Originally Posted by jlewissystem
I got my WK at 35K and switched when i got it. I immediately noticed the tick and even after i switched. I heard it was a known rocker issue and just live with it - even after trying to overfill a 1/2 quart.
Here is some info that I learned from Brian at BNDAutomotive regarding the hemi tick. Supposedly this does significantly reduce/eliminate the hemi tick based on normal everyday people who have switched with positive results... Google is your friend. lol
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~From Brian:
The Hemi Tick is a typical problem for many people with 5.7L and 6.1L hemi engines. We don’t have enough experience on what the 6.4 will be like, but I believe it probably will suffer similar issues. The oil that we design for the 5.7L VVT Eagle engine that you have is a 7.5w23 QuantumBlue HP Competition Formula 5.7L VVT Custom Hemi Blend. It is designed for all the passages of the engine and provides more film strength for the engine than the typical mineral or synthetic oils that you get from off the shelf or from the dealer. The base stock is specifically ours, we add more zinc and phosphorous, more magnesium and calcium carbonate in it to protect this engine far better than typical lubricants.
Remember that the Hemi tick consists of 3 separate noises . 1) the injectors make noise due to lack of lubricity in the fuel. ACES IV addresses that. 2) Intake and especially exhaust valves are ticking against the valve seats because they have no cushion left from the fuel. No more lead (obviously gone since Jan 1 1986) and not even any sulfur….that is a high pressure lubricant. Mix that with 10% ethyl alcohol and you have a really bad mix. Hammering basically metal to metal. 3) the short piston skirt on the hemi causes the piston to rattle in the bores in idle. This is why they add the moly coat to the skirt so that it will quiet down. As the engine gets some miles on it, the piston slap will get louder.
ACES IV takes care of #1 and #2, and QuantumBlue takes care of #3.