Schubeck Lifter Update

Jeff Lee · 08-19-2007, 11:43 PM

AS I stated in my argument that NHRA should allow AFFORDABLE solid lifters in lieu of $800 quasi-hydraulic lifters, a Schubeck "hydraulic" lifter typically has only +/-.015" plunger travel as required by NHRA. In affect, it is a solid lifter. Remember, this isn't anything like the solid cams / lifters of yesterday. Glued on glass puck...

Cam,
Setting at "zero" lash opens the possiblity of the valve not seating. I've tried it. The engine sounds like it has 7.1 compression, and runs like it also! At least that's my experience. Even my 1st Stocker 390 AMC engine had "real" Comp Cams hydraulic lifters. I initially set the lifters at minus 1/8 turn lash - like a street / bracket car. It was embarrasing the way it sounded. Re-adjusted to +.003"-.005" and it sounded like it picked up 100 HP at idle.

08-19-2007, 11:43 PM	#37
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Schubeck Lifter Update AS I stated in my argument that NHRA should allow AFFORDABLE solid lifters in lieu of $800 quasi-hydraulic lifters, a Schubeck "hydraulic" lifter typically has only +/-.015" plunger travel as required by NHRA. In affect, it is a solid lifter. Remember, this isn't anything like the solid cams / lifters of yesterday. Glued on glass puck... Cam, Setting at "zero" lash opens the possiblity of the valve not seating. I've tried it. The engine sounds like it has 7.1 compression, and runs like it also! At least that's my experience. Even my 1st Stocker 390 AMC engine had "real" Comp Cams hydraulic lifters. I initially set the lifters at minus 1/8 turn lash - like a street / bracket car. It was embarrasing the way it sounded. Re-adjusted to +.003"-.005" and it sounded like it picked up 100 HP at idle. __________________ Jeff Lee 7494 D/S '70 AMX