My Bad Luck Just Keeps Coming Back! - Road Glide Forums
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post #1 of 24 (permalink) Old 07-13-2014, 12:17 PM Thread Starter
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My Bad Luck Just Keeps Coming Back!

I rebuilt the top end on the bike this spring and in the process I repaired 3 pulled cylinder studs on the pushrod side of the engine.
I been noticing that the bike was running a bit odd on my way back from San Diego so I started to check thing out and low and behold I have another pulled cylinder stud on the front cylinder. The pulled cylinder stud is the stud to the rear of the spark plug.
I never had any problems with the bike until I had that asshole builder put in the stage IV build in the bike in the spring of 2013.
When I repaired the pulled cylinder studs and did the new top end this spring I paid special attention to the cylinder head torque proceedure and specs and after torquing the heads to specs I let the bike sit overnight and rechecked the head bolts the next morning, all the head bolts held and maintained the torque.
The only thing that hasn't had any R&R on the bike is the lower end and I am wondering if there is a problem with the crankshaft which would result in pulled cylinder studs.
The only reason I didn't repair/replace all the cylinder studs was because the supplier of the custom cylinder studs (3/16x16 TPI top of stud, 7/16x14 TPI bottom of stud) only had 4 studs available so I only repaired the pulled studs but I did check the studs that I didn't repair without pulling them out of the lower case and they did seem good.
I am going to tear down the top end again and replace all the cylinder studs this time (I found another source for the custom cylinder studs) and I am debating on pulling the engine out and sending the lower end out and having the crankshaft inspected and the crankpin welded and have the Timken bearing upgrade done at the same time.
If I just repair the cylinder studs the bike will only be down for a few days after I get all the parts, if I send out the lower end the bike will be down for 4 to 6 weeks.


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post #2 of 24 (permalink) Old 07-13-2014, 12:45 PM
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I would suggest doing it all at one time and doing right once.
Thanks FD
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post #3 of 24 (permalink) Old 07-13-2014, 01:05 PM
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Since you like a lot of ponies. Now might be the time to put a crate S&S 124 in.

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post #4 of 24 (permalink) Old 07-13-2014, 01:28 PM
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Iornmark, I have followed this post off and on for over a year, I feel your pain. Really! I think I would go this route.

http://starracing.com/SS124Engine07-up.php


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post #5 of 24 (permalink) Old 07-13-2014, 07:45 PM
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My friend had similar issue with a 106"engine he put in his 09' RG. The builder screwed up and studs started pulling. Fix after fix didn't do it. He eventually put an SE 120" in a no more issues.
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post #6 of 24 (permalink) Old 07-13-2014, 08:26 PM
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Gosh....... you've had enough problems with that bike, I know if it were me, that bike would've been gone awhile ago. I hope you finally get things straight. If you were here in Florida, I have an engine I could give you a great price on.

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post #7 of 24 (permalink) Old 07-13-2014, 08:48 PM
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Good luck. Your frustration level has to be thru the roof. I've been there myself. I kept after it and finally my issue was over.

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post #8 of 24 (permalink) Old 07-13-2014, 09:20 PM
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I'm a fan of having the crank welded and Timken bearing installed if your adding a fair amount of HP & TQ. I'm sure it will be cheaper to have the bottom end worked, and have the studs fixed than adding a 124".

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post #9 of 24 (permalink) Old 07-14-2014, 05:04 AM
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If it wasn't for bad luck, you'd have no luck.
Gotta' give you an A for the effort you've put in that!
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post #10 of 24 (permalink) Old 07-14-2014, 11:28 AM Thread Starter
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I am not a real big fan of big HP but I like good low end and midrange torque.
With the stage IV build I only got 106 HP and 106 torque according to the last dyno run.
With the 103BB in the bike with the SE 255 cams I got 90 HP and 107 torque according to the dyno.
I never had the last build dynoed so I don't know what the bike was doing but if I just guessed at it I would say it would be just about the same as the 103BB with the SE255 cams because the only difference between the 1st and 3rd build was I used the Woods TW 222 cams.
The thing is the bike never produced anything over 110 ft lbs of torque which isn't a big build by any means so why are the cylinder studs pulling? There has to be a reason the cylinder studs are pulling.
There are plenty of big build bikes that put out big HP and torque numbers that have no problem with the cylinder studs.
That is why I am looking at the crank being the issue because it doesn't make any sense why 2 different top end builds would pull the cylinder studs.


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