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Old 11-08-2012, 11:00 PM   #1 (permalink)
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hdparadox wants to know Dino or Syn?
help needed

have a project and need some info .figured this was the best place to figure it all out.I ahve a 90 fxrs 60+thousand miles on it motor getting tired.Have in mind to tear it down remanufacture or spend $and get big the idea of big cubes but demand it be reliable.Any thoughts?
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Old 11-08-2012, 11:08 PM   #2 (permalink)
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You're likely to only do it once, so do what you really want. I'd go with Harley's remanufacture program.
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Old 11-09-2012, 01:26 AM   #3 (permalink)
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Michael Psycle is reading this now saying WTF is this?
I wonder why the motor is getting tired after only 60,000 miles? My 92 fxr has over 100,000 and is still fine. Have you had the compression tested?
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Old 11-09-2012, 06:11 AM   #4 (permalink)
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V-STRUM wants to know Dino or Syn?
I went the remanufactured route with my motor at 108,000 miles, not so much because it was tired but I wanted to go with the black and chrome finish, since I was redoing the whole bike after a little crash. The new motor is a little more oil tight, no base gasket leaks. It did burn oil like crazy though, found out 2 valve guide seals were installed wrong. Remember if you send in a modified motor you get a stock one back, so take it out the cams and things before you send it out.

If your just looking for more power, the standard mods, as well as having heads ported and polished might be all you need.
1987 FXRS-SP
2009 Suzuki V Strom 650
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Old 11-09-2012, 10:51 AM   #5 (permalink)
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Thermodyne is still riding a stock bike Thermodyne is still riding a stock bike Thermodyne is still riding a stock bike
The MoCo rebuild program really is a deal. From what I've found out, you'll get a new lower end with your jugs and heads rebuilt. And all the bright work gets replaced. All for about $3500.
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Old 11-09-2012, 12:59 PM   #6 (permalink)
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gretsch58 wants to know Dino or Syn?
+1 what Michael said. Have a leak down test done on it. I've got almost 60k on my 93. I've only replaced the lifters and cam. It doesn't even leak any oil and the compression is good. It's a strong motor still. pulls like a freight train.

At least by having it tested, you'll know where you stand with the motor.
My Frisco style bobber build.

"Why behave in public when you're living on a play ground" DLR
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Old 11-09-2012, 03:04 PM   #7 (permalink)
Join Date: Oct 2012
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Krowbar wants to know Dino or Syn?
is $3500 really worth it? Why not go with just a rebuild kit through NRHS or something? I want a big motor swap too, but I have decided, when it's time, to just rebuild the stock 80" motor to the walls. The motor only has 25k on it though so no rush.

1985 FXRS: Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni HSR 42mm carb, S&S intake, Progressive 11.5" rear springs, progressive front sprigs, SPF Lightningheader exhaust and bars, rebuilt front forks with brace (lowered back to 25.5"), Arlen Ness fairing, all new electrical, shyt-ton of powder coating etc. etc.
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