Set Idle on Supercharged motor?
03-20-2004, 04:35 PM
#11
Registered
Thread Starter
I was thinking the same with the level. I cant remember
where the brass style on holleys is placed.
this is where I have it now.
I am getting about 1000 rpm with no surge.
the four corners are all 1\2 turn out and I straightened
the butterflies someone tweeked.
I had to adjust the throttle stops on all to have approx
.010 opening.
The plugs are getting brownish and cleaner.
There is probrobly only 10 min running time on engine
with no load.
How long does it take for the rings to seat?
Maybe at this point I will change the oil and filter and pull this engine off the stand and try the other engine thats the one we are planning to dyno.
lets see what we have to do on the dyno
Plugs,timing, pulleys. then with that info I can
go back to this engine.
where the brass style on holleys is placed.
this is where I have it now.
I am getting about 1000 rpm with no surge.
the four corners are all 1\2 turn out and I straightened
the butterflies someone tweeked.
I had to adjust the throttle stops on all to have approx
.010 opening.
The plugs are getting brownish and cleaner.
There is probrobly only 10 min running time on engine
with no load.
How long does it take for the rings to seat?
Maybe at this point I will change the oil and filter and pull this engine off the stand and try the other engine thats the one we are planning to dyno.
lets see what we have to do on the dyno
Plugs,timing, pulleys. then with that info I can
go back to this engine.
03-21-2004, 12:33 PM
#12
VIP Member
This is a revisement I received when I was a Barry Grant dealer.
If the float level is to high you will see it trickle out the boosters while idling.
You have to put a load on it to fully seal the rings.On some dynos they have a blowby meter that measures cfm that will tell you how well the rings seat.
At only 1/2 turn out you may have to change the Idle feed restrictor.Its sounds like you may have to change the throttle blades if someone bent
them to get more air . usually you just drill the hole in it if it just a Holley carb .But being a Barry Grant you have enfanat adjustably
If the float level is to high you will see it trickle out the boosters while idling.
You have to put a load on it to fully seal the rings.On some dynos they have a blowby meter that measures cfm that will tell you how well the rings seat.
At only 1/2 turn out you may have to change the Idle feed restrictor.Its sounds like you may have to change the throttle blades if someone bent
them to get more air . usually you just drill the hole in it if it just a Holley carb .But being a Barry Grant you have enfanat adjustably
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
03-21-2004, 04:59 PM
#13
Platinum Member
It has been my experience that power valves that open at 6.5" hg open too soon and fouled the plugs when I was under way at slow speeds. If the plugs did not foul, because of the superior ignition of the MSD system, then the transom of the boat was black. I cured this problem by switching to power valves that opened at 2.5" hg. The later opening power valves cured my slow speed fouling.
I also referenced my vacuum signal from the supercharger to the intake manifold by closing off the vacuum port with a machine screw and red locktite inside of the Holley Dominator. After this was accomplished I drilled a hole through the side of the dominator and pressed a 1/4" I.D. stainless steel tube dipped in red locktite into the hole. A hole must be drilled and tapped in the engine manifold where a 1/8 npt 1/4"hose barb will be screwed and locktighted in place. A section of quality hose, preferably Gates, will then connect the two. This will give the power valve its signal from the vacuum at the intake manifold rather than through the supercharger. Remember, if the power valve shuts when you are really pushing that engine then a lean condition will occur and a hole in the piston will happen.
Best of Luck
Ed
I also referenced my vacuum signal from the supercharger to the intake manifold by closing off the vacuum port with a machine screw and red locktite inside of the Holley Dominator. After this was accomplished I drilled a hole through the side of the dominator and pressed a 1/4" I.D. stainless steel tube dipped in red locktite into the hole. A hole must be drilled and tapped in the engine manifold where a 1/8 npt 1/4"hose barb will be screwed and locktighted in place. A section of quality hose, preferably Gates, will then connect the two. This will give the power valve its signal from the vacuum at the intake manifold rather than through the supercharger. Remember, if the power valve shuts when you are really pushing that engine then a lean condition will occur and a hole in the piston will happen.
Best of Luck
Ed
Last edited by CigaretteFirefox; 03-21-2004 at 07:25 PM.
03-27-2004, 02:01 PM
#15
Registered
Thread Starter
Originally posted by Fuhgedaboudit
gee gerry, when you put those motors in your car the exhaust is gonna right into your face!!!
gee gerry, when you put those motors in your car the exhaust is gonna right into your face!!!
The tailpipes go right around my head.
Give me some of that Chit!
