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Telford_mike - I hear ya mate, but I just cant justify it with the repair bill and all, shame really, but gotta have it done before Brands Hatch ;-)
JJ172 - The car drives on the road like a dream, noticably faster than before, and the rev limit helps in getting the jump on gear changes, next mod? I dont know, maybe Throttle Bodies, I really wana see 200bhp+, get to that magical 100bhp/Litre
Joe - Yeah, I know I was disapointed but he didnt record the figure at the wheels on the first run, so couldnt do the comparison graph ATW, bummer really. Now, what do you think my next performance mod should be? taking into account me wanting to get to 200bhp of course, throttle bodies? I still want it to be a good town driving car so no Wild Cam ideas matey
Capt, we did get exactly 215BHp with a std motor and tbs! well, and magneti marelli control.
and out of interest, what is you view on tapered TBs, saya 48mm taper to a 42mm.......alot has been talked about teh ebnefits to torque etc etc, but isnt the 42mm inlet still teh main overiding restriction, its like adding a tapered trumpet to a carm, its still a 400mm DCOE aint it.
the only reason was to allow a better atomisation of fuel from carb jets.. ie, a high speed (not pressure !) flow, caused a better partial vacuum causing fuel to be drawn into the air stream.. speed assisted atomisation.
Work it out yerself lol !!.
higher speed could assist in flow if the ports were badly designd.. if however, the ports are optimised, then no venturi effect is gonna make any difference.