Author Topic: Scat crankshaft  (Read 1119 times)

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jayb

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Re: Scat crankshaft
« Reply #15 on: March 26, 2020, 07:10:50 PM »
I have 2 cracked 428 cranks sitting here now.  I gave a third one away a couple weeks ago, to a guy who wanted it for mockup purposes.  Not saying they aren't tough, but after 50 years and some abuse, I wouldn't trust one...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

FElony

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Re: Scat crankshaft
« Reply #16 on: March 26, 2020, 07:58:08 PM »
The answer here is simple. If the car in question is an actual CJ Mach, then the original crank should go back into the original block and assembled with correct N heads, C intake, cast exhausts and the rest. Take all the aftermarket bits and build a cammed beater engine to stick in a different car. Simple.

FElony

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Re: Scat crankshaft
« Reply #17 on: March 26, 2020, 08:01:52 PM »
... Picture of one of my Ford 428 cranks.

If I was that rusty and someone dropped me on that concrete, I'd have spinal alignment issues, also.

jayb

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Re: Scat crankshaft
« Reply #18 on: March 26, 2020, 09:05:02 PM »
That crank broke when it was in the car, thatdarncat's 67 Shelby.  It's been sitting around for a while, obviously...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

FElony

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Re: Scat crankshaft
« Reply #19 on: March 26, 2020, 09:31:52 PM »
That crank broke when it was in the car, thatdarncat's 67 Shelby.  It's been sitting around for a while, obviously...

You're a shill for Scat, obviously. However, I won't press charges if you hurry up and sell me the red car.

jayb

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Re: Scat crankshaft
« Reply #20 on: March 26, 2020, 10:20:25 PM »
You're dreamin', buddy  ;D  Got plans for that one...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

FElony

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Re: Scat crankshaft
« Reply #21 on: March 26, 2020, 11:44:52 PM »
You're dreamin', buddy  ;D  Got plans for that one...

Don't make me resort to my proven methods.
https://i.ebayimg.com/images/i/201305838489-0-1/s-l1000.jpg
« Last Edit: March 26, 2020, 11:47:29 PM by FElony »

fekbmax

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Re: Scat crankshaft
« Reply #22 on: March 26, 2020, 11:58:35 PM »
Stock Ford cast FE, and 428, cranks are good, but they’re not invincible. Don’t get me wrong, I still use my Ford cranks, but like Jay said, the Scat crank is fine too. Barry has commented on the Scat counterweight - piston skirt interference before, so it’s not an unknown issue, Since you have the Scat crank I’d probably consider Barry & Brents advice and look into either an exchange or have your machine shop make the required modifications. Picture of one of my Ford 428 cranks.




I broke a 428 iu crank just like that one. It could pass for mine ..
Keith.  KB MAX Racing.

FElony

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Re: Scat crankshaft
« Reply #23 on: March 27, 2020, 12:17:56 AM »
Stock Ford cast FE, and 428, cranks are good, but they’re not invincible. Don’t get me wrong, I still use my Ford cranks, but like Jay said, the Scat crank is fine too. Barry has commented on the Scat counterweight - piston skirt interference before, so it’s not an unknown issue, Since you have the Scat crank I’d probably consider Barry & Brents advice and look into either an exchange or have your machine shop make the required modifications. Picture of one of my Ford 428 cranks.


I broke a 428 iu crank just like that one. It could pass for mine ..

Damn, you guys sure like spitting rods and valves out, 'cuz 1U's just don't do that by themselves.  8)

cjshaker

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Re: Scat crankshaft
« Reply #24 on: March 27, 2020, 10:21:05 AM »
Stock Ford cast FE, and 428, cranks are good, but they’re not invincible. Don’t get me wrong, I still use my Ford cranks, but like Jay said, the Scat crank is fine too. Barry has commented on the Scat counterweight - piston skirt interference before, so it’s not an unknown issue, Since you have the Scat crank I’d probably consider Barry & Brents advice and look into either an exchange or have your machine shop make the required modifications. Picture of one of my Ford 428 cranks.


I broke a 428 iu crank just like that one. It could pass for mine ..

Damn, you guys sure like spitting rods and valves out, 'cuz 1U's just don't do that by themselves.  8)

Just offhand, I can think of at least 5 forum members who have broken 428 cranks over the years. All drag racing, but that's the caveat of a used crank, you don't know what its been through.
Doug Smith


'69 R-code Mach 1, '65 427 MR, 2x4, 4-spd, 4.30 Locker
2 1965 Galaxies with 390s
1970 F-350 390
1958 Ford Ranch Wagon 390

pbf777

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Re: Scat crankshaft
« Reply #25 on: March 27, 2020, 12:40:30 PM »
      From our experience over the decades of magnaflux testing of Ford O.E.M. 428 cast iron crankshafts, on what I call "first-go-a-round" (at least it's still standard bearing journal size anyway) with generally typical passenger car use, I'd say about 20% have proven to be failed (cracked)!         :o

      This being perhaps slightly better than the typical 5.0 S.B.F., but probably the next most likely to prove cracked unit of any in the Ford V8 lineup.          ;)

      Scott.

Mach1428cj

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Re: Scat crankshaft
« Reply #26 on: March 27, 2020, 12:59:10 PM »
I called Scat and visit with them on my problem. They indicated to me I need to go with a different piston when using this crank as the pin boss is to large on the older stock replacement TRWs. I asked why that wasn't that stated in the description of the crank as it does say stock replacement. Didn't have an answer . He indicated that he could either throw me a deal on pistons or give me a deal on a complete rotating assembly such as a 462 stroker for my trouble. He told me he would give me a complete balanced 462 kit for 1,488.00. Is this the way to go or should I buy pistons and have everything rebalanced and go that way. Sorry for all the questions just don't know which way to go.  Is the 462 a good combination for the street also would there be any block mods to do for clearances when using a stroker
« Last Edit: March 27, 2020, 01:12:44 PM by Mach1428cj »

Barry_R

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Re: Scat crankshaft
« Reply #27 on: March 27, 2020, 03:22:19 PM »
That is an incredible deal on the 462 - I would go that route in a heartbeat.
No special clearance or grinding needed, and extremely street friendly

jayb

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Re: Scat crankshaft
« Reply #28 on: March 27, 2020, 06:08:57 PM »
^^^  This!
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

Gaugster

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Re: Scat crankshaft
« Reply #29 on: March 27, 2020, 07:07:43 PM »
Green with envy!
John - '68 Cougar XR7 390 FE (X-Code)