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Old 11-12-2016, 08:37 PM   #1
TCX
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Default Cosworth Billet Crank?

Wondering if the cosworth billet crank is worth it vs. a manley or k1?
I've read somewhere on here that arrow makes the cosworth cranks, is that true?
Is the cosworth that much stronger or better balanced to justify the price difference?
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Old 11-13-2016, 12:14 AM   #2
Zee Biker
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Why are you wanting a billet crank?
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Old 11-13-2016, 12:27 AM   #3
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Quote:
Originally Posted by Zee Biker View Post
Why are you wanting a billet crank?
700whp build
Outfront v3 closed deck block
Manley i beam rods
Je 8.5:1 pistons
Ferrea Valvetrain
Kelford 272 cams etc

I understand the stock sti crank is good up to a lot of hp
But i want to be able to take full advantage of the build and spin it at higher rpm than the stock crank is able to
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Old 11-13-2016, 02:43 AM   #4
Juice66
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If you're wanting a billet crank, I'd go with the Manley
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Old 11-13-2016, 07:10 AM   #5
lordsanointed
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So many 700whp solid build with sti crank. Think about it.
If you gonna buy a billet crank, Manley is a good choice. The Arrow is the lighter one, but very expensive. The cossie one, more expensive and the same thing. You pay for the name.

e.
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Old 11-13-2016, 10:33 AM   #6
KillerBMotorsport
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I like the Manley and it's worked well into the +700whp range. Verified and not even needing to be touched at rebuilds so far. If you want to go an extra step, I'd recommend polishing or REM finishing (we did REM).

Going billet it more than just about the strength. There is also a significant rotational weight savings. For me, it was more about the advantages in oiling that it offers.
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Old 11-13-2016, 11:36 AM   #7
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Quote:
Originally Posted by KillerBMotorsport View Post
I like the Manley and it's worked well into the +700whp range. Verified and not even needing to be touched at rebuilds so far. If you want to go an extra step, I'd recommend polishing or REM finishing (we did REM).

Going billet it more than just about the strength. There is also a significant rotational weight savings. For me, it was more about the advantages in oiling that it offers.
The oiling was a big reason for the choice as well
How much was it for the REM?
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Old 11-13-2016, 12:31 PM   #8
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Quote:
Originally Posted by lordsanointed View Post
So many 700whp solid build with sti crank. Think about it.
If you gonna buy a billet crank, Manley is a good choice. The Arrow is the lighter one, but very expensive. The cossie one, more expensive and the same thing. You pay for the name.

e.
The only reason I ask about the cossie is we sell them at work so I get a somewhat decent deal making it not completely out of reach compared to a without a discount
So if it's the same unit as an Arrow crank it'd seem like the better choice? At least with the reviews on arrow crankshafts

(Part # for the cossie crank I can get for reference 20002315)
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Old 11-13-2016, 01:55 PM   #9
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Id get the Manley and spend the extra money for balancing and some treatment like KB said...R.E.M., WPC etc.
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Old 11-13-2016, 02:29 PM   #10
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Quote:
Originally Posted by Paul View Post
Id get the Manley and spend the extra money for balancing and some treatment like KB said...R.E.M., WPC etc.
The cossie come with isf from the factory as well
Im looking at $1300 for the manley vs 1700 for the cossie
After balance and rem the manley would be somewhat close to 1700 wouldnt it? But if itd be the better unit after that then ill probably do that
Just looking at good pros and cons for the 2
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Old 11-13-2016, 02:39 PM   #11
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Didn't think the cossy would be that cheap.....kinda your call but I bet it's kinda a wash either way.
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Old 11-13-2016, 03:33 PM   #12
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I have this crank, been very happy with it throughout all my motors, and it is in fact lighter than stock

there is one catch, it takes larger ARP bolts to mount the flywheel, so the holes have to be bored out

Right now I have Mahley billet crank in my ongoing build, looks good, oiling in right places, but I forgot to weight it
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Old 11-13-2016, 04:13 PM   #13
lordsanointed
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Default Cosworth Billet Crank?

Quote:
Originally Posted by TCX View Post
The only reason I ask about the cossie is we sell them at work so I get a somewhat decent deal making it not completely out of reach compared to a without a discount
So if it's the same unit as an Arrow crank it'd seem like the better choice? At least with the reviews on arrow crankshafts

(Part # for the cossie crank I can get for reference 20002315)

For that price(1700), choose the lighter one: Cossie/Arrow.
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Old 11-13-2016, 04:15 PM   #14
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Quote:
Originally Posted by lordsanointed View Post
For that price(1, choose the lighter one: Cossie/Arrow.
It seems like the better choice
And having isf from the factory is nice as well
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Old 11-14-2016, 10:44 AM   #15
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Quote:
Originally Posted by TCX View Post
It seems like the better choice
And having isf from the factory is nice as well
I choose this crank as well. See report starting at Post #17

http://forums.nasioc.com/forums/show....php?t=2307330
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