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Throttle cable advice
joemotion - 12/6/10 at 01:24 PM

Ive recently had issues with power (to the point where i was about to sell up) however got her booked in for a tune next week. Ive noticed in the meantime that the throttle cable wasnt right - as i pressed the accelerator i got no revs till at least half way down. Ive just altered it so i just have to tap the peddle and she revs. This has changed the car totally as she is 100% quicker off the mark with wheels spinning all over the place! Question is though am i now over revving the car as sounds very throaty at 6-7000 revs and in turn casuing damage? Im running CVH with ZX9 carbs. Also will i have issues as im running a standard non LSD? Your advice please?


DRC INDY 7 - 12/6/10 at 01:36 PM

Nope looks like the cable is set right now were as before you were only getting half throttle hench the power loss through lack of revs


Jon Ison - 12/6/10 at 01:38 PM

Hi, you have just learned a very good tuning lesson that many miss.

Is my throttle opening all the way ?

You would be amazed how many dont. The other side of this is fit a throttle pedal stop to avoid stretching/breaking the cable.

As for damaging the engine, I assume it as a rev limiter fitted ? If not fit one dont know what the safe max is for your engine.

I would suggest you dont want to spend to long at max revs though if your looking for longevity.


joemotion - 12/6/10 at 01:44 PM

not sure if it has a rev limiter? how can you tell? (no does it limit the revs comments).


Jon Ison - 12/6/10 at 01:46 PM

A rev limiter is an electronic device that does not allow the engine to rev over a set limit, normally in the modern cars brain (ecu) if not after market ones are plentiful, cheap and easy to fit.


eta How can you tell ? Rev the engine obviously keeping a eye on the revs in case it does not have one, when it reaches around for a guess 7k ish revs it wont go any further and you will hear it "surging" for want of a better word as the limiter keeps cutting the spark.

[Edited on 12/6/10 by Jon Ison]

[Edited on 12/6/10 by Jon Ison]


joemotion - 12/6/10 at 02:46 PM

she seems to be running fine until i got home when i noticed she was running at 110 degrees and so got a wet and burnt foot!

She's getting tuned next week so will find out what is going on - anybody any ideas or recommendations in the meantime?


Jon Ison - 12/6/10 at 03:06 PM

Probably in need of a good set up session now you have full throttle, heat could be caused by running lean


joemotion - 12/6/10 at 03:40 PM

yeah think your right - let her cool down and all good now. Hopefully when set up properly will be ok