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-   Do It Yourself, Boating on a Budget (https://www.offshoreonly.com/forums/do-yourself-boating-budget-249/)
-   -   Has anyone used a scat rotating assembly for a stroker build? (https://www.offshoreonly.com/forums/do-yourself-boating-budget/358018-has-anyone-used-scat-rotating-assembly-stroker-build.html)

sutphen 30 12-09-2018 03:41 PM
Originally Posted by BUP (Post 4662907)
I would use a Crower instead of a Scat. And for surely never use a Eagle branded in any marine engine. Just saying
why?

BUP 12-09-2018 04:02 PM
Originally Posted by sutphen 30 (Post 4662919)
why?
quality for one.

And then I can ask WHY Scat ?

getrdunn 12-09-2018 04:23 PM
Price???

BillK 12-09-2018 05:43 PM
Originally Posted by f_inscreenname (Post 4662738)
Maybe the rods are heavy and all they would have to do is drill the flywheel instead of balancing all the rods
Anyone that does that should not be balancing engines. Same with drilling on a damper.

Rookie 12-09-2018 05:57 PM
There are many Scat stroker kits out there in marine builds. Keep it under 700HP and you should be fine. And always have your machine shop check the balance.

Rookie 12-09-2018 07:17 PM
Might have been misinformation. Thought we were talking about forged cranks...

mike tkach 12-09-2018 10:20 PM
i have used scat and eagle rotating assembly,s and individual parts,the eagle crank journal size was all over the place requiring mix&match bearings,the scat cranks were spot on sizewise.i would have no problem with 1000 hp with either 4340 crank&h beam rods with arp 2000 bolts but i do my best to talk people out of the eagle cranks for the mentioned reason.

f_inscreenname 12-09-2018 10:21 PM
Originally Posted by BillK (Post 4662947)
Anyone that does that should not be balancing engines. Same with drilling on a damper.
Maybe I should have explained a little more. A 427 Tall Block is internally balanced but once you stroke it with Kiekhaefer rods there is no way to internally balance it without turning the crank into Swiss cheese. To be honest about it we actually used a 454 external flywheel and drilled it because if we used a 427 neutral flywheel we would have had to add to much metal to it and that "heavy metal" is expensive.

mike tkach 12-09-2018 10:40 PM
Originally Posted by f_inscreenname (Post 4662893)
On a side note, please make sure you put your rod bearings in right when it comes to after market cranks. Make sure you don't need "narrowed" bearings.
i have never seen a stroker aftermarket crank that did not need narrowed bearings,the journal radius is bigger for added strength.on a side note i recently took a 557 apart that someone else built,it had clevite p main bearings and they were shot,luckily the crank was good with a polishing.

mike tkach 12-09-2018 10:47 PM
Originally Posted by f_inscreenname (Post 4662979)
Maybe I should have explained a little more. A 427 Tall Block is internally balanced but once you stroke it with Kiekhaefer rods there is no way to internally balance it without turning the crank into Swiss cheese. To be honest about it we actually used a 454 external flywheel and drilled it because if we used a 427 neutral flywheel we would have had to add to much metal to it and that "heavy metal" is expensive.
yes it does cost a little more to do things right but the end result makes it worth it.


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