For the squirrel powered guys

[ArticRubi]

http://www.jeepforum.com/forum/f369/yj- ... d-1409941/

This fella worked out putting a volvo turbo on his 2.5L YJ.

[ZAEDOCK]

Nice link. I've been researching home brew turbo set-ups for my buggy. I've put a decent amount of work into the 2.5L in my trail Heep and plan to leave it NA. The head/intake work and 4.0L TB allow it to hold highway speeds with 38's (even at 6-7K feet of elevation in Moab). She's been very reliable and I don't want to mess with it. I may add a header very soon though and have been checking into a set of roller rockers. I think a warmed over NA 2.5L has the potential for 140-145HP (stock XJ 2.5L's were 130HP) with a nice seat-of-the-pants increase in torque with the stock cam.

Getting back to the buggy, the chassis doesn't have a lot of engine room, so I have finally decided to mate a 2.5L to my spare SM420 and was toying with a turbo setup from a 2.2/2.5 Chryco K-car platform. The boost should be right on and the only thing I might do is run head studs. The Ford 2.3 setup is also another possibility. I didn't think of using a Volvo unit and this guys thread is pretty interesting. It looks like his "tuning" is all done through fuel manipulation (increased pressure, colder plugs, etc) as he runs the stock EFI management. I don't know what the long term effects of running 58 PSI of fuel pressure in a 40PSI system will be, but it looks like it's been working for him. I guess with his O2 monitoring, he's good to go. 14.7 is 14.7 whether you're NA or TurbO'd. I'll have to do some digging into the Volvo components.

Thanks again for the link!

[ArticRubi]

Yeah I thought it was a pretty cool garage build. Not sure I'm 100% on board with his adjustable boost...seems like a pretty poor idea to expose your engine to such a lean condition. Just wondering, have you considered something like a VW 1.8 TDI for the buggy? I know it's a pretty popular Sammy conversion, not sure about the mating implications with your 241 thought. Just a thought if you haven't already bought another powerplant.

[ZAEDOCK]

There are a couple of companies that make a plate for the VW motor into Suzi swap. I hear it makes 'em run like a raped ape.
I haven't really considered a VW or other powerplant though, as I already have a couple of options in my shed.

What I have in stock:

Engines:
1993 Jeep 4.0L
1994 Jeep 2.5L
Chevy 305 TBI truck engine w/275 ft/lbs tq (<- probably going to my brother)
Chevy 355ci that would need to be detuned with an off road cam

Transmission:
Muncie SM420 w/ bellhousings for both 90* and 60* (Jeep 2.5L, GM 60*V6's, etc) engines
NV3550
TH350 Chevy pattern

T-cases:
3 NP231's
Dana 300


The buggy chassis is quite small and lightweight, and as my Heep's current 2.5L/SM420 setup seems to work well, I was thinking of emulating the drivetrain. I also have an uber reliable 4.0L complete with harness and all accessories with a NV3550 5 speed that would work too. The thing is, it's narrow enough to fit width wise, but it's kinda long and definitely on the heavy side.

I pretty much have all of the clutch components, bellhousing, etc to mate the 2.5L/SM420, but the same bellhousing could also be used to mate a late model GM 60* pattern V6 and put me in excess of 200HP without the weight of running a Jeep 4.0L .

I could also get a 904 from an early Cherokee very cheaply if I wanted to go with an automatic. I prefer manual tranny's though.


Like any other build, there are a million options. I think if I really did decide to go with a lightweight GM V6, I would get a 3.4L from a 93-95 Camaro. Then again Isuzu also makes a nice 3.5L DOHC that also uses the Chevy pattern.......AHHHHH the options..........

[Elwood Blues]

as nice as a turbo on lisa's yj sounds she told me she already wants a v8
aww shucks