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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Offset ET28 hole in ET25 for more valve lift
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<blockquote data-quote="greg brillus" data-source="post: 52828" data-attributes="member: 597"><p>Hi John, You will find John Trease very easy to talk to, and very helpful. I know he has built Harley engines right up to top fuel, A very clever man, so hopefully you may get some answers from him. I to am building a twin race engine, although not as highly tuned as yours, I to have bought some of Terry's MK 5 cams and radiused followers, he also supplied me with some Gold Star dual valve springs, alloy retainers and modified upper guides to suit. The issue I have is he did not supply any collets, which is a real pain. The alloy retainers will require collets that have the same ID as standard 0.310 but the OD is large and more like a collet to suit 0.372 valve size....meaning the collets are very thick walled. The beehive springs, Titanium retainers and collets you have, are they readily available, and roughly what sort of cost...? As it may be easier for me to try something along the lines of what you have......As I said earlier, I can't get valves made without supplying collets to go with them. Thanks in advance.......Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 52828, member: 597"] Hi John, You will find John Trease very easy to talk to, and very helpful. I know he has built Harley engines right up to top fuel, A very clever man, so hopefully you may get some answers from him. I to am building a twin race engine, although not as highly tuned as yours, I to have bought some of Terry's MK 5 cams and radiused followers, he also supplied me with some Gold Star dual valve springs, alloy retainers and modified upper guides to suit. The issue I have is he did not supply any collets, which is a real pain. The alloy retainers will require collets that have the same ID as standard 0.310 but the OD is large and more like a collet to suit 0.372 valve size....meaning the collets are very thick walled. The beehive springs, Titanium retainers and collets you have, are they readily available, and roughly what sort of cost...? As it may be easier for me to try something along the lines of what you have......As I said earlier, I can't get valves made without supplying collets to go with them. Thanks in advance.......Greg. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Offset ET28 hole in ET25 for more valve lift
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