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General Category => Yamaha FJ1100 / FJ1200 Running Problems => Topic started by: theLeopard on January 03, 2015, 01:44:21 PM

Title: knock knock
Post by: theLeopard on January 03, 2015, 01:44:21 PM
I quartermiled a Mazerati. Lost on the freeway cause i havent jetted yet.

That was awhile ago, but i have a serious knock in my motor.
loud

Halp  :empathy: I'm worried.
Title: Re: knock knock
Post by: Mark Olson on January 03, 2015, 03:28:58 PM
You killed it, start looking for a replacement engine. :empathy3:

You can have it rebuilt as well , but if it is knocking that is probably a damaged rod.

Gotta tear it all apart and find out what happened.

For you with your skill set , I would recommend finding a used engine of the same year or buy that 92 for sale on the list.

You can ask the SoCal guys to have a listen .. be nice or they will bite. (probably a Monkey  bite) :rofl2:
Title: Re: knock knock
Post by: theLeopard on January 03, 2015, 06:30:35 PM
How much is an engine?

I would love to tear the old one apart and rebuild it.  :biggrin:
Title: Re: knock knock
Post by: Pat Conlon on January 03, 2015, 06:35:29 PM
How much is an engine? How much is a bag of groceries? Depends on what's inside.

*Perhaps* you can just get away with fresh rods....but a tear down is necessary to see what's up.

In any case, don't run the engine or things will come apart and you will ventilate the case....like Skymaster Mike.
Title: Re: knock knock
Post by: movenon on January 03, 2015, 08:04:41 PM
Here is a story to read . http://www.pashnit.com/fj1200.htm (http://www.pashnit.com/fj1200.htm)  scroll down about half way.
George
Title: Re: knock knock
Post by: theLeopard on January 03, 2015, 08:11:33 PM
Whoa!

It aint that bad! Dear Jesus thats a tragedy!  :morning2:
Title: Re: knock knock
Post by: movenon on January 03, 2015, 09:02:51 PM
"It is What It Is Until It Ain't Anymore"
George
Title: Re: knock knock
Post by: aviationfred on January 05, 2015, 09:59:41 AM
I have had a similar experience with a previous owned bike. Ended up being a bad rod bearing. I had the engine repaired at a cost of $1500.00. This was back in 1990, so I can imagine the cost will have risen.

As preveously mentioned, you have 2 choices.

1. Remove the engine from the bike, contact a freight shipping company and send it the RPM for a rebuild. Expect a price tag to start at $1500.00 and depending on internal damage, upwards of $2500.00.

2. Buy another FJ in the $1800.00-$2500.00 range and you have a spare bike to use for spare parts and you can get the bad engine repaired at your leisure.


Fred