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Author Topic: Old Wiseco's  (Read 2759 times)

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Offline Big Jay

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Re: Old Wiseco's
« Reply #25 on: June 17, 2014, 02:45:13 pm »
Waiting to see a photo of this piston
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Offline jweeks

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Re: Old Wiseco's
« Reply #26 on: June 17, 2014, 06:31:45 pm »
Jay,
     I'm sorry but the motor has gone together. I tried to take a photo when I was putting on the block but the camera battery died while I was focusing. The next night the cylinder head was on it. I'm running the DP295 cam with a little advance. With stock valve lash for this cam it spins over by hand with no binds, noises, or issues. Since this effort is to race the bike on Saturday this week at Virginia Motorsports Park at the Cup event, I can't go slow building it. I took Sam's advise that the wider valve pocket was for the exhaust valves in their two locations in the motor. All the pistons are exactly the same. Bill Benton has taken a picture of the piston that I'm using in a group piston shot that he's used on the forum a while ago. Bill may be able find the picture and post it here. Sorry, but that's the best that I can do under the circumstances. I appreciate everyone's input. Saturday's time slips hopefully will tell if my educated guess was right.

                                                                          Jon Weeks
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Offline SBR-CB400F

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Re: Old Wiseco's
« Reply #27 on: June 24, 2014, 03:36:53 am »
Hi Jon,
Could we get a race report?  :)
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1975 cb400f, 14.435 @ 89.01MPH at Willowbank Street Series 28 March 2015
1976 cb400f Nostalgia Drag Bike.
1.871 @ the 60'
8.632 @ 78.44 mph over the 1/8.
13.822 @ 91.91 mph over the 1/4
1977 cb750f2 Resto Project
1973 cb750k4 Chopper project
1971 cb750k1 Restoration Project
1975 cb750f1 Drag bike
1.549 @ 60'
4.425 @ 330'
6.895 @ 98.05MPH  1/8 mile
10.993 @ 116.76MPH  1/4 mile

Offline jweeks

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Re: Old Wiseco's
« Reply #28 on: June 24, 2014, 04:21:51 am »
Bike got together minus it's exhaust on Thursday night. It spins over on the starter just fine. I brought the header and clamps with me to attach at the track. I didn't try to fire up the motor Thursday night since I hadn't purchased gas. (I didn't think that I'd get that far). Got up and driving at 6:20 am on Friday morning. Arrived at the hotel at 9:30 pm in Richmond, VA. About 20 minutes later I found out that Sam had crashed on his first time trial while I was driving down there. Other topics on this forum cover the injuries, the life flight, and the extended stay at a local hospital that Sam is going through. Racing became unimportant this weekend. I didn't touch my bike while down there. I left Monday at 6:10 am and arrived home at 10:20 pm. The drive was "challenging" both ways. Here's the only picture of the pistons that I have:
 
                                                                                   Jon W.
Head gasket has nothing to do with the pistons I'm using.
« Last Edit: June 24, 2014, 04:23:25 am by jweeks »
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