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risk Samba Member
Joined: June 24, 2004 Posts: 710 Location: Stumpbroke, Arkansas
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Posted: Thu Sep 05, 2013 7:26 am Post subject: Broke Okrasa 82mm Stroker Crank |
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My new canoe anchor...
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fivelugshortaxle Samba Member
Joined: May 13, 2011 Posts: 4254 Location: Aumsville, Oregon
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Posted: Thu Sep 05, 2013 8:06 am Post subject: |
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Nice!
You've actually got two canoe anchors now! _________________ Good things come to those who wait.
2332 with lots of goodies....
Rotating assembly balanced by Brothers VW
4340 84mm crank
AA 94mm p&c' s
Total seal 2nd ring, rest are Grants
5.5 h beams
Magnum straight cuts
Steve Long XR310 on a 106
CB 1.4 rockers
CB Magnaspark 2 distributor
NGK D7ea plugs
A1 lowdown 1 3/4 with single muffler
Dellorto 48's with 40 venturies
Kennedy Stage 2 with Daiken disc |
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jfats808 Samba Member
Joined: December 10, 2007 Posts: 5022 Location: oahu hawaii
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Posted: Thu Sep 05, 2013 10:07 am Post subject: |
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Before u toss it , see if Dpr or demello can repair it. Other than tge the obvious, any takes on what caused it? Something fall in the chamber or hydro lock, etc? Oil starvation.
After more looking at it isee multiple cracks on the journals. May not be worth the cost repair if it even can be. _________________ 2276 IDA's 86C 11-1 DD !
2017 48 Trijet DRLA's W125
Rockstar Suzuki wrote: |
You might as well put 10 year build in your bullshit sig, as it will NEVER run. Also your a dick |
You can always learn something new, even from a fool.
Check your oil levels routinely! |
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risk Samba Member
Joined: June 24, 2004 Posts: 710 Location: Stumpbroke, Arkansas
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Posted: Thu Sep 05, 2013 10:54 am Post subject: |
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A little history on this crank..
I bought it from a guy that raced vintage midget circle track cars. It was turned .010 & .010 and the case it was in had some battle scars from losing a rod or piston etc.
I put it all together with new bearings etc, and it ran great for about a year or so... then I put the turbo on and it ran even better.
Earlier this year I overboosted/detonated and cracked two cylinders... I replaced the cylinders and rings and ever since it had oil pressure issues, and would lose prime.
I think it had a hard life on the dirt track... but I probably put the last nail in the coffin when I popped those cylinders. |
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risk Samba Member
Joined: June 24, 2004 Posts: 710 Location: Stumpbroke, Arkansas
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Posted: Thu Sep 05, 2013 10:55 am Post subject: |
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fivelugshortaxle wrote: |
Nice!
You've actually got two canoe anchors now! |
Big end for the canoe, little end for the kayak haha |
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fivelugshortaxle Samba Member
Joined: May 13, 2011 Posts: 4254 Location: Aumsville, Oregon
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Posted: Thu Sep 05, 2013 11:02 am Post subject: |
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risk wrote: |
fivelugshortaxle wrote: |
Nice!
You've actually got two canoe anchors now! |
Big end for the canoe, little end for the kayak haha |
hahahaha _________________ Good things come to those who wait.
2332 with lots of goodies....
Rotating assembly balanced by Brothers VW
4340 84mm crank
AA 94mm p&c' s
Total seal 2nd ring, rest are Grants
5.5 h beams
Magnum straight cuts
Steve Long XR310 on a 106
CB 1.4 rockers
CB Magnaspark 2 distributor
NGK D7ea plugs
A1 lowdown 1 3/4 with single muffler
Dellorto 48's with 40 venturies
Kennedy Stage 2 with Daiken disc |
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Quokka42 Samba Member
Joined: December 02, 2010 Posts: 3117 Location: Melbourne, Australia
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Posted: Thu Sep 05, 2013 1:41 pm Post subject: |
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jfats808 wrote: |
Before u toss it , see if Dpr or demello can repair it. |
I think it's a bit mean to be making jokes. _________________ There has only ever been one man who was perfect, and they nailed Him to a cross. |
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HRVW Samba Member
Joined: May 01, 2011 Posts: 2531 Location: Rosarito, Mexico
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Posted: Thu Sep 05, 2013 1:45 pm Post subject: |
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Those mains look like a oil starving problem.
Get a case of JB Weld and make it into a lamp and smile every time the lamp light up. |
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Quokka42 Samba Member
Joined: December 02, 2010 Posts: 3117 Location: Melbourne, Australia
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Posted: Thu Sep 05, 2013 1:56 pm Post subject: |
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Oh, I think the OP got it a heavily overboosted engine can have one cylinder firing on the upstroke while the next is firing on the down... _________________ There has only ever been one man who was perfect, and they nailed Him to a cross. |
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jfats808 Samba Member
Joined: December 10, 2007 Posts: 5022 Location: oahu hawaii
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Posted: Thu Sep 05, 2013 2:05 pm Post subject: |
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Quokka42 wrote: |
jfats808 wrote: |
Before u toss it , see if Dpr or demello can repair it. |
I think it's a bit mean to be making jokes. |
You should reread my post dude. _________________ 2276 IDA's 86C 11-1 DD !
2017 48 Trijet DRLA's W125
Rockstar Suzuki wrote: |
You might as well put 10 year build in your bullshit sig, as it will NEVER run. Also your a dick |
You can always learn something new, even from a fool.
Check your oil levels routinely! |
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Quokka42 Samba Member
Joined: December 02, 2010 Posts: 3117 Location: Melbourne, Australia
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Posted: Thu Sep 05, 2013 2:24 pm Post subject: |
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Oh, lighten up. I was being facetious.
I do actually feel sorry for the guy, in fact I almost shed a tear myself at the death of an Okrasa. _________________ There has only ever been one man who was perfect, and they nailed Him to a cross. |
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Boolean Samba Member
Joined: January 19, 2012 Posts: 1712 Location: Stockholm
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RLFD213 Samba Member
Joined: January 21, 2009 Posts: 332
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Posted: Thu Sep 05, 2013 3:13 pm Post subject: |
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That's not broken. It's a 2 piece racing crank. |
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ralf Samba Member
Joined: July 08, 2008 Posts: 1215 Location: r4
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Posted: Thu Sep 05, 2013 3:39 pm Post subject: |
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3r/last pic of the OP's post
notice the non broken side of the journal's shoulder
crack evident.... gues if it didnt crack where it did now
it would have cracked on the other side of the same journal _________________ Flow Through a Curved Conduit
porting my SP head for my brother's project
https://youtu.be/OS_mVjQuqgk |
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esde Samba Member
Joined: October 20, 2007 Posts: 5966 Location: central rust belt
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Posted: Thu Sep 05, 2013 6:13 pm Post subject: |
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Was the center main beat into the case very badly?
Did you have the crank magnafluxed before running it? Did you align bore the case before running it? |
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Bubba & Waynes Drag C Samba Member
Joined: May 05, 2013 Posts: 94 Location: Willmington Delaware
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Posted: Thu Sep 05, 2013 7:01 pm Post subject: |
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that will buff right out |
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fastone Samba Member
Joined: August 16, 2010 Posts: 211 Location: So Cal
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Posted: Thu Sep 05, 2013 9:20 pm Post subject: |
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That's not uncommon to see with Midget cranks constant RPM's in those cars is 5000 to 8500.
I worked for Auto-Craft in the 80's and have seen many come in with cracks in the center main.
There is a reason people say you need a type 4 center main |
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drumbum68 Samba Member
Joined: October 15, 2010 Posts: 566
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Posted: Fri Sep 06, 2013 8:24 am Post subject: |
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Okrasa's had aluminum plugs? |
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tattooed_pariah Samba Member
Joined: April 24, 2006 Posts: 2047 Location: El Cajon, CA
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Posted: Fri Sep 06, 2013 8:37 am Post subject: |
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meh, some JB Weld will fix that right up.. _________________ -pariah (just a novice from "that other VW site")
'72 Volksrod "Effigy"
"Never worry about stepping on people's toes. People who get their toes stepped on are either sitting down, or standing still on the job."
-Admiral Arleigh Burke, USN(ret.) |
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