1200 Cracked Piston. Rebuild Kit Questions.
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Stage IV
Joined: Apr 2012
Posts: 4
Likes: 0
From: DE
1200 Cracked Piston. Rebuild Kit Questions.
My friends 2004 1200 Sportster cracked a piston the other day. The bike only had 17,000 miles. We pulled the motor apart and both heads are marred badly. One piston is completely destroyed. He said he was at a stop sign and the bike just died.
My first question is could I just use a 883 to 1200 conversion kit to replace the sleeve and piston. Where is the best/cheapest place to get that and to get 2 heads?
My second question is what do we do about all the pieces of piston ring, piston, and head in the lower part of the motor?
My first question is could I just use a 883 to 1200 conversion kit to replace the sleeve and piston. Where is the best/cheapest place to get that and to get 2 heads?
My second question is what do we do about all the pieces of piston ring, piston, and head in the lower part of the motor?
Outstanding HDF Member
Joined: Jul 2010
Posts: 2,427
Likes: 2
From: Smack Dab in the Middle of Louisiana
Running to hot and Detonation.............
Cheap is not the way to go if he plans on keeping the bike. Quality is the right way to handle these types of matters.
Cheap is not the way to go if he plans on keeping the bike. Quality is the right way to handle these types of matters.
Advanced
Joined: Aug 2011
Posts: 63
Likes: 0
From: NC
www.nrhsperformance.com this is where I would start. 700 for a 1250 kit. And they make top quality parts.
Last edited by Afghanvet_2x; Apr 14, 2012 at 12:57 PM.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
Unfortunately, this repair is going to require a lot more than a top-end kit. The motor is going to have to come out of the bike and the cases split open in order to clean the debris out of the bottom-end and replace any damaged parts.
The OP may be better off looking around for a wrecked/totaled bike with a good donor motor.
The OP may be better off looking around for a wrecked/totaled bike with a good donor motor.
Seasoned HDF Member
Joined: Sep 2009
Posts: 25,292
Likes: 2,427
From: Eastern NE
You could get the jugs bored & heads milled for new pistons. Gotta tear everything out & flush the block. Might be cheaper to go w/rebuilt motor - saw a few on eBay & CraigsList. Price both options & do pro/con...good luck!
Cruiser
Joined: Mar 2012
Posts: 148
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From: Wisconsin
If the motor is in that bad of shape from Detionation then your crank and lower bearings are proably all banged up. BUT if the bike was detionating that badly the bike should of barly ran. Only other time ive seen that is from someone runing Nitrous and it goes lean on the bottle. Time for a whole new crate motor
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HDF Community Team
Joined: Dec 2011
Posts: 8,512
Likes: 3,924
From: San Diego, CA
That sounds pretty catastrophic for a simple "stop sign" death. What is the background on this bike? I'd also have those connecting rods and all bearings checked or replaced. You're going to have to split the cases to make sure all the oil galleries are free of metal debris.
Bummer.
John
Bummer.
John
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Thread Starter
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Stage IV
Joined: Apr 2012
Posts: 4
Likes: 0
From: DE
My friend never rode hard and always took care of the bike.. I was gonna tell him to call Harley and complain, but I doubt theyd do anything.
Gonna look around for a new motor.
By split the case do you mean seperate the trans from the motor?
Gonna look around for a new motor.
By split the case do you mean seperate the trans from the motor?
