I'm determined to make this work.

[glangfor]

Ok all, <br /> I'm trying not to overpost, but this site is a wealth of info. Here is the situtation with my Ficht 150 (98)..lucky me... <br /><br />Upper bearing seized last season causing crankshaft damage, some moderate block damage and also destroyed the flywheel and stator due to out of balance condition when motor went. <br /><br />Started rebuild last spring with 2 new pistons, all new rings, all new crank bearings and also had to send the crank off to a guy in Kansas to weld and re-turn. I also purchased a used flywheel and stator from an outfit down in Forida. <br /><br />Put everthing back together 2 weeks ago along with a new water pump. When turning the engine over, it sounded great..ie plenty of compression in the cylinders. Mixed 50 to 1 oil in fuel along with the oil injection for the motor and took out to the lake. Did some idling and putzing around just to make sure everything was good. <br /><br />Started running really rough on idle and cutting out, It is now hard to keep the motor at idle. It does however run great when I get my Javilin up on plane. Now when I engage the starter. it has a really funny sound like loss of compression, so just out of curiousity, I did a cold compression check yesterday. there is a 20 pound difference from the top to lower cylinders. I know I need to run a warm-up before the check, but I never thought there would be that much differece even when cold. <br /><br />Here is my questions...<br />Do I need the diagnostic software to check timing and such due to stator and flywheel change?<br /><br />Will running a double oil mix dramatically affect idle on this motor. <br /><br />Does this sound like a tear-down and see whats going on situation....??<br /><br />Sorry for the long post..<br /><br />Gerald

 

[R.Johnson]

Re: I'm determined to make this work.

As on the other post, are we talking about the center main bearing, as you stated this bearing was split. If the bearing spun the outer, or split race, it probably took the alignment pin with it. It would have to had done this. As I stated before, it could be pumping between cylinders #2 & #3

 

[glangfor]

Re: I'm determined to make this work.

Thanks for the reply. I know that the crankshaft has 4 bearings. The first three are split sleeve bearings and then there is the lower bearing that is pressed on. The bearing in question is the top split sleeve bearing. I did in fact loose the pin...or rounded off the pine when the bearing seized. Can this pin be replaced? If so, I'll post around and see if there is a product to help seal this bearing. Can I apply more torque to this area to try and elminate the problem?<br /><br />Thanks<br /><br />Gerald

 

[JB]

Re: I'm determined to make this work.

Yes, Raptor.<br /><br />You have overposted. You have one problem and it is posted. If you want to add to it or respond to advice, reply to that post.