K series, supersport cams just fitted, uneven idle, is my cam timing set correctly?

[Adam Godfrey]

I've just had a mildly ported head, supersport cams, verniers, 52mm throttle body and kmaps ecu fitted to my k series.

It has now got a pretty uneven idle (see video here

) and on checking the verniers it doesn't look like the cam timing has really been adjusted at all (inlet seems set in the centre and exhaust perhaps just off by 2 degrees).

Does it look and sound like the cams have been set up correctly?

I am new to all this so would appreciate any advice from those that know.

Everything fitted was perviously fitted to another K series and running ok.

Thanks

Adam

[Wrightpayne]

Adam,

How have you timed the cams? Have you done as per the DVA power website?

Ian

[Adam Godfrey]

Hi Ian

No I didn't do the job myself, a garage did it.

After looking at the verniers and the uneven idle, I'm just a bit concerned if it has been done correctly.

It runs well up the rev range though, just less good at low revs

Adam

 

[Wrightpayne]

Adam,

It isn't a case of simply aligning the vernier pulley markings. I'd ask them what process they used - it should involve at least two and ideally 3 (for speed) dial gauge indicators. This is to adjust / set the cams, using the verniers, to open/close the valves at the optimum time in relation to the pistons.

There was a recent thread on supersport cam timing where Oily (aka Dave Andrews, author of the DVA Power website) posted the timing figures for the cams.

Regards

Ian

[oilyhands]

Lift at TDC for SS cams (hydraulic) is..

50 thou LATDC inlet, 44 thou LATDC.

If the idle is heavy at those figures, then back off by 5-10 thou (reduce the LATDC on both cams, retard the inlet, advance the exhaust).

 

Oily