Back to shop ↗
THE HOLDEN COMMODORE FORUM

HOLDCOM Community

Built around the cars. Kept alive by the people.

+ Start a discussion
Holden Commodores gathered at Holdcom
Forum Home›Technical help
Technical help

deep tapping noise

Started by BTI355 vbmenu_register("postmenu_1882587", true); · 7 July 2008 · 2 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts.

im getting a deep tapping noise at around 2200 RPM both when free reving and under load. the noise has only started since i have replaced the head (ported and valve grind) which has a regrind cam (wades 1104), new lifters and machined lifter boxers. i have checked bearings and are all good. on the way home tonight i was getting lifter noise very bad (ticking) and also sounded has if something was rattling or loose and then back firing (im thinking it might be valve springs binding). cheers any help would be great
0 likes
could be the piston pin it has happened to both of my cars
0 likes
Exhaust leak? Its kind of hard to diagnose with the limited info given.
0 likes
Sign in or create an account to reply. New members are welcome—no purchase or old CT account needed.

Who’s online

0 members and 1 guest active in the last 15 minutes

No signed-in members active right now. Guests are welcome to browse.

Visitors Today35

33,602 threads, 484,230 posts and 24,897 images saved from CalaisTurbo.
As at . Recovery is continuing.