Robert Kenney
Super Moderator
Thought this might be helpful for others dealing with lifter tick on newly rebuilt or low mileage IH SV's or 4 cylinder engines.
A little of the back story might help.
I rebuilt the 152 in 2006-7. All new wear parts including a new oil pump (not rebuilt), lifters pistons, bearings ETC. After first start up and run, I realized that I had failed to install the front lifter gallery plug after trying to diagnose lifters that were not pumping up. Removed the front cover and installed the plug. Yes the lifters ultimately pumped up quickly, but one would still sometimes tick at idle. After breaking it in and a drive to Mammoth, it still had the tick. I replaces all of the lifters with new Johnston's and + .025 longer pushrods. It was slightly better so I let it go.
Fast forward to 2024,I'm debating selling the Scout because I just don't use it enough. I don't want to sell or try to sell it with the ticking lifter which has become a bit worse. Regardless of selling or not, I pulled the engine to find the issue.
I suppose this could end 2 ways, I fix the issue on the existing engine and sell the Scout, or I finish the 3-3/4" stroker / turbo charging project or something like that.
Stay tuned. I'll post the process and what I find and correct.
A little of the back story might help.
I rebuilt the 152 in 2006-7. All new wear parts including a new oil pump (not rebuilt), lifters pistons, bearings ETC. After first start up and run, I realized that I had failed to install the front lifter gallery plug after trying to diagnose lifters that were not pumping up. Removed the front cover and installed the plug. Yes the lifters ultimately pumped up quickly, but one would still sometimes tick at idle. After breaking it in and a drive to Mammoth, it still had the tick. I replaces all of the lifters with new Johnston's and + .025 longer pushrods. It was slightly better so I let it go.
Fast forward to 2024,I'm debating selling the Scout because I just don't use it enough. I don't want to sell or try to sell it with the ticking lifter which has become a bit worse. Regardless of selling or not, I pulled the engine to find the issue.
I suppose this could end 2 ways, I fix the issue on the existing engine and sell the Scout, or I finish the 3-3/4" stroker / turbo charging project or something like that.
Stay tuned. I'll post the process and what I find and correct.