I got cam lift .290" at lobes,
Duration is around 274*.
Hard to compare with other cams of similar duration, the lobe shape is assymetrical.
They work.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Doc, are you saying the RE13 lobes are assemetrical?

The RE 13 is NOT a scatter pattern cam, by assymetrical I mean when viewed end on, the rise and fall flanks of the lobe are different contour.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Anyone know the 2 dimentional area of the combustion chamber at the face of the head? (approximate) or roughly how much to take off per cc reduction?

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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

Doc, I know what you meant and that's my concern! What method do you use to time it then? The conventional "measure lift before and after TDC to find centre" won't work on an assemetrical profile (well it might, but that would be luck).

It IS symmetrical at the top so just time it normally, I use 0.005" from full lift points.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

must be arround 18 - 19 cm2 but im not sure, measure the depth of a stock head and go from there i guess, id do so if i had a head at my flat

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speed costs....how fast do you want to go...

OK, but any idea how far off full lift it differs? ( I assume because of where he was going with this cam it's fast opening but a slower close) Just wondering because I think I used 5thou but it could have been slightly more. Rather than fildding the dial gauge face and screwing up the alignment of it I tend to just measure from the nearest 'big' mark on the dial so in theory could be closer to 10thou (I have no idea if that makes sense.....)

whether you use 5 or 10 thou should not matter

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

No one is going to answer my question so I will answer it myself. I did a "rub" of the combustion chambers of the 295 and the 202, transfered to graph paper and counted the squares.

202 = 26.25 cm2 and 295 = 27.50 cm2 The Vizard addition takes the 295 to 27.73 cm2 but only need the section near the plug as it already fitted the rest.

end of todays useless information

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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

actually Wombat thats quites usefull info especially for building a hi compression 850 or 998 without a 940 head

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speed costs....how fast do you want to go...