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06-07-2013, 09:58 PM | #1 |
Scooby Newbie
Member#: 315068
Join Date: Mar 2012
Location: Montana
Vehicle:2005 wrx PSM |
2.5 heads on a 2.0 block.
So I have the opportunity to get my hands on a set of 2.5 heads. Has anyone put them on a 2.0 block? Kind of interested in the head ache it might cause.
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06-08-2013, 01:29 AM | #2 |
Scooby Newbie
Member#: 324962
Join Date: Jul 2012
Chapter/Region:
BAIC
Location: Morgan Hill CA.
Vehicle:02 WRX |
It would probably lower compression. 2.0 heads work on a 2.5 because you can machine them out, you cant go the other way.
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01-24-2014, 01:13 PM | #3 |
Scooby Specialist
Member#: 117980
Join Date: Jun 2006
Chapter/Region:
NESIC
Location: Rochester, NH
Vehicle:2005 sti wr blue |
Will not work because the chamber is too wide on the 2.5 head compared to the 2.0 block and the head gaskets will not seal properly
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01-24-2014, 02:21 PM | #4 |
Scooby Specialist
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NWIC
Location: Belgrade Montana
Vehicle:2011 WRX Premium Satin Pearl White |
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01-24-2014, 02:26 PM | #5 |
Scooby Newbie
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Location: Connecticut
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01-24-2014, 02:44 PM | #6 |
Scooby Specialist
Member#: 270426
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NWIC
Location: Belgrade Montana
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01-24-2014, 03:06 PM | #7 |
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SWIC
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Vehicle:2007 STi CGM |
Stay away from any tuners that encourage this setup
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01-24-2014, 07:42 PM | #8 |
Scooby Newbie
Member#: 379585
Join Date: Jan 2014
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You would need to do 1 of the following to properly make a hybrid. JE FSR hybrid pistons, designed for 2.5 sb with 2.0 heads. Or you can machine the heads to match the sb
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01-24-2014, 07:43 PM | #9 |
Scooby Newbie
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Join Date: Jan 2014
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01-29-2014, 12:55 PM | #10 |
Scooby Newbie
Member#: 337954
Join Date: Nov 2012
Location: kansas
Vehicle:05 sti black |
if u wanna sell these heads let me know
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08-03-2020, 02:46 PM | #11 |
Scooby Newbie
Member#: 517265
Join Date: Aug 2020
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08-03-2020, 09:46 PM | #12 |
NASIOC Supporter
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Tri-State
Location: Cold in winter, hot in summer
Vehicle:GDA- D, GDA-A, VAG-A GDA-A - ShinjiTuned |
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09-01-2023, 05:40 AM | #13 |
Scooby Newbie
Member#: 535369
Join Date: Aug 2023
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