What harmonic balancer to get?
It’s time to change my harmonic balancer on my g8. Ive looked up and saw people went with a few brands such as Slp, ATI, powerbond and fluidampr.. any suggestions on which one I should get??
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g8 Harmonic Balancer Replacement
Hello cars harmonic balancer got ripped apart basically, looking to upgrade it, cars currently cammed making about 430wheel? Can someone please guide me in the right direction for a good replacement? So i wont have to replace it again? Ive seen powerbond PB1117SS Dampener as a good replacement…
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I used this one on my recent build.
A little pricey though.
ATI Performance Products ATI917266 ATI Super Damper Serpentine Series Harmonic Balancers | Summit Racing
A little pricey though.
ATI Performance Products ATI917266 ATI Super Damper Serpentine Series Harmonic Balancers | Summit Racing
While I have the same damper , the one thing that I dont like is when they designed it to fit the tight confines of a Corvette they use all flat head countersunk hardware.
Now it might be guys not torquing correctly but there has been more than one instance of the hardware coming loose in Corvettes.
To that end I machined and added the three " missing" bolts.
In other applications where the three extra bolts are there ATI says never to run without them !
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Now it might be guys not torquing correctly but there has been more than one instance of the hardware coming loose in Corvettes.
To that end I machined and added the three " missing" bolts.
In other applications where the three extra bolts are there ATI says never to run without them !
Do i need to buy any special belts for it or retune it at all after the replacement?Check out ATI* harmonic balancers.What harmonic balancer to get?
It’s time to change my harmonic balancer on my g8. Ive looked up and saw people went with a few brands such as Slp, ATI, powerbond and fluidampr.. any suggestions on which one I should get??
Do you have issues with the a/c throwing belts with the stock ac tensioner ?While I have the same damper , the one thing that I dont like is when they designed it to fit the tight confines of a Corvette they use all flat head countersunk hardware.
Now it might be guys not torquing correctly but there has been more than one instance of the hardware coming loose in Corvettes.
To that end I machined and added the three " missing" bolts.
In other applications where the three extra bolts are there ATI says never to run without them !
View attachment 188607 View attachment 188608
Interestingly, I never loss a belt with the wobbling stock damper on the GXP.
After the damper change , at some point a time later, the belt came off so I updated the idler system.
After the damper change , at some point a time later, the belt came off so I updated the idler system.
The stock belt is compatible with the PB1117SS. However, an underdrive pulley requires a different belt. Retuning is not necessary.
Remember to do a
Crankshaft Position System Variation Learn
after balancer replacement
Crankshaft Position System Variation Learn
after balancer replacement
How does the dampener replacement impact the variation ? I'm running an ATI, had it off for two cam swaps (It's pinned), have not performed this calibration. Can it be done with HP tuners? What is downside of not doing?Remember to do a
Crankshaft Position System Variation Learn
after balancer replacement
Interesting in that in GM ESI, in dampener replacement section it does not list the procedure, yet in the procedure section, it states it should be performed when dampener is replaced.
Service Information
2009 Pontiac G8 | G8 Service Manual | Engine | Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L | Repair Instructions - On Vehicle | Document ID: 2037359
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Crankshaft Balancer Replacement
Installation Procedure:
Install the crankshaft balancer. Refer to Crankshaft Balancer Installation.
Install the starter motor. Refer to Starter Motor Replacement.
Install the air conditioning (A/C) drive belt. Refer to Air Conditioning Compressor Belt Replacement.
Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory.
Install the radiator. Refer to Radiator Replacement.
Connect the battery. Refer to Battery Negative Cable Disconnection and Connection.
Service Information
2009 Pontiac G8 | G8 Service Manual | Engine | Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L | Repair Instructions - On Vehicle | Document ID: 1914775
--------------------------------------------------------------------------------
Crankshaft Position System Variation Learn
Install a scan tool.
Monitor the engine control module (ECM) for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
Select the crankshaft position (CKP) variation learn procedure with a scan tool.
The scan tool instructs you to perform the following:
4.1. Accelerate to wide open throttle (WOT).
4.2. Release throttle when fuel cut-off occurs.
4.3. Observe fuel cut-off for applicable engine.
4.4. Engine should not accelerate beyond calibrated RPM value.
4.5. Release throttle immediately if value is exceeded.
4.6. Block drive wheels.
4.7. Set parking brake.
4.8. DO NOT apply brake pedal.
4.9. Cycle ignition from OFF to ON.
4.10. Apply and hold brake pedal.
4.11. Start and idle engine.
4.12. Turn A/C OFF.
4.13. Vehicle must remain in Park or Neutral.
4.14. The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
• CKP sensors activity--If there is a CKP sensor condition, refer to the applicable DTC that set.
• Camshaft position (CMP) sensor activity--If there is a CMP sensor condition, refer to the applicable DTC that set.
• Engine coolant temperature (ECT)--If the ECT is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.
Enable the CKP System Variation Learn Procedure with a scan tool.
Important: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.
Accelerate to WOT.
Release when the fuel cut-off occurs.
Test in progress.
The scan tool displays Learn Status: Learned this ignition. If the scan tool indicates that DTC P0315 ran and passed, the CKP Variation Learn Procedure is complete. If the scan tool indicates DTC P0315 failed or did not run, refer to DTC P0315. If any other DTCs set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.
The CKP Variation Learn Procedure is also required when the following service procedures have been performed, regardless of whether DTC P0315 is set:
• A CKP sensor replacement
• An engine replacement
• A ECM replacement
• A harmonic balancer replacement
• A crankshaft replacement
• Any engine repairs which disturb the CKP sensor relationship
I see no correlation between a damper change and crank relearn
I see you highlighted it
Unless some one cam explain the correlation,
I submit the instructions are some what general and may encompass some engines where there the damper has involvement due to reluctor placement.
Happy to be shown I am incorrect but need more than " because they say so"
Unless some one cam explain the correlation,
I submit the instructions are some what general and may encompass some engines where there the damper has involvement due to reluctor placement.
Happy to be shown I am incorrect but need more than " because they say so"
I agree, I do not see the reason for the calibration on the l76/LS2, maybe another LS variation. The install process is L76 specific, does not call for the relearn.I see you highlighted it
Unless some one cam explain the correlation,
I submit the instructions are some what general and may encompass some engines where there the damper has involvement due to reluctor placement.
Happy to be shown I am incorrect but need more than " because they say so"
Was there any extra hardware needed to be purchased? And Did you need to purchase the ac holden bracket as well or it held up with the stock one? Ill be ordering this because i see everyone else uses them on tooI used this one on my recent build.
A little pricey though.
ATI Performance Products ATI917266 ATI Super Damper Serpentine Series Harmonic Balancers | Summit Racing
I bought the ATI tool for the bolts on the balancer. I can't remember what they are called off the top of my head but, it was the perfect tool for the job. I did buy the Holden AC bracket and installed it. The day I pulled the car into my garage to get started, I noticed the ac belt had jumped.
Not exactly sure they don't show it in balancer replacement instructions, it was always like that, all i know in the days when many Corvettes and LS-3 cars were having balancers separating after replacing many balancers, some came back with P0300 codes set and some with P1336 codes, all fixed with the crank relearn, even after road testing after repairs, not sure from the wobble of bad balancer threw something off or not, just sharing my 4+ decades at GM
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