bc99xj
NAXJA Forum User
- Location
- surprise,arizona
i have the box with the part# on it that i bought from napa and it worked perfect for me. i have a 99 classic stock 4.0 HO
HD fan clutch upgrade...
- Thread starter xj88superjeep
- Start date
i have the box with the part# on it that i bought from napa and it worked perfect for me. i have a 99 classic stock 4.0 HO
eleduardok
NAXJA Forum User
- Location
- Waverly Indiana
Well I have a pict of the box, same part number, fan holes were wider and clutch studs were bigger then the holes on the clutch. its a 95 country, 4.0 all stock, OEM stuff. dunno
- Location
- Harrisburg, NC
Just did the first trail ride yesterday with the HD clutch. Outside temps were 97-100 degrees (figures it would be the hottest day of the year) and the Jeep did great! Electric fan only kicked on a few times from crawling and that was mainly when I was going over rocks...aside from that it did a great job of keeping the Jeep cool. Had I still been running the stock clutch i'm sure the electric fan would have been on almost non stop.
Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
Picking mine up from NAPA this afternoon on the way home from work. With the summer time heat I'm running 220 on the highway and above 210 around the slower streets. I'm hoping this will put me back at the familiar 210 even on the 100 degree days here in Houston. $42 something.
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dagr8tim
NAXJA Forum User
- Location
- Columbus, Oh
I think you should be running cooler on the highway than on city streets in stop and go traffic. I'd see if your rad is clogged up.
Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
3 core CSF radiator (little over a year old). Coolant if full and a pretty green color. Not saying you are wrong, but I can't find any problems that point to a clogged radiator.
bigdaddyjlove
NAXJA Forum User
- Location
- Atalanta
I don't thinkhe meant internal clogging. I think he was asking if its plugged on the outside, keeping aif from flowing
Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
Thanks, but I think I've covered that aspect as well. I took it down to the car wash and washed out the condenser to the radiator. No bent fins, on the condenser.
I'm working with a mechanic online and all the testing he has me doing is in the fan clutch direction. I read this thread a while back and thought a replacement fan clutch couldn't hurt.
- Location
- MilkyWay Galaxy
I see that the NAPA clutch is 0.15" taller from the spec sheets. Does anyone know about the autozone or advance brands, are the same, taller, or shorter than the stock FC?
Has anyone here done this upgrade on a renix jeep?
If so which radiator did you have, and what if any problems did you have installing it (clearance), or clearing the radiator?
I am starting to get the impression that the Renix radiators may be slightly closer to the stock clutch than the HO engines?
Are the shrouds different between Renix and HO?
And FYI, the fan mount height on the stock and HD NAPA clutches discussed here differ by .35" as well the overall 0.15" difference in overall clutch height.
I can barely install my stock clutch on my Renix with out moving the radiator off it's mounts on the top side (to lean it back enough to clear the studs) and I have a 1 row aluminum radiators.com radiator.
Mudderoy,
I have never had my jeep run hot here in Houston, not in 4 years, but the last few days have had me shivering as the system has peaked up to numbers like 235 F idle in the driveway at the thermo housing, in park with the AC on. It never got over 200 F before this week. I hear it hit 104 F here yesterday, 108 F heat index!
Has anyone here done this upgrade on a renix jeep?
If so which radiator did you have, and what if any problems did you have installing it (clearance), or clearing the radiator?
I am starting to get the impression that the Renix radiators may be slightly closer to the stock clutch than the HO engines?
Are the shrouds different between Renix and HO?
And FYI, the fan mount height on the stock and HD NAPA clutches discussed here differ by .35" as well the overall 0.15" difference in overall clutch height.
I can barely install my stock clutch on my Renix with out moving the radiator off it's mounts on the top side (to lean it back enough to clear the studs) and I have a 1 row aluminum radiators.com radiator.
Mudderoy,
I have never had my jeep run hot here in Houston, not in 4 years, but the last few days have had me shivering as the system has peaked up to numbers like 235 F idle in the driveway at the thermo housing, in park with the AC on. It never got over 200 F before this week. I hear it hit 104 F here yesterday, 108 F heat index!
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veedubshafer
NAXJA Forum User
- Location
- Palmerton PA
HMM, both of my RENIX rigs the fan is about 1.5-2" from the radiator.
Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
Hey thanks for sharing that. I've been fighting this running over 210 for a couple of years now. That damn needle was just touching the first hash mark after the 210. What is that 237 or something isn't it?
I just got back from a I-10 test drive. Temp was just over 210 at 70 mph, which is 2800 rpm. At 65 (2500 rpm) the temp got a little closer to 210. We'll see what it does tomorrow around Noon to 5pm.
I'm getting ready to read back in this post a little bit, but that damn clutch (or the fan spinning faster) makes a high pitch squeal at about 2800 rpm! WTH!?!?!
- Location
- MilkyWay Galaxy
Same with mine. The fan mounts on the back side of the clutch, so the clutch face sets about 2" closer to the radiator than the fan does.
The problem is you need about an inch of extra room to get the back side of the clutch over the studs before it will set down in the mount area. The standard clutch rubs against my 1 row radiator when you slide the back of the clutch over those studs, so an extra .15" makes a difference in the installation method. I am looking at 2 row radiator upgrade, and I am afraid the standard clutch will require tilting back the radiator during the install, and it will be closer to the clutch face, I think. If I combine that with the ZJ clutch I am afraid it may be close.
veedubshafer
NAXJA Forum User
- Location
- Palmerton PA
I finally put mine in today and it was tight getting it in - I got it wedged in there and tapped it overthe studs with a small hammer LOL. Once it was over the studs though it was fine. Didn't drive it yet since my rear DS is about to fall out.
Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
Strange. I had plenty of room between the new clutch and the radiator, and mine is a CSF 3 core.
- Location
- MilkyWay Galaxy
Is yours the 98? I suspect there some clearance difference between renix (closed system) and the HOs, open system radiators. Veedubshafer, and mine are both Renix.
Interesting that you got yours in with a 3 row radiator. My 1 row radiator has about 1/2" of extra room in front and back, as the 1 row is 1.5", and the tanks are about 2.5" wide.
Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
Yep 98. Yeah from reading here I thought I might have a problem with the clearance.
- Location
- MilkyWay Galaxy
Did you loosen (open up) or tighten the coiled spring? Which way did you go?
- Location
- MilkyWay Galaxy
Did you ever install this?
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veedubshafer
NAXJA Forum User
- Location
- Palmerton PA
praetorian
NAXJA Forum User
- Location
- La Mirada, CA
When I did this install using the NAPA part, the new fan clutch was also a little wider making it too close to the radiator to easily install it. I have a two core all metal aftermarket radiator installed. To make room, I unbolted both engine mounts and jacked up the engine so it would pivot back about an inch to give me enough room to install the larger fan clutch. I've had it installed for about 5 months now and wheeled it with no interference with the radiator. It also seems to keep things a bit cooler out on the trail.
