What Happens If My Power Valve Is Too Big

Posted: July-20-2010 at 6:43pm. For the first timer. In your case, this is why changing the power valve opening point to below the idle vacuum level did not improve your rich idle condition.

1. What happens if my power valve is too big fix
2. What happens if my power valve is too big without
3. What happens if my power valve is too big band
4. What happens if my power valve is too big how do i
5. What happens if my power valve is too big on tv
6. What happens if my power valve is too big for a

What Happens If My Power Valve Is Too Big Fix

5 power valve and I should have a 3. I need to know what the correct power valve is, or how to determine what it is. 5 valve it wouldnt idle. At WOT, intake manifold vacuum drops to almost zero. Holley 2300 power valve. Try installing a vacuum gauge sometime, then do some driving. We can start with some basic tuning recommendations. Basically, the power valve is designed to help an engine to deliver a little better gas mileage, and with a race car, fuel mileage is not typically a priority.

What Happens If My Power Valve Is Too Big Without

We know now how much an emission system-equipped vehicle can even provide. Adjust these screws for the most vacuum. Getting really bad gas mileage, would power valve cause it. 5 PV in a stock engine, that you wouldn't notice a slight increase in throttle response (and possibly a corresponding decrease in fuel economy). The 351 or 350's are quite thirsty on gas. Which ever method you use, it's just a guide line to get you started. What this means is that your engine is unable to produce the right amount of fuel.

What Happens If My Power Valve Is Too Big Band

For example, if the engine vacuum of your vehicle is 11-12, a 55 (or 5. This is why you may also have some breathing problems because of these things. So, what exactly can happen when you have a very big power valve? Let's head into the symptoms-.

What Happens If My Power Valve Is Too Big How Do I

To know which power valve you have, all you need to do is look at it. Location: Three Lakes Wi. Selecting the correct power valve. If you intend to mean whether an "open" power valve affects idle or not, the answer is no. But you need to make sure that the correct size is used to ensure optimal performance. A 65 or 75 works pretty well at sea level for a stock engine, and go down from there depending on engine vacuum (the more radical the cam the lower the power valve opening point you need). Any holley made since the early eighties do not need the PV check valve kit.

What Happens If My Power Valve Is Too Big On Tv

We seldom see the need to go any higher, once the carb is correctly dialed in/jetted for the application. Location: Ft. Worth TX. In that 351 you are running, do you have big time specs in that motor? 5 is two steps up from what was stock in my* 2300 (one wich you will most likely not find in your list) and the IH specs calls for a smaller PV and jets than a large population is running. Good luck to the new owner of the Ventura II! I currently put the car in gear and gauge read 5 but was bouncing between 4 & 7. The ideal number of the power valve is half the reading of the engine vacuum. You have to divide the reading you got in half. The valve is held closed whenever sufficient engine vacuum is present. 052-inch in diameter. The accellerator pump is also very important, as it helps avoid a lean condition between the two systems and during any quick/heavy application of the. We know how bad this thing is. What happens if my power valve is too big on tv. Go slowly and count the number of turns it takes to tighten them so you can put them back to the correct location afterwards.

What Happens If My Power Valve Is Too Big For A

That's an excellent question and the Holley carburetor designers offer an equally elegant answer. Im getting spit back through the carb, and occasionally in the exhaust. If your PV is too big, it will open sooner then you need and cause the motor to run rich. What happens if my power valve is too big for a. 408 Pontiac, #62 heads, 274 XE cam, Eddy RPM intake, Quick Fuel Slayer 750, Carter Super Street fuel pump, Mallory Unilite, Turbo 400 with shift kit, Continental "Jim Hand Special" 3200 stall, 12 bolt 4. I understand I need to plug up the original reference port on the bottom side of the carb but where do I need to drill the carb body for my new reference port for the power valve? Carb jetting is 68 prim and 76 sec. I do not trust the rubber plugs.

I tried to match that carb to this one I got from a buddy. O. K. Cuda, comp ratio before eddy heads was 175 hot and cranking over now is 125 so Im assuming 8. It's appearing that once I'm into the secondaries is when it smooths out. There is a FINE line to how much you can crank open the idle speed screw without messing up the idle circuitry. What happens if my power valve is too big band. Neither too high nor too low of the value of the power valve is going to work properly for the engine. Considering these problems that arise because of an incorrect power valve size, you need to make sure that you pick the right one you need. Holley's seem to like to idle on the primary's only so your secondary idle screw should be closed off to zero. Ok for racing but you lose economy on the street and tend to foul plugs at low speed. Lee, Tom got you covered here.