orangebean Posted April 9, 2011 Share Posted April 9, 2011 Hoping there's someone out there who can explain the markings on my J & P timing gear set. The crank sprocket has 2 sets of markings, one on the teeth face and one on the hub face (see pic (attached) which seem to differ (offset to each other) by 2. The cam sprocket has a single dot on the tooth face. The duplex chain has a split link in it. Whilst I can set the cam timing correctly with a dial gauge and degree disk using random slots and teeth it would be nice to understand what the markings mean and achieve at least an approximation of what the manufacturer intended! Thanks Mark Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted April 9, 2011 Share Posted April 9, 2011 Hoping there's someone out there who can explain the markings on my J & P timing gear set. The crank sprocket has 2 sets of markings, one on the teeth face and one on the hub face (see pic (attached) which seem to differ (offset to each other) by 2. The cam sprocket has a single dot on the tooth face. The duplex chain has a split link in it. Whilst I can set the cam timing correctly with a dial gauge and degree disk using random slots and teeth it would be nice to understand what the markings mean and achieve at least an approximation of what the manufacturer intended! Thanks Mark Set it 0/0 The other marks are for setting the cam advanced Nige Quote Link to comment Share on other sites More sharing options...
orangebean Posted April 10, 2011 Author Share Posted April 10, 2011 Set it 0/0 The other marks are for setting the cam advanced Nige Thanks Nige- it's which markings are actually 0/0 that are confusing me. On standard gears I'd just set TDC and point the two dots together. These ones have too many options! After months of cleaning and replacing bits to make my own version of V8 prawn I've got to the point of my own mental block over this. At least I'm past the "just eBog the whole thing as an unfinished project" though. That was last Tuesday! Quote Link to comment Share on other sites More sharing options...
orangebean Posted April 13, 2011 Author Share Posted April 13, 2011 Thanks Nige- it's which markings are actually 0/0 that are confusing me. On standard gears I'd just set TDC and point the two dots together. These ones have too many options! After months of cleaning and replacing bits to make my own version of V8 prawn I've got to the point of my own mental block over this. At least I'm past the "just eBog the whole thing as an unfinished project" though. That was last Tuesday! Update: I'm still looking for some information on how J & P intended the markings to be aligned. There must be someone out there who's fitted this camchain set to a V8 from new and can enlighten me? I've emailed J & P but no reply. Quote Link to comment Share on other sites More sharing options...
nicksmelly Posted April 13, 2011 Share Posted April 13, 2011 Try RPi. I know they supply the J & P set with some of their cam kits. Quote Link to comment Share on other sites More sharing options...
Quagmire Posted April 13, 2011 Share Posted April 13, 2011 Mr Bean- try v8forum.co.uk, they have done most things on the RV8 over there... Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted April 13, 2011 Share Posted April 13, 2011 I can help you set these up but need clearer idea of whats on what In simple terms often there is a "0" or a "Box" shapoe, this is Zero, then there is 2 4 6 etc These markings should appear on bothe large and small gears, you should have the large gear and small gear fitted so that the "0"s or "Boxes" are in line vertcially If its a pure vernier cam adjustable gearset then these are a nightmare, and have to be degreed in no easy way, which is why Mr Eales sets them then welds then up with 3 x blobs Post up some clear detailed pics Nige Quote Link to comment Share on other sites More sharing options...
orangebean Posted April 13, 2011 Author Share Posted April 13, 2011 Mr Bean- try v8forum.co.uk, they have done most things on the RV8 over there... Quag- After a REALLY sh!!ty day trying to remove 2 dowels from a timing case and failing dismally, thanks for the Mr Bean- I'd honestly never spotted/ thought about that interpretation of the nick- and I've used it in various places for ever! I'll have a dig around the V8 forum and again, thanks for cheering me up Quote Link to comment Share on other sites More sharing options...
orangebean Posted April 13, 2011 Author Share Posted April 13, 2011 I can help you set these up but need clearer idea of whats on what In simple terms often there is a "0" or a "Box" shapoe, this is Zero, then there is 2 4 6 etc These markings should appear on bothe large and small gears, you should have the large gear and small gear fitted so that the "0"s or "Boxes" are in line vertcially If its a pure vernier cam adjustable gearset then these are a nightmare, and have to be degreed in no easy way, which is why Mr Eales sets them then welds then up with 3 x blobs Post up some clear detailed pics Nige Thanks Nige- the pics were the best of a bad lot as I'm not allowed to take any digi cam into the oily fingerprinty environment that is the barn except a 10 year old kodak that even the kids won't use I'll knock up a couple of quick sketches of the J & P setup which (falling back on my 35 year ago Tech Drawing O level) will hopefully explain the layout better. I've seen your reference before to Mr Eales welded vernier setup and can understand exactly where he's coming from More to follow Mark Quote Link to comment Share on other sites More sharing options...
orangebean Posted April 14, 2011 Author Share Posted April 14, 2011 No need to exercise my drawing skills- the mystery is solved thanks to Bob at J and P who has emailed me the attached setup information. HfH, Quagmire and nicksmelly your help is much appreciated Mark CS7000-JP5984.pdf Quote Link to comment Share on other sites More sharing options...
Quagmire Posted April 14, 2011 Share Posted April 14, 2011 Quag- After a REALLY sh!!ty day trying to remove 2 dowels from a timing case and failing dismally, thanks for the Mr Bean- I'd honestly never spotted/ thought about that interpretation of the nick- and I've used it in various places for ever!I'll have a dig around the V8 forum and again, thanks for cheering me up Glad to be of assistance Quote Link to comment Share on other sites More sharing options...
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