• J3-Cub.com is the largest community of J3-Cub pilots, owners and enthusiasts. With over 1000 active members, we have fostered a vibrant community and extensive knowledge base. J3-Cub.com hosts a library of over 13 years of technical discussions, J3 data, tutorials, plane builds, guides, technical manuals and more. J3-Cub.com also hosts an extensive library of J3-Cub photos.

    Access to the J3-Cub.com community is by subscription only. Membership is only $19.99/year or $3.99/month to gain access to this community and extensive unmatched library of knowledge.

    Click Here to Become a Subscribing Member

O-200/ C-90 For sale

acroeric

Member
Joined
Apr 1, 2008
Messages
14
Reaction score
0
I have bitten the bullet and decided to use an IO-320 on my Clip Wing Tcraft. I have a really nice Continental O-200/ C90 that I will not be using. It is unassembled- I have 2 cases so you can build either a C90-12 or an O-200. I'd recommend the O-200 because of the extra through bolts. Only one case goes with the sale- your choice. Here is the listing of parts I have and the condition. It is a complete engine except No accessories are included.

Yellow tagged Case, New Bolt Kit, New Overhaul Gasket Kit, New bearing kit, 4 New Superior Cylinder Assemblies- steel with standard pistons, 4 new C-85 moly coated pistons- modified for use in an O-200 for 8.5 to 1 compression, yellow tagged (by Lycon and Aircraft Specialities)crankshaft (-.010), rods, gears, lifters, oil pump etc. New Accessory case from Continental. New 530788 cam- this is the one with 35 degrees overlap that many call the "seaplane cam" because it has so much more torque than the regular cam. The intake spider has been "worked" by Don at Don's Dream Machines. Everything has been painted by a professional engine shop. It is ready to assemble.

I'm sure I'm leaving something out- everything is yellow tagged or new. I was building an experiental engine to produce 110-115 reliable hp. This engine would be perfect for a clipwing cub or wag aero kit etc. I do not even want to think of how much I have invested in this engine- it is way more than my $8000 asking price. PM me or e-mail if you are interested.
 

JimC

Well-Known Member
Supporting Member
Joined
Feb 26, 2007
Messages
13,419
Reaction score
1,786
From memory, the 85 pistons on an O-200 crank give 8.7:1 compression. The top circumference of the pistons have to be specially chamfered to clear the heads. As an aside, 9.5:1 pistons give slightly less than 110 hp, and will run on 93 octane car gas.
JimC
 

acroeric

Member
Joined
Apr 1, 2008
Messages
14
Reaction score
0
I have heard 8.5 and now 8.7 to 1 for CR. I tried to figure it out using a simple formula nd came up with 8.513 but I could be off- my formula is definately questionable. I did have the pistons chamfered 1/4" and I also have a set of C85 rods- they are a bit stronger than the O-200 rods per Don (Don's dream machines)

The pistons were moly coated on the skirts and plasma coated on the domes by a local race shop. I also have the stock pistons and ring set that go with it.

 

JimC

Well-Known Member
Supporting Member
Joined
Feb 26, 2007
Messages
13,419
Reaction score
1,786
It should make a nice, strong running engine.
JimC
 

JimC

Well-Known Member
Supporting Member
Joined
Feb 26, 2007
Messages
13,419
Reaction score
1,786
P.S.
Compared to a stock 7.0:1 O-200 at rated rpm,
If 8.5, it should give 106.3 hp
If 8.686, it should give 107 hp

JimC
 

acroeric

Member
Joined
Apr 1, 2008
Messages
14
Reaction score
0
I wanted to get a bit more but not jeapordize reliability. I also have the 530788 cam and modified intake spider. That cam has a bit more overlap (C90 seaplane cam). I was thinking with all these mods I'd get around 110-115 with a free flowing exhaust.
 
Top