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Hi Compression N/A motor 

 

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 Post subject: Hi Compression N/A motor
Posted: Fri Aug 19, 2011 7:55 pm 
Parts Gopher
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Age: 32

Posts: 55

Joined: 5th Apr 2011

Ride: 1996 EFII Gli OLympic Classic

Location: Perth
WA, Australia

Hi All,

I have an EF GLi and while the idea of boost sounds fantastic I'd like to do something else 8-) A quick look through the forum using the search function revealed precious little on the subject of a High Compression N/A I6.

Would would I need to achieve at least a 10:1 Compression ratio? Shave the head & the block? Au Head gasket? Is there longer rods and domed pistons available for this motor?

Any info that anyone has would be very much appreciated :)

PS: I'm new to all this so be gentle :P
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 Post subject: Re: Hi Compression N/A motor
Posted: Fri Aug 19, 2011 8:03 pm 
Getting Side Ways
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Age: 30

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Joined: 15th Apr 2009

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Ride: 2013 Ford Focus ST

Power: 175 rwkw

Location: North West Sydney
NSW, Australia

Hey mate

Have a chat with this bloke, he is trying to make the most powerful NA and has been doing all kinds of things with compression. He has a decent build thread on AFF as well

the-garage-f53/trav199-bf-n-a-xr6-330rwhp-t99170.html

Cheers
Phil

 

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New Build Thread
the-garage-f53/the-beast-v2-0-phil-s-2013-ford-focus-st-t122703.html

Old Build Thread
the-garage-f53/phil-s-bf-sr-gt-build-thread-lots-of-pics-t98705.html

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 Post subject: Re: Hi Compression N/A motor
Posted: Sun Aug 21, 2011 3:22 pm 
Parts Gopher
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Age: 32

Posts: 55

Joined: 5th Apr 2011

Ride: 1996 EFII Gli OLympic Classic

Location: Perth
WA, Australia

Cheers for that Phil :D Nice to know someone else has/is going that route :)
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 Post subject: Re: Hi Compression N/A motor
Posted: Sun Aug 21, 2011 11:34 pm 
Getting Side Ways
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Age: 30

Posts: 1149

Joined: 15th Apr 2009

Gallery: 22 images

Ride: 2013 Ford Focus ST

Power: 175 rwkw

Location: North West Sydney
NSW, Australia

No worries mate, he is a good bloke and im sure would be happy to answer any questions

 

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New Build Thread
the-garage-f53/the-beast-v2-0-phil-s-2013-ford-focus-st-t122703.html

Old Build Thread
the-garage-f53/phil-s-bf-sr-gt-build-thread-lots-of-pics-t98705.html

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 Post subject: Re: Hi Compression N/A motor
Posted: Sun Aug 21, 2011 11:51 pm 
NSW Cruise Moderator
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NSW, Australia

you don't want to make the stroke any longer, its already long on these motors, some lumpy tops butterfly cut to suit shave the head not the block, go too far and you will run into chain slap issues though. This will get the comp up. depends how far you want to go.

Cam and head work will complement it or destroy it.

 

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