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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 03-13-2009
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Built up a 4.0? Get in here.

I am ready to pull my 99 4.0 out and start a freshening. Truck is going back to daily driver and I will use it to pull my car trailer when I take my B2 off roading.

I am looking for some input from anyone who has done port work, cam swaps, tuners, headers,etc.... I want to know what worked, what was a waist,gains for each mod or just anything you can give me before I start spending money on parts.

My buddy has an engine shop and I was going to give the heads to him for a mild port job,new seals,new springs and a mill job to make em true and bump the compression a tad.

If there is a decent cam out there that will pick up some power below 4000rpm I wanna know.

Are headers worth the money on a 4.0?
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Old 03-13-2009
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If you are porting and adding a cam then headers will help greatly.

They have a few things for the 4.0. http://www.supersixmotorsports.com/
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Old 03-13-2009
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Isn't most of there stuff for the SOHC engine though? I believe he has the OHV if it's a 99.
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Old 03-13-2009
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Quote:
Originally Posted by 99XLTman View Post
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Isn't most of there stuff for the SOHC engine though? I believe he has the OHV if it's a 99.
I know. They still have a few things for the OHV 4.0. Intake manifold, heads and a few other things for example.
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Old 03-13-2009
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Quote:
Originally Posted by fddriver02 View Post

They have a few things for the 4.0. http://www.supersixmotorsports.com/
All I see is over head cam 4.0 stuff.


I found a Comp Cam that is listed as a OEM replacement for more towing power below 4800rpm. Sounds like a winner.
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Old 03-13-2009
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Heads: 90-01 Ford 4.0 OHV V6 Ranger
Stage 3: Fully ported intake and exhaust ports, complete bowl work, high
polished chambers and exhaust ports, stainless steel valves, 3-angle valve
job, .52 lift CompCams springs and retaainers, valve seals, surfaced, assembled
and ready to install: $1650

Intake Manifold: 90-up 4.0 OHV Ranger
Ported Upper intake: Gasket matched, ported and polished where accessible, painted:
$275
Fully Ported Lower Intake: Injector bung protrusion minimized, ported and polished
throughout, painted: $350

Their main page:

3.8L V6 Mustang T-Bird SuperCoupe
4.0L SOHC V6 Mustang Ranger
Class 7 V6 desert racing engines
4.2L V6 F-150
4.0L OHV V6 Ranger
GM3800 Camaro and Firebird
V6 products that make your life faster...
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  #7  
Old 03-13-2009
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oh yeah. didn't see that. : ] good call. haha
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Old 03-13-2009
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Old 03-13-2009
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Hey! that's the kit i want!
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Old 03-13-2009
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I wouldn't waste my time doing all that, I'd just do a 302 swap. Isn't it really easy on trucks like yours too since they don't have the PATS keys and some of the other stuff?
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Old 03-13-2009
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A lot of mud racers and desert racers do it, cause it is higher revving, and it keeps you in a 6 cyl class.

But I would x2 on the 302 swap.
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Old 03-13-2009
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A 302 swap is not the answer for everything. Some people don't want a V8 like everyone else. Its like people that say SAS everything. Oh no my TV isn't that great but if I SAS it and swap in a 302 the picture quality will be so much better.
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Old 03-13-2009
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Quote:
Originally Posted by fddriver02 View Post
A 302 swap is not the answer for everything. Some people don't want a V8 like everyone else. Its like people that say SAS everything. Oh no my TV isn't that great but if I SAS it and swap in a 302 the picture quality will be so much better.
I just like to say 302 swap whenever someone asks about more power since I want a 302 . All of the HD TV's are SAS'd and 302'd, thats what makes them so good.
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Old 03-13-2009
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Quote:
Originally Posted by korey89 View Post
I just like to say 302 swap whenever someone asks about more power since I want a 302 . All of the HD TV's are SAS'd and 302'd, thats what makes them so good.
I do own one. Sony 1080p 40" LCD. Already has SAS and 5.4 swap.
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  #15  
Old 03-13-2009
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Depends on what you want. I always say go big or go home, well usually, but you have to figure out what you want. If you want to keep the V6 so you don;t have to fool with wiring and stuff, then Id stroke the 4.0, cam, headers, intakes, and head work. It'll cost a lot, but you will still have the V6 and no wiring, and it should put you right at or a tad above a stock 5.0. Or there's the 5.0 swap... still a lot of money, but you will end up with more low end torque than any 4.0, and damn, you just can't beat that sound. The swap isnt too bad at all. Just takes some looking at a few manuals for the slight wiring differences. Tell us more about what you want and about what kind of work you are comfortable with doing.
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Old 03-13-2009
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What is the stroke on the older 4.0L? The ohc ones have a fairly short stroke. Which is the opposite of what you want for a towing vehicle.
But.. IMO you have the right mindset. A mild port and blending of the bowls along with a cam would be the best way to do it on a shade tree budget. It'll just move the TQ curve down in rpms.. which is perfect for what your trying to accomplish.

IMO.. headers for towing would not be worth it. Just port match the stock iron ones and remove any obvious bumps or sharp corners.

btw, I have SCT pro racer tuning software and tune my own ranger. If you ever get into it at that level let me know.

Regards, Rich
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Old 03-13-2009
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I wonder what the reliability is with one of these stroker kits.
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Old 03-13-2009
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Quote:
Originally Posted by chainfire View Post
I wonder what the reliability is with one of these stroker kits.
As piston speed goes up.. so does rod bearing and piston skirt loading. As long as everything is square and you don't over rev it.. it would be fine. Only when you get into 6000+ rpms do you really start to have to worry about balancing and bearing clearances vs oil pressure & viscosity.

I've got a 5.4L that the bottom end is good for 7500. And it took a lot of details (aka money) to do it.

Rich
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Old 03-13-2009
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Good to know, that would be my main concern, but I guess it is a race motor. I think it would be useless for a DD, but fricken cool. No one has done one that I know of.
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Old 03-13-2009
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I've never had a 4.0L apart. If the main caps are not trapped from walking side to side that could become an issue with a stroker crank.

Then.. the next weakest link becomes the blocks regidity.

If I was going to build a 4.0L ohc I'd look very very closely at what supersix does.
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  #21  
Old 03-13-2009
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OK guys first off lets remember I said its going to be my daily driver.....all talk of 302 swaps stop here. Not doing it, dont want it.

Strokers are out also because of cost. As I said in the first post this is just a FRESHENING of my stock motor. I will get all machine work and porting done for pennies since my good friend has his own engine shop and he owes me a big favor for all the bussiness I have sent him lately.

I am lookin at fresh hone,rings,bearings,pumps,cam swap,head porting,intake porting and possibly a tune.Im just lookin to pick up some power down low to help with mileage and towing power.

I wanted to hear from anyone who has done a 4.0 with ported heads,tuner or bigger cam to see what kind of difference it made.
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  #22  
Old 03-13-2009
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hmmm I just did the HP calculator on supersixs web site
i know this is around the correct wight because i had to weigh the thing for CA dmv haha. i am 138lbs
im fairly positive my truck can run a 15.5 quarter
Quote:
Your mazda b4000 4x4 weighs about 4000 pounds and can complete a 1/4 mile in about 15.5 seconds. That means that you've got about 212.30 HP at the wheels, and about 275.99 HP at the flywheel.
sounds fairly accurate, a little high on crank hp thou.
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Old 03-13-2009
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just incase you want it here is the site for ohv performace. just thought you might want to take a look at it.
http://www.moranav6racing.com/catego...?CategoryID=32
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Old 03-13-2009
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Look up about 7-8 posts, I posted it
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Old 03-13-2009
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I dont know if anyone has a comp cam in their 4.0 but dont you have to change/upgrade the springs,rockers/valves to accept the bigger cam? I know theres two cams that comp. offers for the motor. Sorry for the hijack, def going to be watching this thread
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