f5a -f8 pistons

MightyBoy tech questions and answers.
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killaN/A
Posts: 4
Joined: Mon Jun 29, 2015 11:11 pm
Location: perth

Has anyone put f8b pistons in a f5a block or know if this has been done before?
or are there any other pistons that fit in a f5a block
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Tez
Posts: 1176
Joined: Wed Sep 03, 2008 9:38 pm
Location: Croydon, Vic

Ummmm....
F5a pistons are (standard) 61.960 - 61.975mm
F8b pistons are (standard) 68.450 - 68.475mm

Don't think they're gonna fit... :NFI:
Tez
So the adventure continues...
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Brayden
Posts: 9101
Joined: Sun Apr 11, 2004 3:09 am
Location: Canberra ACT
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Most blocks can be bored out a millimeter or two max, I'm not sure about seven!
F8B EFI turbo - Three pots and a snail.
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BusBoy
Posts: 14
Joined: Mon Dec 23, 2013 1:07 am
Location: Brisbane-ish

Try comparing them to motorcycle pistons and see if you can find a match?
Probably your best bet for finding suitable small Pistons if you can't source any specifically for the F5A
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rf4burns
Posts: 162
Joined: Fri Sep 03, 2010 7:26 pm
Location: Central QLD

As per BUSBOY a 125cc suzuki motorcycle engine is about 62mm bore you can get these from china for about $20-$40 each with rings ; i dont know the other dimensions which would need to be checked (pin diameter, pin center to top of piston etc...see link below for an exmaple that has dimensions) but this maybe an option

http://www.aliexpress.com/item/Aluminum ... 57822.html
Get with it ,Get over it ,Get on with it .....OR LEAVE
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