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Old 02-15-2010, 08:08 AM   #1
RedSpyder
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Default Valves Compatibilty Question

I have a question. Will a 03 STI 2.0l Inlet/Exhaust valves will fit my 2.5l 07 WRX? or they change because of the 2.0l/2.5l difference ??
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Old 02-15-2010, 09:53 PM   #2
soobaviator
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Originally Posted by RedSpyder View Post
I have a question. Will a 03 STI 2.0l Inlet/Exhaust valves will fit my 2.5l 07 WRX? or they change because of the 2.0l/2.5l difference ??
Basically no, the valves are the same head and stem diameter but the lengths are different. The 2.5 valves have longer total length. It may be possible to solve this with thicker buckets, but the differences are + 2 mm on both sides.

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