OS 91 SZ H ? - HeliFreak
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Old 11-27-2011, 06:18 PM   #1 (permalink)
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Default OS 91 SZ H ?

Anyone know anything about the OS 91 SZ H ? I heard some of the older os engines had a problem with fuel delivery in hard 3d. I also heard they made an after thought fuel pump for them. Is that true? I have an opportunity to trade for one but not sure if its worth it. Could use some good input.
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