Condor1970
Well-Known Member
- Joined
- Oct 4, 2018
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- Location
- Port Orchard WA
- Vehicle(s)
- 2018 Mustang GT
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- #1
Well, I just had a crazy idea. What I'd like to do is start a thread with volunteers willing to do a little experiment.
The experiment involves either recording or just writing down a good description of the BBQ tick you currently have. Frequency, and when it comes and goes. RPM differences, etc.
Then do the following:
1. Start your car, and go out on the highway. For MT-82 drive in 3rd gear. For 10R80, drive in 4th-6th manually.
2. Bring engine rpm up to a constant 3,500rpm at roughly 50-60mph, and keep it there for a good 10-15 minutes under that load. This will not harm your engine, and is an rpm above which most do not hear the tick.
3. Then drive directly home. While in your driveway or garage, blip the throttle while in neutral, and rev to lower rpm's up to 2,000rpm.
4. Make note of any change in frequency or volume of ticking you hear, then record it if possible.
5. Post all your findings with the best description you can. What oil you're using? etc. If you changed to Pennzoil Ultra Platinum, how well did it fix the tick, if at all.
The point of all this, is I have a very sneaky suspicion this BBQ tick is primarily piston slap heard at lower rpm when under light load, and a cooler engine block. If it was a journal bearing problem, there would be very little change due to change in temperature. If anything, it would be worse as oil is hotter and thinner with slightly less shear protection. Piston slap will almost certainly change to some degree with a hotter engine block.
I'd like to see how much commonality there is between as many of us as possible. In my case, after doing this exact experiment, the engine tick was COMPLETELY gone when the block was that hot. The next day it returned, but slightly less.
Volunteers post your finding below.
The experiment involves either recording or just writing down a good description of the BBQ tick you currently have. Frequency, and when it comes and goes. RPM differences, etc.
Then do the following:
1. Start your car, and go out on the highway. For MT-82 drive in 3rd gear. For 10R80, drive in 4th-6th manually.
2. Bring engine rpm up to a constant 3,500rpm at roughly 50-60mph, and keep it there for a good 10-15 minutes under that load. This will not harm your engine, and is an rpm above which most do not hear the tick.
3. Then drive directly home. While in your driveway or garage, blip the throttle while in neutral, and rev to lower rpm's up to 2,000rpm.
4. Make note of any change in frequency or volume of ticking you hear, then record it if possible.
5. Post all your findings with the best description you can. What oil you're using? etc. If you changed to Pennzoil Ultra Platinum, how well did it fix the tick, if at all.
The point of all this, is I have a very sneaky suspicion this BBQ tick is primarily piston slap heard at lower rpm when under light load, and a cooler engine block. If it was a journal bearing problem, there would be very little change due to change in temperature. If anything, it would be worse as oil is hotter and thinner with slightly less shear protection. Piston slap will almost certainly change to some degree with a hotter engine block.
I'd like to see how much commonality there is between as many of us as possible. In my case, after doing this exact experiment, the engine tick was COMPLETELY gone when the block was that hot. The next day it returned, but slightly less.
Volunteers post your finding below.
Sponsored
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