Results 1 to 13 of 13
Thread: stato99
-
12-15-2008, 01:09 AM #1
- Join Date
- Nov 2008
- Location
- queensland
- Posts
- 3
black- 2001 vx ss
stato99
G'day again guys and gals. I have another question i run premium here which is 98 and i still get a pinging noise from it. What is the best over the shelf octane booster too use?
-
12-15-2008, 02:42 AM #2
- Join Date
- Oct 2007
- Location
- Beaver Dam KY
- Posts
- 7,745
79 T/A -91 Firebird- 1998 Trans Am -Oynx Black
Octane boosters do not work. Sarge will back me up on that I think...
Might have knock sensor issues maybe???
I would get ahold of the Moderator Sarge.. he can probably help.Last edited by JoshieDoom; 12-15-2008 at 05:22 AM. Reason: i cant spell im from ky.. PISS
-
12-15-2008, 05:14 AM #3
- Join Date
- Jan 2006
- Location
- Shepherd, Michigan
- Age
- 36
- Posts
- 11,770
blacker than wesleysnipes- 98' trans am
this deff needs to be moved
-
12-16-2008, 06:04 AM #4
I'm not familiar with your car or mods done to it, but have you bumped your compression up or advanced your timing?
I do know your 98 octane eqauls around only 89-91 octane here in the US. do you have any race fuel on the rating of 105+unleaded octance on your scale avalible in your area?
-
12-16-2008, 06:18 AM #5
- Join Date
- Jan 2006
- Location
- Shepherd, Michigan
- Age
- 36
- Posts
- 11,770
blacker than wesleysnipes- 98' trans am
even better though..when does the car ping? durring start up..or warming up..or does it just always ping ? ..i'd get your o2 sensors checked possibly also
-
12-16-2008, 06:19 AM #6
- Join Date
- Jan 2006
- Location
- Shepherd, Michigan
- Age
- 36
- Posts
- 11,770
blacker than wesleysnipes- 98' trans am
if its a ls1..then the pinging your hearing might also be "slapping" referring to piston slap..but PS stops once the car warms up
-
12-17-2008, 02:03 PM #7
the bottom line is more info is needed. Any mods done to the car and when does it ping? Those 2 will help quite a bit. 89-91 octane is pretty low. I'm not familiar with the octane conversions and didn't even know there was a difference between your ratings and ours but I'll take mark's word that it converts to that.
-
12-18-2008, 09:39 PM #8
- Join Date
- Nov 2008
- Location
- queensland
- Posts
- 3
black- 2001 vx ss
g'day guys i know i was vague with my answer. My motor has been mafless tuned and a pacemaker 4 into 1 extractors and 2.5" pipes with high flow cats and mufflers. The noise starts around 5000 rpm and makes a noise similar too pinging but the pulling speed doesnt change. I hope this helps
-
12-18-2008, 10:14 PM #9
do you have access to a data logger so you can log knock? That will tell you a lot. Who tuned your car? Reputable shop? Has your AFR been verified using a wideband?
-
12-19-2008, 04:24 AM #10
- Join Date
- Jan 2006
- Location
- Shepherd, Michigan
- Age
- 36
- Posts
- 11,770
blacker than wesleysnipes- 98' trans am
lifter tap ? maybe..if its high rpm i bet its valvetrain...push rods might have a slight bend to them even maybe
-
12-19-2008, 09:48 AM #11
-
12-19-2008, 10:23 AM #12
-
12-19-2008, 11:09 AM #13
Are you sure it's pinging? I was certain my was pinging until I got a laptop connected and saw that no timing was being pulled (while the noise was occuring). My problem turned out to "shifter buzz" coupled amplified by an ashtray full of change:-)
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
stato99
By stato99 in forum New Member IntroductionsReplies: 2Last Post: 12-23-2008, 09:37 PM
Bookmarks