These do look nice..

http://www.calverst.com/shop/index.php? ... cts_id=121

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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.

Indeed, none of that roller rubbish getting in the way of a good rocker

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http://www.mini-hb.co.nz

Somebody should post up some good busted roller rocker pics.
I've seen quite a few, both cheapo ones, and expensive.
I'm sure many punters get captivated by their Bling! factor, yet you can't see them once installed, haha.

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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.

Are you suggesting there's an opportunity there for someone to make a transparent rocker cover?

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ex-NSW Police 1970 MK II Cooper S
VMCI #43

Making it clear is easy the hard part is keeping it clean so you can see them

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Respect mine and I'll respect yours.

For those that can remember it's a bit like Ted Bullpit polishing the dipstick in the Kingswood on the old tele show Kingswood Country

Showing your age now

I was 6yrs old when it 1st come out in 1980

What sort of hp gain could be expected going from stock to the 1.4's?

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..

Bump! Anyone have advice on this?

cheers

Mikal

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..

Its like going up a cam size. It exaggerates a cam lobe to give it a little more lift. The gains would be mild if that's what you are after, short of guessing a couple of HP for the right engine....

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

What engine? Will vary greatly without knowing your engine specs.

Hi gtogreen,

My engine specs are at the bottom of my post. Its a big valve head with extensive porting/ polishing etc. Camshaft specs unknown but it was made by a well known engine builder who described it as "a nice road cam but good for weekend work if you want". Its definitely not a 649 which I've had, but it has good low down torque, comes on at 2500ish rpm and happily revs to 7000 which is why I descibe it as a "731 type cam". If the 1.4 rocker setup only has a few hp gain I dont see the return on investment for the price.

cheers

Mikal

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..

Probably only a few hp. If you are currently running forged Cooper S rockers you will see the biggest gain because they are only about 1.2 to 1 ratio. Find out what you have first. Doc has done a bit of research in the rocker department. He may be able to help you more.

Standard factory rockers are low on valve lift, I measured ratios of only 1.16:1 (Cooper S) to 1.21:1 (sintered) with an RE13 cam and a 1275 head.
Hi lift 1.5 rockers give more top end, but this can be at the expense of bottom end torque.

I have 1.5s in my 1360, on the chassis dyno with an RE282 sprint cam, it gave peak power at 7000-7200. There is a noticeable power surge from a bit under 5000 rpm, and then it hauls ass to 8000 if I let it.

1.4:1 rockers are a good ratio. I have modded and fitted K3 Corolla ones for a few people, these were around 1.42- 1.44:1.

[edit] typo

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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.