25+mpg 4.0l ohv build

[gaz]

Naddanme:

I urge you to consider

replacing your timing set verses waiting for it to go. Additional prudent moves for an OHV 4.0 with 140k, a new oil pump, water pump and inspect those push rods and rockers; the first 2 (3) items will ensure a solid dependable power plant, inspecting and taking the appropriate action with the valve train will ensure the best possible performance ..)

HOORAA Ranger driver!!

 

[Naddanme]

Timing been taken care of. Hadn’t really thought about replacing the other stuff if it isn’t giving me any problems. But it’s not a bad idea. Thanks

 

[gaz]

Will a 2.9 steering pump work with the 4.0 OHV in my BII?

 

[gaz]

Today I have the new set my Mahle 2001, SOHC pistons for my 1994 OHV 4.0L. They weigh within 1.4g from lightest to heaviest; I can now balance this bottom end to within 0.10g rotational and reciprocating weight. This is a 10% performancein gain in fuel economy, hp and tq...FOREVER!

Really, really makes me wonder why this isn't done on EVERY NEW autombile, from the factory; clearly they NEED us to use ten percent more fuel...FOREVER???

A note of IRONY, in auto racing where fuel economy is most probably the least concern, EVERY ENGINE HAS THIS PROCEEDURE PERFORMED!!!!!!!!!!!!!!! I wonder why, don't you?

 

[Blmpkn]

I'd probably say thank manufacturer stockholders for the lack of a balancing that in-depth. Such things would cut far too deep into profit margins. 2 extra mpg be damned.

My 2 cents though.. The level of balancing we get from production motors is really more than sufficient honestly. Race motors get balanced to such a degree because they're just that.. Race motors.

Think about the average rpm of a motor over it's lifespan.. A race motor will live its entire life at 6k.. Minimum. It needs the anal-retentive balancing for longevity. As you said, racers don't give a.f how many mpgs they get. All we care about is power... and how many races/passes we can get from a motor before 8k rpm shakes it apart.

The average motor though, probably lives 99% of it's life between 2500-3000 rpm, where even the crummiest of factory balances is usually good enough to last over 200k miles.

I'm really rooting for this build. Youve clearly put a metric s-ton of thought into it, I hope you achieve the results your after.

 

[gaz]

Which year SOHC oil pans can be used with the OHV to benefit from the built in girdle?

 

[DPDISXR4Ti]

Bump, bump.... How's this project going?

 

[gaz]

DPDISXR4Ti,

Hello,

My needs to drive the Bronco changed, so to drive it now, I bought a complete running 94 Explorer to get the computer, wire harness and accessories I was missing for the swap.

The actual engine I'm building is going to take me another 4-5 months due to my budget. If this engine isn't ready by the end of August, I will stop everything else and finish it as I want 2-3 months of solid use on paper to feel comfortable for winter reliability.

 

[bobbywalter]

Hard core.


Mega squirt is the key.

 

[gaz]

Bobbywalter,
If The "Mega-Squirt" system is capable of improving the fuel efficientcy +05.0% or more in the BII with my built 4.0l, then I will consider it.

 

[lil_Blue_Ford]

Will a 2.9 steering pump work with the 4.0 OHV in my BII?

That I‘m not sure of, but have you considered doing an electric power steering pump? @PetroleumJunkie412 did one in his Ranger and I’m working on repeating the process.

 

[lil_Blue_Ford]

Bobbywalter,
If The "Mega-Squirt" systemiis capable of improving the fuel efficientcy +05.0% or more in the BII with my built 4.0l, then I will consider it.

Maybe talk with @PetroleumJunkie412 , he’s running megasquirt

 

[Blmpkn]

There's no way megasquirt wouldn't increase efficiency.. mabey not 5%.. but still.

 

[gaz]

That I‘m not sure of, but have you considered doing an electric power steering pump? @PetroleumJunkie412 did one in his Ranger and I’m working on repeating the process.

I have learned that the 2 systems have equal output and only slight differences in the output to the hoses, the hoses are the key; so using the hose for the gearbox is best, the pumps can be interchanged with only slight output angle differences. In a pinch, a 2.9 hose could be used for a 4.0 and vice versa...in a pinch.

 

[gaz]

There's no way megasquirt wouldn't increase efficiency.. mabey not 5%.. but still.

5% of 30mpg is 1.5mpg, a 1½ mpg increase appeals to me but 10% would be a done deal!

Reading through the megasquirt web page, history and product information reminds of being given 2 sticks instead of a spoon, to eat a bowl of soup. While at first I was bewildered and lost, I grew to appreciate the simple genius and efficiently of the 2 sticks and they are now my go-to soup utensils???

Doing the math, a 5% increase in fuel economy would save me $172/year @$4/gl; I expect to drive 10k mi/year, so it would take 6 years to pay for itself if I can install and set up a Megasquirt system for $1,000 or less. By ten years, not accounting for fuel cost increases I would pocket $537, while a 10% would pay for itself twice as fast (3years) and the savings at the 10 year point would be, arguably, more than doubled