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  #16  
Old 03-22-2007, 08:18 AM
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mplafleur mplafleur is offline
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The E-Shaft is by far the most expensive part on that motor.

The previous owner hadn't had any problems with the two other 20Bs he had bought from his source earlier. But I hadn't realized that you were so far out from using it yet.

I'd remove all the exterior parts right down to a short block. Oil it up and pickle it. Sell off the parts you don't need. That engine has so few miles on it it's practically new. You could at some point tear it down and put in new apex seals. It's not hard. Far easier than building an airplane. Get the indestructible seals that don't break. I don't know if a 20b needs porting. I don't have enough info on stock porting of the 20b. I'll have my son check with his other RX-7 buddies.
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  #17  
Old 03-23-2007, 12:21 AM
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well after a couple hours work this is what the 20b looks like now. I need to get the BIG NUT off the shaft so I can take the block apart. Any advice?

I made these pics smaller I hope they are easier to look at
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  #18  
Old 03-23-2007, 09:57 AM
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2 1/8" 3/4 in drive socket, breaker bar, 6 foot pipe - have the first two items for loan - stop by and pick em up - you have to supply the pipe
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  #19  
Old 03-23-2007, 11:50 AM
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David Clifford David Clifford is offline
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Quote:
Originally Posted by Erick View Post
well after a couple hours work this is what the 20b looks like now. I need to get the BIG NUT off the shaft so I can take the block apart. Any advice?

I made these pics smaller I hope they are easier to look at
Eric,
Been there and done that. Beg, borrow, or steal a good (high torque) impact wrench. Mine is a 1/2" drive but I used a 1/2"-3/4" adapter to fit the socket. I bent heavy angle iron I tried using as a brace to manually try and get the e-shaft front and rear nut and bolt off. The impact took it off effortlessly. I found that on my dissassembly, the front bolt was harder to get off than the big rear nut. You will be pleased at the simplicity of the rotary as you disassemble it! Dave
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  #20  
Old 03-23-2007, 03:11 PM
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Quote:
Originally Posted by David Clifford View Post
Eric,
Been there and done that. Beg, borrow, or steal a good (high torque) impact wrench. Mine is a 1/2" drive but I used a 1/2"-3/4" adapter to fit the socket. I bent heavy angle iron I tried using as a brace to manually try and get the e-shaft front and rear nut and bolt off. The impact took it off effortlessly. I found that on my dissassembly, the front bolt was harder to get off than the big rear nut. You will be pleased at the simplicity of the rotary as you disassemble it! Dave
old high output impackt worked for me(1/2-3\4 for bolt) same as david
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  #21  
Old 03-23-2007, 09:47 PM
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Yea. From what I've heard - forget the breaker bar, or even a cheap impact wrench. The onlt easy way is a high quality impact wrench.
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  #22  
Old 03-24-2007, 12:40 AM
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Okay so I need to find a high torque impact wrench or find someone else to rebuild it.
I just got done with my first large layup, the fuselage sides. It was so much fun I almost put the engine and everything else up for sale… I took me at least 4 hours. Guess I had better get used to it
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  #23  
Old 03-25-2007, 04:17 PM
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Clutch Cargo Clutch Cargo is offline
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Default impact of the impact wrench...

cheap impact < 400 ft lb of torque. 500 is nice. Make sure air pressure is > 105 PSI or even the 'spensive wrenches will putz out on you.
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  #24  
Old 03-25-2007, 09:10 PM
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1286 1286 is offline
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Default Impact Wrench

Erick,

When taking off the front bolt, be sure to remove the locking plate inside the pulley! I didn't and found it just as hard to remove as the Big Nut! It took about 4 minutes of running the impact wrench to loosen the nut. When it broke loose, it came off in 1 second.

Bob
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  #25  
Old 04-30-2007, 10:22 PM
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thought I would put up some photos of recent progress. Not really sure if people like to see build photos on here??? I don't really want to make my own web page due to the time it would take to work on...

my fuse is 6 inches wider
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  #26  
Old 04-30-2007, 10:52 PM
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Quote:
Originally Posted by Erick View Post
thought I would put up some photos of recent progress. Not really sure if people like to see build photos on here??? I don't really want to make my own web page due to the time it would take to work on...

my fuse is 6 inches wider
that is looking sweet !
shop photos are better then @#!*-#@*!** oops i cant say that here
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  #27  
Old 04-30-2007, 10:59 PM
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Looks great, Erick!

I agree with Steve. The more photos the better. It helps those who are building, and inspires those who want to.
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  #28  
Old 04-30-2007, 11:09 PM
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if i had known i would have added the foot behind the seat to add wight to the nose to off set the bigger engine that you wont sell me
i had looked in to cutting it after the streak's were covered
but it would be faster to start over.
if i was only at chapter 5.......woohoo chain saw
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  #29  
Old 05-01-2007, 10:24 AM
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We all love to See progress

Great stuff - keep em comin
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  #30  
Old 05-01-2007, 02:00 PM
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Quote:
Originally Posted by Steve parkins View Post
if i had known i would have added the foot behind the seat to add wight to the nose to off set the bigger engine that you wont sell me
i had looked in to cutting it after the streak's were covered
but it would be faster to start over.
if i was only at chapter 5.......woohoo chain saw
I thought about adding length to the fuselage but decided that was getting into an area I didn't dare mess with... I will just have to offset the weight with some items up front.
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