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Mag side burn down


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#1 KurtM

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Posted 28 February 2017 - 08:17 AM

After avoiding my sled for a week after returning from a trip where a cylinder dropped out, I decided to put a compression gauge on the cylinders. PTO side was 132 ish, but mag side was 0 psi.
I had been telling myself that the cylinder dropped bc of a broken spark plug wire, but that ain't the case. What's weird is that the cylinder that burned down 8 days ago, dropped on me while riding over MLK Jr weekend. I lost a cylinder after a gas up. Pretty sure the damage was done on a long part throttle ride trying to make it the last 20 miles to gas after dumping my jerry cannin the tank when I ran out. Guessing I'm gona find the locator pin beat to hell or missing and I can hear metal in the lower end. Not sure what I'm gona do or when TBH. Prob gona do a reman crank and piston kit from MCB, but thinking about all the other stuff I'd want to do with motor out makes it seem overwhelming $ wise and time wise.
Kurt

#2 Dropsix

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Posted 28 February 2017 - 04:29 PM

sorry for your luck! 

 

At least you didn't buy one with a bent nun and with a mag side leak at the bearing. I did maybe 20 kms since buying it haha. Now I've taken it apart and am just waiting for a nun.

 

 

Still won't get to ride it anymore this season.



#3 DOO_TINT

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Posted 01 March 2017 - 05:27 AM

Well at least take it apart and some pics?
If somethings not broke,i will fix that!

#4 KurtM

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Posted 01 March 2017 - 06:35 AM

Will do eventually. Up to my ears with work right now and. I'm not excited to get to it yet :(

My nun is straight(3rd one this sled has worn), but one shock is off center bc of my front plate being tweaked. I will prob replace that while the motor is out. I know that the engine mounts need replacing and maybe even an upgrade to 440 mounts. I also wanted to do jackshaft bearings and recharge shocks. This will be a multiple month retool for me bc of time and $.
Kurt

Edited by KurtM, 01 March 2017 - 06:36 AM.


#5 DOO_TINT

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Posted 01 March 2017 - 08:34 AM

I have been busy also with warmer temps,,but did you ever rebuild that engine or have been running it after buying a used sled?
If somethings not broke,i will fix that!

#6 KurtM

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Posted 01 March 2017 - 11:05 AM

It's was rebuilt at 5200 miles a few years after I got her. Ring pin locator failure. New pistons, cleaned up head, checked and repackage crank bearings. I had a local Indy doo mechanic do it then ......think it was about $700 total. This one I want to do, but think I've got some reading to do on lean midrange fixes for 500ss. We will see what's inside I guess
Kurt

Edited by KurtM, 01 March 2017 - 11:06 AM.


#7 mbret2004

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Posted 01 March 2017 - 12:46 PM

sorry for your luck! 
 
At least you didn't buy one with a bent nun and with a mag side leak at the bearing. I did maybe 20 kms since buying it haha. Now I've taken it apart and am just waiting for a nun.
 
 
Still won't get to ride it anymore this season.


Did you order the 440 nun? it's a little more stout.
USAF, Ret, E-8
1979-2004

#8 FireBlazer27

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Posted 01 March 2017 - 02:29 PM

Did you order the 440 nun? it's a little more stout.

Would the 440 nun fit on an 04/05 gsx 600 sdi? Or would I be better off using a brace kit instead?



#9 KurtM

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Posted 01 March 2017 - 03:10 PM

440 nun fits. Brace kit for tunnel is key. I made a nun brace similar to one maize used also.
Kurt

#10 KurtM

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Posted 12 March 2017 - 10:02 AM

Been looking at used motors a bit. Leaning towards a crank up kit from MCB, but what would you think of a low mileage (2500) used motor? Compression numbers are supposedly both 135 psi. Id prob repack outer bearings while motor is out. Maybe even do rings and pistons? The motor is advertiised at $1200. What's my motor worth in trade? I can get a MCB kit for approx $800 w/core ....so how does that factor into making an offer that's worth it for me?
TIA for any insight
Kurt

#11 DOO_TINT

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Posted 12 March 2017 - 11:07 AM

Just give your engine for a core for a new shortblock=$1500 as long as no hole thru the case

I wouldnt want to pay almost that much for a used engine that may not pass a pressure test like my buddy did and the pistons really didnt look so good either peaking in thru the exhaust and intakes

Edited by DOO_TINT, 12 March 2017 - 11:08 AM.

If somethings not broke,i will fix that!

#12 stealth bomber

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Posted 12 March 2017 - 11:46 AM

Agreed. Used motors are such a crap shoot on stuff this age. Price out a rebuilt crank, new pistons, gaskets and machine work on the cylinders. Compare that to the cost of a short block.

#13 KurtM

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Posted 12 March 2017 - 04:40 PM

What's a good source for a short block? I figured peace of mind lies with doing the rebuild myself or a short block.
Kurt

#14 KurtM

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Posted 13 March 2017 - 10:28 AM

I got a price of $1799 for a short block including credit for exchange. At $800 for parts gaskets and the works from MCB, that's a big difference unless I'm in need of cylinders I guess. Thinking it's Gona be me sound the work.
Kurt

#15 KurtM

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Posted 13 March 2017 - 10:36 AM

MCB gave me a price for a long block with dual ring pistons of $1495. Guess I gota see how much work I get this summer before I decide a route.
Kurt




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