These do look nice..
http://www.calverst.com/shop/index.php? ... cts_id=121
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| Keith Calver's new 1.4 rocker sets https://www.ausmini.com/forums/viewtopic.php?f=2&t=87974 |
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| Author: | drmini in aust [ Tue Dec 09, 2014 12:17 pm ] |
| Post subject: | Keith Calver's new 1.4 rocker sets |
These do look nice.. http://www.calverst.com/shop/index.php? ... cts_id=121 |
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| Author: | smac [ Tue Dec 09, 2014 12:43 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
drmini in aust wrote: These do look nice.. Indeed, none of that roller rubbish getting in the way of a good rocker 
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| Author: | drmini in aust [ Tue Dec 09, 2014 1:45 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
smac wrote: drmini in aust wrote: These do look nice.. Indeed, none of that roller rubbish getting in the way of a good rocker 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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| Author: | winabbey [ Tue Dec 09, 2014 3:39 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
drmini in aust wrote: I'm sure many punters get captivated by their Bling! factor, yet you can't see them once installed, haha. Are you suggesting there's an opportunity there for someone to make a transparent rocker cover? 
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| Author: | Kennomini [ Tue Dec 09, 2014 4:50 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
winabbey wrote: drmini in aust wrote: I'm sure many punters get captivated by their Bling! factor, yet you can't see them once installed, haha. Are you suggesting there's an opportunity there for someone to make a transparent rocker cover? Making it clear is easy the hard part is keeping it clean so you can see them 
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| Author: | Goldbrocade_62 [ Tue Dec 09, 2014 8:37 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
Kennomini wrote: winabbey wrote: drmini in aust wrote: I'm sure many punters get captivated by their Bling! factor, yet you can't see them once installed, haha. Are you suggesting there's an opportunity there for someone to make a transparent rocker cover? Making it clear is easy the hard part is keeping it clean so you can see them 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 |
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| Author: | guna mk1 [ Tue Dec 09, 2014 8:59 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
Showing your age now |
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| Author: | Goldbrocade_62 [ Tue Dec 09, 2014 9:16 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
guna mk1 wrote: Showing your age now I was 6yrs old when it 1st come out in 1980 |
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| Author: | deluxe67 [ Wed Dec 10, 2014 11:59 am ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
What sort of hp gain could be expected going from stock to the 1.4's? |
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| Author: | deluxe67 [ Thu Dec 11, 2014 7:28 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
Bump! Anyone have advice on this? cheers Mikal |
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| Author: | Mick [ Thu Dec 11, 2014 7:49 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
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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| Author: | gtogreen1969 [ Thu Dec 11, 2014 7:53 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
What engine? Will vary greatly without knowing your engine specs. |
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| Author: | deluxe67 [ Thu Dec 11, 2014 8:13 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
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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| Author: | gtogreen1969 [ Thu Dec 11, 2014 8:39 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
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. |
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| Author: | drmini in aust [ Thu Dec 11, 2014 9:18 pm ] |
| Post subject: | Re: Keith Calver's new 1.4 rocker sets |
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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