posted June 12, 2017 Member Contributer Share Posted June 12, 2017 Hi Don. I feel a bit stupid right now.....was sitting here and just realized cams were not what you were talking about!I have Greg Pullen's book on the Honda V4 on pg47 under links to the NR, it says Honda moved away from the classic 60 deg included angle to 38deg with the combustion chamber being much flatter than the domed hemi's....Should have looked here first. So you were correct.Sent from my HTC_PN071 using Tapatalk Link to comment Share on other sites More sharing options...
DonR Posted June 12, 2017 Author Share Posted June 12, 2017 Thanks Craig. Yes, the angle of the valves in relation to the cylinder axis is what I was after. Thanks for the confirmation. Regards, Don Link to comment Share on other sites More sharing options...
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