Putting a newer jeep Manifold on a 93 YJ

[Smackey]

I have a 93 YJ 4.0 with a cracked header. Would there be any issues with putting the newer style manifold off a 2000+ model as apposed to a 400$ banks?

Scott

[mckeddie]

i've got one sittin in my garage, almost put it on this weekend, but decided to wait till winter when i have the whole exhaust redone. i just welded up my stocker again (4th manifold i've cracked). anyways, i am going to have my exhaust rerouted around the front of the oil pan like on the 00+ you can find that front pipe cheap in a junkyard. i paid $50 from wabash auto (www.wabashjeep.com) for my manifold. i could have had the front pipe with it, but it was dented pretty bad, and it was the only one they had. i say go for it, and tell me how it works. the only thing i see that might give ya probs is the manifold gasket. i was going to have them pull a new TJ gasket saturday when i picked up my new one to compare, but forgot about it.

greg

[emyselfandi]

y not call borla and ask them what the diff. is between the 93 and 2000 model headers? Woth a shot. I ran with a crack in my header for over a year. sucked and its one of the most common things on a jeep. I spend 400 on a set of borla headers. Thing is its 100% guar. for life. I'll never have to buy one again and i plan on having the jeep for a long time. Its a big job. Full day, there is a lot of sheit to move out of hte way. I picked up a used borla catback for 100 bucks on ebay and replaced my rusted out cat. converter. That with a intake i get about 350 to a tank of 20 gallons (stop and go city driving too). Not bad for a 4.0 jeep. It sounds much better and deff. can feel more power. But in the end do what you want. Its your jeep. Good luck. :brows: :brows:

[Smackey]

Yep, Right now it is between this and the banks. So I will do some more research and see what I can come up with. I just hate the gas mileage and need to do a valve job anyways so I might as well replace the header.

Cheers,
Scott

[subzero]

Fork up the extra dough and get the Banks!..you pay more now,but you will only be dealing with another cracked manifold down the road later and with the expense there plus all the extra labor and hassle,it is MUCH better to do the Banks now and be done with it!...Mckeddie has had 4 cracked manifolds and keeps putting them back on?.....No way for me!...The Banks is definately the best way to go...

[mckeddie]

-=- originally posted by subzero -=-
.....you pay more now,but you will only be dealing with another cracked manifold down the road later...Mckeddie has had 4 cracked manifolds and keeps putting them back on?.......

i have zero dollars invested in mine. i've actually had a couple rewelded a couple of times, this was this ones 2nd time being rewelded. as to the 00+ manifold, the reason to do this is b/c these are the redesigned manifolds. there is no way for these to crack, as they are basically just a shorty header. they don't run together, where the manifolds are prone to cracking. you get your nice banks in deep enough water, and i gaurantee it will crack (that is where all of mine have cracked). with the 00+ manifold, you will just hurt your exhaust pipe, if that. i'll try to get a pic later today if i get a chance, s you can see what this manifold looks like. it is basically a split manifold. you can also reroute you exhaust around the front of the pan, so it isn't in the way hanging down, ready to hang up on anything.
i still say go with the 00. for the money your spending on the aftermarket header, you aren't really getting any real performance increase.

greg

[wcjp]

I'd also like to reroute the exhaust. IMO this would help with a future flatskid project.

[corvettecrazy]

interesting post here:..Wow,if you have put 4 new manifolds on and it did not cost you anything I would probably do the same thing,but since I did not have that luxury I went with the banks also and have been very happy..Now,as far as the late '00-up header that is 2 pieces not cracking...totally untrue!...A club member of mine just last week had his crack on his '01 !!!..This one cracked where the primary tube comes away from the head and then makes the turn towards the collector...it gets necked down to a VERY thin piece there and "crack!"...:yup: Just an Fyi: I had my jeep on the dyno on because I have a buddy that works at a speed shop and he had run a Baseline test s couple months ago for me and since I was over his was I thought I would swing by and see if there was any actual evidence of improvement from the Banks additions..Keep in mind I have the header and cat back system and the peak increase from the baseline test awhile back showed I gained 17.2 Hp and 21lb-ft or torque!..I will be posting the dyno graphs up shortly for those who are skeptical about the performance increase that IS there to be had!..so,i would agree with Sub that the Banks stuff is worth it IMO,especially if you are in need of a replacement:yup:

[mckeddie]

that is a pretty impressive increase. i've never heard of anyone getting anymore than 5 or so out of a header. did you do just the header? or were there other mods done? is that at the wheels or at the motor? either way, that is still pretty impressive for a header. that is also the 1st i've heard of a new manifold cracking. oh well, i only paid $50 for it, so i'm still going to give it a try, mainly do to the rerouting.

greg

[corvettecrazy]

HEY,if you can get a manifold for $50 then do it...might as well!...Those are Wheel HP increases and not Flywheel HP #'s...I was very happy to see the results..I could tell there was a nice "seat of the pants" increase,just didn't know how much for sure...I have the Banks header and cat back system as well as a intake kit....that is it!...

[Smackey]

So, If i were to get one of these new manifolds, could i just reuse my existing exhaust(hehe)? I know i would have to take it and have the pipe re-run, but is there anything else I am missing?

Oh, what about oxygen sensor? Can I use the one on the 2000 with my 93 computer?

Scott

[corvettecrazy]

the newer manifolds have (2) o2 sensors at the collectors where they mate up to the downpipe...You may be able to plug one up and the computer will not have any probs,but you may have some issues...I am not sure about that one?..If you use the new one you will need to get all new pipes run and by the time you did all that work and put in the effort and expense ,you could have just bought the Banks and probbly saved $$$..Just IMO

[Shoowallagager]

Borla said that I wouldn't be able to warranty a header for a TJ if I put it on a YJ. I don't know about an 01+ header, but all TJ headers have a collector pipe that goes in front of the oil pan.
I went with a Thorley, the Banks sounds good, and had an exhaust shop bend a collector pipe in front of the oil pan. It was well worth. I no longer drag the collector pipe across the rocks, since it isn't lowest part on my Jeep. And my O2 sensor is in a much better place and doesn't have the wires pulled out of it when I have to drive over some sagebrush. Don't expect a power increase unless your header is really cracked bad.

[DPTDAWG]

So is the Banks header routed like stock? I am planning on getting one soon, but also would like to reroute the head pipe. How would this be accomplished with the Bans header?

CJ

[corvettecrazy]

the banks header is routed like stock ,but if you want to run a new pipe through a different routing then just get the header itself (part #51305) and then have a muffler shop etc. make you the corresponding downpipe any routing you want...no big deal