M8 Quick Install Adjustable pushrods, 3/8 OD tube, 0.134" wall thickness, set of 4 pushrods. Individual length Exhaust and Intake pushrods, Install WITHOUT the removal of rocker covers.
This is the strongest ‘Quick’ install pushrod on the market! The strength and rigidity of this quick install pushrod is second only to heavy duty one piece pushrods. Our tube material starts out as 7/16” rod OD, it then gets turned down to 3/8” OD leaving heavy duty 7/16” – 20 threads for the base and jam nut. The jam nut slides up the pushrod, the base then loosens up into the pushrod to shorten length and allow quick install access.
Includes pushrods and 6061 Billet pushrod tube kit. Provides even more working room when adjusting the pushrods than other tube kits on the market. Tube kit contains retaining clip, inner tube, spring cup, lower tube and washers/spacers (M8 use thin spacer, TC use thick spacer). See Feuling gaskets kits or Cam install kits for pushrod o-rings. These will accept either M8 or TC pushrod tube o-rings.
CORRECT PUSHROD/LIFTER ADJUSTMENT REQUIRES STARTING WITH FULLY PUMPED UP LIFTERS!
QUICK INSTALL PUSHRODS HAVE 7/16-20 THREADS PER INCH, 0.050” ADJUSTMENT PER TURN. 2 TURNS = 0.100”
TROUBLE SHOOTING NOISY VALVE-TRAIN
1. Lifter adjustment - Starting with a fully pumped up lifter, from zero lash put 0.90” - 0.100” of pre-load on Feuling® hydraulic lifters
2. Lifter to lifter bore clearance out of spec, Feuling® recommends a clearance of 0.001” - 0.0015” for proper oil psi at lifter
3. Pushrods flexing and hitting pushrod tubes - look for a shiny ring witness mark around pushrod normally seen up towards the cylinder head
4. Low oil pressure - inspect pressure relief valve in camplate, oil pump/camplate wear
5. Pushrod center oil hole plugged
6. Clearance for roller rocker arms on under side of rocker box covers
7. Steep ramped camshafts, valves closing so fast the valves bounce off valve seats - see Feuling® Beehive® valve springs
8. Excessive crankshaft runout
9. Gear drive camshafts, excessive gear drive backlash or excessive crankshaft runout
10. Rocker arms/bushings out of tolerance
11. Valve spring clearance to lower rocker box housing
12. Valve spring coil bind and or valve spring harmonics - match up valve spring open height with camshaft peak lift
13. Leaky/broken piston cooling jets
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Disclaimer:
“Qualified Manufacturer Declared Replacement Part” means any aftermarket part intended to replace an original equipment emissions related part and which is functionally identical to the original equipment part in all respects which in any way affect emissions (including durability), or a consolidated part, that has been evaluated and declared by the manufacturer to meet this definition and carry this categorization and designation label. This manufacturer has declared in writing that it has documentation, based upon sound engineering judgment, indicating the replacement part does not reduce the effectiveness of any required emission control device and it does not cause the modified vehicle/engine/equipment to exceed applicable emissions standards for that make/model/year fitment(s) advertised.
