I got a set and FROM NEW they always one or two would always leak down making for hard starts.cant comment on any of their other parts. Also stay away from their big axel glide hydraulic lifters. I would definitely stay away from Jim's products mainly because their customer service is shit. Japanese made cast iron blocks sold by several distributors are good, probably as good as the original HD pieces. Jim's and Eastern offer the oversize tappet bodies, and most styles of tappets are offered in oversizes too, for fitting in your existing blocks.
Oversize tappet bodies are available, and the tappet blocks can be reamed and/or honed for oversize, same as fitting an oversize piston.
Solids will run happily, but you lose a little duration. 003, the assembly is WORN OUT, and you can have problems trying to run hydraulic tappets with that much wear. The tappet block bores also wear bellmouthed fore and aft. They will wear barrel shaped fore and aft (their thrust faces) and any that measure more than. This causes a lot of problems that people wrongly blame on the HD hydraulic tappet insert, which is actually a very good piece. OK, now the tappet blocks, and the factory hydraulic tappet bodies, not the hydraulic insert itself:Īlmost all shovels you will encounter have tappet blocks and tappet bodies that are WORN OUT!
#HARLEY EVO CAMSHAFT CRANE INSTALL#
Crane used to offer something similar, but the pushrods were so long, you had to pull the cam to install the kit, and FUCK THAT! S&S also sells a solid tappet adapter and pushrod set that uses an evo style adjustable pushrod, and these are good for hot street motors with moderate cams. S&S and Colony also sell a solid tappet adapter that uses the existing stock pushrods, and that is the lowest buck way to convert to solids, but I wouldn't use these with big cams. Eastern and Jim's do offer the pan style solid tappet assembly, with the Eastern adjusting screw being a little weak. They used to sell the pan style tappets but I don't know if they still offer them. S&S sells this style tappet adapter kit, with chromemoly pushrods. The main thing is that the plain pushrods can be very strong (depending on mfg.) so you get a nice stiff pushrod for use with big valve spring loads. These work very well with big cams and high rpm, so you see this style in race motors. The adjusting screw is in the tappet, and the pushrods are plain, like an ironhead. Next is the '48 - '52 pan style tappets and tappet adapters which essentially work the same. (You can often see the tubes moving when the motor is running.) I personally will not use these because of the potential leak problem. These work, but the large diameter pushrods rub the pushrod tubes, causing them to wiggle and leak. aluminum pushrods, and the large radius pushrod tip. The one you will see most often in old motors is the Sifton type with the 1/2" dia. So, you can pull the hydraulic unit out and replace with any number of tappet adapters. The factory shovelhead tappet consists of a tappet body with a drop-in hydraulic unit.
#HARLEY EVO CAMSHAFT CRANE FREE#
Now, if you want trouble free tappets, or you want a big cam (and can't afford VelvaTouch) you have the solid tappets and solid tappet conversions.
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