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GerhardH · 10-08-2020, 01:24 PM

After I got the right washers, finished the valve and spring assembly heads.

Installed height between 1.725" and 1.730" (origin is 1.750").
Valve pressure measured by 1.750" = 132 ft lbs. , second measurement after movement of the spring: 126 ft lbs. and third measurement after further movement of the spring 121 ft lbs.

Valve pressure measured by 1.730" = 130 ft. lbs. seat pressure
Valve pressure measured by 1.725" = 132 ft. lbs seat pressure

(The Summit 174000 valve spring kit has the following pressures.Seat Pressure at Installed Height 1.750" (lbs):125 lbs. Open Pressure (lbs):325 lbs.)

10-08-2020, 01:24 PM	#165
GerhardH Registered User Join Date: Aug 2017 Location: South Germany Posts: 527	Re: My 1968 C-20 Golden Anniversary Project After I got the right washers, finished the valve and spring assembly heads. Installed height between 1.725" and 1.730" (origin is 1.750"). Valve pressure measured by 1.750" = 132 ft lbs. , second measurement after movement of the spring: 126 ft lbs. and third measurement after further movement of the spring 121 ft lbs. Valve pressure measured by 1.730" = 130 ft. lbs. seat pressure Valve pressure measured by 1.725" = 132 ft. lbs seat pressure (The Summit 174000 valve spring kit has the following pressures.Seat Pressure at Installed Height 1.750" (lbs):125 lbs. Open Pressure (lbs):325 lbs.) Attached Images __________________ Best regards GerhardH! Members met: 68 short step, 68bowtie, 72c20customcamper, botmfedr1, C/10 King, Chevyland, cornerstore, dmjlambert, fun in dirt, GMan69, Ol Blue K20 1968 CHEVROLET C20 Custom Camper 50th Anniversary, Long bed (LB) 8', 327 V8, Air Condition (AC), Power Steering (PS), Power Brake (PB), Z62 Custom & Comfort Appearance, Turbo Hydramatic TH 400 http://67-72chevytrucks.com/vboard/s...d.php?t=760400 Last edited by GerhardH; 10-08-2020 at 01:39 PM.