TQ29m (Offline)
#21
3/9/15 1:17 PM
DAD, 2-1 would be over the top, 20-25% would be plenty, problem is, not any/much room to make it happen, the best fix would be a R&P change, say maybe a 6 or 6.5-1 would get er done, I am waiting to order one, while I wait for my snow has all been sold! Bob
"Being old, isn't half as much fun, as getting there"! Ole Robert I!
TQ29m (Offline)
#23
3/9/15 2:57 PM
$300.00 to $500.00 is about what I pay for a good 600R, but I usually don't have to buy a complete motor, maybe a head, or pistons, and that's under a hundred, so it's also a cheap fix, biggest cost is the head gasket,but then over the years I've managed to learn how to fix things myself, but this engine has been really dependable, since 05, it's only been one head, and a couple of rods and pistons, and not counting last year, we haven't missed but a few races, but my driver has been awfully busy, so we run when he has time. Bob
"Being old, isn't half as much fun, as getting there"! Ole Robert I!
TQ29m (Offline)
#25
3/9/15 7:27 PM
DAD, I only use the engine it's self, I use a "modified by Bob" Hilborn injection, the same Dyna ignition that is used by Honda owners, the connection from the engine to the rear end is the same, only the adapter plate is different, and I make them in my shop, and due to my connections with manufactures, I am called upon to do some R&D, which a few years ago, cost a lot of good finishes, it was a good ignition, very simple, and could be reset trackside via a laptop, problem was it wouldn't turn over 10k, no matter what, so he flew in from Iowa to see for himself, and nothing he could do would help, so that did it in for that season, but that's the way it goes sometimes. Maybe my driver will be able to drive more this year, I'd sure like to make Brownstown in 3 wks! Bob
"Being old, isn't half as much fun, as getting there"! Ole Robert I!
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i love dirt track racing
TQ29m (Offline)
#26
3/9/15 7:48 PM
DAD, as far as the gear reduction goes, my 2nd cousin, Greg Lefler happens to be the owner of a large gear mfg co in ft Wayne, so that would be a non problem. And yes, he is Paul's son. Bob
"Being old, isn't half as much fun, as getting there"! Ole Robert I!
badcoupe (Offline)
#27
3/9/15 8:42 PM
Only problem was the rules that said direct connection to the crank. Danny warren a few years back wanted to be allowed to run a year reduction for his Kawasaki. That car was fast won every race it finished Jeremy's rookie year. Just couldn't keep cranks in it.
TQ29m (Offline)
#28
3/9/15 9:23 PM
Danny had the same problem I sidestepped, I have 2, 700cc, 5 valve Yamaha motors, but the cranks are flat on each end, and don't exit the case, I didn't want to weld on them, which is I think is what Danny did, I was tempted to bore the crank, with the same taper as the Honda, and cut the splines on the piece that would be bolted into that bore, then I came across the 600's that didn't require any work there, so I had change in plan, besides, the 700 was only a 2 yr production run, and terribly hard to find. There is more about this story, but it does no good to go further with it. For the record, Wayne Harpring and I wrote that rule! Bob
"Being old, isn't half as much fun, as getting there"! Ole Robert I!
TQ29m (Offline)
#30
3/9/15 9:53 PM
DAD, the Honda drove the clutch like modern engines, not off the end as you are saying, but instead of a gear drive, they used a pair of chains to drive the clutch. Bob
"Being old, isn't half as much fun, as getting there"! Ole Robert I!