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Old 08-17-2013, 08:58 AM   #11
1turbofocus
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If your going to change the parts anyway why not just go with Eagle rods and forged pistons , ARP head and main studs and be done with it ?

Tom
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Old 08-19-2013, 03:38 PM   #12
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I was trying to avoid changing anything internally.
is there anything else that needs to be changed for 350HP?
what is the stock crank rating?
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Old 08-21-2013, 01:13 AM   #13
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There is no way your going to get 350hp out of a stock motor. Your basically asking to blow it up. The crank will hold up longer than the connecting rods will..
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Old 08-21-2013, 04:50 AM   #14
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high compression plus boost equals more power on lower boost levels HOWEVER its gonna go boom. im just gonna throw a number out there and say maybe 10:1 is about as high as you want to go with compression if you are boosting. somewhere in the neighborhood of 8 or 9:1 would be more desirable. much safer.

sorry i cant help with the 2013 models. i dont know jack about the newest focus

the 02-04 SVT focus can handle about 350hp on a stock engine. but that is about the limit and it also depends on how well the engine has been kept up and what shape it is currently in and then you shouldnt count on putting 100k additional miles on it at that boost level. if im not mistaken all the other engines that came in the focus between 2000 and 2010 are limited to around 250hp on a stock engine except for the crap single cam SPI engine that came in some of the first gens. i dont think they even stood up very well to the power they made stock if they could keep running long enough without dropping a valve seat.
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Old 08-21-2013, 07:29 AM   #15
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No, the internals are not the same on the ST as they are on the n/a. And while power does come more quickly with higher compression, so do peak pressures.
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Old 08-26-2013, 10:56 AM   #16
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thanks for the tips guys, after researching a bit more i think it will be safer to just change the internal components.
i was given much false info from ford dealerships so i apologize for
the noobie questions haha.
thanks again.
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