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Walker |
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What rocker arms are the GT40P running as standard?
Shaft, pedestal etc? I haven't played with these things before so i have no idea, can't be stuffed taking the cover off to see. Instead of changing cam i'm thinking of just bolting on 1.7 ratio rockers and see what i get out of it. |
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Free347 |
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All pedestal mount. Pressed 1.6 in the lower spec AUs however I believe the later Tickford cars had rollers (mostly 1.6 but some 1.7).
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offyaguts |
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i think general rule of thumb paul for an upgrade in roller rockers yields around 15hp
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fairy v8 |
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when the au,s went to 200kw from 185 was when they added 1.7rr i fitted these to my 185 a while back but if your gonna rev it the stock springs cant hack it mine started to valve bounce at about 5000rpm, ive got it in bits aty the moment putting doublesprings in it, it only had 85k,s on it to
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xr8ute |
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{USERNAME} wrote: when the au,s went to 200kw from 185 was when they added 1.7rr
Actually the 200kw motors had the Crane (aka FMS) 1.6:1 rockers, and the 220's had the 1.72:1 Yella Terra rockers. |
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