Author Topic: Has anyone ever used JB Weld on their Enging case?  (Read 1478 times)

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Offline Cabreco

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Has anyone ever used JB Weld on their Enging case?
« on: October 02, 2017, 05:39:11 PM »
I have a small crack in the right engine case of my EVO.
It weeps oil. ( finally traced the leak)

It's a small crack but it is annoying.

I'd love to hear your result experiences & prep details.

Andy
Johnson City Tennessee

Offline thumper 823

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #1 on: October 02, 2017, 05:46:24 PM »
WHAT CAN YOU LOOSE?
Stop drill it , "V" it,  and JB weld it.
BUT 
Dush the crap out of it with brake clean, acetone and finally start fluid B4 JB weld.
PS
(It looks EZ enough to weld it from here.)
Dending on where the crack is and what stress it may cause from the weld.
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline Burnout

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #2 on: October 02, 2017, 05:50:03 PM »
JB Weld will be harder to remove when you decide to fix it right.....

Winter's coming perfect time for a teardown.
They don't call me Ironhead Rick just because I'm "hard headed"

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #3 on: October 02, 2017, 07:52:56 PM »
WHAT CAN YOU LOOSE?
Stop drill it , "V" it,  and JB weld it.
BUT 
Dush the crap out of it with brake clean, acetone and finally start fluid B4 JB weld.
PS
(It looks EZ enough to weld it from here.)
Dending on where the crack is and what stress it may cause from the weld.

The crack is behind the oil pump. It goes down & towards the transmission mounting bolts.
That is exactly how I was thinking to approach it, when you say stop drill it, I assume you mean at the end of the crack. Not really drill through into the case, just dimple it right?

JB Weld will be harder to remove when you decide to fix it right.....

Winter's coming perfect time for a teardown.

Burnout, there is no way I would spend that much effort on this EVO. It's either JB Weld or part out.
Andy
Johnson City Tennessee

Offline thumper 823

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #4 on: October 03, 2017, 01:54:37 AM »
Stop drill would mean going as deep as the crack.
However, in your situation, the filings might make it all worse.
Clean it really well and slobber some JB weld on, see what happens.
If that does not work you will have to grind and clean the stuff out of there for a weld job.
Aluminum has to be sterile clean to be able to weld.
There is even oil in the porosity of the metal that has to cleaned out B4 doing it.
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline Deye76

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #5 on: October 03, 2017, 06:45:07 AM »
I see a engine case, or a crate motor in your future.  :emsad:
East Tenn.
2014 CVO RK, 2015 RGS, 1992 FXRP

Offline thumper 823

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #6 on: October 03, 2017, 06:54:56 AM »
I would say whatever is cheaper, as that looks entirely fixable.
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #7 on: October 03, 2017, 08:05:30 AM »
I see a engine case, or a crate motor in your future.  :emsad:

More like I see a bike break down & a lot of parts for sale on HTT lol
Andy
Johnson City Tennessee

Offline thumper 823

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #8 on: October 03, 2017, 08:37:29 AM »
There used to be a guy called Dragon years ago that would weld up pieces!
ESP on a Blown Sportster transmissions.
So- anything can be done...The question is it worth it?
That crack to me looks EZ unless it will upset the Tranquillity of some other Parts.
By that I mean- welding changes the whole dimensions as it shrinks dwn the unit is was applied to.
In some areas, it does not matter.
Others are pretty critical.-therefor would need line bored, lapped ETC
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline jeffscycle

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #9 on: October 03, 2017, 09:19:07 AM »
I see a engine case, or a crate motor in your future.  :emsad:

    I never caught  what year it was, but if its between '88-'93, don't bother & just buy some cases.
'01 FXDXT, '99 FXDL/XRD, '76 FLH

Offline FSG

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #10 on: October 03, 2017, 11:09:23 AM »
What about using some LOCTITE 290 Wicking Grade Green Threadlocker ?

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #11 on: October 03, 2017, 02:23:50 PM »
Spent some time today on it. Made sure the oil was out. Cleaned it thoroughly. Stop drilled the  crack & v grooved the entire crack. Afterwards I used several passes of lacquer thinner to make sure it ware absolutely clean before applying JB Weld.
Well let's see how it plays out.

Andy
Johnson City Tennessee

Offline cherryseeg2

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #12 on: October 03, 2017, 03:03:38 PM »
Have a set of black 93 cases here in a box if your are interested in fixing. 
2005 Cherry SEEG2-J&B Performance 120 163hp/144tq

Offline Deye76

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #13 on: October 03, 2017, 04:11:54 PM »
"There used to be a guy called Dragon "

 Biggest rip off artist in the industry. Now he's a gun dealer or something like that. He butchered more than a meat cutter. JB Weld will be light years better than anything he can do.
East Tenn.
2014 CVO RK, 2015 RGS, 1992 FXRP

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #14 on: October 03, 2017, 06:19:44 PM »
Have a set of black 93 cases here in a box if your are interested in fixing.

Appreciate the offer Cherry but in all honesty, I don't want to put that much work into it.
I bought this bike on a whim because of the price, but I think the previous owner saw me coming!

Andy
Johnson City Tennessee

Offline FLHRI_2004

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #15 on: October 04, 2017, 05:00:13 AM »
I'd just run it with the JB fix and see how oil tight it is.
My Ride: Road King

Offline PoorUB

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #16 on: October 04, 2017, 06:28:01 AM »
WHAT CAN YOU LOOSE?
Stop drill it , "V" it,  and JB weld it.
BUT 
Dush the crap out of it with brake clean, acetone and finally start fluid B4 JB weld.
PS
(It looks EZ enough to weld it from here.)
Dending on where the crack is and what stress it may cause from the weld.

 :agree:

I ran a 8HP Tecumseh engine for years with a patched hole in a block from a blown con rod. I finally sold it and showed it to the guy that bought it, he didn't care either. It seeped oil, not enough to drip, but it always had a oil film over the patch.

The worst part on a porous Evo case is getting it clean enough. I would be tempted to clean it good and do FSG's Locktite repair, then JB Weld over that.
I am an adult?? When did that happen, and how do I make it stop?!

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #17 on: October 04, 2017, 08:32:48 AM »
WHAT CAN YOU LOOSE?
Stop drill it , "V" it,  and JB weld it.
BUT 
Dush the crap out of it with brake clean, acetone and finally start fluid B4 JB weld.
PS
(It looks EZ enough to weld it from here.)
Dending on where the crack is and what stress it may cause from the weld.

 :agree:

I ran a 8HP Tecumseh engine for years with a patched hole in a block from a blown con rod. I finally sold it and showed it to the guy that bought it, he didn't care either. It seeped oil, not enough to drip, but it always had a oil film over the patch.

The worst part on a porous Evo case is getting it clean enough. I would be tempted to clean it good and do FSG's Locktite repair, then JB Weld over that.

Well I checked on the patch I did yesterday & it looked promising. I sanded it a little bit to smooth off some of the hard edges. and decided to add just a little more to fill any low spots.

Cleaning wasn't too difficult. Knowing the porous nature of these cases I originally degreased the spot, the let it dry. Afterwards I literally drenched it in Lacquer thinner multiple time & wiped it down in between. After I sanded it this morning I again did the Lacquer drenching several more times.

Tomorrow I will put the pump cover back on (AGAIN) and fire her up to see if this worked.

Here is what it looks like after the second coat.

Next comes feathering the edges, smoothing it out a bit & repainting the case repair with high heat flat black.

Andy
Johnson City Tennessee

Offline hbkeith

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #18 on: October 04, 2017, 04:18:49 PM »
I would let it cure real good before fire bike up , may last  :nix:

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #19 on: October 04, 2017, 04:46:49 PM »
I would let it cure real good before fire bike up , may last  :nix:

 :up:
Andy
Johnson City Tennessee

Offline jeffscycle

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #20 on: October 05, 2017, 08:57:45 AM »
I would let it cure real good before fire bike up , may last  :nix:

 :up:
              If it stops or slows it to a sweat you lucky, but the long term forecast isn't good. The issue is that its over the breather cavity, and that gets pressurized more so with lots of oil in the proximity. Put a bug in your honey's ear that Santa needs to bring you some cases, You can find Ultima's around for about $800, and is a relatively easy exchange with just gaskets & set of rings (and a quicky valve job), IF nothing else is wrong.
'01 FXDXT, '99 FXDL/XRD, '76 FLH

Offline dablaze

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #21 on: October 05, 2017, 12:27:36 PM »
Quote
"There used to be a guy called Dragon "

 Biggest rip off artist in the industry. Now he's a gun dealer or something like that.

That's the same dragon? I saw his gun shop videos, it was mildly amusing to watch the guy stroke his own ego. The good people on this forum warned me off of him years ago, he used to advertise like $299 rebuilds...yeah right!

There was also a decent guy called dragon that passed a few years back, just saying.

I got a motor that had the typical pan number boss crack that the guy ran with JB weld for over 10 years. That being said, it's not a good set of cases anymore, but could be a reasonable solution for a reasonable amount of time.

Craig
Second Shift Cycle

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #22 on: October 05, 2017, 12:33:47 PM »
I would let it cure real good before fire bike up , may last  :nix:

 :up:
              If it stops or slows it to a sweat you lucky, but the long term forecast isn't good. The issue is that its over the breather cavity, and that gets pressurized more so with lots of oil in the proximity. Put a bug in your honey's ear that Santa needs to bring you some cases, You can find Ultima's around for about $800, and is a relatively easy exchange with just gaskets & set of rings (and a quicky valve job), IF nothing else is wrong.

Well this bike is filled with good news/bad news since I bought her. I today I finished the JB weld project. I painted the repair, & reinstalled the oil pump cover & lines & fired her up. She is bone dry and running.

Now the bad news...My charging system stopped working... :doh:
Andy
Johnson City Tennessee

Offline jeffscycle

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #23 on: October 05, 2017, 01:48:48 PM »
   I never did hear what year it is? that being said, when you go in to look at your stator, put a well fitting pipe over the output shaft & wiggle it. Look at the seam between the aluminum casting & the steel bearing race holder, if you see oil ooze out from the crack, You guessed it! While your at it notice how much oil come out of the primary, that oozing can leak oil from the motor over.
'01 FXDXT, '99 FXDL/XRD, '76 FLH

Offline JohnCA58

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #24 on: October 05, 2017, 02:43:59 PM »
best product for repairing the block is Loctite 97473 , stuff is not cheap but works great,  have repaired 80 liter engines with hole from rod failure,  use on bearing housing and machined back to specs.   diesel block repairs many times.    last time I had to buy was close to 100 bucks. 
YOLO

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #25 on: October 05, 2017, 03:17:33 PM »
   I never did hear what year it is? that being said, when you go in to look at your stator, put a well fitting pipe over the output shaft & wiggle it. Look at the seam between the aluminum casting & the steel bearing race holder, if you see oil ooze out from the crack, You guessed it! While your at it notice how much oil come out of the primary, that oozing can leak oil from the motor over.

Jeff it's a 1990. Tested the stator output and ground & it checked out. I had an extra rectifier so I swapped it out & it is working perfect. Just picked up a new battery and this problem was an easy fix. Funny thing is when I picked this bike up, the volt meter used to jump quickly back & forth between 11 & 13.5 volts so I replaced the oem gauge. (I always assumed it was due to the Harley shaking) It didn't help. Now with the new rectifier it is reading steady.

Now if all the gremlins can stay at bay, I will begin Soda Blasting the plastics & tank for paint.
Andy
Johnson City Tennessee

Offline Deye76

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #26 on: October 05, 2017, 03:56:09 PM »
"She is bone dry and running."

Good job. Hope it holds.  :up:
East Tenn.
2014 CVO RK, 2015 RGS, 1992 FXRP

Offline Cabreco

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #27 on: October 06, 2017, 08:39:52 AM »
"She is bone dry and running."

Good job. Hope it holds.  :up:

 :bike:


Andy
Johnson City Tennessee

Offline bobrk1

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #28 on: October 07, 2017, 06:26:03 PM »
A neighbor  had a 750  honda the chain got loose and  wore a hole in the  case I used some epoxy 5 years  later  still  running  patched  a cracked  block  on a car I  had run it 9 years  so I  say the stuff   should  be  good 

Offline 1FSTRK

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #29 on: November 25, 2017, 04:53:04 AM »
   I never did hear what year it is? that being said, when you go in to look at your stator, put a well fitting pipe over the output shaft & wiggle it. Look at the seam between the aluminum casting & the steel bearing race holder, if you see oil ooze out from the crack, You guessed it! While your at it notice how much oil come out of the primary, that oozing can leak oil from the motor over.

Jeff it's a 1990. Tested the stator output and ground & it checked out. I had an extra rectifier so I swapped it out & it is working perfect. Just picked up a new battery and this problem was an easy fix. Funny thing is when I picked this bike up, the volt meter used to jump quickly back & forth between 11 & 13.5 volts so I replaced the oem gauge. (I always assumed it was due to the Harley shaking) It didn't help. Now with the new rectifier it is reading steady.

Now if all the gremlins can stay at bay, I will begin Soda Blasting the plastics & tank for paint.


That is a common breaking point on those cases. It will only be dry until it breaks the corner of the case the rest of the way off. Not what you wanted to hear but I have seen many of them over the years.
"Never hang on to a mistake just because you spent time or money making it."

Offline Thermodyne

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #30 on: November 26, 2017, 10:06:56 AM »
Spent some time today on it. Made sure the oil was out. Cleaned it thoroughly. Stop drilled the  crack & v grooved the entire crack. Afterwards I used several passes of lacquer thinner to make sure it ware absolutely clean before applying JB Weld.
Well let's see how it plays out.


That crack is caused by a casting defect.  And there is a chance that you gave another crack in the base of the mounting flange. 



Welding was not a reliable option to repair those cases, since the fault was in the casting wall thickness. 



Offline deathwish

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #31 on: November 30, 2017, 09:30:27 PM »
Just a note. JB weld is far inferior to Locktite 1C also called Hysol. We use a lot of Hysol on vintage kart engines. Stronger, handles heat better, is oil and alcohol resitant. On the inside of an alky burning kart engine if you use JB weld it will break down in a a year. If you use  Hysol it will still be there 10 years later. McMaster Carr carries it.

Online david lee

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #32 on: December 01, 2017, 05:03:56 AM »
from what i see here its a bad design

Offline farmall

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #33 on: December 02, 2017, 12:56:03 PM »
Just a note. JB weld is far inferior to Locktite 1C also called Hysol. We use a lot of Hysol on vintage kart engines. Stronger, handles heat better, is oil and alcohol resitant. On the inside of an alky burning kart engine if you use JB weld it will break down in a a year. If you use  Hysol it will still be there 10 years later. McMaster Carr carries it.

Hysol adhesives are great stuff. The Air Force uses them to attach wire bundle standoffs to F-16s.  (Mix in the bottom of an inverted soda can, apply, then set the can aside to cure. When the leftover Hysol on the can is cured, so is your workpiece.)

 Loctite 9483 sounds interesting. I'll pass that to my machinist friend who has to fix lots of oddball, ancient production machinery.



Offline deathwish

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #34 on: December 07, 2017, 06:42:39 PM »
Hysol is so good we take a T style crank throw in a 2 stroke and put an alum band around it and fill it with Hysol. Making a full circle crank that spins at 13,000 rpm in a 375* engine in alky and oil. It will last for years when done properly. JB weld will last for only a few runs. There is that much difference and the cost is almost the same.

Offline PoorUB

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Re: Has anyone ever used JB Weld on their Enging case?
« Reply #35 on: December 10, 2017, 07:30:41 PM »
Many years ago I had a marine mechanic tell me they had a back up generator on a large ship that scored a cylinder. They wanted to boat loaded and under way and parts to do a proper job were a few days away. Something about the inspections not allowing them to leave without the genny running. :idunno: He said he filled the cylinder scores with epoxy, honed the cylinder and put it together. It ran long enough to get the ship OK'd for use and away it went. He ordered the proper parts and a few weeks later when the ship was in port he tore it down and fixed it properly. He claimed the cylinder repair still looked good, but it had just a few minutes of run time.
I am an adult?? When did that happen, and how do I make it stop?!