| Author |
Message |
FullFender
Samba Member
Joined: October 25, 2014
Posts: 647
|
 Posted: Mon Apr 02, 2018 7:19 pm Post subject: I think I just screwed myself - Cracked Case |
 |
|
Welp, kinda at a loss here.
Just rebuilt the top end of my Turbo 1915cc and put it in my bug.
I had finished installing the full flow before putting in. I was investigating a "small" oil leak today when I noticed a small crack right above the return fitting leftmost if the lower pulley. It must've happened when I tightened it. Is this going to be fixable? I really don't want to replace the block...but it is what it is.
|
|
| Back to top |
|
 |
esde
Samba Member
Joined: October 20, 2007
Posts: 5966
Location: central rust belt
|
| Posted: Mon Apr 02, 2018 7:29 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
Yes it can be repaired, but you'll have to strip the case down. And, it'll have to go somewhere that can competently weld magnesium. Rimco and Brothers should be able to do it..
That damned fitting bites so many people in the ass! I have learned to NOT tighten it much, and instead rely on a copious amount of red loctite to seal it.
100% success rate so far
SD
_________________
modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that. |
|
| Back to top |
|
|
Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76911
Location: Sneaking up behind you
|
| Posted: Mon Apr 02, 2018 7:33 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
I had a crack in the same place years ago. I dripped a small hole at the end of the crack to stop it from spreading. i then cleaned the case and applied a 2 part epoxy. 5 years and 60,000 miles later the engine failed totally unrelated to the crack.
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare |
|
| Back to top |
|
|
veeweeman
Samba Member
Joined: December 20, 2009
Posts: 940
Location: New Port Richey, FL
|
| Posted: Mon Apr 02, 2018 8:19 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
This is where paranoia sets in  |
|
| Back to top |
|
|
nsracing
Samba Member
Joined: November 16, 2003
Posts: 9462
Location: NOVA
|
| Posted: Mon Apr 02, 2018 8:28 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
how many times are we gonna do this?
if it is a straight hole and you jab something tapered in there- yes it will crack.
i have said it so many t8mes taper ream it first then thread it. it will never crack that way.
small crack that is a true pain in the butt. |
|
| Back to top |
|
|
FullFender
Samba Member
Joined: October 25, 2014
Posts: 647
|
| Posted: Mon Apr 02, 2018 8:50 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| veeweeman wrote: |
| This is where paranoia sets in |
Yah no kidding, it's always the little things that you never expect that get ya
| nsracing wrote: |
how many times are we gonna do this?
i have said it so many t8mes taper ream it first then thread it. it will never crack that way.
|
Okay..before I do anything else to my car I will come to you first to make sure it is okay. |
|
| Back to top |
|
|
ach60
Samba Member
Joined: May 14, 2001
Posts: 4139
Location: Santa Maria
|
| Posted: Mon Apr 02, 2018 9:05 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
So why is the oil taking a hard right after coming out of the fitting in the case?
You have got to be restricting flow a lot with that 2nd 90 degree fitting.
That crack doesn't look like it goes past the end of the fitting INSIDE the case.
I agree with Glenn, stop drill the crack, clean & fill.
_________________
Good Luck
Al |
|
| Back to top |
|
|
scotty timmerman
Samba Member
Joined: January 10, 2010
Posts: 1000
Location: gigharbor W.A
|
|
| Back to top |
|
|
FullFender
Samba Member
Joined: October 25, 2014
Posts: 647
|
| Posted: Mon Apr 02, 2018 9:35 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| FullFender wrote: |
So why is the oil taking a hard right after coming out of the fitting in the case?
You have got to be restricting flow a lot with that 2nd 90 degree fitting.
That crack doesn't look like it goes past the end of the fitting INSIDE the case.
I agree with Glenn, stop drill the crack, clean & fill. |
Yes I agree that it is probably restricting but that is the only way to get an oil line on there without burning it on the header.
I'll most likely go the route you and glen have suggested. Hopefully it'll hold till winter when I can tear it down and have it welded or build it up into larger 2 liter using parts my buddy has collected.
I appreciate the help everyone. |
|
| Back to top |
|
|
Teeroy
Samba Member
Joined: April 20, 2003
Posts: 3685
Location: Eastern WA
|
| Posted: Mon Apr 02, 2018 11:32 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
You can also plug that port and have the type 3/ bay window style outlet /inlet mod done to the case. This also require full tear down, but get hoses out of the way of exhaust or engine hanger
_________________
Pres. Rivercity VW Club www.rcvwclub.org
Founder Derr Wheat Panzers (DWP)
ARR #3
www.autosportsnorthwest.org |
|
| Back to top |
|
|
UK Luke 72
Samba Member
Joined: September 07, 2011
Posts: 2867
Location: Little Britain
|
|
| Back to top |
|
|
MConstable
Samba Member
Joined: May 04, 2004
Posts: 1822
Location: Saint Charles IL
|
| Posted: Tue Apr 03, 2018 10:29 am Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| UK Luke 72 wrote: |
When will people start using parallel thread and dowty washers?
Totally nullifies this issue. |
I’ve never heard of this?
Got links?
_________________
1974 Thing |
|
| Back to top |
|
|
UK Luke 72
Samba Member
Joined: September 07, 2011
Posts: 2867
Location: Little Britain
|
|
| Back to top |
|
|
theKbStockpiler
Samba Member
Joined: July 07, 2012
Posts: 2316
Location: Rust Belt
|
| Posted: Tue Apr 03, 2018 5:32 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
I wonder if a pipe tap could be placed in that hole and then TIG weld the crack up. The weld would pull the two halves together.
Edit: Actually maybe just put the fitting back in on the loose side and then weld.
Then , don't spin in a 90 and stop where you want it pointed regardless of the torque applied.
_________________
My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
|
| Back to top |
|
|
esde
Samba Member
Joined: October 20, 2007
Posts: 5966
Location: central rust belt
|
| Posted: Tue Apr 03, 2018 8:59 pm Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| UK Luke 72 wrote: |
When will people start using parallel thread and dowty washers?
Totally nullifies this issue. |
I have just bought some #6 ORB (o ring boss) fittings and a tap to try. If
It works it'll be a much nicer connection than the npt threads..
The fittings are big though, so finding a combination that clears a stock pulley is the hard part..
_________________
modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that. |
|
| Back to top |
|
|
atafonso
Samba Member
Joined: January 03, 2016
Posts: 33
Location: United Kingdom
|
| Posted: Wed Apr 04, 2018 2:13 am Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| esde wrote: |
Yes it can be repaired, but you'll have to strip the case down. And, it'll have to go somewhere that can competently weld magnesium. Rimco and Brothers should be able to do it..
That damned fitting bites so many people in the ass! I have learned to NOT tighten it much, and instead rely on a copious amount of red loctite to seal it.
100% success rate so far
SD |
Same here.
I tap and test the fitting until the fitting stays at the right position and tight ENOUGH. Then use red loctite. Takes a while, but it works perfect everytime.
Abel |
|
| Back to top |
|
|
Vanillagurilla
Samba Member
Joined: November 21, 2017
Posts: 1061
Location: California
|
| Posted: Wed Apr 04, 2018 2:15 am Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| theKbStockpiler wrote: |
I wonder if a pipe tap could be placed in that hole and then TIG weld the crack up. The weld would pull the two halves together.
Edit: Actually maybe just put the fitting back in on the loose side and then weld.
Then , don't spin in a 90 and stop where you want it pointed regardless of the torque applied. |
Can't weld a mag case like that, I believe they have to be welded under water or something like that. |
|
| Back to top |
|
|
Lo Cash John
Samba Member
Joined: February 06, 2004
Posts: 2246
Location: Jacksonville, FL
|
| Posted: Wed Apr 04, 2018 4:09 am Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
Mag case can be TIG'ed but it's got to be CLEAN. I mean REALLY CLEAN.
If it were me I'd try to clean and prep the crack for welding while the engine is together (I have my own TIG rig). If that fails, I'd just do a full tear down and try again. If that fails, I'd consult a better welder (I'm pretty good but not a pro) or plan on a new case.
Magnesium is porous so it's absorbs oil. Couple that with the fact it oxidizes like crazy and it means very good prep work is required.
_________________
www.LoCashRacing.org
More brains than bucks...Believe it or not!!
If you actually drive your VW, you need www.AirMapp.com
My boss told me I need to work on my mutli-tasking. So now when I use the bathroom at work I surf The Samba on my iPhone. |
|
| Back to top |
|
|
theKbStockpiler
Samba Member
Joined: July 07, 2012
Posts: 2316
Location: Rust Belt
|
| Posted: Wed Apr 04, 2018 8:00 am Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| Quote: |
| Can't weld a mag case like that, I believe they have to be welded under water or something like that |
I have never welded MAG myself but according to people that have only the dust ignites.
I had welding done on a MAG case. They cleaned it with brake cleaner and weren't a big pain in the ass about it. The end result was excellent.
_________________
My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
|
| Back to top |
|
|
Chad M
Samba Member
Joined: July 14, 2003
Posts: 723
Location: Alberta
|
| Posted: Wed Apr 04, 2018 8:50 am Post subject: Re: I think I just screwed myself - Cracked Case |
|
|
| theKbStockpiler wrote: |
| Quote: |
| Can't weld a mag case like that, I believe they have to be welded under water or something like that |
I have never welded MAG myself but according to people that have only the dust ignites.
I had welding done on a MAG case. They cleaned it with brake cleaner and weren't a big pain in the ass about it. The end result was excellent. |
This bears repeating if anyone here is so inclined to attempt the repair themselves.
https://isystemsweb.com/phosgene-gas |
|
| Back to top |
|
|
|
