Big Bore
New member
Anyone using it? What pressures? Mine has the port, and I've contemplated using it before but sidelined the idea. Now I've come back around to it. Pros/Cons?
In looking at the entire gasser turbo perf world boost ref is used overwhelmingly from what I can see.
I think it would also go a long way in increasing the ****ting electric fuel pump lifes with the high perf high pressure high flow we ask out of our pumps. When you consider a DD setup likely only needs max pressure a small fraction of the total pump flow time. Being able to have pressure dropped to 45psi 80-90% time compared to running 65-75psi 100% of the time I would think would have a postive effect on pump life.
I would love to see the dyno results between 45psi and 60 or 70 or whatever people think works better.
I've consistently made 0.00 additional horsepower with more pressure. I run 60 because I had to pick a number. It doesn't honestly matter. Why run the risk of a runaway for no gain?
I would love to see the dyno results between 45psi and 60 or 70 or whatever people think works better.
I've consistently made 0.00 additional horsepower with more pressure. I run 60 because I had to pick a number. It doesn't honestly matter. Why run the risk of a runaway for no gain?
Charles how much fuel did the regulator piss out when it ruptured?
While it may not have effected your hp I do wonder once over 3k on motors that are running all the pw they have window for with 400% and larger nozzles if they are getting complete refills @ only 45 psi. I do not know where that wall is but as rpms go up the window to refill goes down. Considering a fixed injection volume or pw icp the more minimum pressure you are going to need to refill the same volume. That may not show up on a 3 second wot dyno run but in a 1/4 or on the street that lose would become cumulative and you could end up with an issue.
While there are always possibilities. Of issues such as runaway fueling has it ever happened that anyone can recall where someone blew the diaphram and ended up blowing their engine from it? (BTW that was not meant to be retorical or a SA comment)
Not saying it can not happen but wouldn't you think if this was a reasonable risk you would see more posted on it by the gassers etc. I would think a check valve in the air regulator would eliminate much of the risk as would the choice of boost tap location to make sure gravity would take it away from not into the heads.
Also as we are using boost not vaccum a leaking diaphragm would have the fuel pushed out of it by the boost not up the line and if the leak was so large to put fuel say the full fuel pressure to the hose woukd that not cuase a huge drop in fuel pressure into the heads and thus injectors. I would think a one way air/fluid/oil check valve between the air reg and fuel reg would remove most all the threat of fuel blowing into the manifolds. Not sure if they are diesel compatable but are made of an alloy for use with air/water/and oilsa nd can be had for 6-10 dollars. Its not like we are looking for long term exposure here anyways just a stop gap to preventis in the smal chance it happens.
Especially for pumps that use brushes and culmulators etc the lower the pressure the lower the volts the less eroding wear of the parts. On any motor the less work the longer the duty life. Being able to run 45psi instead of 40% all but at those times under boost that much longer the pumps live as I see it. Maybe I am wrong but it makes sense at least on its face to me.
45 psi base pressure boost ref port > hose > one way check valve > hose > air reg set to 20 psi (or boost fooler would work as well) would set max fuel psi to 65psi @ 20 psi boost and higher > hose > boost tap locaton.
If one of the first sections was clear hose you would have clear sight of any fuel infiltration at a glance. As long as it can handle 20 psi and the heat right at the reg which is not bad where mine is at it should be ok I would think. Have not looked to see what ratings clear hose can have.
I run an old school 20 PSI dual popoff valve to my regulator with a .025 orifice between the blowoff valve and the manifold. The orifice prevents flow from causing a big boost loss and would also limit the fuel comming into the intake and would start spilling fuel out of the dual popoffs since the pressure would start to build between the regulator and the orifice.
7000+ rpm here you come.
I'm in. Where do I get this mod?
It's super easy. Remove your driver's side CAC tube from the intake spyder/compressor outlet and rotate it upward. Pour 1 gallon of #2 diesel or equivalent into CAC tube.
Reinstall tube onto intake spyder/compressor outlet. Crank engine.
If high rpm mod does not self-initiate, then gently rev engine to approx 1000rpm and enjoy...
Next time I have the tubes off I'm going to take a pic doing that and call it the Chucky high rpm mod "before pic". After pic will be a mushroom cloud.
:rockon: