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Re: Eagle cast stroker crank---Quality
[Re: flatiron]
#575558
01/07/10 02:15 AM
01/07/10 02:15 AM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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Quote:
Anyone familar with The eagle cast crank that Mancini has on sale part number#eag103604000 Opinions good or bad
Yep, unfortunately I am familiar with them.
Get the Scat if you must go cast, or possibly the Ohio crank. The balance hole through the rod throw is just too large, severely weakens the crankshaft.
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Re: Eagle cast stroker crank---Quality
[Re: dodgeboy11]
#575559
01/07/10 08:14 AM
01/07/10 08:14 AM
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Joined: Feb 2003
Posts: 12,675
Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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I've used several. One on the bench now. No issues in the applications I used them in. (street cars, hp between 430-480)
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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Re: Eagle cast stroker crank---Quality
[Re: moper]
#575560
01/07/10 08:48 AM
01/07/10 08:48 AM
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Joined: Nov 2006
Posts: 1,086
Baton Rouge, La.
StandOnIt
super stock
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super stock
Joined: Nov 2006
Posts: 1,086
Baton Rouge, La.
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Who makes the MP cast crank? I bought one from a friend of mine that had been completely reworked by Hotard. Lots of mallory and cleaning up. I'm only at about 430 or so hp and only spinning it up to around 5800 rpm so no problems with it at all. Foot brake car, 4" stroke sb.
76' Volare, 5.9 magnum w/Iron heads. New best 10.68 at 123 mph 1/4 mile.
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Re: Eagle cast stroker crank---Quality
[Re: patrick]
#575562
01/07/10 09:28 AM
01/07/10 09:28 AM
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Joined: Mar 2003
Posts: 2,504
PA
moparacer
master
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master
Joined: Mar 2003
Posts: 2,504
PA
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Quote:
ep, unfortunately I am familiar with them.
A few years ago I built an Eagle cast crank 4 inch stroke engine that made it about 100 passes before the crank broke. I was lucky enough to catch it on the line and it didnt hurt anything else. Mine broke at the back of the crank between the rear main and #7-8 rod journal.
Replaced it with a 4340 crank and have not had any problems since.
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Re: Eagle cast stroker crank---Quality
[Re: B G Racing]
#575566
01/07/10 11:55 AM
01/07/10 11:55 AM
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Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
master
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master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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I have used 2 MP cast cranks w/4"stroke. The forged were not available yet when I got these. I built 2 408"/360 for dirt track applications..Ross pistons, Eagle rods, solid flat tappet cams, W2 heads/intake. Made 500+ HP and 500+ ft/torque on dyno. They both were run in 3200# cars. Both were run 2 seasons before problems. The first one showed signs of cracking after mag-flux and was replaced with a forged MP crank. The second one showed NO signs of cracking, so was returned to service,,#5/6 crankpin pulled out the 3rd race of season. The MP forged crank had to be turned under on the mains before I could use it. It was .001" to big and .001" out of round. I don't use alot of MP anymore.
If you like drag racing, support your local track.
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Re: Eagle cast stroker crank---Quality
[Re: flatiron]
#575567
01/07/10 12:25 PM
01/07/10 12:25 PM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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In other threads I've read lots of opinions on breakage of Eagle cranks ==> junk. A common thread of these opinions involves racecar usage in the sub 11.00 range. Eagle rates the crank at 500 hp, so maybe some people push them beyond the published spec, break them, then say they are junk?  I think the suitability of this crank depends on what you want to use it for. 
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
Send a PM.
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Re: Eagle cast stroker crank---Quality
[Re: Fury Fan]
#575568
01/07/10 02:38 PM
01/07/10 02:38 PM
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Joined: Dec 2009
Posts: 1,074
detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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Quote:
In other threads I've read lots of opinions on breakage of Eagle cranks ==> junk. A common thread of these opinions involves racecar usage in the sub 11.00 range.
Eagle rates the crank at 500 hp, so maybe some people push them beyond the published spec, break them, then say they are junk?
I think the suitability of this crank depends on what you want to use it for.
I agree. They rate them at 500 hp and they seem to fail not too far past that, although some live through a lot more. It's not like there's any false advertisement.
I guess for the average dude with an off the shelf pre-built 450hp 408, they are fine, but I wouldnt even consider it any further than that.
I'm tired of hearing "well dont say I didnt warn you". The sting of hearing that is worse than the klunking noise in the bottom end. 
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Re: Eagle cast stroker crank---Quality
[Re: POS Dakota]
#575569
01/07/10 02:53 PM
01/07/10 02:53 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
master
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master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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I had one in a 408 in my Stock Appearing Duster. It ran 11.90's with no problems.
I did notice how little material was in the the arm between 7/8 and rear journal.
One thing that is nice about the eagle cast though, is it can be internally balanced with no mallory. Thats probably because of the limited material.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Eagle cast stroker crank---Quality
[Re: Fury Fan]
#575570
01/07/10 03:23 PM
01/07/10 03:23 PM
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Joined: Jul 2006
Posts: 4,179
California
mickm
master
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master
Joined: Jul 2006
Posts: 4,179
California
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Quote:
In other threads I've read lots of opinions on breakage of Eagle cranks ==> junk. A common thread of these opinions involves racecar usage in the sub 11.00 range.
but we are talking about the cast cranks, not eagle forged, correct?
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Re: Eagle cast stroker crank---Quality
[Re: Michael]
#575572
01/07/10 11:27 PM
01/07/10 11:27 PM
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Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
Rapid340
top fuel
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top fuel
Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
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I looked at an Eagle cast crank, it looked like someone used a die grinder on it to lighten the crankpin sides. That scared me away form buying it.
I used a SCAT/MP cast 4 in. crank, shifting at 7K, had no problems.
1971 Factory Appearing Duster 340 11.000 @ 122 mph
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Re: Eagle cast stroker crank---Quality
[Re: Fury Fan]
#575573
01/08/10 02:09 AM
01/08/10 02:09 AM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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Quote:
In other threads I've read lots of opinions on breakage of Eagle cranks ==> junk. A common thread of these opinions involves racecar usage in the sub 11.00 range.
Eagle rates the crank at 500 hp, so maybe some people push them beyond the published spec, break them, then say they are junk?
I think the suitability of this crank depends on what you want to use it for.
This was my combo.
4.030 flat top wiseco pistons hung on Eagle SIR rods. Eagle cast 4" crankshaft. Edelbrock LA heads with (junk) cat rocker arms. Cam was a hydraulic flat tappet, 231/237 @ .050" 110 LS installed 108 ICL. .560" at the valve. Torker II intake. Heads were ported but didn't flow past 275 cfm.
I highly doubt my combo was making 500 hp, though I could be wrong. I don't think that cam would support it. This crank lasted 6000 street miles. Granted I did beat on it but it never went over 6200 rpm.
It did warn me, I heard a knocking noise going home from work, but it was a sound I'd never heard before and the oil pressure was fine. No vibration, nothing. Then I rolled into the throttle going through an intersection and lit the tires up. Then there was vibration. Idled it home at 900 rpm. Wish I had stopped it and got myself towed home.
The other issues I had with this doorstop: One rod journal was a couple tenths under the low number, at least one side of it was. Thankfully(??:o??) the clearances still checked out and everything was within spec as far as taper and out of round, albeit, further out than I would have liked. Counterweights hit the pistons and the pilot bushing hole was an oddball size and I had to build a bushing.
I wouldn't touch another one with a ten foot pole. They (Eagle) sent me another one and I gave it to my boss at the time to use in a stocker.
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Re: Eagle cast stroker crank---Quality
[Re: 493_DART]
#575576
01/08/10 10:02 AM
01/08/10 10:02 AM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
moparts member
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moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Thats enough failures for me . No Eagle stuff then.
Funny......on this site......
some people on here want to bash 440Source---yet i dont see ANY info on massive failures with their cranks..........in fact, ive never heard of one yet.
Yes is'nt that funny how no one seems to have ever seen a Source crank actually fail? All the complaining comes from machining issues, which I'm sure they do have some of, & then home hobbiest engine builders who think having to scrape a main bearing to clear an 1/8" radius is some kind of challenge from Satan or something....
These Eagle CAST cranks seem to fail with regularity.... I know I would never sell another, no matter what the "intended" use was. Just because guy claims he only wants to make 425-450 HP today, never know what he will do with it in future. Just not worth the hassle/risk of running a known weak part. The 2 motors I saw them fail in were not making tremendous power, both would be under 500 HP on dyno I use, based on vehicle weights & track ET/MPH's, so you can take that under 500 HP rule & throw it away IMO.
Eagle & K1 4340 Forged 4" also have plenty of material in the CW's to not require mallory when internal balancing (unlike Callies/SCAT's) so the balance cost savings does'nt hold weight either, no pun intended. Just my
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