• Notice for iPhone users: DO NOT use the image size reduction option when uploading photos to the forum. This causes portrait images to post as landscape. We have added a warning to the image insert pop-up as well.

JAREDO

Like where this is going…
 
No worries folks.. the CJ grill is going back on ...
 

Attachments

  • grillmount3.jpg
    grillmount3.jpg
    175 KB · Views: 17
From all appearances, I may have to eliminate the mechanical fan because of space issues and the LJ radiator is toast anyways. So, open to any reommendations of CJ radiator with integrated electric fan upgrades?
 
I put Novak in my CJ 6 build. Not cheep but a good radiator/fan combo. I used a chevy conversion system for the 4.3 V6 I used.
 
updates long overdue and I'll type much longer update in front of computer. But, we are back on track. took advantage of speedhut guages labor sale and rcvd them this week.

the frame, motor trans everything is swapped, we have been driving it in and out of shop for quite a while.

First up rebuilding a rusty heater box and then trying to tackle the guages.

I'll start using all the vast people and resources of this site now to help me through these steps.

this jeep had a factory cruise control unit. Of course won't want or not usable with this 4.0. Is this box under the driver side a control box for it?
 

Attachments

  • 20230922_170617.jpg
    20230922_170617.jpg
    142.5 KB · Views: 14
Sadly this CJ8 has been quite neglected over the last 6-8 months. Made a little bit of progress in the last month or so. Finally pulled the heater box because the heater core was leaking. I had initially just looped the water lines and by passed the heater core during the frame/motor swap but have to address it now. Pulled the heater box, did the fan upgrade, replaced a few cables, resealed the box and its finally back in. flushed the coolant lines, and refilled tonite.

now onto the guages and the dash hot mess. The original guages are still in it, but I do have all new speedhut guages. The underside of the dash is a hot mess and will need to clean up at the same time.

Need to address the drivers side fender where it bolts to the tub, when the frame was bent in half before, the drivers fender was actually pulling away from tub. So, the inside flange is shot, and i'm just going to pull it, and make a quick piece of angle iron to weld to the fender with new firewall holes to bolt it on there. should be stronger etc.
 
Heater box rebuild done and installed. Onward to wiring and gauges. refresher, the drivetrain is a 2006 LJ w 4.0 automatic. The CJ engine harness and the LJ harness were sent off to HotwireAuto and they completed their magic. Originally didn't know if I was doing new gauges but have recently bought all new Speedhut gauges (inc temp, oil pressure and voltmeter). The 4.0 motor still had the 06 sensors in them and they were plugged up to the new harness and the jeep was running fine but I had never hooked up any gauges even the old 258 dash gauges. They were still in the dash and the original dash wires to them were still hooked up. Hotwire had 2 extra wires (one purple and one purple with white tracer) on the engine side of firewall labeled temp guage and one oil guage. And they had the right angle single wire, old school push on connector on them. I've talked to Hotwire and I've also read and searched and really struggling with this whole dual sensor notion for the oil and temp.

I've already bought the Hesco high flow water pump housing that has the dual sensor mounts. I have not bought the brass T for the oil pressure fitting yet.

When I talked to the Hotwire guy, I guess I don't know if I explicitly asked him if the new connections that he labeled on the harness for the oil and coolant sensors were supposed to be used ONLY if you were using analog gauges AND if you switched the 4.0 sensors out to be 258 old style sensors? Wondering if I only bought an adapter fitting to ONLY use the smaller speedhut sensor into the existing 4.0 location but just didn't use the "hotwire" factory sensor plug, would the 4.0 computer even care?

So, when I remove the coolant temp sensor from the speedhut wiring bag, it has correct thread for the hesco housing. But, the length of the sensor once threaded into the housing interferes with the existing 4.0 coolant sensor. So, my only options on the coolant one are :

a. trim the end of the brass sensor off so that doesn't interfere with the other sensor (but I don't know if this will affect the reading of the sensor)
b. plug that newer/smaller hole for the speedhut sensor hole on the hesco housing and go to a rubber hose type mount
c. plug that newer/smaller hole for the speedhut sensor hole on the hesco housing and try a T fitting into the existing 4.0 sensor location. (but I suspect I will have the same interference issue on a T or elbow fitting.

I'll post up pic on separate posting with phone.

PS.. I'd rather be worrying and working on suspension than fighting with these little battles.. :+)
 
I’d talk to Speedhut about the ability to trim up that one first.
 
So, a bit irritated at the whole thing. I recalled using this high flow housing on the original scrambler I restored and don't recall any of these issues. Found the documentation for the speedhut sensor and they do say you can trim it, so I trimmed the end of it and was able to get both of them to clear on the inside of the housing. Went to mount the housing onto the block and determined that the sensor was sticking out to far into the path of the fan blades. Not willing do do the electric fan thing just because of this issue. So, I'm back to just plugging the 1/4 gauge sensor hole and using the coolant hose inline mount. Ordered one today and hope to have it later.

I called Lee @ Hesco and surprisingly, he said he's never heard of that front mounted sensor interfering with a fan blade, suggested mounting spacer on the fan shaft but told him I was already up against the radiator.
 
Also determined that an elbow or T will not work either because of how much of the sensor sticks inside of the housing..
 
I use the same Hesco t-stat housing on my red Scrambler's 4.0. I use the side port for the engine computer coolant sensor and use a much smaller gauge sending unit in the front facing port.

1715045469879.png

I have a 4.0 BUT I am using my old 4.2 front accessories/water pump/fan clutch, so maybe I have a bit more clearance?
 
Last edited:
spankrjs said:
I use the same Hesco t-stat housing on my red Scrambler's 4.0. I use the side port for the engine computer coolant sensor and use a much smaller gauge sending unit in the front facing port.

View attachment 113571

I have a 4.0 BUT I am using my old 4.2 front accessories/water pump/fan clutch, so maybe I have a bit more clearance?
Click to expand...
Yep, that looks like you have all kinds of more room than i have. This is a complete setup/fan/motor/trans/fuel/frame everything from a 06 LJ.
 
You must log in or register to reply here.
Back
Top