.660 vs .625
I wouldn’t be a bit surprised if Lance (IGN-1A) had his hands in the development of the ABS system back in the day. I’m being serious. He’s a ridiculously smart guy who has an impressive family history of automotive inventions.
TECH Enthusiast
Joined: Aug 2021
Posts: 507
Likes: 190
How to destroy the Valve Train Hi "70" thanks.
My "joke" was an "automatic" way to Brake (damage) to Valve Train.
MOST here offer little advice about Valve Seat Pressure Requirement.
MANY here ask for advice about Oil Pressure.
The HYD Roller Lifter has an internal piston that is moved by Oil Pressure.
Thus Oil Pressure affects the Valve Seat Pressure Requirement
So I ask again, What is your Seat Pressure?
Valve Bounce will destroy (drop) the valve.
Lance, a Legal American
My "joke" was an "automatic" way to Brake (damage) to Valve Train.
MOST here offer little advice about Valve Seat Pressure Requirement.
MANY here ask for advice about Oil Pressure.
The HYD Roller Lifter has an internal piston that is moved by Oil Pressure.
Thus Oil Pressure affects the Valve Seat Pressure Requirement
So I ask again, What is your Seat Pressure?
Valve Bounce will destroy (drop) the valve.
Lance, a Legal American
Thread Starter
On The Tree
Joined: Apr 2024
Posts: 129
Likes: 22
this is the beehives PSI Valve Springs – Beehive Springs – LS 1511 ML
This is all I know about the springs ,
Valve Seals Spring specs are as follows:
•155 lbs @ 1.780"
•380 lbs @ 1.180"
•400 lbs @ 1.130
•Coil bind @ 1.070"
I know a little bit about engines but I do not know what seat pressure actually means. I belive it is the pressure that the valve seats have from the springs.
- SPRING O.D. 1.290″
- OUTER ID 0.630″
- SEAT PRESSURE 130 lbs @ 1.800″
- OPEN PRESSURE 370 lbs @ 1.175″
- RATE lbs/in. 384.0″
- MAX LIFT 0.625″
- COIL BIND 1.100″
This is all I know about the springs ,
Valve Seals Spring specs are as follows:
•155 lbs @ 1.780"
•380 lbs @ 1.180"
•400 lbs @ 1.130
•Coil bind @ 1.070"
I know a little bit about engines but I do not know what seat pressure actually means. I belive it is the pressure that the valve seats have from the springs.
this is the beehives PSI Valve Springs – Beehive Springs – LS 1511 ML
This is all I know about the springs ,
Valve Seals Spring specs are as follows:
•155 lbs @ 1.780"
•380 lbs @ 1.180"
•400 lbs @ 1.130
•Coil bind @ 1.070"
I know a little bit about engines but I do not know what seat pressure actually means. I belive it is the pressure that the valve seats have from the springs.
- SPRING O.D. 1.290″
- OUTER ID 0.630″
- SEAT PRESSURE 130 lbs @ 1.800″
- OPEN PRESSURE 370 lbs @ 1.175″
- RATE lbs/in. 384.0″
- MAX LIFT 0.625″
- COIL BIND 1.100″
This is all I know about the springs ,
Valve Seals Spring specs are as follows:
•155 lbs @ 1.780"
•380 lbs @ 1.180"
•400 lbs @ 1.130
•Coil bind @ 1.070"
I know a little bit about engines but I do not know what seat pressure actually means. I belive it is the pressure that the valve seats have from the springs.
Thread Starter
On The Tree
Joined: Apr 2024
Posts: 129
Likes: 22
Thanks that makes more sense. I was thinking valve Set at 1.800 “ might mean they are too long and cools hit the piston. My only other thing is what safe RPM I can run. I think eith a fast 92 and BTR shaft mount rocker mounts I should be able to make power to 7k if the springs are up too be task
