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Originally Posted by Cranker V2 Hmmm, jusat stripped down a set of bip 916 throttle bodies. Anyone know where to get 54mm butterfly's from? |
Have you tried Chris at CJS it's one of the conversion he does
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Originally Posted by bradders seems very low for an sps looking like Mike should be ok with his 853R then
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I thought the same about the SPS
I was out on my 996BP earlier which feels like its around 115 ish, with its 54mm system and matching JHP Chip, my old 916 measured 104.5 rwbhp with 45mm Termis and Senna Chip. That compares to Superbike mag in 1994 quoting 114bhp for a bog stock one, yet my 916 felt like a real good one so maybe SB mag were quoting Crank figures.
In September 2002 the same mag did a article on the Sigma 853, which had started as a 748RS fitted with the Big bore kit, keeping the RSs 54mm system, using 748R cam and ported and flowed Heads then chipped to suit.
In this state it made 118bhp just 5 bhp down on a standard 748RS but without the £3000 bill every 400 miles from reving the very wild cams at 11500 rpm