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Author Topic: APE Studs  (Read 2671 times)

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Offline bunghole

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APE Studs
« on: July 23, 2008, 12:43:10 PM »
I was spending some time cleaning up the cases (oil galleries, threads, etc) before reassembly and thought I'd install the new APE studs.  They were very tight.  Too tight to finger tighten all the way down.  Is this normal, or are my threads buggered?  I stopped trying as I'd like to hear from anyone else who has installed them.

Thanks.
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Offline scondon

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Re: APE Studs
« Reply #1 on: July 23, 2008, 01:13:10 PM »
 Chase the threads in the case and lube the threads on the APE studs with loctite. A tight fit is good as you don't want these things spinning loose under any circumstances. It's the dry hole and gunk in the threads that make installation by finger a bit hard, in my opinion.
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Offline bunghole

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Re: APE Studs
« Reply #2 on: July 23, 2008, 01:16:28 PM »
Quote from: scondon on July 23, 2008, 01:13:10 PM
Chase the threads in the case and lube the threads on the APE studs with loctite. A tight fit is good as you don't want these things spinning loose under any circumstances. It's the dry hole and gunk in the threads that make installation by finger a bit hard, in my opinion.

What size thread chaser?  I thought these were some non-standard threading and it was a bad idea to run a chaser through them.  I did run a chucked nylon brush in each with some carb cleaner and gave them a good scrubbing and blow out, but still pretty tight.

Thanks.
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Offline scondon

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Re: APE Studs
« Reply #3 on: July 23, 2008, 01:32:39 PM »
 Just had a thread that covered this pretty well, maybe just a few pages back in the "SOHC bikes" threads ;)

   Carb cleaner will insure that all oil and lubricating properties are removed from the metal. You will have a "very" dry hole and the threads will bind the entire way down unless you add something back(like loctite,before it dries).
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Offline Sam Green Racing

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Re: APE Studs
« Reply #4 on: July 23, 2008, 01:56:29 PM »
you will have a "very" dry hole  ::) ::) ::) ::) ::) sounds painfull ;D ;D ;D ;D ;D especially if it's your bunghole :D :D :D :D :D

Sam. ;)
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Offline scondon

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Re: APE Studs
« Reply #5 on: July 23, 2008, 02:38:29 PM »
Quote from: SamCR750 on July 23, 2008, 01:56:29 PM
you will have a "very" dry hole  ::) ::) ::) ::) ::) sounds painfull ;D ;D ;D ;D ;D especially if it's your bunghole :D :D :D :D :D

Sam. ;)

   OMG, Sam! you did not just... :o :o Glad to see that humor and brain cell count are not linked and that one is never too old(young?) to dream up new "fart" jokes ;) ;) ;D ;D :D :D :D :D :D
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Offline bunghole

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Re: APE Studs
« Reply #6 on: July 23, 2008, 02:49:19 PM »
How hard should I have to screw the hole after I lube it up?
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Offline rbmgf7

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Re: APE Studs
« Reply #7 on: July 23, 2008, 04:33:01 PM »
Quote from: bunghole on July 23, 2008, 02:49:19 PM
How hard should I have to screw the hole after I lube it up?

wow. all the innuendo
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Offline scondon

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Re: APE Studs
« Reply #8 on: July 23, 2008, 04:55:06 PM »
Quote from: bunghole on July 23, 2008, 02:49:19 PM
How hard should I have to screw the hole after I lube it up?

   C'mon Sam, you've missed yer cue ;) ;D
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Offline Sam Green Racing

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Re: APE Studs
« Reply #9 on: July 23, 2008, 05:43:22 PM »
I didn't want kicking off the forum Sean, but sod it ;D ;D ;D ;D ;D ;D

Bunghole, read the first line of my signature ::) ::) ::) ::) ::) ::) ::) ::)

Sam :D :D :D :D ;)
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Offline MRieck

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Re: APE Studs
« Reply #10 on: July 23, 2008, 07:45:49 PM »
You want to CHASE the threads.....not cut them. I explained these in an earlier thread. Sam.....I'll be speaking to you soon.
  Mike
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Offline Sam Green Racing

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Re: APE Studs
« Reply #11 on: July 23, 2008, 07:49:06 PM »
Sorry Son :-[ :-[ :-[

Sam ::)
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Offline scondon

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Re: APE Studs
« Reply #12 on: July 23, 2008, 07:50:31 PM »
Quote from: MRieck on July 23, 2008, 07:45:49 PM
You want to CHASE the threads.....not cut them. I explained these in an earlier thread.....................

 ............to Bunghole, who found the right stuff at Sears if I recall. Did that kit not work out?
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Offline bunghole

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Re: APE Studs
« Reply #13 on: July 24, 2008, 09:36:55 AM »
Quote from: scondon on July 23, 2008, 07:50:31 PM
Quote from: MRieck on July 23, 2008, 07:45:49 PM
You want to CHASE the threads.....not cut them. I explained these in an earlier thread.....................

 ............to Bunghole, who found the right stuff at Sears if I recall. Did that kit not work out?

They actually don't sell that kit anymore (or at least for the time being).  I did find the identical kit online and ordered it, but it didn't seem like any of the chasers wanted to fit and I didn't want to put any force into it.  The case end of the studs is definitely slightly different than the head end.

What I ended up doing was oiling the threads really well and gradually working the studs clockwise and counter-clockwise.  On some, I had to double nut them to get them to bottom, but never required more than 8 ft-lbs.

Thanks for the help and advice.
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Offline scondon

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Re: APE Studs
« Reply #14 on: July 24, 2008, 10:01:19 AM »
 Sounds about the same as I experienced when installing these studs :)

  Sorry to hear that kit didn't work out for your purpose. Have you tried chasing other bolts/threads on your bike with it? I am wanting to get one to use on all the crank case bolts and other engine case threads, but if it doesn't work on our threads then.. :-\
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Offline bunghole

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Re: APE Studs
« Reply #15 on: July 24, 2008, 10:48:49 AM »
So far, I've been able to chase everything else on the cases as well as the bolts with the kit.  I think I've only needed the M8 and M10.  Its a good set so far.  I bought it here:

http://www.tooldiscounter.com/ItemDisplay.cfm?lookup=KAS971
« Last Edit: July 24, 2008, 10:50:32 AM by bunghole »
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Offline scondon

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Re: APE Studs
« Reply #16 on: July 24, 2008, 10:53:15 AM »
Thanks for the info. Much appreciated :) :)
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Offline mystic_1

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Re: APE Studs
« Reply #17 on: July 24, 2008, 10:55:42 AM »
Quote from: scondon on July 24, 2008, 10:01:19 AM
Sounds about the same as I experienced when installing these studs :)

  Sorry to hear that kit didn't work out for your purpose. Have you tried chasing other bolts/threads on your bike with it? I am wanting to get one to use on all the crank case bolts and other engine case threads, but if it doesn't work on our threads then.. :-\



Make you own thread chasers out of old OEM hardware.  Perfect fit.

mystic_1
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Offline scondon

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Re: APE Studs
« Reply #18 on: July 24, 2008, 11:30:22 AM »
Quote from: mystic_1 on July 24, 2008, 10:55:42 AM
Quote from: scondon on July 24, 2008, 10:01:19 AM
Sounds about the same as I experienced when installing these studs :)

  Sorry to hear that kit didn't work out for your purpose. Have you tried chasing other bolts/threads on your bike with it? I am wanting to get one to use on all the crank case bolts and other engine case threads, but if it doesn't work on our threads then.. :-\



Make you own thread chasers out of old OEM hardware.  Perfect fit.

mystic_1

  I would have to buy more tools to do this :P ;D   I really dig Gamma's stud chaser and will give it a go, as soon as I buy a vice ;) .
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Offline Gamma

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Re: APE Studs
« Reply #19 on: July 24, 2008, 02:05:09 PM »
http://i192.photobucket.com/albums/z293/galaxy8155/ElCheapoThreadChaser.jpg[/img]]

Thanks Sean
I just ran this down each hole once, carefully, with a bit of oil.
I found that the only holes that were quite easy to spin the new studs into by hand were the main bearing studs (a bit too easy for my liking, but should be OK).  On these I had to back some of them out to their correct height.
I use Loctite 241, a medium strength blue loctite.
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Offline bunghole

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Re: APE Studs
« Reply #20 on: July 24, 2008, 02:24:03 PM »
Quote from: Gamma on July 24, 2008, 02:05:09 PM
http://i192.photobucket.com/albums/z293/galaxy8155/ElCheapoThreadChaser.jpg[/img]]

Thanks Sean
I just ran this down each hole once, carefully, with a bit of oil.
I found that the only holes that were quite easy to spin the new studs into by hand were the main bearing studs (a bit too easy for my liking, but should be OK).  On these I had to back some of them out to their correct height.
I use Loctite 241, a medium strength blue loctite.

Speaking of which...

Two questions.  Should I swap out the main bearing bolts to APE studs, or am I OK with just the head studs?

What is the correct height for the head studs?  I noticed that some of the case holes go all the way through into the case and you could theoretically thread the studs all the way down into the case.

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Offline Gamma

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Re: APE Studs
« Reply #21 on: July 24, 2008, 10:01:14 PM »
I changed my main bearing studs because it made sense at the time as I was doing the others, however I'll let the experts answer that. 

Can't seem to find the head stud heights as I measured the old ones before removal, but I think they all torqued down to pretty much the same height as previous ones, you can easily work out the correct heights.  I think slipped the head and barrels on to check.
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Offline 754

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Re: APE Studs
« Reply #22 on: July 25, 2008, 08:28:59 PM »
I think that the threads should be clean, before install..either chemically or  by using proper tap.

Dont expect loctite to work if you only clean out part of the tapped hole..
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