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Bent crank?

This is a discussion on Bent crank? within the Forced Induction forums, part of the Technical category; Quote: Originally Posted by sandjunkie Quote: Originally Posted by GIFF-TURBO RZR A symptom of a bent crank is the engine wants to die at idle ...


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  #16  
Old January 22nd, 2010, 08:50 PM
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Re: Bent crank?
Quote: Originally Posted by sandjunkie View Post
Quote: Originally Posted by GIFF-TURBO RZR View Post
A symptom of a bent crank is the engine wants to die at idle dose yours idle OK? you should be around 1100rpm at idle
yes idles fine
OK this is a long shot but if the bolts that hold the engine to the transmission were for some crazy reason loose it could allow the engine to move around and a little.......again this is a long shot but I thought its worth a look.......

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  #17  
Old January 22nd, 2010, 09:05 PM
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Re: Bent crank?
Quote: Originally Posted by GIFF-TURBO RZR View Post
Quote: Originally Posted by sandjunkie View Post
Quote: Originally Posted by GIFF-TURBO RZR View Post
A symptom of a bent crank is the engine wants to die at idle dose yours idle OK? you should be around 1100rpm at idle
yes idles fine
OK this is a long shot but if the bolts that hold the engine to the transmission were for some crazy reason loose it could allow the engine to move around and a little.......again this is a long shot but I thought its worth a look.......

I've checked that plus the motor mounts.I'am going to check the run out on my crank in the morning.I really don't wan't to do a rebuild this time of year,to much riding to do.
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  #18  
Old January 22nd, 2010, 09:23 PM
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Re: Bent crank?
Let me know what you find
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  #19  
Old January 22nd, 2010, 09:23 PM
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Re: Bent crank?
Gary is absolutely right, when I bent mine I can run car over 2500 RPM but under that, die quickly. Thanks good at least for that I can load RZR to trailer. It is not in your case, you still run on idle. Just wondering, if just end of the crank where primary is slip on could bent and you see wobbling, but really can't see how this will happened. IMHO
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  #20  
Old January 23rd, 2010, 12:19 AM
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Re: Bent crank?
maybe bad bearing rather than bent crank, that would cause wobble.
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  #21  
Old January 23rd, 2010, 01:48 AM
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Re: Bent crank?
Don't run the motor without the clutch untill you find out if that's ok to do.....it's not with the weber....something to do with dampning/balance.....

do a runout test while cranking..dont start it...
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  #22  
Old January 23rd, 2010, 06:00 AM
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Re: Bent crank?
Thanks guys will let you know what i find later on today.AGAIN THANKS
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  #23  
Old January 23rd, 2010, 05:51 PM
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Re: Bent crank?
Well the crank checked out OK. it was with in spec.Put it all back together gave it a couple of hard runs up&down the sandwash runs great, no grinding in any gear.

THANKS FOR ALL THE INPUT
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  #24  
Old January 23rd, 2010, 05:57 PM
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Re: Bent crank?
then id run it till it stops.....if it was alittle bit it might of been the casting of the primary off a hair....but if it goes drive it.
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  #25  
Old January 23rd, 2010, 06:05 PM
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Re: Bent crank?
Quote: Originally Posted by johnnycat8 View Post
then id run it till it stops.....if it was alittle bit it might of been the casting of the primary off a hair....but if it goes drive it.
Thats just what iam going to do.
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  #26  
Old January 23rd, 2010, 06:15 PM
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Re: Bent crank?
So what was it Bruce?

Chris
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  #27  
Old January 23rd, 2010, 06:20 PM
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Re: Bent crank?
Quote: Originally Posted by MCX-USA Turbos View Post
So what was it Bruce?

Chris
whos bruce?
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  #28  
Old January 23rd, 2010, 06:23 PM
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Re: Bent crank?
thats great news phil......musta had bad belt alighnment...
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  #29  
Old January 23rd, 2010, 06:27 PM
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Re: Bent crank?
LOL...I've been talking to one of our other customers with the same symptoms, so I thought it was him...lol.

Chris
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  #30  
Old January 23rd, 2010, 09:09 PM
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Re: Bent crank?
Quote: Originally Posted by sandjunkie View Post
Quote: Originally Posted by johnnycat8 View Post
then id run it till it stops.....if it was alittle bit it might of been the casting of the primary off a hair....but if it goes drive it.
Thats just what iam going to do.
Glad to hear it worked out good!
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