What is this part called? It goes into the intake manifold beneath the governor. Does anyone know if they are available anywhere? As you can see mine is badly damaged. GMC 228
I had one of those on my '40 (216) my impression was it was a choke in the manifold ( to maybe help prevent overloading the engine under heavy work ) ???
I notice the car engine is listed as 85 HP and the truck at 78 HP , same engine . I never reinstalled it , I like the way the truck runs at its best .
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
I had one of those on my '40 (216) my impression was it was a choke in the manifold ( to maybe help prevent overloading the engine under heavy work ) ???
I notice the car engine is listed as 85 HP and the truck at 78 HP , same engine . I never reinstalled it , I like the way the truck runs at its best .
Dusty, did your 216 seem to have more power without it?
Thanks guys. I love the restrictor plate comment! "Took the restrictor plate off the red bird. It's not exactly legal. We gotta keep it on the down low" LOL
That is to prevent over-revving the engine in the lower gears of a big rig with a Brownie and/or a 2-speed rear end. The really low ratios needed for pulling heavy loads needed an engine with lots of torque, not necessarily a bunch of high-RPM horsepower. That cone was probably designed to keep the engine to a safe top speed in the lower gears. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Given what's been said these are my thoughts. I plan on using the truck around my property with only occasional street use. I assume that the cone increases velocity of the A/F charge into the intake in lower rpm ranges. I'm guessing it will be desirable for me to use given my planned usage of the truck.
It has nothing to do with "velocity". It's simply a way to strangle off the air and prevent high engine speeds. A flat plate with a hole the same size as the small end of the cone drilled into it would accomplish the same results- - - - -the cone-shaped restrictor just minimizes the turbulence involved in restricting the airflow. Just replace that part with an insulator like Chevy engines use, and resist the temptation to run at wide open throttle in the lower gears. That restrictor was an attempt to make commercial engines idiot-proof, but the idiots just found more creative ways to blow up engines.
If you insist on using that restrictor, just have a machinist make a phenolic block that duplicates the flange, and transfer the cone into the new part. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
