kinger
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Damn hammer, I'm the same way as you and its soo expensive. converting to a apex front end on mine and spent $300 in new bolts! Wanted all new everything. IN the end the resto of my sled will probably have a grand of un-necassary "little things" to make me feel better 
TWIN TURBO said:HAMMER
I used that Kenny Bell boost-a-pump last year with my stage II SC last year, worked fine but I wasn't pushing it 11 lbs 1000' elev. After all the research it sounded right to me.
aja636
How do you know it's shutting off with pressure? If your listening to it with engine off on initial start up I'm preety sure the ECU has a time-out feature to prime the system on start-up and if it does't see RPM it shuts down. I don't believe there is any pressure reference for the ECU to shut down, that would be the purpose of the bypass pressure regulator on the sled. It will maintain fuel pressure based on the vacumn signal or in the case of our boosted units an increase in pressure.
your right, when I installed the tank I was testing all the fittings and etc. and when the pump was cycling the return line was pouring fuel back into the tank. So the pump is just running for a set time, and not pressure referenced. Sorry to misinform anyone, I am still learning this boost stuff. Thank all you guys for your input. Tons of knowledge to be gained here!!!
aj
TWIN TURBO
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I forgot to mention, It seems most of the guys are running their big msd pumps right out of the ECU in place of ths stock pump or worse yet running 2 pumps. BAD BAD BAD. I learned the hard way many times, sometimes I also need a hit in the head with a large blunt item ie. hammer, that making assumptions is more times wrong than right. First of all you don't know what kind of load the ECU can handle. Is their a simple relay in the ECU or is there some trick variable voltage circuit that changes voltage to the pump based on what kind of load the injectors are drawing. When it comes to electronics anything is possible.
Don't assume, install a relay, the kind that is used in almost every automobile on the road today. Let the ECU switch the relay and supply the relay with 12 ga. wire right off the battery, be sure to fuse it at the battery also. NOW you have 12+ volts to power the very voltage sensitive fuel pumps, and then and only then can you have the fuel delivery capacity you think you have.
P.S. Hammer $300.00 for 30HP is a bargain.
Don't assume, install a relay, the kind that is used in almost every automobile on the road today. Let the ECU switch the relay and supply the relay with 12 ga. wire right off the battery, be sure to fuse it at the battery also. NOW you have 12+ volts to power the very voltage sensitive fuel pumps, and then and only then can you have the fuel delivery capacity you think you have.
P.S. Hammer $300.00 for 30HP is a bargain.
So far with the 30-shot I'm bringing around 1lb back with me at the end of most days. I'm sure I could use it all if I got extra happy with the button. If I set it up for 260-270hp (at 8000ft) I'll want to carry an extra 4lb carbon fiber bottle in my pack so I can have fun all day and not worry about running out. Those buggers are $450.00. We'll see what happens once the snow starts to fly....I'll probably give in to temptation....lol
Also thinking of using these Gates clamps. Fuel leaks cause fires so I don't want to take any chances and I'll use a good old stainless worm gear clamp as a safety backup.
Gates PowerGrip Hose Clamps
Don't trust your engine to just any hose clamps. Get a grip and get the revolutionary Gates PowerGrip Hose Clamps. Apply heat to these heat-sensitive clamps and they shrink down onto the hose/fitting to form a leak-free connection. Our clamps work equally well on out-of-round fittings and with stainless steel-braided hoses or stainless steel-braided hose sleeving.
Available in sizes 1/4" ID through 3-1/8" ID.
Ok, I couldn't even make it a week, I'm going to do it....lol
Minimum purchase was $100.00 and they do not stock them so they are making me 5 of the 415 stainless check valves. If anyone wants to set their sled up the same way I'll have 3 extra and will sell them at cost $20.00 plus shipping.
Apex Man
Pro
TWIN TURBO said:I forgot to mention, It seems most of the guys are running their big msd pumps right out of the ECU in place of ths stock pump or worse yet running 2 pumps. BAD BAD BAD. I learned the hard way many times, sometimes I also need a hit in the head with a large blunt item ie. hammer, that making assumptions is more times wrong than right. First of all you don't know what kind of load the ECU can handle. Is their a simple relay in the ECU or is there some trick variable voltage circuit that changes voltage to the pump based on what kind of load the injectors are drawing. When it comes to electronics anything is possible.
Don't assume, install a relay, the kind that is used in almost every automobile on the road today. Let the ECU switch the relay and supply the relay with 12 ga. wire right off the battery, be sure to fuse it at the battery also. NOW you have 12+ volts to power the very voltage sensitive fuel pumps, and then and only then can you have the fuel delivery capacity you think you have.
P.S. Hammer $300.00 for 30HP is a bargain.
Like twin turbo says I'm going to use a relay for the simple fact that I don't like the tiny wires supplying current to the stock pump anyway. Like I said in my first post "it's the little things that bother me". I also found a billet fuel tank outlet on ebay for a Yamaha Rhino ATV that was machined and drilled for more fuel flow. The fuel passages ID are 5/16" and a 3/8" ID hose fits perfect over the hose barb ends. I'm having my son (tool and die maker) make a special cover plate to replace the stock pump assembly. I'm also going to add a 3/8" 'T' inside and split off into 2 in-tank filters. I also purchased an ACDelco GF642 fuel injection filter for the MSD pump high pressure outlet side. This model of filter is stainless steel and has both inlet and outlet on the same side. It also comes with a clamp to mount it. I will measure the stock and MSD pump current draw when I get a chance and post the findings if anybody is interested. I also will take pictures of all the pieces and parts before and after the install and post them.
Moon
