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Old 07-31-2014, 11:51 AM   #1
jl-wrx
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Default Arrow precision or k1 79mm crank

What would be the best crankshaft between the arrow and k1 crank, that can supply enough oil to the bearing to rev to 8 thousand rpm? What I have found from searching is that arrow makes crank for cosworth and roger clark
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Old 07-31-2014, 12:39 PM   #2
calebtharrell
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Arrow makes the better crank of the two.
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Old 07-31-2014, 06:45 PM   #3
user1029
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HTA86, Meth, 272s, Cos IM

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OEM heat treated crank? Cost 10x less, I'm revving to 8k
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Old 08-01-2014, 08:10 PM   #4
Crystal_Imprezav
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Arrow or Manley have the lightweight design and cross drilled mains you want. Dont believe k1 has that and is def the heavier of the options.
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Old 08-01-2014, 08:42 PM   #5
DisoDisp
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Pleased with the manley, the arrows cost too much...
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Old 08-01-2014, 09:56 PM   #6
fastblueufo
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02 billet crank
pauter rods, pt5857, E85

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Manley all the way.
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Old 08-01-2014, 10:06 PM   #7
Razgeiz
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On the arrow and Manley cranks does each rod bearing get fed by a separate main or do 2 and 3 still sharing an oil feed? That's my main concern other than that OEM I wouldn't worry about at 8k

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Old 08-01-2014, 11:09 PM   #8
BraveSTi
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How about you look up induction-hardening, nitriding, etc and make your own decision based off of research
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Old 08-02-2014, 07:43 AM   #9
alakazoo22
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Off topic..

What is the advantage to get lightweight crank and when you need it ???
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Old 08-02-2014, 08:03 AM   #10
jl-wrx
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Manley crank are ****, there was an thread on here saying the crank were way out of balance.
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Old 08-02-2014, 09:02 AM   #11
mboulton
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Quote:
Originally Posted by jl-wrx View Post
Manley crank are ****, there was an thread on here saying the crank were way out of balance.
Those were the older versions. The current ones are high quality and very effective. I am using one now without problems and have a second one for a build on my workbench currently.


I see no reason why someone wouldn't use a Manley crank if they want to step outside of OEM cranks.

Mel
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Old 08-02-2014, 01:49 PM   #12
jl-wrx
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Quote:
Originally Posted by mboulton View Post
Those were the older versions. The current ones are high quality and very effective. I am using one now without problems and have a second one for a build on my workbench currently.


I see no reason why someone wouldn't use a Manley crank if they want to step outside of OEM cranks.

Mel
I got the old version of the manley crank brand new still in the box not sure if I want to use it, i'll be to scared to use it. I will never buy a manley product again
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Old 08-02-2014, 03:27 PM   #13
user1029
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Quote:
Originally Posted by jl-wrx View Post
Manley crank are ****, there was an thread on here saying the crank were way out of balance.
yeah IAG has snapped their 2.7L stroker old crank. They have undergone revision since then and have become a lot more stout
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Old 08-02-2014, 04:41 PM   #14
mboulton
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Quote:
Originally Posted by jl-wrx View Post
I got the old version of the manley crank brand new still in the box not sure if I want to use it, i'll be to scared to use it. I will never buy a manley product again



I also have a version 1 of the 95mm crank. I would readily use it after checking the balance first. Not planning a destroked motor any longer.

Mel


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