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Author Topic:   If you ran SCAT 9000 Cranks this year, Respond
Xtreme12x
Dirt Forum Champ
Total posts: 874
posted January 02, 2005 10:32 PM  
Who ran Scat stuff this year with any success, and what kind of compression, rods, pistons, rpm, horsepower produced...
Thanks

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted January 02, 2005 10:52 PM  
Also, has anyone had any luck lightening one of these at all?

racin78p
Dirt Freak

Total posts: 333
posted January 03, 2005 04:38 AM  
Ran a new stock stroke 350 SCAT crank, recon rods with ARP bolts, dome 12.5 aluminum TRW pistons, moly rings, turned around 7100 tops, making about 375 - 400 hp. No problems, held together nice and will re-use for this coming season. The price was right for the new crank last year, so gave it a try. Purchased it and the rest of the rotating assembly from JR Motorsports. Had a claimer balance job done before shipping, too. Don't know if this helps or not.

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racin78p
if it ain't fun, then don't run

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted January 03, 2005 07:47 AM  
We have a 13:1 355 turning up to 7400 and it has held together in the mod so far. Has maybe 20 nights total on it. Id guess it at maybe 530-540HP.

sixwillwin
Dirt Freak

Total posts: 493
posted January 03, 2005 08:00 AM  
Ran one in 383 this year, 475 hp or so, 6800 RPM, crank broke in half on 12th nite out. Saved nothing in the short block, never again for me.

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autoshop
Dirt Freak

Total posts: 298
posted January 03, 2005 09:29 AM  
ran a 383 scat crank and rods trw hyper pistons pulled piston apart after 5 nights ruined everything but heads.rods twisted but did not break except on one piston pulled apart.Cranks journals are good but it looks like it was hit with a ton of ball peen hammers.

racin78p
Dirt Freak

Total posts: 333
posted January 03, 2005 09:42 AM  
I am not a spokes person for SCAT,...but I have many a racin' friend around here who run the brand of crankshaft. I will NEVER push a porduct on anyone if there is a doubt to it's durability or worthyness. I can only say that I know of no one around my parts that has had a problem with their (SCAT)crank-shaft products. I WAS worried when we first bought the one we have in our main motor. Maybe (JUST!!!!) maybe people are turning their motors too tight or not put together with 100% TLC? I have done that and tried to blame it on parts before. Not trying to start a heated debate here, just saying that from where I am located, I have not heard of any problems with SCAT cranks, and ours held up just fine.

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racin78p
if it ain't fun, then don't run

chapa73
Dirt Maniac

Total posts: 169
posted January 03, 2005 10:39 AM  
I ran 1 this year.stock stoke 350,reman rods and some hypertek pistons,ran it in a mod,prolly about 11.1 compression.turned 7500 in a mod,for about 8 nites till piston broke at the wrist pin.I will run the same crank this year.just with some TRW forged pistons.

waltonjr1
Dirt Forum Champ
Total posts: 516
posted January 03, 2005 10:51 AM  
JR Motorsports 408, scat 9000 crank and scat rods, claimer balance, 7,000 rpm's. Made four races so far, will find out next season how tuff it is.


dgb
Dirt Full Roller

Total posts: 70
posted January 03, 2005 11:28 AM  

found a crack in mine during a routine rebuild/magnaflux. 12:1 comp, about 450 hp, about 6600-6800 rpm. It had about 25 races on it. Luckily I at least caught it before it got ugly.

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted January 03, 2005 12:13 PM  
I ask this question as kind of a poll, to put together a sort of sheet that shows who had success and who didn't. I've currently got my hands on 2 of the 350 cranks, and am unsure if i'm going to use them or not. I'm taking them in to have them magged, and checked for roundness. It seems like this question is asked once a year, and i know Steve doesn't like Chicom Stuff So lets try to keep it up at the top so people who have the same question can read what we post.

bauman
Dirt Roller

Total posts: 11
posted January 03, 2005 01:55 PM  
I am running a Scat crank in my main motor. It has 12.5-1 comp., scat rods, and weisco pistons. I have over 30 nights on this engine and have never had a problem with any of it even when I broke the main caps in the block.

backofpack
Dirt Maniac

Total posts: 102
posted January 03, 2005 04:22 PM  
we are going to build a 383 but didnt know which crank to use but it will be 4340 which is better scat or eagle i have 2 eagles with about 2 1/2 years on both with no rebuilds never had a problem where would my money be spent best

stockcar5
Dirt Forum Champ
Total posts: 578
posted January 03, 2005 06:54 PM  
spend it on a callies dragonslayer. you'll get years out of that crank. chances are a scat or eagle will be cracked after 1 season.

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21racer
Dirt Full Roller

Total posts: 56
posted January 03, 2005 08:01 PM  
i am running a SCAT crank in my 377. has 15 nights on it no problems. turning 7200 rpms EAGLE rods KB pistons 12.1 comp.

[This message has been edited by 21racer (edited January 03, 2005).]

bbracer17
Dirt Freak

Total posts: 278
posted January 03, 2005 08:10 PM  
I know of several people running the 350 Scat crank no problems at all, there is even a lightweight 48 lb Scat cast crank and everyone I know that has one has had good luck. I have read that a few of the 383 cranks break but I don't know this first hand I have only read it.

ryan
Dirt Forum Champ
Total posts: 776
posted January 03, 2005 08:47 PM  
I have run the same 3.48 Scat crank for 2 years in a 11to 1 street stock and still going strong (so far)don't think it was a 9000 series. When I got the crank back from being balanced it weighed 46lbs on a couple different scales so I don't know if we got a lighter crank than usaual or what. What does a regular scat crank weigh?

[This message has been edited by ryan (edited January 03, 2005).]

backofpack
Dirt Maniac

Total posts: 102
posted January 04, 2005 01:29 PM  
52 to 54 pds i think

Dirt-Tracker
Dirt Maniac

Total posts: 182
posted January 04, 2005 08:30 PM  
I have had a Eagle cast steel crank in my Ford 347 for 4 yrs. I do have to replace this year do to my balancer spinning and bending the end....no cracks though.

Dirt-Tracker
Dirt Maniac

Total posts: 182
posted January 04, 2005 08:32 PM  
Whats the difference between Cast Steel and nodular iron? See alot of nodular iron cranks on Ebay for little to nothing that claim handling 600 HP!!! Just curious.....

rico 08
Dirt Forum Champ
Total posts: 1139
posted January 06, 2005 06:40 AM  
Friend of mine broke one it's a 9000 series 383, it broke between #4 and #5,i bought an old turned down 400 crank for my 383 for this year.

stockcar5
Dirt Forum Champ
Total posts: 578
posted January 06, 2005 04:15 PM  
cast steel IS nodular iron. i think they like to call it cast steel cause it sounds better!

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Dirt-Tracker
Dirt Maniac

Total posts: 182
posted January 08, 2005 09:44 AM  
Thats what I thought, thanks.

droper23
Dirt Freak

Total posts: 233
posted January 10, 2005 04:15 PM  
I had a 4340 Eagle 350 crank that broke after one season. I really think it sometimes just boils down to being lucky and getting a good crank. We are going to run a Scat 9000 this year, that way if it breaks we have a whole lot less money than with the 4340.

rpm20
Dirt Freak

Total posts: 338
posted January 10, 2005 05:06 PM  
I RUN A SCAT 9000 IN A 383 AND HAVE 3 SEASONS ON IT WITH NO TROUBLE, HAVE NEVER HAD A PROBLEM WITH ANY SCAT CRANK I EVER RAN.

stockcar5
Dirt Forum Champ
Total posts: 578
posted January 10, 2005 05:34 PM  
just talked to a friend of mine who took his scat 383 crank out after 3 nights so he coould build a 400 and it was cracked on a rod journal already! was turned about 6800rpm in a stockcar.

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krace72
Dirt Roller

Total posts: 16
posted January 10, 2005 06:10 PM  
I would definitely agree with stockcar5.The callies dragon slayer is not much more and I know if treated right will last.I think you can get 1 for a little over $700.Put 2 scat in an pay for itself.The way I look at it you may want to go up in class and the callies is a great crankshaft for the money.So I always buy for the future.My opinion only!!Learned from mistakes.race engineering advertises $767.00

jakedawg23
Dirt Full Roller

Total posts: 43
posted January 11, 2005 07:25 PM  
I ran a scat crank in my 383 last year and this year at 6000, 10:1, I paid like $160 for it new, but I dont want to sound mean, but I dont plan to twist it to 7500 and 13.5 then complain when it breaks, you get what you pay for, My opinion.

outlaw#03
Dirt Roller

Total posts: 25
posted January 12, 2005 07:39 PM  
I would go with the Callies.... AMERICAN MADE!!
Supporting America is important to me!!

hobby10k
Dirt Freak

Total posts: 226
posted January 13, 2005 01:45 AM  
Go with the Callies, heck a scat 9000 would be an upgrade for me LOL But from what I hear and what I read a 9000 is a pretty darn good Crank.

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LIVE RACING, WHAT ELSE IT THERE?

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted January 13, 2005 08:31 AM  
The only problem with putting a callies in my motor is that you have to have a stock appearing crank flange, which callies told me over the phone if they put it back on a crank for me it would be a biotch to balance..

Ego Racing
Dirt Forum Champ
Total posts: 724
posted January 19, 2005 05:40 PM  
We ran on in a mod this year without a problem and it checked OK for our rebuild. This is our 5th scat crank. 4 have had no problems and we kept all under 6500. The one that did let go did in a motor where the rear of the car got lifted and it went over 7500. I also had a Callies and a Lunati let go this year in our late model and both were under 7500. I think it is almost pot luck on any crank and just left up to machine work and checking.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted January 20, 2005 05:57 AM  
I think sometimes people are scared to turn rpms and they end up lugging the engine instead of winging it a little tighter. I feel it is much harder on an engine to lug it hard at a lower rpm than it is too turn the rpm up a little and not lug it so much or at all. Now that doesnt mean go crazy with rpms but its just something to keep in mind. If you have an engine with a cam that makes power at 7500 but you only turn 6500 then you are prob lugging it. Recam to move your power down to or just under your highest comfortable rpm and that will make a difference.
just my opinion though...

[This message has been edited by dirtbuster (edited January 20, 2005).]

LATE MODEL 9W
Dirt Full Roller

Total posts: 66
posted January 21, 2005 10:08 AM  
I ran them for years with no problems. If anyone is interested I have a scat 9000 crank at 3.48 stroke, a set of I beam scat 6" rods and Keith Black pistons for sale for 300. Was ran in our sportsman car. We now run UMP mods, so you know the motor bills went up!

NJantz
Dirt Forum Champ
Total posts: 755
posted January 26, 2005 08:13 AM  
I ran one for 25 nights then sold the engine. Turned 6800, 10:1 compression, not sure on the horsepower. Never any problems.

mekomod51
Dirt Full Roller

Total posts: 42
posted January 26, 2005 06:50 PM  
I have bad luck with the SCat lightweight stuff lots of crack issues.

But whats more telling to me is all the trouble a lot racers have mentioned on here about the wrist pins pulling out of the cast pistons sounds like its worth the bucks to buy forged.

I am starting out the season with a cast speed-pro piston, stock cast crank motor.

I am not near as worried about the crank as I am the pistons

hughes
Dirt Maniac

Total posts: 194
posted January 26, 2005 09:25 PM  
As far as the cranks, there are only three crank manufacturers in China. And keeping that in mind, Elgin, Scat, Prowler and Eagle are all out of the same facility. And probably any other low priced forein crank on the market. There will be casting letters on one of the counter weights that represents the facility in which it was produced, I think one on the factories has a "LS" casting.

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