EVO All Evo Model Discussion

1990 evo question

  #11  
Old 12-05-2010, 05:02 PM
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Originally Posted by JohnnyC
John,

Hey there! I know you've been in repair a long time but once again I get two different answers to this question ... Aack!

So Nick says



So who is right?

I will open her up if it's not the more solid bearing. But I need to know for sure.
I read the quote not your post. You are OK sorry to scare you. It's a bitch when you are in a hurry and misread something!!
 
  #12  
Old 12-05-2010, 09:20 PM
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The only other thing might be the lifters. I think Harley said they should be replaced on the older EVO's at 25,000 or so. The newer "B" lifters are said to be better.
 
  #13  
Old 12-06-2010, 02:42 AM
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Thanks guys....love that manual info.
The bearing "year deal" is what I couldn't remember.
JohnnyC, you're not hi-jac'ing, good info.
Nice bike's BTW, dresser to chopper and in-betweens....evos look good in anything!

Nick, Where does a guy get that 101 HD perf evo book? Looks like a good book to have!
 

Last edited by Holster Maker; 12-06-2010 at 02:54 AM.
  #14  
Old 12-06-2010, 04:43 AM
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Originally Posted by Holster Maker
Nick, Where does a guy get that 101 HD perf evo book? Looks like a good book to have!
Got mine from Amazon.
 
  #15  
Old 12-06-2010, 04:50 AM
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Something not mentioned, this bike has the old design pulley/nut/spacer/lock setup.

In `94 the factory came out with an updated setup which consisted of a new pulley (thicker at the spline area) a shorter spacer, and a lockplate, to keep the nut from coming loose.

Although not a perfect solution, the new setup is much better than the old one, which used a single bolt threaded into the pulley in the hope that if the nut backed off it would stop when it contacted the head of the bolt (it did not work, the nut would just shear off the head of the bolt and continue to loosen).
 

Last edited by Dan89FLSTC; 12-06-2010 at 04:54 AM.
  #16  
Old 12-06-2010, 04:57 AM
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Originally Posted by Dan89FLSTC
Something not mentioned, this bike has the old design pulley/nut/spacer/lock setup.

In `94 the factory came out with an updated setup which consisted of a new pulley (thicker at the spline area) a shorter spacer, and a lockplate, to keep the nut from coming loose.

Although not a perfect solution, the new setup is much better than the old one, which used a single bolt threaded into the pulley in the hope that if the nut backed off it would stop when it contacted the head of the bolt (it did not work, the nut would just shear off the head of the bolt and continue to loosen).
That's a good point. I have owned my 1990 FLHS from new and there were several things that went wrong during the first few years. I have never had problems with the front pulley, although the oil seal behind it leaked. I have not had any problems since fixing it. I had it done by a Harley specialist, so don't know if he fitted anything different from stock. I have an S&S 107 in the bike now and the tranny is still stock.
 
  #17  
Old 12-06-2010, 12:50 PM
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That stock crankcase seal on the primary side is single lipped and meant to keep primary oil out of the motor but it does weep motor oil into the primary. If you're running a wet primary you're not apt to notice it, But with a dry primary (ie, an open belt drive) you will. But in either case if the oil starts getting into your rotor and stator you will begin to notice charging problems. There is an aftermarket double lipped seal (seals both ways) and that seems to be the fix. If you notice oil weeping out where your voltage regulator is plugged into the front of the case, you can silicone it up to stop the leak, but that's just a band aid, as it means your alternator is also getting gunked up . . .

 
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