Race Series® short travel hydraulic valve lifters - Lifters .843 17+M8

New revolutionary design with 0.115" total travel compared to 0.200" of a full-travel tappet
Increases RPM by reducing valve float and valvetrain vibrations, keeping the engine quiet.
Reduced travel decreases the oil volume required in the tappet, reducing oil aeration with high-lift, fast-action cams.
If there is aeration in the tappet, the valve stem seat drops when passing over the cam, generating noise and poor performance
Short travel pushrods must be adjusted with a preload of 0.065" - 0.070"; with engine thermal expansion, the operating preload will be close to half the travel.
Machined from steel and designed to withstand high-lift camshafts and higher valve spring pressures with reduced lash adjuster speed.
Compatible with Feuling® HP+® or Race Series® oil pumps and designed for street and strip engines
Maintains adequate oil flow to the top, increases engine RPM, valvetrain stability and reduces valve float to achieve maximum lift
Precision-machined needle roller bearing with a high-chromium steel shaft for great durability and minimal friction.
High-flow, fast-acting disc check valve for improved response at high RPMs.
Developed on the Spin-Tron bench and tested on track
Made in the U.S.A.
Feuling® recommends manually priming each tappet prior to installation to remove air and ensure correct operation. Light ATF-type oil is recommended for the oiler.
Feuling® recommends Race Series® lifters for engines with a valve seat spring pressure exceeding 185 lb (84 kg)
Feuling® recommends using a high-flow oil pump for quieter and more efficient tappets.



Specifications


Brand
FEULING PARTS


Supplier reference
4018ST


Application
Exhaust, Intake


Style
Short stroke


Material
Steel


Size
+0,843" - 0,8435"


Model
Race Series®


Product name
Pusher


Type
Hydraulic


Units
Set of 4