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Old 09-05-2010, 11:50 PM   #1
project_skyline
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Default Crank recommendations: 8000+rpm/700+whp

Alright so I wanted to see what everyone thinks is a good crank to run for a car that will be running higher rpms and high horsepower. Probably 8500-9000rpm wet sump system and 2.5L

The most important thing is strength and oiling.

Price is a factor as well.

If you think the stock one is good, list any modification you would do for making it reliable for the above.

Thanks!
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Old 09-06-2010, 12:02 AM   #2
john 1badSTI
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either stock with a modded oil pump and bigger pan or a manley billet with the same mods.Either crank will do the job --stock crank=350.00 manley billet 1200.00 you choose.
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Old 09-06-2010, 11:25 AM   #3
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so you're aiming for 700+ on a 2.5L and price is a factor?...ok

in that case, get a billet or don't plan to spin much past 8k on the stock crank. You will want to make sure you have the clearances on the main and rod bearings just right.
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Old 09-06-2010, 01:21 PM   #4
project_skyline
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Quote:
Originally Posted by Homemade WRX View Post
so you're aiming for 700+ on a 2.5L and price is a factor?...ok

in that case, get a billet or don't plan to spin much past 8k on the stock crank. You will want to make sure you have the clearances on the main and rod bearings just right.
Lol its a factor but that doesn't mean its an issue!

What billet crank would you suggest?
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Old 09-06-2010, 02:11 PM   #5
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Arrow and Cosworth are the 2 best IMO.. The Manely one is a nice piece as well. I will be running the Manely in my spare short block along with all the other parts they offer. PM me if you want more info on it.

Jr
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Old 09-06-2010, 02:18 PM   #6
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I will be running an OEM crankshaft in my build with a P&L modified oil pump. Looking at 8500RPM to a maximum of 9000RPM. Looking I've been reading that the OEM crank can take a lot of punishment before you have any issues. Capable of prob about 700hp.

When I was looking for parts for my build, I was told by AMS that they offer three options for cranks: OEM, Manley and K1. Manley and K1 both make a solid product that are both roughly $1500. I can't really justify buying a cosworth crank and spending that kind of money when you could get something as good for half the price.

Manley: http://www.maperformance.com/manley-...ke-190040.html

K1: http://www.bigvalleyperformance.com/...20%7B47%7DEJ25
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Old 09-06-2010, 10:28 PM   #7
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Arrow would be my first vote because of how they route the oil through the crank.

All the rest are pretty much the same layout 'direct shot', 'straight shot', yada yada

...never really handled or looked into a cossie crank.
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Old 09-06-2010, 10:36 PM   #8
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Quote:
Originally Posted by Homemade WRX View Post
Arrow would be my first vote because of how they route the oil through the crank.

All the rest are pretty much the same layout 'direct shot', 'straight shot', yada yada

...never really handled or looked into a cossie crank.
Arrow and Cosworth look exactly the same.. I mean identical!
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Old 09-07-2010, 09:21 AM   #9
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Quote:
Originally Posted by Junior2JZ View Post
Arrow and Cosworth look exactly the same.. I mean identical!
Could Arrow be the manufacturer of Cossie Cranks?? I have one though..
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Old 09-07-2010, 10:47 AM   #10
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Quote:
Originally Posted by stroker_ View Post
Could Arrow be the manufacturer of Cossie Cranks?? I have one though..
they were for Cobb's billet cranks, so it wouldn't surprise me.
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Old 09-07-2010, 04:37 PM   #11
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Yes arrow makes cosworths cranks. It has the same
oiling set up as the arrow design. Very nice piece but for the
money I want the new 83mm Manley crank for $1200.

Last edited by Texy32; 09-07-2010 at 04:43 PM.
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Old 09-09-2010, 10:10 PM   #12
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Manley's crank has the same cross drilled oiling system as the Cosworth/Arrow for about 1/3 the cost. They are by far the best crank available for the money.
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Old 09-09-2010, 10:44 PM   #13
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Quote:
Originally Posted by Texy32 View Post
Yes arrow makes cosworths cranks. It has the same
oiling set up as the arrow design. Very nice piece but for the
money I want the new 83mm Manley crank for $1200.


Quote:
Originally Posted by RacePartsGuy View Post
Manley's crank has the same cross drilled oiling system as the Cosworth/Arrow for about 1/3 the cost. They are by far the best crank available for the money.
RacePartsGuy speaks the truth. I spoke with my Manley man today.. he confirmed it.
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Old 09-09-2010, 11:34 PM   #14
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Quote:
Originally Posted by RacePartsGuy View Post
Manley's crank has the same cross drilled oiling system as the Cosworth/Arrow for about 1/3 the cost. They are by far the best crank available for the money.
proof is needed!! are you sure it isn't just a straight shot like the BC setups?
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Old 09-09-2010, 11:39 PM   #15
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Quote:
Originally Posted by Homemade WRX View Post
proof is needed!! are you sure it isn't just a straight shot like the BC setups?
Mr. Homemade, I can arrange to have both cranks side by side.. Any particular shots you want?
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Old 09-10-2010, 01:02 AM   #16
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Teh Money Shot.
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Old 09-10-2010, 11:03 AM   #17
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I think he wants the pictures that show the oil galleries exactly the same in both cranks at the same view.
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Old 09-10-2010, 02:26 PM   #18
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Quote:
Originally Posted by Junior2JZ View Post
Mr. Homemade, I can arrange to have both cranks side by side.. Any particular shots you want?
I'm just stoked that they are doing it the right way at an 'affordable' cost.

The original arrow design doesn't send the oil across the main journals and actually runs them parallel to the crank. Requires loctiting and plugging set screws in the ends of the oil journals.

Searching for a machine drawing of it on here...I know I have it saved on one of my computers as well.
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Old 09-10-2010, 11:17 PM   #19
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Quote:
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Teh Money Shot.
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Old 09-11-2010, 02:19 AM   #20
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Quote:
Originally Posted by Homemade WRX View Post
I'm just stoked that they are doing it the right way at an 'affordable' cost.

The original arrow design doesn't send the oil across the main journals and actually runs them parallel to the crank. Requires loctiting and plugging set screws in the ends of the oil journals.

Searching for a machine drawing of it on here...I know I have it saved on one of my computers as well.
I will get you some comparison pics this week. I will Pm you for specifics.
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Old 09-11-2010, 08:50 AM   #21
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Old 09-11-2010, 01:59 PM   #22
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Quote:
Originally Posted by Junior2JZ View Post
I will get you some comparison pics this week. I will Pm you for specifics.
Awesome, I'm stoked but no rush. If you could, can you please stick straws (or something) in the oil passages? makes it easy to see where they go.
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Old 09-11-2010, 02:00 PM   #23
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Quote:
Originally Posted by bertune View Post
I've already founder better than that but none give enough detail to show what i'm looking for.
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Old 09-11-2010, 07:34 PM   #24
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Jr. let me know if you want some pics of the manley crank we have one at the shop not sure if you have one handy.

-Justin
PT
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Old 09-13-2010, 12:58 AM   #25
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So if I want to do a 500WHP maximum build I could just use a 12200AA400 stock crank?
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