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-   -   UNderdrive pulley for 5.7 L hemi (http://www.jeepgarage.org/f183/underdrive-pulley-for-5-7-l-hemi-49529.html)

Combat 10-28-2012 10:13 PM

UNderdrive pulley for 5.7 L hemi
 
Can anyone provide me a link for an under drive pulley kit for my 5.7? if there is even one, just wondering. Thanks

4.whoa 10-31-2012 12:58 AM

Re: UNderdrive pulley for 5.7 L hemi
 
Here ya go ;) http://www.summitracing.com/parts/sum-c2515

put one on mine, this is the belt i used with it. no problems with anything at all :thumbsup: http://i1123.photobucket.com/albums/...y/IMAG0596.jpg

Combat 10-31-2012 03:27 AM

Re: UNderdrive pulley for 5.7 L hemi
 
Hey thanks. How was the power increase? Was it noticeable? If so I'm gonna order it right up.

06grand 10-31-2012 06:23 AM

Re: UNderdrive pulley for 5.7 L hemi
 
Interested in knowing what kind of gains you saw as well, and I know you said no probs with anything, but just to be clear, you have seen zero negative effects on charging system or cooling system?

4.whoa 10-31-2012 12:56 PM

Re: UNderdrive pulley for 5.7 L hemi
 
well, it technically doesnt add hp (throwing that out cuz if i dont someone else will ;) ) it eases the drag on the engine. they say it frees up about 10 hp. I noticed it revs quicker. Also on a trip comparison the mpg went up .4 ,not huge but still up.:D

I have had no adverse effects with it. stays right at temp with ac on & we had way to many 100*+ days this year. I have not had any elec problems either,but The only extra i have is a amp for my sub(600w)

I had a little trouble with the install as my old crank bolt didnt go quietly :rolleyes: but that is no fault of /with the damper. (its in my build thread-see sig )

Note summit doesnt show the jeep as an application for it, but it DOES work -lx version pn c2515

Combat 10-31-2012 07:09 PM

Re: UNderdrive pulley for 5.7 L hemi
 
Thats good to know. Would you say it was worth the money?

06grand 11-01-2012 09:57 AM

Re: UNderdrive pulley for 5.7 L hemi
 
thanks for the breakdown, def going on the wish list

4.whoa 11-02-2012 05:06 PM

Re: UNderdrive pulley for 5.7 L hemi
 
Quote:

Originally Posted by Combat (Post 705362)
Thats good to know. Would you say it was worth the money?

I'd do it again for sure :thumbsup:

Note: if you're needing to do anything @ the front of the engine- water pump/timing set (i did both) steering pump, etc, save time and do them together :D

06grand 11-03-2012 07:28 AM

Re: UNderdrive pulley for 5.7 L hemi
 
Note: if you're needing to do anything @ the front of the engine- water pump/timing set (i did both) steering pump, etc, save time and do them together :D[/QUOTE]


Whats the life on these parts, did you change just to be safe or were you having problems, I have 85k on mine, just curious

4.whoa 11-04-2012 01:50 PM

Re: UNderdrive pulley for 5.7 L hemi
 
water pump was leaking, i replaced the 5.7 timing tensioner with one from a 6.1 the 6.1 has more springs and while its not common, some have seen the 5.7 fail, and as i like high revs, i changed it for piece of mind.

i was over 120k @ time

06grand 11-05-2012 06:52 AM

Re: UNderdrive pulley for 5.7 L hemi
 
thanks, if/when i do this ill keep those in mind

Combat 11-07-2012 08:41 PM

Re: UNderdrive pulley for 5.7 L hemi
 
Just installed the 20% UD Pulley from summit racing. Haven't gotten around to driving it; however, I will be sure to let you know if I feel any difference.


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