engine binding after rebuild???
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engine binding after rebuild???
Whaddup 'Heads,
Help me out here. I have encountered a mysterious condition after a rebuild - by the way, this ain't my first rebuild:
Assembled engine (just replacing water seals and o-rings), torqued everything down and after putting the flywheel on, spun it about "6" times, then the engine kind of snugged to a halt, not "clink", but more of a wedging feel.
The only thing I did different with this engine was I torqued it down to 31/ft. lb., instead of the 29/ft. lb. max. Also, I didn't have the front pulley on and found that after I took the front cover off and leaning the engine forward the oil pump chain had bound against the counterweight.
Think this is my only problem? Overtorque, maybe (only 2 lbs.)?
Whatdya think?
Thanks in advance.
Help me out here. I have encountered a mysterious condition after a rebuild - by the way, this ain't my first rebuild:
Assembled engine (just replacing water seals and o-rings), torqued everything down and after putting the flywheel on, spun it about "6" times, then the engine kind of snugged to a halt, not "clink", but more of a wedging feel.
The only thing I did different with this engine was I torqued it down to 31/ft. lb., instead of the 29/ft. lb. max. Also, I didn't have the front pulley on and found that after I took the front cover off and leaning the engine forward the oil pump chain had bound against the counterweight.
Think this is my only problem? Overtorque, maybe (only 2 lbs.)?
Whatdya think?
Thanks in advance.
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Yes, I use 40lb for my engines, as Im uncomfortable with 23-29 the factory specifies. You wont have any problems if they were tightened in sequence and evenly.
The things that I've seen makes engines bind were
-rotor apex grooves not completely cleaned before assembly (the carbon built up under the spring left in place) which, when combined with the height of the new apex seal, and the springs, results in the seal not being able to compress fully,
-front or rear stationary gears not fully tightened down, or installed at an angle.
-lack of lubrication on the bearings during install
-improper assy of parts under the front cover (sounds like this is your issue).
The things that I've seen makes engines bind were
-rotor apex grooves not completely cleaned before assembly (the carbon built up under the spring left in place) which, when combined with the height of the new apex seal, and the springs, results in the seal not being able to compress fully,
-front or rear stationary gears not fully tightened down, or installed at an angle.
-lack of lubrication on the bearings during install
-improper assy of parts under the front cover (sounds like this is your issue).
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#8
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Originally posted by silverrotor
As for the Tension Bolts, did you spin them off with an Air Compressor? If so, It makes It likely to warp the Housings.
As for the Tension Bolts, did you spin them off with an Air Compressor? If so, It makes It likely to warp the Housings.
I do that all the time.
-Ted
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If after you pull the oil pump chain and front counter weight off .........it still binds.........bite hard on a bullet and take the thing apart. Something has fallen out of place and is digging in. That said you've probably already found out what is wrong by now. What was it? Definitly not overtorque.
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I'm thinking the stuff under the front cover might be shifting 'cause the pulley isn't in place.
I'm gonna give it a look this weekend and let you guys know. Just the strangest thing, never had this happen before .
Who knows, maybe I goofed and put one of those parts out of sequence. It can happen.
Thanks guys. I'll keep you posted.
-turb'd
I'm gonna give it a look this weekend and let you guys know. Just the strangest thing, never had this happen before .
Who knows, maybe I goofed and put one of those parts out of sequence. It can happen.
Thanks guys. I'll keep you posted.
-turb'd
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Originally posted by RETed
Huh?
I do that all the time.
-Ted
Huh?
I do that all the time.
-Ted
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Whaddup 'Heads,
UPDATE!!! THIS JUST IN...
Guess what the problem was (you'll get a kick outta this)? You know how we put towels and things in the ports to keep things from getting inside the engine? Well, I used newspaper and overlooked one of the intake ports and it got snagged and pulled into the intake port - had to fish it out.
Talk about GOOF !!!
Thanks for all the input - POWER TO THE ROTOR!!!
-turb'd
UPDATE!!! THIS JUST IN...
Guess what the problem was (you'll get a kick outta this)? You know how we put towels and things in the ports to keep things from getting inside the engine? Well, I used newspaper and overlooked one of the intake ports and it got snagged and pulled into the intake port - had to fish it out.
Talk about GOOF !!!
Thanks for all the input - POWER TO THE ROTOR!!!
-turb'd