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Home > Help Needed / General Tech Chat > What valve springs should you use with an Avonbar phase 2 cam?

Rob H

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Member #: 700
Formerly British Open Classic

The West Country

8th Dec, 2006 at 11:00:19am

Does anyone know what strength valve springs are recommended when using an Avonbar phase 2 cam with standard rockers?

I appreciate that the springs need to be matched to the valve train and have seen the effects of springs that are too weak & too strong, and neither are pretty.

From searching old posts it appears that Turbo Dave and Alex F are both running 180 lb springs, but that was a couple of years ago, and I don't know if they are still running them or not.

Click here to read the old thread about valve springs

I realise that I could just buy a complete cam kit from Avonbar and use the springs in that, but I've already got a set of 180 lb springs*, so it would seem silly to buy the full kit if the only bit I need is the cam.

:EDIT: * = 180 lb is what it took to bind them when I measured them with a drill press the bathroom scales.

Edited by Rob H on 8th Dec, 2006.

Isambard Kingdom Brunel said:
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BENROSS

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9812 Posts
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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

10th Dec, 2006 at 11:56:07am

use minispares double springs

and please dont forget the inner spring locaters






Vegard

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I pick holes in everything..

Chief ancient post excavator

Norway

10th Dec, 2006 at 01:41:44pm

I've built loads of heads recently, and I have never used the inner spring locators. Cannot really see that there's a problem obmitting them. Anyone else with opinions on this?

Minispares do several sets of springs, just to add. I guess you won't need the hardest ones.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

RogerM

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I like nice quiet girly Minis

Cheltenham, Gloucestershire

10th Dec, 2006 at 02:05:32pm

Never had a problem with not using the locators either.

Every day is a school day ...........

How fast and how expensive ...... the same question...

On 27th of Sep, 2007 at 12:45pm Jimster said:
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Tom Fenton
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Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner

&

TM legend.

Rotherham South Yorkshire

10th Dec, 2006 at 06:14:55pm

The high rate springs I have used are "coil bound" between the inner and outer springs so the inner springs cannot wander.


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


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