Author Topic: My 427 SOHC Build..... Finally the time has come!  (Read 492971 times)

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jayb

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2040 on: January 24, 2019, 03:35:14 PM »

I think where I get hazy is.....  Its getting injected back into the engine at the high RPM pressure of 70 PSI right?  Basically at 14 PSI precharge, I am just ensuring the piston in the chamber completly pushes all the oil out...... and has no effect on what pressure its injected back at?  Does that random line of thought sentence make sense?  :0)

Thanks again

Jason, that is sort of correct.  If all 2-1/2 quarts are injected back into the engine, the last little bit will go in at your precharge pressure.  The first little bit that is injected will go in at the 70 psi pressure.  As the oil is injected, the pressure in the system will drop, but it will always stay above zero, which is what happens if the oil pump pickup runs dry.  So the Accusump will save your engine in that case. 
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

62Falcon390

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2041 on: February 04, 2019, 08:52:46 PM »
how is the accusump working out for you? I have the same oil pan,, and got me thinking about getting one

Rick

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2042 on: February 05, 2019, 01:52:55 PM »
Hey Rick.  Works well.  Installed in prob 1 hour (have mine mounted in the trunk).  I would definitely recommend it!
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

62Falcon390

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2043 on: February 05, 2019, 02:21:17 PM »
mounted in the trunk? don't you have to shut the valve off every time? Im not real sure how they work, guess I should read up

jayb

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2044 on: February 05, 2019, 05:44:36 PM »
You can buy electrically operated remote valves for the Accusump, makes life a little easier...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2045 on: February 08, 2019, 03:57:08 PM »
Exactly.  Sorry, forgot to mention.  The valve is electrically controlled by the ignition.  At ignition on, the valve opens and allows a pre-oil (Prime).  It takes a few seconds, but you can actually see the oil pressure gauge "lift" a little.  Also, its kind of timed perfectly as the EFI does a pre-squirt of fuel to assist with start up.  So an oil and fuel 2 for 1!  :0)
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

62Falcon390

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2046 on: February 09, 2019, 08:06:50 AM »
ok, I will check into this option, thanx

KMcCullah

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2047 on: March 24, 2019, 10:57:10 AM »
I just caught Jared and Lou tweeking on your car, Jason. It sure turned out to be cool hot rod. Bad fast too! I'm having a hard time believing the Red Top Optima battery was bad already. But who knows. They did make some improvements I think. I'm liking the Fitech stuff too.
Kevin McCullah

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2048 on: March 25, 2019, 08:15:09 AM »
Hey Kevin!  Thanks.  You are correct...  The optima was not bad, however they needed things to "Tweak" on for their to be a show  LOL  My old Optima was put back in after the show (however they let me keep the Autozone battery).  Also, the spark plugs (generic) they were putting on for the filming were also for show.  They never took my plugs off, but just made a plug or 2 for the scene.

The Guys, Jared and Lou, were super awesome.  I got to hang out on set for some of the filming.  They managed to dial in my fitech system and clean up some of my amateur wiring.  All in all a great experience!

 
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

Nightmist66

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2049 on: March 25, 2019, 09:51:07 PM »
You can buy electrically operated remote valves for the Accusump, makes life a little easier...

Hey Jay, what kind of restriction do the electric valves have? From what I have seen, the electrics generally have a small orifice which would negate the benefit of the Accusump, IMO. On my install, I used a manual shutoff valve from a local farm/tractor store that is called a "full port". The i.d. is around 9/16" and it is 1/2"NPT in/out. I located it where it is mostly hidden, but I can manually operate the throttle and close the valve at the same time.
Jared


66 Fairlane GT 390 .030 Over 390, Wide Ratio Top Loader, 9 inch, 4.33

jayb

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2050 on: March 26, 2019, 08:12:10 AM »
I've never taken one apart to look, to be honest, but I am always amazed at how much oil can flow through a small orifice.  If your oil pressure suddenly drops to zero when the oil runs away from the pickup, those electric valves flow enough to keep the pressure up, in my experience.  I agree that a large orifice in the valve is better, but I don't think its absolutely necessary.  You are only providing oil to the engine for the brief time when the pickup runs dry.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

Nightmist66

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #2051 on: March 26, 2019, 12:51:40 PM »
I agree that a large orifice in the valve is better, but I don't think its absolutely necessary.  You are only providing oil to the engine for the brief time when the pickup runs dry.

Exactly. That is when you are most dependant on it....  ;)
Jared


66 Fairlane GT 390 .030 Over 390, Wide Ratio Top Loader, 9 inch, 4.33