Help on engine choice!!! - JeepForum.com
 
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post #1 of 12 Old 08-17-2010, 11:08 AM Thread Starter
topherbarrow
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Help on engine choice!!!

I have an 81 CJ7 with a 258 in it. I have restored mostly everything except the engine (wiring, interior, exterior, etc). I have put the engine off long enough too.

My issue is that the engine has been losing oil and will also lose prime if left alone for more than a few hours. Meaning I have to use starting fluid in the carb to get it going again. Big hassle!!!

I was thinking of just getting a good rebuild done on the 258, but have also thought about upgrading...My decision will be based on price, power, and easiness.

If you have any insight on the options please let me know.


Thanks everyone!!

Topher

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post #2 of 12 Old 08-17-2010, 11:48 AM
Pathkiller
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What is your goal for this Jeep? You said you have "restored" the other systems. Do you mean you are restoring the Jeep back to factory condition? If so you would want to stick with the original drivetrain and restore it to original running condition. If you're not concerned about originality then the world is your oyster. Go with whatever you can afford. Anywhere from an AMC V8 to a 4.0L transplant from a later Jeep to a Chevy LS engine, there are many different options out there.
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post #3 of 12 Old 08-17-2010, 01:46 PM
Vee
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I'd stick with the 258, but that's just me.
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post #4 of 12 Old 08-17-2010, 02:33 PM
Jeepican
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I agree.... i would stick w/ the 258 if it was me.... but it all depends on your use.....

1976 CJ5 - 232 I6, MC2100, YJ Booster, Front disc conv, 2.5" BDS, 1" Body Lift, .5" lift Daystar Shackles, 33 x 10.50 BF KM2, Twin Stick
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post #5 of 12 Old 08-17-2010, 03:03 PM
LSUtiger
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It also depends on which trans you have. If it is a t4 or 5 or sr4, I would keep the 258 for sure.

1980 cj5 401, t-176, p/s., YJ p/b, tfi/hei hybrid, 3.73 30/44
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post #6 of 12 Old 08-27-2010, 01:00 PM Thread Starter
topherbarrow
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It has a t4 in it, and don't necessarily care about keeping it original. I really just wanna have a solid engine that is reliable. I don't do a lot of off roading, but if i do it's nothing too crazy. I have 33's on it and don't intend on going any bigger.
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post #7 of 12 Old 08-27-2010, 01:26 PM
kickingprop
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I'd stay with the 258 but keep your eyes open for a T176. 258/T176/D300 is a fantastic drivetrain combo for the moderate wheeled/streeted CJ

1985 CJ7 Project
Phase One : 5.3L Vortec/4L60E, Moser axles for AMC20, Twin Stick'd Dana300 - Completed
Phase Two: Bedliner, Rollcage, Seats, BESRK Rear Bumper w/ tire swing, Soft Top, and a few other goodies - Mostly Complete
Phase Three: Waggy 44 front, Scout D44 Rear, 4.56's, ARB's (F/R) SOA with YJ Springs, 35x12.50x15 BFG MT - Not Even Close to beginning

Also a mostly rust-free 1970 Scout 800A That I'll get to start working on someday...

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post #8 of 12 Old 08-27-2010, 01:29 PM
Jeepican
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258 is pretty darn reliable if you ask me....it might could use a diaper change every now and then tho...

1976 CJ5 - 232 I6, MC2100, YJ Booster, Front disc conv, 2.5" BDS, 1" Body Lift, .5" lift Daystar Shackles, 33 x 10.50 BF KM2, Twin Stick
My Build Thread

"Oh, you're just full of fun today, aren't you? Why don't we go up to the old people's home and wax the steps?"
-Barney Fife-
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post #9 of 12 Old 08-27-2010, 06:25 PM
brandon20
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whats the difference between the 176 and 177? is it just the gear ratio? i thought most cj's from 1982 on have the 177 in them.
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post #10 of 12 Old 08-27-2010, 11:18 PM
RangerRick
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T-177 is from a full size Jeep/pickup, it has a longer input and is different. You want a T-176 from a CJ.

RangerRick
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post #11 of 12 Old 08-28-2010, 04:16 AM
jcal73
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Quote:
Originally Posted by RangerRick View Post
T-177 is from a full size Jeep/pickup, it has a longer input and is different. You want a T-176 from a CJ.

RangerRick
My T-177 is from a CJ. There are some out there.

Jeff
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post #12 of 12 Old 08-28-2010, 08:25 AM
brandon20
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what are you talking about? I thought the t-176/177 were the exact same tranny except for the the 3.82 versus 3.52 first gear ratio which gives the 177 a little more pop in first. the output shaft is a bit longer i also have in my 1985 cj. maybe somebody mcan glarify this and if more 176 or 177's are out there
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258 inline 6 , 4.2 liter , cj7 rebuild question , engine swap

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