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  #1  
Old 01-05-2006, 11:17 AM
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WRX Brake booster

I am doing a 5 speed swap for a member on the board and he brought me the pedal assembly complete with master cylinders and even a brake booster. Can we use the WRX brake booster and avoid having to die the SVX one?? Just curious if there was any reason why we couldn't. Just wanted to make life easier

Tom
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  #2  
Old 01-05-2006, 02:34 PM
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pm greenmarine - if I remember right he used one from an impreza when he did his 5 speed. Actually - gotsubarus did the swap and will probably remember which one they ended up using also.
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  #3  
Old 01-05-2006, 03:56 PM
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I figured it could be used without conflict but just wanted a second opinion. I just need to weld up a new bung for the main vaccum line, the WRX is slightly different

Tom
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Old 02-06-2006, 08:29 AM
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Tom,
Did you ever confirm whether or not this works?
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Time for my very own long list of mods:
92 SVX LS-L - Ebony Pearl - 2002 WRX 5MT trans w/STi gearset (rebuilt & installed myself ) - BMW E46 HID retrofit - Kenwood Headunit - Phoenix Gold 75x4 RMS amp - Alpine Type R 6.5" front components - Alpine Type R 6x9 3way rear speakers - 18"x9" Rota G-Force wheels w/225/40ZR18 Toyo T1R's - Mychailo's custom springs - Urethane front & rear sway bar bushings - KC exhaust (2.5" dual magnaflow) - Escaine seat swap - Removed Spoiler

I don't care if Subaru says it's STI...it will always be STi to me
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Old 02-06-2006, 09:07 AM
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Yes, the 02 WRX booster did work well. No issues at all.

Tom
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  #6  
Old 02-06-2006, 11:20 AM
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This eliminates the need to cut the SVX booster?

Does it affect brake characteristics at all?
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Time for my very own long list of mods:
92 SVX LS-L - Ebony Pearl - 2002 WRX 5MT trans w/STi gearset (rebuilt & installed myself ) - BMW E46 HID retrofit - Kenwood Headunit - Phoenix Gold 75x4 RMS amp - Alpine Type R 6.5" front components - Alpine Type R 6x9 3way rear speakers - 18"x9" Rota G-Force wheels w/225/40ZR18 Toyo T1R's - Mychailo's custom springs - Urethane front & rear sway bar bushings - KC exhaust (2.5" dual magnaflow) - Escaine seat swap - Removed Spoiler

I don't care if Subaru says it's STI...it will always be STi to me
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  #7  
Old 02-06-2006, 11:40 AM
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Yes, it eliminates the need to cut and die the booster. No it has no change on the brake characteristics. I would still recommend using the SVX booster because the vaccum bung on the WRX booster is slightly different and needs to be straightened out.

Tom
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  #8  
Old 02-06-2006, 01:02 PM
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So it's easier to mod the SVX booster than it is to mod the WRX booster?
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Time for my very own long list of mods:
92 SVX LS-L - Ebony Pearl - 2002 WRX 5MT trans w/STi gearset (rebuilt & installed myself ) - BMW E46 HID retrofit - Kenwood Headunit - Phoenix Gold 75x4 RMS amp - Alpine Type R 6.5" front components - Alpine Type R 6x9 3way rear speakers - 18"x9" Rota G-Force wheels w/225/40ZR18 Toyo T1R's - Mychailo's custom springs - Urethane front & rear sway bar bushings - KC exhaust (2.5" dual magnaflow) - Escaine seat swap - Removed Spoiler

I don't care if Subaru says it's STI...it will always be STi to me
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  #9  
Old 02-06-2006, 01:55 PM
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I think it is safer to mod the SVX booster because it is a simple task. To straighten the bung out you risk breaking it, but in that case, you might as well mod the SVX booster then. Just saves money on not buying a WRX booster

Tom
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  #10  
Old 02-06-2006, 02:27 PM
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Cool. Thanks for the help. In earlier posts it has looked like it's difficult to know how much to cut off, and that if you don't cut it right you can have some problems with the brake system. I don't want that, so I was interested in the WRX booster. But, if there's no need and modding the SVX one is easy, I'm up for it

Mat
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Time for my very own long list of mods:
92 SVX LS-L - Ebony Pearl - 2002 WRX 5MT trans w/STi gearset (rebuilt & installed myself ) - BMW E46 HID retrofit - Kenwood Headunit - Phoenix Gold 75x4 RMS amp - Alpine Type R 6.5" front components - Alpine Type R 6x9 3way rear speakers - 18"x9" Rota G-Force wheels w/225/40ZR18 Toyo T1R's - Mychailo's custom springs - Urethane front & rear sway bar bushings - KC exhaust (2.5" dual magnaflow) - Escaine seat swap - Removed Spoiler

I don't care if Subaru says it's STI...it will always be STi to me
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  #11  
Old 02-06-2006, 02:32 PM
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What i did was measured the thickness of the firewall. used shims on the back of the Booster and placed the new pedal assembly on it. this way I knew how much to cut/die

Tom
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  #12  
Old 02-07-2006, 12:06 PM
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So those of us with manual trannies that may need a new brake booster can opt for a WRX booster if it's cheaper than an SVX one.
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  #13  
Old 02-07-2006, 12:07 PM
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Depending on the peal box used

Tom
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