Author Topic: Performance/Driveability improvements to my Jeep  (Read 1737 times)

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95wranglasaurus

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Performance/Driveability improvements to my Jeep
« on: November 11, 2008, 08:00:19 AM »
Hi All,

I'm Scott, an old newbie.

I've done some stuff to my '95 Wrangler (2.5/AX-5/4:10/3-4" lift/31X10.50) and wanted to share the results.

Amsoil in the transmission.  What an improvement!  I'm now an Amsoil fan for life.  Even though the PO had recently replaced the transmission, it shifted hard when cold, and wasn't all that smooth when warm.  The new oil makes it shift better when cold than it used to when warm, and when it's warm it shifts like a dream. 

4.0 Throttle Body.  This made a very noticeable improvement.  I timed my Jeep doing "max roll on's" from 40 to 50 mph in 4th gear on the same stretch of road, same starting point, several times with a stop watch before and after I installed the TB.  I averaged the before and after times and got a 42% average improvement on the stop watch.  Seat of the pants felt like maybe 20-25%, but still very noticeable and gratifying.

High output coil from "ctperformance" on eBay (only $25 plus shipping), Bosch Platinum 2's, and new Autolite standard (I know I know) ignition wires.  Seat of the pants, this made as much difference as the bigger TB did, or close.  I didn't do any time trials, but the difference in smoothness and "felt" torque is night and day.  Lugging the engine, it's as good in one higher gear in situations that used to require one lower gear.  Take offs are much improved.  I wish I had done this first.  The Jeep ran pretty good from the start, but I suspected there was room for improvement, but not as much as I actually got.  This is the best single improvement in all around driveability that I've made so far.

In spite of the contoversy about TB Spacers, I'm going to try that next ($41 plus shipping on eBay) and decide for myself.  I'll do the stop watch routine on this one.  I also bought some used Gen III 19# injectors off eBay (8 injectors for $30 plus shipping) and will try those at some point in the future, after I cough up for an inline fuel pressure gauge and adjustable pressure regulator.

I cut the ears off the distributor to see if I could get an improvement by having more advance.  Some say the computer doesn't let this work, we'll see.  It runs so sweet I may not even experiment with this (ya right!). 

Thanks to all of you who have done write ups on these mods and shared your ideas, if it weren't for you, I wouldn't be such a happy camper right now!

Scott   

Offline neale_rs

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Re: Performance/Driveability improvements to my Jeep
« Reply #1 on: November 11, 2008, 10:21:44 AM »
Sounds like these mods have turned out great for you.  One question:  Where did you get a replacement gasket for the TB?  That's pretty much the only thing keeping me from doing that mod right away.  Thanks

'95 YJ, 33 x 12.5 mud tires, RE 4.5 ED lift, Atlas 4 speed, rear D44, ARBs front and rear, 4.56 gears, 8000# winch

95yjman

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Re: Performance/Driveability improvements to my Jeep
« Reply #2 on: November 11, 2008, 02:05:41 PM »
Sounds like these mods have turned out great for you.  One question:  Where did you get a replacement gasket for the TB?  That's pretty much the only thing keeping me from doing that mod right away.  Thanks



You should be able to get it at any auto parts store, thats where I got mine at.

Offline neale_rs

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Re: Performance/Driveability improvements to my Jeep
« Reply #3 on: November 11, 2008, 03:03:29 PM »
Thanks, IŽll try that.  For some reason I wasnŽt able to locate anything online and thought it would be hard to find or I would have to make one.
'95 YJ, 33 x 12.5 mud tires, RE 4.5 ED lift, Atlas 4 speed, rear D44, ARBs front and rear, 4.56 gears, 8000# winch

Offline Jeffy

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Re: Performance/Driveability improvements to my Jeep
« Reply #4 on: November 11, 2008, 04:24:24 PM »
Thanks, IŽll try that.  For some reason I wasnŽt able to locate anything online and thought it would be hard to find or I would have to make one.

Must not have looked hard.  That's where I found the info for this thread: http://4bangerjp.com/forums/index.php?topic=1456.0

Most if not all parts stores should be able to get them.
Youtube Channel: https://www.youtube.com/channel/UCZNlr60GXH5OlKIFrT7P6mg
My Jeep: http://4bangerjp.com/forums/index.php?topic=2783.0
"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

Offline neale_rs

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Re: Performance/Driveability improvements to my Jeep
« Reply #5 on: November 11, 2008, 04:41:26 PM »
Thanks, looks like it won't be a problem to find it.

'95 YJ, 33 x 12.5 mud tires, RE 4.5 ED lift, Atlas 4 speed, rear D44, ARBs front and rear, 4.56 gears, 8000# winch

95wranglasaurus

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Re: Performance/Driveability improvements to my Jeep
« Reply #6 on: November 11, 2008, 08:34:44 PM »
neale_rs

I've gotten them from the local Auto Zone, but like Jeffy said, I would imagine you can get them most anywhere.  My new TB spacer included the required pair.

Scott

TrailsLessTaken

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Re: Performance/Driveability improvements to my Jeep
« Reply #7 on: November 11, 2008, 08:55:07 PM »
Napa Part Number 60948 $1.85

Offline neale_rs

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Re: Performance/Driveability improvements to my Jeep
« Reply #8 on: November 12, 2008, 06:58:06 AM »
Thanks to all for the information.  I'm looking forward to doing the swap soon.

'95 YJ, 33 x 12.5 mud tires, RE 4.5 ED lift, Atlas 4 speed, rear D44, ARBs front and rear, 4.56 gears, 8000# winch