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De stroked Crankshaft 

 

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 Post subject: De stroked Crankshaft
Posted: Tue Jul 26, 2016 6:49 pm 
Fordmods Newbie
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Age: 48

Posts: 1

Joined: 26th Jul 2016

Ride: Ford Capri

Location: Lawnton
QLD, Australia

Hi Is there anyone who has or can do a de-stroked crankshaft for the I6.
I need one destroked to 3.6 so i can get it past qld transport.
Any and all help appreciated
Stephen
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 Post subject: Re: De stroked Crankshaft
Posted: Wed Aug 17, 2016 10:42 pm 
Oompa Loompa
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Joined: 20th Apr 2013

Ride: 2006 BF RTV

Location: Out the back
VIC, Australia

which I6? EA's had a 3.2L but they were damn rare even 20 years ago
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 Post subject: Re: De stroked Crankshaft
Posted: Sat Aug 27, 2016 3:18 am 
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Age: 59

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Joined: 27th May 2010

Ride: Ford/Mustang 1965

Location: Hurricane, WV
Oustide Australia

If you're starting with the 4.0 which has a 3.91" stroke and 3.63" bore, you would have to decrease the stroke by 0.38" (3.53") to achieve a 3.6L displacement.

To decrease the stroke by 0.38", you would have to offset grind the crank by 0.19" (stroke = 2 x crank throw). You would then have to purchase rods with the big end 0.19" smaller in diameter than the stock 4.0 rod. Then to have the top of the piston be at the same spot at TDC (to maintain compression) the rod would have to be 0.19" longer than the stock 4.0, or the compression height of the piston would have to be 0.19" taller than the stock 4.0.

Easy. :wink:

Good luck.

 

_________________

Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
2017 BMW X3, 3.0L Turbo, 300HP, 8-Spd Auto

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 Post subject: Re: De stroked Crankshaft
Posted: Sat Aug 27, 2016 3:18 am 
Fordmods Newbie
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Age: 59

Posts: 8

Joined: 27th May 2010

Ride: Ford/Mustang 1965

Location: Hurricane, WV
Oustide Australia

Double post

 

_________________

Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
2017 BMW X3, 3.0L Turbo, 300HP, 8-Spd Auto

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