Engine knocking/pinking-4G93

[putera]

Hi all,

I drive a year 2001 SGTi with mmc ecu.Mods that I've done are:

1.HKS air filter
2.Powerzone Hi cams & extractor
3.Rebored TB
4.Adjustable cam pulley
5.Volker Iridium spark plug
6.Matspeed J5 management(not yet install)

However...with the current set up my engine is knocking at certain RPM.I went for dyno but the dyno guy was affraid to push the throtle to maximume due to engine knocking.Thats mean I didn't get the complete figure on the dyno charts.My questions are:

1.What caused the engine knocking?
2.What should I do to rectify the problem?

Thanx a lot guys.

 

[cooljas]

Hi all,

I drive a year 2001 SGTi with mmc ecu.Mods that I've done are:

1.HKS air filter
2.Powerzone Hi cams & extractor
3.Rebored TB
4.Adjustable cam pulley
5.Volker Iridium spark plug
6.Matspeed J5 management(not yet install)

However...with the current set up my engine is knocking at certain RPM.I went for dyno but the dyno guy was affraid to push the throtle to maximume due to engine knocking.Thats mean I didn't get the complete figure on the dyno charts.My questions are:

1.What caused the engine knocking?
2.What should I do to rectify the problem?

Thanx a lot guys.

Putera,
Since u change high cams and rebore throttle body ady, u have change ur engine characteristic in terms or air/fuel n ignition, some more u r running on stock mapping, which the air/fuel ratio might be lean at all rpm or certain rpm..to solve the problem install the j5 chip first!If stil knocking then try to retard ur distributor a bit, if distributor retard all still got knocking means something is wrong with your cam settings...Hope tis helps u!
Cheers

 

[V8_nutter]

Wrong cam setting.

 

[putera]

thanx V8 n Cooljass....So i need to get to charlie very soon.

 

[e819]

maybe due 2 not enough fuel support.. like mine le.. but already 1 year plus this problem.. if wanna get rid of the knocking must retard dist..

 

[putra4767]

putra

Yup, retard dist

 

[flushafteruse]

surely your cams timing n your ignition...its too advance

 

[e819]

but if i retard unting the knocking sound gone.. my car no power..