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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 08-30-2008
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Underdrive pulley question.

As a warning to those who will post and saying one way or the other if they are good or bad without actually having a pulley done on you 4.0SOHC please do not reply.

For those of you who are running them I have a few questions (This means you Rich):

1-Do you feel that it is worth the cost?

2-What kind of power gains? (I have seen Riches sheet)

3-Any difference in fuel economy?

4-Is it worth the money to get the complete pulley kit? Or just the Underdrive Crank pulley?

Thank you
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Old 08-30-2008
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Quote:
Originally Posted by CJGSAY View Post
For those of you who are running them I have a few questions (This means you Rich):

1-Do you feel that it is worth the cost?

2-What kind of power gains? (I have seen Riches sheet)

3-Any difference in fuel economy?

4-Is it worth the money to get the complete pulley kit? Or just the Underdrive Crank pulley?
1 Yes. Both in "feel" and in power you put down. It's the second best mod I've done on my ranger.

2 Most impressive is tip in power at lower rpms.

3 A little but not too much.

4 I'm not sure. Do the other pullies speed up the accessories or do they further slow them?
I'd not slow them anymore. And if I lived in the south I'd want to speed the water pump up a bit.

tip 1: I've sped up my Park and Neutral idle speed to 800 rpms to help ac, cooling, and voltage performance. Last week I cruised woodward for 10hrs in mid 80s temps. I had the Drive idle set at 700 and the Neutral idle set at 900. Had absolutely ZERO problems. Hottest it got was 220F (e-fan set to come on at 215)

tip 2: Get a "84.5 belt" (not a 84.0 and not a 85.0 Trust me. I've got all three. The 84.5 is what you want)

Rich
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Old 04-17-2009
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wondering the exact same thing.. not getting a programmer ( had a bad experience with one) so thinking this is my best bet to get a little more oomph... i believe the water pump pulley is also sped down? sent an enquiry to underdog performance ( they have kit that includes all 3 plus belt) but wondering if alternator pulley neccesary and get the tensior pulley instead...seems all fords have a problem with noisy pullies! lol though i think my p/s pulley maybe the noisiest
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Old 04-17-2009
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This is on my list, along with a Tuner from doug.

Curious to hear from other members.
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Old 04-17-2009
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^^ i have heard they kinda delete the harmonic balancer in some applications.
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Old 04-17-2009
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^^ i have heard they kinda delete the harmonic balancer in some applications.

3.0 pulley BOLTS to the balancer.
4.0 pulley IS PART of the blancer. This the higher cost.
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Old 04-17-2009
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is there a link to get these at?
i might...
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Old 04-17-2009
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Old 04-17-2009
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stuffforyourranger.com

edit...dangit. that cone dude beat me again.
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Old 04-19-2009
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The 4.0L crank pulley **is a damper**

btw, it's simply a ASP 4.0L unit.


As far as a bad tuner experience... I've said it before and I'll say it again. A tune is only as good as the guy writing & researching it.

Doug had my engine tuned fine. But the tranny functions.. well those he completely ignored even though I specifically asked for changes.
I got fed up with all these so called "tuners" and just bought the software to do it myself. Glad I did too.

Rich
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Old 04-25-2009
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my tuner ( jet- handheld model) completely erased my computer when i tried to put it back to stock...big $$$ to get my truck mobile again, thus my reason for no longer wanting a tuner
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Old 04-25-2009
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Quote:
Originally Posted by ringer4x4 View Post
my tuner ( jet- handheld model) completely erased my computer when i tried to put it back to stock...big $$$ to get my truck mobile again, thus my reason for no longer wanting a tuner
Thats why you double check to make sure they save stock settings. Alot of people have the x-cal and seem to like it so dont judge a programmer just from one brand
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Old 04-25-2009
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My Flahspaq has worked perfectly. Not one single complaint!
Cold air is the next engine upgrade. After that i think it's going to be these ud pulleys.
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Old 04-25-2009
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jet programmer instructions said saves stock settings... jet paid for most of the repair bill so i guess can't cry too much
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Old 04-25-2009
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My Flahspaq has worked perfectly. Not one single complaint!
Cold air is the next engine upgrade. After that i think it's going to be these ud pulleys.
The stock intake is a cold air intake. Don't waste your money.
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Old 04-25-2009
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hey Rich i noticed u said u turned up ur idle... how exactly do u do that? my truck seems to idle a smidge low and i wanna turn it up about 50-100 rpm
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Old 04-25-2009
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The stock intake is a cold air intake. Don't waste your money.
I have been hearing this allot! Ive heard they do and that they don't. Not sure what to believe. I know it will draw the same temp. air from the same location but seems like the k&n cone filter will increase the volume of air. Anybody who has one that can verify no gains?
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Old 04-25-2009
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Originally Posted by effexfour View Post
I have been hearing this allot! Ive heard they do and that they don't. Not sure what to believe. I know it will draw the same temp. air from the same location but seems like the k&n cone filter will increase the volume of air. Anybody who has one that can verify no gains?
D. made a post awhile back about a comparison he did with a stock one and a K&N and he said the difference was so little its not worth the money.
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Old 04-25-2009
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K&N.com claims a gain of 3.25hp. 3 horsepower on a 200 hp motor is a waste of money. 'nuff said?
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Old 04-25-2009
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K&N.com claims a gain of 3.25hp. 3 horsepower on a 200 hp motor is a waste of money. 'nuff said?
This k&n site say 13.45 hp gain.
what one u looking at?
http://www.knfilters.com/search/prod...x?Prod=57-2561
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Old 04-25-2009
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Anyways back to pulley, What kind of power gains can u get out of these pulleys? will the light weight pulleys make much difference or just stick with the underdrive crank and overdrive alternator?
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  #22  
Old 04-25-2009
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Originally Posted by effexfour View Post
This k&n site say 13.45 hp gain.
what one u looking at?
http://www.knfilters.com/search/prod...x?Prod=57-2561
oh i failed to specify the OHV 4.0 gain is 3.25hp
SOHC must be 13.45hp gain

http://knfilters.com/search/product.aspx?Prod=57-2527
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Old 05-01-2009
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does the underdrive water pump pulley help improve performance in any way or is that money better spent on something else?
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