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RB30 Camshaft - difference between the two

VL_Turbo
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VL_Turbo Contributor

VL_Turbo

Posted
Posted (edited)

Hi All,

interested in purchasing the crow cams below but out of stock. Have found a kelford cam but want to know how the kelford cam compares to TX2 or TXM.

Kelford cam specs are:

cam 274 or 226-F

 

i need to know the duration at 0.50 of inlet and exhaust like crow cams, kelford cam only has valve lift duration at 1mm.

 

could someone please work it out so I can have the specs like the crow cams.  Need to to duration at 0.50 of intake and exhaust. TIA

 

39DD684F-9F00-4762-9F86-E839EA3350CD.jpeg

31820227-BD8B-47C5-85B5-3A8DC977C111.jpeg

Edited by VL_Turbo
GTSBoy Grand Master

GTSBoy

Posted
Posted

Oh. For f**k's sake. 50 thou is 1.27mm which is so close to 1mm that you can just pretend that it is the same and the worst that can happen is that the duration measured at one of them will be a couple of degrees different from the other.

The guy at Kelford probably should have heard about measuring duration at 50 thou because he works for a cam manufacturer and 50 thou was the standard for a million years, but it is totally understandable that he doesn't know because he is likely <30 years old, lives and works in a country that has been metricated since before 1970 and will only be using SI units in their manufacturing process because they are civilised and not trapped under the weight of 300 years of 'Murica f**k Yeah yeehaw freedom units like Crow f**king Cams is.

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Ben C34 Grand Master

Ben C34

Posted
Posted

I like the way crow cams can't spell medium.

 

Out of curiosity what exactly are you comparing the cam specs to? Each other or some calculated desired valve timing events you have already figured out?

 

How much piston to valve clearance do you have to work with?

  • 2 weeks later...
FiXtUrE Enthusiast

FiXtUrE

Posted
Posted

I just thought of this & thought I’d let you know, the good news is the above camshafts do exist, but will they snap? 
 

get the specs off the Kelford “turbo” cam from golbeys & regrind your genuine one to those specs. clivecams, surecam & Marshall custom cams do reginds.
 

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