Posted by Collin on Tuesday, January 17, 2012 @ 04:30 PM:
Hello,
I have been rebuilding Bob's Rectimo 1200 #221. A lot of this has been on the site before, but some of the pictures may helpful the new comers.
Note: When torquing the 40hp rod. The rod bolt is a loose fit. Push the rod and rod cap to the side while torquing and check to see if lined up. if not redo.
Upgrading to a 26mm oil pump. It is recommended to open the case oil return to 9mm-10mm
Rimco Machine lined bored the case and dowel pinned the center mains
33mm 1300 intake valve will work in the 40hp head. (31mm is the std size) (20 degree back cut)
To restore original spring pressure a .030" (.75mm) shim was need for the exhaust springs. The black oil seal to help lube the exhaust stem & guide
The chambers had to be machined to get 44cc to keep the compression down to 8-1.
Rocker arm shim
Using a long drill or rod to help inline up the engine mounts.
Posted by jb92563 on Wednesday, February 29, 2012 @ 11:20 AM:
Thanks Collin for posting the pics, its always good to see how everything works and fits together.
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Posted by Collin on Thursday, April 12, 2012 @ 12:07 PM:
Posted by Jorgen on Thursday, April 12, 2012 @ 05:30 PM:
Really neat, Collin, thanks for posting.
Is that a Slickmag or am I just mistaken cause of the golden colour?
Don't forget the "forgetplates"(lower intercylinder baffles)...
May the 4's be with you/ Jörgen
Posted by Collin on Thursday, April 12, 2012 @ 07:46 PM:
Hi Jörgen,
It does have 1500 lower baffles installed. I will take some pictures.
Collin
Posted by Collin on Friday, April 13, 2012 @ 11:58 AM:
These are 1500 and early 1600 baffles. The 40hp had a similar baffle but hard to find.
Posted by Bob Brock on Sunday, April 15, 2012 @ 10:32 PM:
Greetings: As you can see, Collin has my engine ready for me and my other "engine" friend to install. Now the finished engine and fuselage are in the shop (Dave's place) where we did the fuselage fiberglass. I know many RF-4 owners like to do everything themselves, but I also know I do not have the expertise to do some of the things that require super skills and lots of talent, like the engine or painting, so I am very thankful for all the assistance forum members like Collin, Eugenio, Dann Parks and many others have provided. Frankly I use every post on the forum and ask, "What can I use or modify for my aircraft?... How can I take advantage of what others have learned?" I feel like we have turned on to final and before long the dismembered elements will be back together better than new ready to fly. More coming. Cheers,
Posted by Markku on Monday, April 16, 2012 @ 09:25 AM:
Hi Bob
Engine looks also great, can't wait to see the plane ready to fly
