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914World.com _ FS/WTB: 914 Parts _ SOLD: 66mm cw crank StdStd polished

Posted by: BillJ Mar 29 2023, 07:05 AM

Have a 66mm cw std/std crank fresh from machine shop for your 6 cylinder project. $2800


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Posted by: brant Mar 29 2023, 03:00 PM

beautiful part...
I"ve bought a few of them in the last few decades...
I didn't know they had gone up so much...

are you running the 70.4 crank in the new motor?

brant

Posted by: BillJ Mar 29 2023, 06:46 PM

Yes we decided to go with the longer crank to provide a larger sweet spot for torque. The 66 gives a relatively short and high rev band, which is cool, but you have to keep it in that sweet spot or you are bogged down. Anything below 5k you are cooked. This is just as it applies to race engines thiugh of course.

Will move the powerband to the left with the longer crank. It did require me to have custom ps and cs made though. Would have been easier with the 66.


Posted by: targa72e Mar 29 2023, 10:45 PM

STD.STD 50 plus year old cranks are getting hard to find. If you need to have one worked on , magged, ground, re-hardened, straighten, plus shipping it starts to gets expensive. My last crank to have similar work was $1500 in labor plus $200 in shipping when done. A while back I was looking for a 74.4 crank and purchase three that did not pass mag, by the time I got a good one the overall cost it was quire expensive.

john

Posted by: brant Mar 30 2023, 08:53 AM

QUOTE(BillJ @ Mar 29 2023, 06:46 PM) *

Yes we decided to go with the longer crank to provide a larger sweet spot for torque. The 66 gives a relatively short and high rev band, which is cool, but you have to keep it in that sweet spot or you are bogged down. Anything below 5k you are cooked. This is just as it applies to race engines thiugh of course.

Will move the powerband to the left with the longer crank. It did require me to have custom ps and cs made though. Would have been easier with the 66.



I hear ya...
not much torque from my motor.

with the 66 crank, and 5.5 inch clutch..
its even tough to get rolling in the pits with the "F" gear in 1st position

we ended up with a pretty special trans and gearing to make sure its always in the powerband.

Posted by: BillJ Mar 30 2023, 08:57 AM

Yes for.sure. i have a 904 mainshaft waiting in the wings so i can build a second box. Need a 901/911 (reverse pull) side shift box to build out. Have MSX in the current box.

Posted by: brant Mar 30 2023, 12:35 PM

loved the Ka, S, X we used to run in a 4cylinder race car

this box is F, J, O, S, V
and always provides the perfect gearing for long and short tracks with my tiny 2.0

Posted by: BillJ Mar 30 2023, 01:49 PM

Tiny. Lol. Sure.

Posted by: BillJ Apr 11 2023, 09:08 AM

Bump

Posted by: BillJ Apr 27 2023, 12:00 PM

Bump.

Posted by: BillJ May 3 2023, 11:12 AM

Bump

Posted by: BillJ May 19 2023, 02:19 PM

Bump

Posted by: BillJ Jun 4 2023, 11:07 PM

Available

Posted by: BillJ Jul 7 2023, 12:35 PM

Sold

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