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-   -   4 cyl motor (https://www.wranglerforum.com/f290/4-cyl-motor-1361769.html)

Lag1996 08-02-2015 04:49 PM

4 cyl motor
 
Ok so I have read about the 4 cyl motor not winning any races, but I brought this vehicle (1992 4 cyl , not sure year of motor 5 speed tranny)all stock to run around town and spend time on the beach with . How is this vehicle off road wise , mainly heavy sand ? What should I expect ? Will I be disappointed ? Thanks in advance for any imput.

Tom95YJ 08-02-2015 04:52 PM

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I ran a 2.5l for 8 years. All I gotta say is 4.88 gears and don't go over 33" tires

Lag1996 08-02-2015 05:10 PM

Thanks for the reply,Not looking at anything bigger then 31 , might even keep stock, mainly want to get down the beach and around town

billiebob 08-02-2015 05:27 PM

1992 SE came with 4.10s which is plenty deep enough for 31s. Beach sand... get the widest... best flotation you can find and run no higher than 24psi. Or air down.

The only place an SE suffers is on the Interstate. Short bursts to 60mph should be no problem but trying to cruise at 70-75 will be painful.

The SE was built for around town, the beach and forestry trails. Enjoy it.

And remember... keep it light. Don't add bumpers, tire carriers, winch, double batteries.....

Lag1996 08-02-2015 05:53 PM

Billiebob, how do I know what model I have? Thanks

billiebob 08-02-2015 06:07 PM

you said it was a 4cylinder ??????????

fillout yer profile if you want accurate help.

mijeeper80 08-02-2015 06:08 PM

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The 4 cyl sux on highway unless you don't use 5th gear like me. Offroad my ol girl does just fine, only time offroad that I feel she lacks a little is trying to climb steep embankments. Sand, you should do just fine, like Tom said you are going to want to go as wide as possible. If you live in a snow state those tires won't be so awesome though. I go to silver lake "sand dunes on Lake Michigan" a couple times a year and my 33/12.5's do great. I go up test hill with very little effort.

Lag1996 08-02-2015 07:58 PM

Great thanks for your imput, yes 4 cyl I guess that means the SE model.?and I will update my profile now

bigearl 08-02-2015 08:35 PM

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I just and my 4 angry squirrels down on the river/"local beach" and it's a pretty fun, sand flippin machine! Just get wide tires, and you should have a great time!

Varg0 08-02-2015 09:26 PM

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I head down to Mexico with my 92 and I do just fine on 33s down to 25 lbs.

Attachment 2387041

mijeeper80 08-02-2015 10:30 PM

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Quote:

Originally Posted by Varg0 (Post 20598689)
I head down to Mexico with my 92 and I do just fine on 33s down to 25 lbs.

lucky!!!! Awesome pic!!!!!!

Lag1996 08-03-2015 03:32 PM

I do appreciate all the responses , puts my mind at ease a little lol

medalguy 08-03-2015 08:04 PM

I have a 95 4 banger 5 speed and run 30 inch tires with nooooo problems. I can easily get 70 - 75 on the highway but try to keep it 65 or under. No sense running it right at the line all the time, that just causes unnecessary wear. I drive a lot in the desert, through sand and rocks and love it. Around town it's fine, but on back roads it really excels. For really deep sand, drop the TP to 20 or so and keep an on-board air comp to reinflate the tires back up for the trip home.

bigearl 08-03-2015 09:02 PM

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Quote:

Originally Posted by medalguy (Post 20615209)
I have a 95 4 banger 5 speed and run 30 inch tires with nooooo problems. I can easily get 70 - 75 on the highway but try to keep it 65 or under. No sense running it right at the line all the time, that just causes unnecessary wear. I drive a lot in the desert, through sand and rocks and love it. Around town it's fine, but on back roads it really excels. For really deep sand, drop the TP to 20 or so and keep an on-board air comp to reinflate the tires back up for the trip home.

What part of nm are you from?

James J Jeep 08-06-2015 04:38 PM

On the sand in Rehoboth Beach DE
 
Just got back from running my 2.5L 4 cyl HIGH output with stock height and 235/75R15 tires on the sand. Drew the tire pressure down to 20 lbs and my 4:10 rear worked great! I drove in both 4wd High and Low gear ranges to see what a difference it made. Sand was soft and rutted from all the other vehicles that had been through that day. But I plowed through nicely. Found it really handy to start off in 2nd or even third gear when running in the low gear range.

Follow this link for pics IMAG0267_zpsinmqoayk.jpg Photo by James_J_Jeep | Photobucket

billiebob 08-06-2015 05:12 PM

Quote:

Originally Posted by James J Jeep (Post 20674050)
Just got back from running my 2.5L 4 cyl HIGH output with stock height and 235/75R15 tires on the sand. Drew the tire pressure down to 20 lbs and my 4:10 rear worked great! I drove in both 4wd High and Low gear ranges to see what a difference it made. Sand was soft and rutted from all the other vehicles that had been through that day. But I plowed through nicely. Found it really handy to start off in 2nd or even third gear when running in the low gear range.

Follow this link for pics IMAG0267_zpsinmqoayk.jpg Photo by James_J_Jeep | Photobucket

textbook off road driving !!
yer the man.

:beerdrinking:

DryCreek 08-07-2015 10:06 PM

One thing I always tell my son when he borrows the old YJ, is that it is from a different time. The 4 cylinder engine was an attempt to wring better efficiency out of a popular vehicle. Back when the speed limit was 55, the smaller engine with taller gearing made perfect sense. With stock size 29" tires I am turning right around 2,500 rpm at 60 mph. Back in the day, that was a pretty safe speed to travel at. Some places you could get away with 62, but it was depending on how good a day the trooper had as to whether or not you got pulled over. The speed limit is 75 mph on most stretches on my commute. That puts me at 3K rpm. I don't like to keep it at that speed, although the engine and drivetrain doesn't seem to mind. The vehicle this YJ replaced - a 95 Geo Tracker with 3 spd auto - would be turning at 3,500 rpm at 65 mph. I really didn't like to keep it wound out like that, but the 1.6L hummed right along without any complaints. I would say that the performance was about equal - due mainly to almost identical hp/weight ratios. The OD in the AX-5, even if it is 0.83 makes a big difference at highway speeds. I like to keep it in OD, but there are at least three large hills on my commute where I have to come out and run at 3K rpm at 65 mph.

Anyway, I was very surprised to see them keep a 4 cylinder engine in the TJ's since the speed limits were changing back in '97. I guess that it helped to make the S or SE an affordable entry level Wrangler.

jokerchief462 08-07-2015 10:23 PM

I run 33s and re-geared to 4:88s. With a recent overhaul my LO 2.5L will get her going on the flat no problem 70-75 until you hit an uphill or a headwind.

I go everywhere all the big boys go with their 4.0L or JKs. It takes a little time on the hills and in the wind but it is an acceptable ride on an interstate or on the trail.

Enjoy it.

Lag1996 08-08-2015 07:47 AM

Thanks , I can't wait to get this thing out on the sand ,I'm in no hurry , just want to get where I'm going.

Dave Meyers 08-08-2015 07:57 AM

I have had six cylinder TJs and 4 CYl TJs, and just bought a 4 cyl YJ, so obviously I have no issue with the 4 banger. I think that one reason they may have kept the 4 in the line up after 1997 was for emissions. The 97 4 banger was classified an an extremely low emission vehicle, which may have helped the manufacturer comply with guidelines placed by the Gov't. A guess. i have stock gears, 33s and no complaints. What really helped my power and smothness was replacing the driveshaft with a DC, but I have 5.5" lift. Once the vibration was gone, acceleration and revs improved.

Squerly 08-17-2015 09:20 PM

Quote:

Originally Posted by Dave Meyers (Post 20703106)
What really helped my power and smothness was replacing the driveshaft with a DC...

Hi Dave. Can you expand on that a little?

Dave Meyers 08-17-2015 09:43 PM

Quote:

Originally Posted by Squerly (Post 20883217)
Hi Dave. Can you expand on that a little?

When I bought the YJ it had actually nearly 6" lift, with the stock rear driveshaft, 2 degree wedges, pinion yoke with worn out u joint locating tabs. It had a lot of vibration, and the motor did not like to rev above 3500 or so and shuddered when accelerating from a stop. I replaced the pinion yoke and it got worse, it seems that the amount of play the u joint had in the worn out yoke actually cancelled some vibes. Increased the TC drop from 1" to 2" and had much less vibes, but did not rev much better and I did not like the driveline angles, particularly at the TC U joint. Installed a Double Cardan Driveshaft and 8 degree rear axle wedges, and played around with TC drop to bring the pinion yoke U joint to 1 or 1.5 degrees or so. So I ended up with about .5" TC drop which eliminated driveline vibration, after which the motor is happy revving up to 5000, although I have no reason to continue to do this with 191,000 miles on the clock. The acceleration from a stop is smooth, feels more powerful and responsive up to redline. It is a whole lot more fun to drive than it was already, and I am not worried about breaking a U joint or worse.

Squerly 08-18-2015 07:03 AM

Thank you Dave!

medalguy 08-18-2015 09:04 PM

I have a 95, pure stock running 31 inch tires. As a measure of what the 2.5 can do, my son and I took the Jeep up to Ouray this past weekend and drove Imogene Pass (13,114 ft), Engineer Pass (12,800 ft), and Ophir Pass (11,789 ft). We had no real problems except a couple of big rocks that we had to stop and figure out the best way over/around. If my Jeep can do that, it can do just about anything I need on the road. Nothing wrong with a 2.5 engine in my book.

By the way, I have to share something funny as Hell with you. As we were approaching the summit of Engineer Pass, we met a ...... wait for it..... 93 Chrysler minivan coming over the pass. That's right, a minivan. I would guess clearance on this thing was about 9 inches, yet he had somehow made it all the way from Lake City over the mountain. We stopped him and asked which way he was going, and he said over to Ouray. No way he was going to make that road, and we convinced him to take the long way through Animas Forks to Silverton, then US 550 to Ouray. I wish I had taken a video of him coming down the road. Unbelievable.

billiebob 08-18-2015 10:13 PM

sort of like the you tube video of a Crown Vic on Hells Revenge...

Wranglers really are fine fully stock.

bigearl 08-18-2015 10:54 PM

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Quote:

Originally Posted by billiebob (Post 20905865)
sort of like the you tube video of a Crown Vic on Hells Revenge...

Wranglers really are fine fully stock.

Wut? Did that think really make it? Why did I even buy a Jeep then?!!!!!

billiebob 08-19-2015 12:06 AM

google it on you tube

and watch this

https://www.youtube.com/watch?v=nq2jY1trxqg


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