Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: gsmopar]
#2301483
05/09/17 12:09 AM
05/09/17 12:09 AM
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Joined: May 2004
Posts: 12,391 Taxes & Virus's R-US, NY
Dragula
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OP
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All told, I killed two rods, two pistons, two valve guides and associated valves, one oil pump, one oil pan, had to repair the block & crank....Oh and high gear in the trans....covered the headers in 20-50 and dinged one with the rod cap. Plus all the associated gaskets.....Not sure the total, but it wasn't cheap. We found some issues with the heads we addressed this time as well. What was the root cause of the failure? I'll be firing up my Hemi soon (with a lot of the same parts). Just hoping to learn from your experience. Thanks! Well, two things, you can NEVER have a big enough oil pan with a Hemi, and we did not restrict the flow of oil to the heads. I now have restrictors in the block. Hopefully, we do not limit it too much and burn up push rods. Burned #7 rod bearing on a pass and it all let go....
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Dragula]
#2316167
06/04/17 08:23 PM
06/04/17 08:23 PM
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Joined: May 2004
Posts: 12,391 Taxes & Virus's R-US, NY
Dragula
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The good news is, I can take a picture of the inside of the oil pan now for you. The bad news is, the rebuild didn't make it 10 miles down the road before major issues occurred.
So I got the engine running a few weeks ago, and it was in the car about a week. Went to take its maiden voyage down to the corner gas station and back, just to feel it out and put a few miles on it, and half way there, oil pressure started dropping.
I just happened to look across at the gauges and finally saw full engine temp and then looked over at the oil pressure, and it was already down to 45psi from 82psi....WTH!
Pull over and call a friend for a tow, no one answers...Fire it up and drive home, and it was down to 10psi if I am lucky by the time I pulled it back in.
So to make a long story short, I pull the engine a few days later and get it down to the shop. Pulled it apart, and struggled to find anything wrong.
Seems the crank we just had repaired, went and sprung once it reached full temp. That's the best explanation we can find. It was out .003" and I know it was straight when we put it in. Called Ohio crank about it, and they said that can happen on repairs like that.
So now, I am out my summer car, as I do not yet have a spare engine built. And I am wondering what my next move is....
Called Bryant for a crank, and its 14 weeks to get one...Still waiting to hear back about a Callie's for lead time. Might just sell it and build another 400/512 or a G3...Pretty depressed about it. Two summers in a row and Mopar day is this Saturday...no cruise nights or car shows this year either...
Last edited by Dragula; 06/04/17 08:24 PM.
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Dragula]
#2316188
06/04/17 08:52 PM
06/04/17 08:52 PM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
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I Live Here
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State of confusion
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Sorry to hear that man and can't you street the Duster..........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Thumperdart]
#2316343
06/05/17 12:19 AM
06/05/17 12:19 AM
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Joined: May 2004
Posts: 12,391 Taxes & Virus's R-US, NY
Dragula
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OP
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Sorry to hear that man and can't you street the Duster.......... I have thought about that....But got this nice looking Cuda sitting here with insurance and a fresh trans all ready to go, minus an engine...
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Dragula]
#2316349
06/05/17 12:31 AM
06/05/17 12:31 AM
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Joined: Feb 2005
Posts: 20,175 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,175
PA.
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I know you must really love your engine builder but don't you honestly think it's time for a divorce. Man I would love to have the money you spent on builds over the last five years. I wish you nothing but success on your next project
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: pittsburghracer]
#2316357
06/05/17 12:42 AM
06/05/17 12:42 AM
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Joined: May 2004
Posts: 12,391 Taxes & Virus's R-US, NY
Dragula
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I honestly don't think its his fault. It kicked a rod last year, and I sent it out to repair instead of replacing it. Finding all this out is like one of those doctors commercials, in the fine print, a repaired crank can retain a lot of stress in it after the repair.
At this point, I have an entire engine minus a crank....or at least a straight crank. And getting a new 4.75 crank is a lot tougher than I thought. Seems the standard is a 4.5...So maybe change crank and pistons and go 572, dunno....I am depressed.
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Dragula]
#2316389
06/05/17 01:31 AM
06/05/17 01:31 AM
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Joined: Aug 2003
Posts: 43,195 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
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How about seeing about straightening it and heating it up to 250 to 300 F several times afterwards to see if it has taken a permanent set or not All things steel are fixable with enough effort Powder coating company heat their stuff up in large ovens to around those temperatures Maybe have it heated up several times first and then straighten it
Last edited by Cab_Burge; 06/05/17 01:32 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Cab_Burge]
#2316407
06/05/17 02:02 AM
06/05/17 02:02 AM
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Joined: Jan 2003
Posts: 15,976 Chilliwack B.C. Canada
RUNCHARGER
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I Live Here
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Man, Hot Rods can be not worth it some days. Hope you can find a new crank for it. There has to be one somewhere.
Sheldon
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Dragula]
#2316424
06/05/17 02:44 AM
06/05/17 02:44 AM
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Joined: Jan 2003
Posts: 19,367 Las Vegas
Al_Alguire
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I Live Here
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Las Vegas
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Call Crower on the crank...
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: sc4400]
#2316451
06/05/17 07:41 AM
06/05/17 07:41 AM
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Joined: May 2004
Posts: 12,391 Taxes & Virus's R-US, NY
Dragula
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I just got a 4.75 crank from Ohio 2 weeks ago. Are they out of stock? Yes they are out...And those are on the cheapish side. Not sure if I wanted to go that route. Whatever the material Bryant uses is twice as strong as the 4340 cranks. I think he said 43M300...not sure, but 14 week lead time. How about seeing about straightening it and heating it up to 250 to 300 F several times afterwards to see if it has taken a permanent set or not All things steel are fixable with enough effort Powder coating company heat their stuff up in large ovens to around those temperatures Maybe have it heated up several times first and then straighten it This is what we might be up to.....It was a good crank, and its still is, but it has .003 in it now.... Call Crower on the crank... Had not thought about them. Looked up Weinberg last night, and 4.5" was it...
Last edited by Dragula; 06/05/17 07:44 AM.
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: DoubleD]
#2316530
06/05/17 12:19 PM
06/05/17 12:19 PM
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Joined: Feb 2005
Posts: 20,175 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,175
PA.
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Make a few calls to possibly Indy, Best Machine, Bob George Racing, and any other shops you can think of. Who knows what they have on stock and willing to part with
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: 23T Hemmee]
#2316604
06/05/17 02:31 PM
06/05/17 02:31 PM
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Joined: May 2004
Posts: 12,391 Taxes & Virus's R-US, NY
Dragula
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OP
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Make a few calls to possibly Indy, Best Machine, Bob George Racing, and any other shops you can think of. Who knows what they have on stock and willing to part with I have been in touch with AJ at BGR...He got me the one quote for a Callie's...Just didn't let me know lead time. I will keep that one in mind. Got a call, it was straightened again and all polished up. Not sure if the guy was happy about doing it or not....We will probably heat cycle it in the oven at the shop and make a judgement call on it. We also have a run in stand we can fire it up on and just see what happens before it goes in the car this time.
Last edited by Dragula; 06/05/17 02:36 PM.
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Re: The Quest Has Begun......605 Hemi Build, Updated!
[Re: Dragula]
#2316607
06/05/17 02:37 PM
06/05/17 02:37 PM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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I don't understand how the crank can be causing the pressure loss after being machined. When you say it's out .003", are you talking clearance or out of square? Can it not be ground .010" undersize on a straight cut?
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