Topic: engine/trans swap

[BigCountry]

i'm debating on swapping a small block in or trying to give my squirrels steroids, and i've seen yjmechanic's thread on the performance 2.5, and searched around a little, but just wondering if there's an adapter out there to get the ax15 and the np231 that's bolted to my 2.5l. i know it's a 23 spline on the ax15 an 21 on the t-case, but i haven't been able to find just the shaft or an adapter kit. thinking of an LT1 for the swap, but it really all depends on the good will of the junkyard gods 

[BigCountry]

i know advance adapters has everything else i could need for the swap (just about)  and i noticed they didn't have anything to mate the 5.2L to anything...really my only reasoning toward the 5.2L dodge engine is availability. may also be a dumb question, but what donor cars am i gonna find the LT1 in?

[Jeffy]

i'm debating on swapping a small block in or trying to give my squirrels steroids, and i've seen yjmechanic's thread on the performance 2.5, and searched around a little, but just wondering if there's an adapter out there to get the ax15 and the np231 that's bolted to my 2.5l. i know it's a 23 spline on the ax15 an 21 on the t-case, but i haven't been able to find just the shaft or an adapter kit. thinking of an LT1 for the swap, but it really all depends on the good will of the junkyard gods 

You buy a OE 23 spline input shaft for your NP231.

http://www.novak-adapt.com/knowledge/np_nvg_input_gears.htm

[BigCountry]

just fully straightpipe the exhaust system on the 2.5l that should take care of everything

I'm sure that PENNDOT would love that! so would the inspection and emissions guys, and the cops too!

[BigCountry]

so i've read the cummins 4bt can house pretty much unlimited power, but according to my dad, the are hard as hell to start in the winter and slower than a snail off the line. somebody try and sell me on it, and i might consider it over a V8 or a 2.5 build up. i guess we'll just have to see...

[FourbangerYJ]

There is a bunch of video's on youtube with the 4BT. Put in 4BT or Cummins 4BT in the search. I don't think they have glow plugs so winter starting could be a problem. You could put a heater of some sort that keeps the oil/water warm which makes starting easier.

[BigCountry]

lol it was sarcasm. though all needed is a cat muffler and egr present pre-96 vehicles. there is no diagnostic check

i knew it was sarcasm. hence my reason for replying that way lol

[stan98tj]

There is a bunch of video's on youtube with the 4BT. Put in 4BT or Cummins 4BT in the search. I don't think they have glow plugs so winter starting could be a problem. You could put a heater of some sort that keeps the oil/water warm which makes starting easier.

one of the videos i saw about those engines was from a shop in canada that does the swap. they mentioned having no problems in winter starts, though they claimed a slight issue at somewhere around -35* or so. So they prob have glowplugs then again they could be full of crap...

[YJmechanic]

i have thought about the 4bt alot.  i have never seen anyone with the swap having any power issues with them at all.  maybe if the gearing doesnt match the motor output then you may get too much low end.  they are rated for about 300lb/ft so i think the low end should be fine.  well see what happens but im in pa too so maybe we can fight over the swap parts around the area what part are you from?

[Jeffy]

one of the videos i saw about those engines was from a shop in canada that does the swap. they mentioned having no problems in winter starts, though they claimed a slight issue at somewhere around -35* or so. So they prob have glowplugs then again they could be full of crap...

4BT doesn't use glow plugs since it's direct injection, IIRC.  Some people have added grid heaters.

[stan98tj]

4BT doesn't use glow plugs since it's direct injection, IIRC.  Some people have added grid heaters.

I stand corrected sir. You are both correct-no glow plugs for the 4bt or 6bt.

[YJmechanic]

6bt uses a grid heater on the intake,  i have seen the same thing adapted for the 4bt

[BigCountry]

i have thought about the 4bt alot.  i have never seen anyone with the swap having any power issues with them at all.  maybe if the gearing doesnt match the motor output then you may get too much low end.  they are rated for about 300lb/ft so i think the low end should be fine.  well see what happens but im in pa too so maybe we can fight over the swap parts around the area what part are you from?

west chester. about 30 miles west of philly. about 10 miles from king of prussia

[Bounty Hunter]

I've got a bunch of 231 input shafts if anybody is considering a conversion.  I also recommend scoring a wide chain kit and 6gear planetary if you want to make the 231 live behind a v8.  I've got mine setup this way, I don't think the 2.5L is gonna hurt it LOL.

[FourbangerYJ]

I've got a bunch of 231 input shafts if anybody is considering a conversion.  I also recommend scoring a wide chain kit and 6gear planetary if you want to make the 231 live behind a v8.  I've got mine setup this way, I don't think the 2.5L is gonna hurt it LOL.

How wide is the standard 231 chain VS. the wide chain?