Videos Contact Us
Search   
Skip Navigation LinksSkip Navigation Links
 

GO-KART & JR. DRAGSTER VALVE SPRINGS, RETAINERS, & LOCKS FOR BRIGGS FLATHEAD 5HP ENGINES

VALVE SPRINGS FOR BRIGGS FLATHEAD STOCK CLASSES
Competing in stock class events can be challenging. Every little “edge” can make a world of difference. Every component of your engine must be of the highest quality. Comp Cams® GoParts™ is proud to offer you the best stock springs in the world, for use on stock class Briggs motors.
• Our stock valve springs have extended life over other stock springs
• Precision ground seats for a perfectly square spring
• Consistent pressures and superior durability over OEM configurations

SINGLE & DUAL VALVE SPRINGS FOR BRIGGS FLATHEAD MODIFIED CLASSES
GoParts™ offers several different Dual Springs for modified Briggs engines. Springs, locks, lower and upper spring retainers are available separately or in kits.


VALVE SPRINGS
Single Exhaust Valve Springs: #GP958-2
Class: Stock
Length
: 1.420"
Seat @ 1.050: 16 lbs
Nose @ 0.800": 29 lbs


GP958-2
  SPRINGS ONLY 
Two new #GP958 stock class exhaust valve springs
Single Outlaw Valve Springs: #GP961-2, #GP961-KIT
Class: Outlaw Stock & Controlled Stock
Valve Lift: Up To .325"
Seat: 20-25 lbs
Nose: 45-50 lbs
Outlaw Stock and Controlled Stock single valve springs for valves lifts to .325” and 7500 RPM. Just enough spring to keep stock valves under control without using up too much horsepower. Made with Chrome Silicon steel.

GP961-2
SPRINGS ONLY
Two new #GP961 valve springs
Dual Valve Springs: #GP959-2, #GP959-KIT
Valve Lift: Up To .380"
Seat: 32-35 lbs
Nose: 80-100 lbs
These Dual Springs provide excellent pressure for up to .380” valve lift (also great for Honda Opens). Manufactured from high tech Chrome Silicon steel and features low stress levels for long life.

GP959-2
SPRINGS ONLY
Two new #GP959 dual valve springs 


GP959-KIT

COMPLETE KIT
 Two new #GP959 dual valve springs
 Two new #GP4787 billet aluminum upper retainers
 Two new #GP759 billet aluminum lower retainers
 Two  new #GP642 locks (four pieces)
Dual Valve Springs: #GP960-2, #GP960-KIT
Valve Lift: .380" to .440"
Seat: 35-36 lbs
Nose: 90-110 lbs
Dual Springs provide superior strength for valve lifts from .380” to .440”. Manufactured from high tech Chrome Silicon steel and features low stress levels for long life.

GP960-2
  SPRINGS ONLY
 Two new #GP960 valve springs 


GP960-KIT
COMPLETE KIT
 Two new #GP960 valve springs
 Two new #GP4787 billet aluminum upper retainers
 Two new #GP759 billet aluminum lower retainers
 Two new #GP642 locks (four pieces)
Dual Valve Springs: #GP965-2, #GP965-KIT
Class: Jr. Dragster & Open Blockzilla
Valve Lift: Up To .550"
Seat: 35-40 lbs
Nose: 142-150 lbs
Designed specifically for valve lifts up to .550” in Jr. Dragster and Open Blockzilla engines making 30+ horsepower. Constructed from Pacaloy®, a high tech spring material used in all high performance engines. Dual Springs are the ultimate in spring technology.

GP965-2
  SPRINGS ONLY
Two new #GP965 valve springs


GP965-KIT
COMPLETE KIT
 Two new #GP965 valve springs
 Two new #GP759 billet aluminum lower retainers
 Two new #GP642 locks (four pieces)
RETAINERS
Aluminum Retainers: #GP4787-2 (upper), #GP759-2 (lower)
Usage: For dual valve springs
Material
: Aluminum


GP4787-2
   Two new #GP4787 billet aluminum upper retainers


GP759-2
   Two new #GP759 billet aluminum lower retainers
Titanium Retainers: #GP647-2 (lower)
Usage: For dual valve springs
Material: Titanium
GoParts™ Lightweight Titanium Retainers are made from a heat treated titanium alloy for maximum stiffness and minimal warpage. These new retainers provide the highest tensile strength available in any Briggs retainer and are 1/2 gram lighter than aluminum.

GP647-2
 Two new #GP647 Titanium lower retainers for GoParts™ dual valve springs
LOCKS
Valve Locks: #GP642-2
Usage: Dual valve springs


GP642-2
 Two new #GP642 locks (four pieces)

 

EFFECT OF INCORRECT VALVE SPRING SETUP

Proper installation of valve springs is a crucial step in obtaining maximum performance. If your valves springs aren't set up correctly, your engine will never achieve it's full potential no matter what else you do. Dyno testing shows just how much performance is wasted without proper setup.

We do offer specialty tools to aid in proper valve spring setup here...

 

PERFORMANCE
PARTNERS
2007-2011 Copyright by: CompGoParts.com. All rights reserved.