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Underbody braces, turbos and more!

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 Post subject: Vitara pistons ?
PostPosted: Tue Oct 11, 2016 8:44 pm 
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Joined: Tue Jul 01, 2008 9:46 pm
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Location: Great Falls ,Mt.
Will these work in a G13B with a 75MM overbore ? What would the compression ratio end up at ?
http://www.ebay.com/itm/191761498016?_t ... EBIDX%3AIT


Ken.............


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 Post subject: Re: Vitara pistons ?
PostPosted: Tue Oct 11, 2016 10:30 pm 
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Location: Ontario, Canada
Poor choice even for a turbo application. Compression is too low

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 Post subject: Re: Vitara pistons ?
PostPosted: Tue Oct 11, 2016 11:24 pm 
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What would you recommend that don't cost an arm and a leg ? I do want to turbo but only 8-10 pounds.


Ken..........


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 Post subject: Re: Vitara pistons ?
PostPosted: Wed Oct 12, 2016 5:07 pm 
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Does it have to be 75mm? If 74.5 will do, then these (or equivalent)

http://www.ebay.ca/itm/GM-Car-1-3LSOHC- ... r4&vxp=mtr

Available in .020" oversize which is 74.5 mm

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 Post subject: Re: Vitara pistons ?
PostPosted: Wed Oct 12, 2016 8:38 pm 
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91 ragtop wrote:
Will these work in a G13B with a 75MM overbore ? What would the compression ratio end up at ?
http://www.ebay.com/itm/191761498016?_t ... EBIDX%3AIT


Ken.............


Depending on the dish of the piston, between 7.3-7.9:1. Pretty low.

viewtopic.php?t=24954

I've read somewhere people shaving the block 1mm to raise the compression while using vitara pistons. Because that's the distance the vitara pistons keep from reaching the top of the block.

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1991-GTi: JE 75mm 11:1 pistons,Ported head, Single UD pulley (OCC),Sandros chip,Aluminium flywheel,3tech 222/365 cams, Cultus headers,Cultus IM,50mm tb,Crane cams adjustable cam gears,Apex suspension, 4.39fd GB.
1989-GTi: 3Tech 210/340 Cams,Cultus IM, B&G springs, TD04L turbo, Apexi SAFC, Suzukird UD pulley, Circuitse7en dual boost controller, AEM wideband, AEM water / meth injection kit, HKS bov.
2001-Altezza AS200: Stock.-sold
2003-EVO7 GT-A
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