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Author Topic: 131ci 4 5/8 S&S Stroker motor  (Read 1293 times)

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2019CVONH

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131ci 4 5/8 S&S Stroker motor
« on: January 24, 2021, 07:36:54 AM »

Good morning,

Has anyone built a 131 stroker using this crank? If so what were your inerds and what were you numbers like? I’m thinking of doing this to mine.


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HD Street Performance

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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #1 on: January 24, 2021, 09:01:26 AM »

Would you really when you can get either 126" or 130" depending on if you now have a 107 or 114/117 now and no crank needs to be purchased?
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2019CVONH

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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #2 on: January 24, 2021, 09:06:28 AM »

I need to redo the bottoms end because the cam side is at .010 runout. So I have to replace the crank anyway. So to be able to change some things up and get more cubic inch I can stroke it and get even more without stressing the motor with thin sidewalls and sleeve issues.


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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #3 on: January 24, 2021, 09:37:06 AM »

If it were mine I would have the crank fixed or buy a P3R. I prefer less stroke and larger bore. The spigots and the main liner are not thin. S&S cylinders bored +.030 OS.
https://www.facebook.com/P3R-Flywheels-1395670874091175/
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2019CVONH

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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #4 on: January 24, 2021, 10:58:53 AM »

I don’t have a Twincam it’s an M8


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HD Street Performance

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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #5 on: January 24, 2021, 12:08:51 PM »

P3R makes cranks for both, any stroke you want., carrillo USA rods. Plus Darkhorse and Hyperformance, Randy Torgeson, are reworking the stock cranks for the M8
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2019CVONH

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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #6 on: January 24, 2021, 05:59:18 PM »

Wish I knew that before I sent it out. It’s getting an S&S pinned and pressed balanced removed


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2019CVONH

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Re: 131ci 4 5/8 S&S Stroker motor
« Reply #7 on: January 24, 2021, 06:07:52 PM »

If it were mine I would have the crank fixed or buy a P3R. I prefer less stroke and larger bore. The spigots and the main liner are not thin. S&S cylinders bored +.030 OS.
https://www.facebook.com/P3R-Flywheels-1395670874091175/
Wow I went to the Facebook site. That crank is a polished work of art! Very nice indeed.


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