Anyone turbocharge their 4.0 HO?

9

95RedCherokee

NAXJA Forum User
Location
South Carolina
I'm fairly skilled in fabrication for charge pipes and everything. I made my own kit and manifold for my turbo honda. its not that tough, but I would like to hear some input from some of you guys.

I Was looking towards the idea of turbocharging the 95 4.0 in my xj. Has anyone done this? The only problem I see would be intercooler piping....where would the intercooler go? I have a pretty stuffed front grill, with tranny cooler, radiator and ac condesor. Mayeb I could use a side mount intercooler from a DSM in the stock airbox location, but I would have to make some sort of heat shield so it wouldnt get heat soaked from the close manifolds.

a turbo 4.0 looks like it would be really efficient with the 3ft of piping it looks like it would require to run charge pipes.

What type of engine management would be used for it? Megasquirt? or would it just be easier to do an fmu on this? I stay away from them on my hondas, but I dont know a ton about the Jeep. this would be a low boost application (7-8 lbs). My honda is running 12psi on a stock motor and running strong and healthy.

What size are the stock injectors and MAP sensor? I'm thinking I would use dsm 450cc injectors and a 2.5bar motorola MAP sensor if I went with some sort of engine management.

Are there any other issues with turboing the XJ?

TIA!
 
Try the street and performance forum...

been done...

all 3...

turbocharged...

supercharged...

nitrous...

Try a search over there.
 
I have searched and am still searching, but the search shows tons of results that dont have any relevance.

One guy used a FMU with mustang injectors....is an fmu the only way with the jeeps? I would like to do a engine management with it, since I will be able to datalog and really tune for optimum results.

One guy ran his with no intercooler, but said he added one later...his pics dont work anymore....:(
 
http://www.naxja.org/forum/showthread.php?t=21103&page=2&pp=30&highlight=turbo+4.0

If no pics work, drop the guy a message! I'll do a little looking around, but check the...oh hell, here:

http://www.naxja.org/forum/showthread.php?p=644309#post644309

Do some advanced searches. Whittle down what you are looking for. Don't forget about putting key phrases in quotes and all that jazz. If you're gonna drop $2K, why not drop my local "friends" a line at Avenger and supercharge it? It's more money...but it's tried and true. Some folks even say you get better gas mileage.

-Rich
 
95RedCherokee said:
well, I'm sure I could get it done under a grand using all used parts. I will fabricate everything myself. I'm a decent welder...
Click to expand...
exactly how good are your fabrication skills?

i designed a new turbo setup for my stroker.....and i need someone to fab me up a manifold for it that works with the setup....and im willing to pay for good work...
 
I am confident enough to make my own manifold for the honda, because I know where to find flanges and stuff from. I have no idea where to find this stuff for the jeep. I was actually thinking about doing something with the stock header and bring the 'collector' under teh motor behind the oil pan and up on the other side. it's a ripoff of another companies design, so I wouldnt really be able to sell it.

My first idea was to just weld a T3 flange where the header and downpipe bolt together and hang it there, but I'm not so sure about that anymore....I have a bit more research to do on Jeeps before I attempt this.
 
Here is a picture of the downpipe I made for my Honda. I had a muffler shop do some work to it, but after I saw the horrible job they did, I bought the welder and finished it and did my charge pipes and all.


wMTEzMDA0MDZzNDEzZGZkMzF5NTQx.jpg
 
I did the welds on teh exhaust flange, flex pipe and turbo flange. That was like my second time ever welding. I use a Lincoln Electric Weld Pak 100 HD with flux core wire. It does a great job even at teh lowest heat settings. It has suprised me time and time again. I'll be getting the gas upgrade sometime soon. I welded my entire 3" exhaust for the crx with this welder as well. There are no leaks on my downpipe or anything else. :)
 
95RedCherokee said:
I did the welds on teh exhaust flange, flex pipe and turbo flange. That was like my second time ever welding. I use a Lincoln Electric Weld Pak 100 HD with flux core wire. It does a great job even at teh lowest heat settings. It has suprised me time and time again. I'll be getting the gas upgrade sometime soon. I welded my entire 3" exhaust for the crx with this welder as well. There are no leaks on my downpipe or anything else. :)
Click to expand...

ahhh they make a gas conversion for that welder ..get it ! it will make your welds look a lot better. Also just practice will help more than anything. I have the same welder and am getting the gas kit for it. Most stuff I just take to school to weld.


Yea, it doesn't matter what it looks like if it doesn't hold up or has leaks
 
95RedCherokee said:
I am confident enough to make my own manifold for the honda, because I know where to find flanges and stuff from. I have no idea where to find this stuff for the jeep. I was actually thinking about doing something with the stock header and bring the 'collector' under teh motor behind the oil pan and up on the other side. it's a ripoff of another companies design, so I wouldnt really be able to sell it.

My first idea was to just weld a T3 flange where the header and downpipe bolt together and hang it there, but I'm not so sure about that anymore....I have a bit more research to do on Jeeps before I attempt this.
Click to expand...

well...if i were to send you the diagrams of the setup...do you think you would be able to fab one up?
 
95RedCherokee said:
to be honest, I dont have time. I work full time and go to college. I barely ever get to mess with any of my projects lately. Sorry man.
Click to expand...
fair enough....its cool
 
the next best place for a intercooler would be to make as vent on the hood above the spark plug side of the hood and mount it under the hood.A racing shop hear in tulsa made the same idea on a new imprezs WRX.
 
Not a bad idea. I'd just have to get creative with the charge pipes. That makes things a little better, and allows me to put the turbo where the stock airbox is. Thanks for that idea!
 
Run soft hose and or just mount the hood right under the hood not atached to the hood like I was thinking.

The soft hose would easly tuck away and would extend when the hood is open.I made my turbo for my old crx by using a turbo from a older eclipse and I snagged A intercooler from a wrecked evo lancer.Made the entire thing for under 300 dollars.most expensive part for me was the turbo header(used ebay)motor was JDM B18C5
 
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