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PostPosted: Mon Jul 30, 2018 12:39 pm 
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Hi,

I've been reading up on 1.5 lift rockers and I'm considering giving a set a go on my Moke for a bit more mid-top end.

The Moke is running a 1275 out to 1301cc and has a very mild Wade 112 cam spec, ground by Clive Cams.

One thing I am not sure about is what clearances I would need to run. I read that 1.5 rockers need 0.003" more clearance than stock. The Wade cam already runs a wider clearance than stock. (I can't remember what exactly, I have them at home.)

So, would I need to add another 3 thou to the Wade camshaft recommended clearances?

Thanks,

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Greendale (near Ballan) VIC.
1971 Morris Mini Moke
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PostPosted: Mon Jul 30, 2018 2:16 pm 
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bnicho wrote:


So, would I need to add another 3 thou to the Wade camshaft recommended clearances?

Thanks,


Yes add 3 thou more. The 3 thou allows for the extra heat expansion rate when using the 1.5 ratio.
This explains it pretty well. https://www.minimania.com/Valve_train__ ... ces__lash_

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PostPosted: Mon Jul 30, 2018 2:24 pm 
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Location: Sthrn HiLoLands, NSW, Australia
bnicho wrote:
Hi,

I've been reading up on 1.5 lift rockers and I'm considering giving a set a go on my Moke for a bit more mid-top end.

The Moke is running a 1275 out to 1301cc and has a very mild Wade 112 cam spec, ground by Clive Cams.

One thing I am not sure about is what clearances I would need to run. I read that 1.5 rockers need 0.003" more clearance than stock. The Wade cam already runs a wider clearance than stock. (I can't remember what exactly, I have them at home.)

So, would I need to add another 3 thou to the Wade camshaft recommended clearances?

Thanks,


Sounds like Clive Cams are well aware of what clearance to use...so...try their recommendations and see how she revs and whether she is happy???

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PostPosted: Thu Aug 02, 2018 12:09 pm 
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Location: near Baulkham Hills, NSW
Should run .003" more than what is recommended for the cam with stock 1.2 rockers. If you don't, the cam lobe to lifter clearance is less than designed. This can lose you torque.
Be guided by the cam supplier.

For example my RE282 cam with 1.5 rockers runs .022" inlets and .024" on exhausts, because that's what Graham Russell the designer recommends.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:


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PostPosted: Thu Aug 02, 2018 1:15 pm 
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Location: Melbourne, VIC.
Thanks guys. Add three thou it will be.

Cheers,

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Brett Nicholson
Greendale (near Ballan) VIC.
1971 Morris Mini Moke
1966 Austin Mini
1965 Morris Mini Traveller
1974 VW Beetle
2007 LR Freelander 2


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PostPosted: Mon Aug 13, 2018 9:23 pm 
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I ran a holden The tighter I made the rocker clearances the harder it ran Told me I had the wrong cam
It was smaller than RE13 prolly 266 spec Bert Jones


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