Model 100 rotary pump fuel supply help!! July 24, 2015 11:18AM
Looking for info on bypassing stock lift pump and feeding it with either gear pump or electric what psi what gph
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Re: Model 100 rotary pump fuel supply help!! July 25, 2015 12:18PM
I just used Holley gas electric pump simple and very effective
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Re: Model 100 rotary pump fuel supply help!! July 25, 2015 06:58PM
Depends upon the capability of your model 100. The good ones need 80 psi @ 2 gpm at the minimum.
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Re: Model 100 rotary pump fuel supply help!! July 26, 2015 01:07PM
As of now it's stock but I'm going to 13mm and bigger injectors
Do you have a recommendation for injectors
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Re: Model 100 rotary pump fuel supply help!! July 26, 2015 10:57PM
Use the Mallory 140, available from Summit. I have been using one for years and made for higher pressure systems. I called Mallory before I got mine and it is diesel fuel compatable also. Will work!
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Re: Model 100 rotary pump fuel supply help!! July 26, 2015 11:45PM
Why don't u save your money and just modify your stock lift pump? They have plenty of capacity if done right.
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Re: Model 100 rotary pump fuel supply help!! July 27, 2015 02:05AM
Find an air conditioner bracket & pulley off a 66 or 86. Mount you a vickers pump on it with a 4" pulley. Fashion ya a relief valve back to the suction side to adjust the pressure. Plenty of pressure & volume. & you don't have to remember to turn on the switch.
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Re: Model 100 rotary pump fuel supply help!! July 27, 2015 02:07AM
tuthill belt drive. Columbus diesel usually have in stock.
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Re: Model 100 rotary pump fuel supply help!! July 27, 2015 05:02AM
How do I do that
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Re: Model 100 rotary pump fuel supply help!! July 27, 2015 05:04AM
How do I modify the lift pump
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Re: Model 100 rotary pump fuel supply help!! July 27, 2015 02:09AM
I have a high lift model 100 and i am actually dual feeding the final fuel filter. I took the normal fitting and ran a t into it. On one end of the t is the normal fuel injection transfer pump (basically running the same route it normally would) and the other side has a 60 psi 5.5 GPM fuel pump from northern tool. Both supply pumps have their own port in the tank. I have a 0-100 fuel pressure guage and you can actually see when the mechanical pump doesnt keep up cuz the rpms drop the electric pump really picks up the slack. Its the best of both worlds for my set up.
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Re: Model 100 rotary pump fuel supply help!! July 27, 2015 03:16AM
Call up Fair Valley and get a good belt driven. The more pressure and volume the better. We run a dual feed pump and have the supply pump running 140 psi and 6 gpm.
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Re: Model 100 rotary pump fuel supply help!! July 28, 2015 03:22PM
I ran a harts 14mm model 100 which was dual fed with a set of dual feed harts injectors I ended up running 150-170psi to make the pump happy sure didn't want it to drop below 100 psi I ended up taking the stock lift pump completely off because no way it would keep up we used a electric pump with a pressure gauge on dash from experience don't let pressure drop below 50# on track unless you want to replace pump head this is just my model 100 experience
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