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I pulled the pics from the last post because of the ad box that takes as much as 75% of the viewing space. This seems to accure on the first post of a new page. So here are the pics related to the last post.
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The case boring has been completed and it finished right on the number, giving me .0015 to .002 crush fit on the bearing blocks. Did a trial fit of the crank in the 2 parts by installing a mark 75 reed on the crank at the top and bottom locations. The 6 inline cranks all have the same size main and reed journals. Quick and easy why to try. Had to clean the mid case side cheeks of the bearing saddles. Had to remove more material on the top saddle because the top cheek of the crank is 1/8 inch thicker than the rest. Cleaned those areas by bolting down the mid case and used a long cutting tool in the bar and just move into the saddle cheeks. Stop the bar, rotated the tool up, and advanced to the next pocket. It is now on to completion the block. It has been within 2 weeks of 1 year that I started carving the block. I made a good decision by stopping the work on the block as I have discovered little things that would have been trouble.
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Time to start catching up on the posting process.. After the case boring was completed, I bolted the mid case to the block to verify center lines of the block to mid case and the positon of the cylinder centers. I had left the cylinder bores small to allow for adustment after mid case completion. The cylinders were then bored to the finished bore size of 2 7/8 to be able to view the actual finished port configuration and adjust if necessary. Now just the process of teadious mill work. The next few posts will just be pics of the porting and water jacket cutting progress. I also included a pic of the original 60 inch Quincy block standing beside the new block for a small comparison. Note that the Quincy block is also standing on the lower studs and not the block base.
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Seeing the crank assy in the case, you certainly have a "tight" case. Should really add to the velocity of air flow.
I was surprized at how much taller this engine will be than the 60-66 ci engine.
Do you have any plans for a lower transom mount?
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Quote:
Originally Posted by
R Austin
why, because I can.
:cool:
Curious to if you are using sleeves or having the bores nicasil?
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Gene
In the beginning of this thread I justified this project with the statement that the 60 inch motor was to short and did not come to the top of the fairing. That is because this boat was designed for Jone's custom tower housing. I had only seen one in 1968 at a race in Saginaw Mi. that was on a 16-17' Jones with a 6 Looper. Pic attached. One popped up on E-Bay one day with a buy it now price. I new what it was when I saw it and snagged it. I have attached some pics of the housing and the boat and you can see for yourself that this job has to be done because the motor is to short. The housing has a single pinion speedmaster on it When it blows I will put on a twin pinion.
And for the question about cylinders they will be steel sleeved.Attachment 52066Attachment 52061Attachment 52062Attachment 52063Attachment 52064Attachment 52065
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Awesome! Can't wait to see it run.......
Tim
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Dick,
Do you remember who the boat with the high fairing belonged to. Also the picture didn't come through real clear on my computer. Is that Tim Chance eye balling it? If so, I guess we all were younger back then!
As always, best of luck with this project.
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Gene
I had forwarded a copy of that pic to Paul asking who might have had a 6 looper from the Chicago area built for them, In 68 there had not been many made. It seems like his family had a business called Thermo something. The individual looking at the motor was his or part of his pit crew.