Hilux motor

[Dustbowl]

You are right kyphonii, I'll safely bet the Chrysler I6 would have done it in overdrive
Raisins, the Buick 6 isn't a "bad" motor, it's just not particularly impressive either

[Raisins78]

Well, we each have our own experience's. Ive been in half a dozen different cars with that conversion done, and every one was more than impressive (The gemini was insane!)
All of them were lighter than a WH or similar, as is an XJ. That motor seems to really open up in a lighter vehicle. What does an XJ weigh? 1500kgs?
So its already lighter than a WH (over 1700kg's)
Take away the extra 100kg's because the engine is lighter again...so now you have a 1400kg XJ with 400nm of torque (more with some basic mod's like a nose upgrade, intercooler etc), available from idle..... I don't see the bad side?
Yes a turbo would probably be faster....but torque is king, especially off road.
You can not get a turbo to match the torque down low of a PD Blower...
Because it is a factory engine, then alot of the guess work is gone too. (Unlike turboing the jeep motor, which can give rise to design issue's not meant for boost etc.)
As I said, each to there own, but I know which way ill be going.... The L67
If money is tight, I would just stick to a stroker 4.7 etc as it still improves bottom end torque etc unless I could source all the bits for the L67 at around the same price.

[kyphonii]

Put a 4 liter ford xr6 turbo. Never been a v6 Buick that could best that 6 cyl

[Raisins78]

Originally Posted by kyphonii

Put a 4 liter ford xr6 turbo. Never been a v6 Buick that could best that 6 cyl

Your completely missing my point.
If you want a rocket, yes the XR6 Turbo engine or a worked LS1 etc is the go.
The Supercharged engine would wipe the floor with both, off road.
Anything with a turbo has lag, lag means higher revs to get forward momentum, which means less crawling control and more risk off damage by over shooting.
The LS1 would chew tonnes more fuel.
If I was going to build an XJ to attack the quarter mile...it would be alot different to one built as the ultimate 4x4.
Since 99% of people on here are 4x4er's not racers, a big powerful turbo 6 is only going to disappoint.
Im not trying to pick fights, but trying to help people understand what makes a car "work"
I could get a corvette spec 700+HP engine to fit in the XJ too.....but its wasted.
My belief is if you want to go FAST....probably best to buy another car, and keep the Jeep for camping. I have seen a Hilux with XR6 Turbo motor squeezed in (very tight fit as the engine bay isn't overly long)
It was the biggest hunk of crap in the rough stuff, but yes, it flew down the highway on the way home.
Stick it in low range, try and crawl it through a hard section of steps, drop offs, large ruts and rocks...and you will find out how unpleasant all that boost and lag is. It stalled if going too slow and had no boost to pull it out of tough situations....or he drove it with the revs up so it had boost, and it was way too fast to control safely and he pretty much bent and cracked half the undercarriage. My GU 4.2 turbo was like that too (though not as bad) if the revs were too low and it had no boost, it was a dog, would stall if you hit a large root, rock etc.....so you had to try again with a few revs up it, and crash your way through. Definately not the greatest crawler/overtaker etc

Just my opinion, and it all depends what you want to use your car for.
If its just towing, highway, round town with some soft off roading and camping....yeah the XR6T motor would be good.
Same as if you wanted to race people from the lights and 2F2F your XJ...go the big turbo6
If you want to use it as a real 4x4....it would be a waste of money.

Ill shut up now, I don't think I could explain it any better. Either people get what I mean, or they dont.

Ill leave you all with a picture of a 4x4, that would definately NOT be good at crawling or real 4x4ing...but would be very VERY fast....and would climb a sand dune faster than sound i reckon......p.s. no, its not an XR6 Turbo motor lol

[Dustbowl]

Some very good pointers there Raisins, I do understand your argument, I have worked quite little with holden/Buick motors and I assume you have had limited experience with the blue oval, horses for courses...
No I'm not about to put a G6turbo motor in the jeep but...
That red rocker was never a bad idea

[RED_TJ]

Back to the question, I looked at doing this conversion with my TJ, I was planning to use the 3lt (5L) non turbo motor and try to hook it up to the AX15 gear box, or use the Toyota R151 Gear box as its very closely related to the R151 ( extract from Novac... The AX15 is found behind the AMC 258 and the Mopar 4.0L (242 ci) I6 engine. The AX15 is also found in Dakota trucks and is closely related to the Toyota R151 as found in the Supra Turbo and Four Runner) and then make an adaptor for the transfer case and add a turbo later after market of course.
The 3L Toyota motor, if you get a early one does not run a computer so hook up would be a lot easyer to the Jeep wiring, I would use the Jeep oil and water sensors in the Toyota motor, the fuel and volts should not be a problem as you are not changing them, speedo will work, only thing I am not sure about is the tacko. you will no doubt, need new exhaust, drive shafts engine mounts, gear box mounts, probably a new radiator and a lot more....... cost who knows a engine conversions is never cheep, double what you think you can do it for and you might be getting close. same with time, if you think it will take you 3 months it will take double that. You may ask how would he know what he is talking about? well I have a LS1 Gen3 road rego TJ. expensive yes, fun to drive.... Fu#k yes, but the satisfaction of doing it yourself is worth it for me, but each to there own, I guess.
So do it, be a leader and if you do let us know each step you do as I can guarantee. Once somebody does it once and does a dam good job. then more will do it.
any way just my thoughts Have fun and keep on jeeping

[bruggz351]

I thoroughly understand ya Raisins.
My choice would be an N/A Crossflow, they're torque monsters.
I don't know too much about later stuff, but the old Iron head in my Corty could literally fry the bags in 1, 2 and 3. In the wet, fan the clutch and sail sideways in top. Ran outa puff over 4500 though. But thats not needed in a 4b.

I've never had good experiences with the commo v6, except the early buicks. eg VN. But even the VN felt a trailer. The 2.6 in my sigma tows better than the commy ever did.

Thats just my experiences.

cheers