hey all,

 

well i took my 5k cam to tighe, and told them i wanted the tighe 104 grind.. so i drove up there today and picked it up ( i live in nsw )

 

and just looking at the tag, it has these specs on it? this isnt the grind i asked for, is it?

 

Close to the specs of it.

Close to the specs of it.

the lift is far smaller though? or am i just reading it wrong?

 

also do they not gring to the specs, just to an " approx " ?

the lift is far smaller though? or am i just reading it wrong?

 

also do they not gring to the specs, just to an " approx " ?

 

If you look on the charts they state 'advertised' what they advertise and what you may get will be different.

If you look on the charts they state 'advertised' what they advertise and what you may get will be different.

hmm fair enough, i was just under the impression i would get it done to the exact mentioned specs.. but yeah.

and also, so really.. it dosnt run .423 lift like they say.. so there was really no point in upgrading to hd springs like they say

Thats your lift @ lobe

 

Multiply 0.294" by 1.5 which is your rocker ratio.

 

That will give you lift @ valve

 

EDIT. 0.294" x 1.5 = 0.441" lift @ the valve.

Edited December 20, 201114 yr by SLO-030

and ive always used duration @ 50 thou not advertised duration

I don't really understand much about cams.. I just know what I wanted, haha. I'll talk to a mate tomorrow ( mechanic ) and have him explain it all to me.. Thanks guys

268 duration @ 50thou. mild/wild cam

 

ask tighe if the cam has any advance/retard on it. if it does it will need to be dialed in

K engines should have their valve springs replaced with heavier duty springs over .420" of valve lift.

 

The lift quoted on the card, is how much lift the cam lobe has on it.

 

You multiply that by the ratio of the rocker. Which is the amount the rocker increases the lift that the cam lobe has on it.

 

K engines have a 1:1.5 rocker ratio. Meaning for every .001" of lobe lift. The rocker produces .0015" of valve lift.

 

This cam will give you .441" of valve lift. Which is lucky you replaced your valve springs.

K engines have a 1:1.5 rocker ratio. Meaning for every .001" of lobe lift. The rocker produces .0015" of valve lift.

 

are you sure?

sounds like that would be 15:1 lol?

although 441thou lift at the valve is correcto

Check the decimal point Mitch :wink:

I stand corrected

Derrrrrrp