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Ace, Aceca & Greyhound Forum / Re: Weber carbs
« on: December 01, 2021, 18:36:12 »
I'm currently working on RSX 5501 & can confirm that Webers were fitted on this car from new together with a Mays head.
The only real difference on the 2.6 cars was a different throttle pedal that uses a cable rather than a rod linkage.
Weber manifolds for Mays heads are available from Webcon in the UK but they are somewhat chunky looking when compared to originals.
Newman Cams, also in the UK can regrind the original Ford cam to give a useful power increase. Their regrind has a duration of
260 degrees, which they state puts the power within a useable rev band for a road car. The valve timing for this cam is 20/60/60/20
The exhaust for the Mays head was either the twin iron "Y" style manifolds or separate 3 into 2 steel headers.
Lastly, the YouTube video is interesting but I'm unsure why they're going to all that trouble & expense for such a small power increase.
These engines can easily make good power even with the iron head but the limiting factor is the original main bearing caps that crack
down the middle & the useless original clutch design. Both these problems were long ago solved by the late Greg Margetts of Competition Engine Services.
He once told me that a properly prepared engine with a flowed Mays head easily made 220 BHP, all without overboring or crank stroking.
Regards Luke.
The only real difference on the 2.6 cars was a different throttle pedal that uses a cable rather than a rod linkage.
Weber manifolds for Mays heads are available from Webcon in the UK but they are somewhat chunky looking when compared to originals.
Newman Cams, also in the UK can regrind the original Ford cam to give a useful power increase. Their regrind has a duration of
260 degrees, which they state puts the power within a useable rev band for a road car. The valve timing for this cam is 20/60/60/20
The exhaust for the Mays head was either the twin iron "Y" style manifolds or separate 3 into 2 steel headers.
Lastly, the YouTube video is interesting but I'm unsure why they're going to all that trouble & expense for such a small power increase.
These engines can easily make good power even with the iron head but the limiting factor is the original main bearing caps that crack
down the middle & the useless original clutch design. Both these problems were long ago solved by the late Greg Margetts of Competition Engine Services.
He once told me that a properly prepared engine with a flowed Mays head easily made 220 BHP, all without overboring or crank stroking.
Regards Luke.
