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Old 05-28-2003, 06:45   #1 (permalink)
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rocker ratio

can anyone tell me what ratio the roller rockers are on the au2 xr8 is it 1.6 or 1.7, thanks.
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Old 05-28-2003, 06:49   #2 (permalink)
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the gear box mods you guys are on about sound interesting are they any good for an au1 xr8?
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Old 05-28-2003, 13:59   #3 (permalink)
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To measure the ratio of a rocker its the 'Larger side of the rocker divided by the smaller side of the rocker'. Does this make sense?..

But to answer your question, im not sure exactly, but most ratios are between 1.5 and 1.7.

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Old 05-28-2003, 14:57   #4 (permalink)
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Fairly sure it's 1.71
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Old 05-28-2003, 16:32   #5 (permalink)
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The the old days (EB) they had 1.6 to 1. Only the Sprint had 1.7..
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Old 05-28-2003, 18:35   #6 (permalink)
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Guaranteed 1.7 if it's a 220.

99.5% sure it's 1.7 for the 200.
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Old 05-29-2003, 03:49   #7 (permalink)
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thanks fellas, so thats where the 200kw gets its extra grunt over the 185kw i gather (and the air intake) so its 1.7's for me then!
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