200rwhp 4.0 SOHC with minor bolt-on's and Bamachips

[Doug904]

Hey guys,

I've finally gotten a guy to goto the dyno today with some great results. He's got an 01' SOHC 4.0 Ranger with a 5R55E automatic. Air Intake, cat-back exhaust, correctly gapped spark plugs (TR55-1 NGK's) and finally my 93 Performance program. He laid down a solid 200.1 rwhp and 223.6 rwtq. Not bad for a SOHC with 70K miles and such minor mods....

200 rwhp


Later Doug.

 

[spindlecone]

Hey guys,

I've finally gotten a guy to goto the dyno today with some great results. He's got an 01' SOHC 4.0 Ranger with a 5R55E automatic. Air Intake, cat-back exhaust, correctly gapped spark plugs (TR55-1 NGK's) and finally my 93 Performance program. He laid down a solid 200.1 rwhp and 223.6 rwtq. Not bad for a SOHC with 70K miles and such minor mods....

Later Doug.

Lets see the Dyno graph doug. please post it

 

[aldive]

correctly gapped spark plugs (TR55-1 NGK's)

Doug, would you please elaborate on this?

 

[spindlecone]

Doug, would you please elaborate on this?

and the graphs, please, we all need real time numbers

 

[Nate1]

 

[section525]

Very very impressive. That's what I dynoed at with my V8.

Here's Doug's graph /\ /\ (Courtesy of Nate Simmons)

 

[Doug904]

PM sent Spindlecone, I'm working on the graphs, for some reason my website has decided it doesn't wanna let me log in tonight, I have a buddy uploading it to his site now so give me a few minutes. I thought it would link from the above site but I guess I was wrong....

EDIT### Thanks guys!!


The Spark plug gap is an issue with the 01' SOHC's I know in the Ranger's, they call for a gap of .060-.065 and using it with any good timing numbers it will ping. When I say good I mean more then the base SCT performance files.

So, when I talk with my Ranger guys that want everything they can I tell them to drop the gap of the plugs to .045-.048 and use TR55-EV1's. The -1 is required because of the longer plug reach in the new style SOHC heads that come in the 01' Up Ranger's and the Explorer's with the breadbox style intake like the Ranger's.

In reference to this Ford changed the plugs in 01' from an AGSF32 to an AGSF34 because they changed the head a little bit. The AGSF32 was the plug used in the OHV 4.0 too. Now when you goto to buy plugs for an new model SOHC make sure you get the right ones, the newer 34's are longer then the 32's. Watch Autozone and Advance as they show the same spark plug for all the years.


Here's a full size photo of the dyno sheet too....

http://www.scothew.com/tuning/40dynorun.jpg


Thanks, Doug.

 

[Nate1]

Very very impressive. That's what I dynoed at with my V8.

Here's Doug's graph /\ /\ (Courtesy of Nate Simmons)

I'll let it slide once.

 

[spindlecone]

Very very impressive. That's what I dynoed at with my V8.

Here's Doug's graph /\ /\ (Courtesy of Nate Simmons)

Killer, wish I could get 93 octane gas

 

[smiley1]

Killer, wish I could get 93 octane gas

Sure ya can. Just go down to Home Depot and get a gallon can of Zylene. pour it in your tank at the next fill up with 91. I have a link to the exact formula somewhere that will tell you exactly how much to use.

I have used this meathod with my GTP to isolate some timing concerns. Unfortunately its not cost effective at 10 bucks a gallon to use regularly.

 

[Spdrcer34]

I think it's strange how the Tq & Hp curves intersect @ 4,750 instead of 5,250.

Why is that? The only time I've seen that is when the graph itself has been 'tweaked'. I'm not accusing anyone of any wrong doing. Not at all. I'd like to know what dyno software was used.

Ryan

 

[HypIllAuto]

With it being a dynojet, I could only assume its the WinPEP software. Am I right Doug?

 

[spindlecone]

With it being a dynojet, I could only assume its the WinPEP software. Am I right Doug?

Whats WinPEP?

 

[Doug904]

It's the Winpep software but that is a sheet printed out from the dyno shop itself. Just as others have posted.

I didn't want any doubt as to attempting to modify it using the home version of Runviewer software because it doesn't show as much info.

Thanks, Doug.

 

[BigBOB]

The curves don't intersect on this printout because the hp and torque scales are different.

 

[spindlecone]

The curves don't intersect on this printout because the hp and torque scales are different.

SOOOOO what do it mean Bob, overall

 

[Doug904]

The curves don't intersect on this printout because the hp and torque scales are different.

Yes, what do you mean? I had the guys at the dyno print this out for me so there wouldn't be any doubts about it. If you mean the hp and torque are from different runs they are not, they are all from run # 004.

Thanks, Doug.

 

[spindlecone]

I think it's strange how the Tq & Hp curves intersect @ 4,750 instead of 5,250.

Why is that? The only time I've seen that is when the graph itself has been 'tweaked'. I'm not accusing anyone of any wrong doing. Not at all. I'd like to know what dyno software was used.

Ryan

Tweaked I would hope not, I guess the Dyno graph is what it is, seems to be some questions that have not been adressed, but what the hell.
He who has the best numbers has the biggest d$$ck I suppose

 

[Spdrcer34]

"Foot-pounds of torque" is a REAL WORLD number. It is measurable, and not 'open for interpretation'. It describes how much work a motor/engine can do. Horsepower is a 'made-up' or 'lamens' term. It just describes how fast the work CAN be done. But unlike torque, it's not a REAL WORLD number, and it is 'open for interpretation'.

For those that don't know basic automotive mathematics:
(Foot-pounds x rpm)/5250 = Horsepower

That is THE formula for finding horsepower. Note the only constant in every equation will be the 5250 number. Because of this constant in the equation, every un-modified/un-corrected dyno sheet will have the HP and TQ lines intersect at 5,250 RPM.

Ryan

 

[Doug904]

"Foot-pounds of torque" is a REAL WORLD number. It is measurable, and not 'open for interpretation'. It describes how much work a motor/engine can do. Horsepower is a 'made-up' or 'lamens' term. It just describes how fast the work CAN be done. But unlike torque, it's not a REAL WORLD number, and it is 'open for interpretation'.

For those that don't know basic automotive mathematics:
(Foot-pounds x rpm)/5250 = Horsepower

That is THE formula for finding horsepower. Note the only constant in every equation will be the 5250 number. Because of this constant in the equation, every un-modified/un-corrected dyno sheet will have the HP and TQ lines intersect at 5,250 RPM.

Ryan

Ok, given your math then.....

(223 x 4750)/5250 = 201.76 rwhp

Like I said this was made by the dyno company on the picture not by me. I've requested his files be sent to me via email and I will use the Run Viewer software and see if they do the same intersecting on there and I will post the results from there as well.

After reviewing some of my other vehicle dyno runs as well I've found not only for the lines to intersect at 4800 rpm's but even lower around 4200 rpm's. I will contact the dyno today and talk with them about this but in the mean time here are some runs taken BEFORE I started tuning.....

1993 Ranger 3.0 5-speed doing some Nitrous adjustments Here they cross at 4800

Same 3.0 Ranger Here they cross at around 4100-4200

My baseline run when I first installed my Whipple Supercharger on my automatic 3.0 Ranger Here they cross at 4800

As you can see they are all in SAE rating.

Thanks, Doug