Fan clutch measurements JZ engine please

[c_ronius]

Could someone kindly measure the overall thickness of the JZ fan/ clutch assembly? From the mounting surface to furthest point of the clutch AND fan, if different. Overall fan diameter would be helpful too.

Is it the same mounting pattern/ overall size as a 7M? Any difference between GE and GTE on either?

Anyone know if there are aftermarket fans which are thinner?


OT: I need the overall thinnest combination possible. Never thought I had room until I saw another car (Dodge iirc) and it looked like the whole combination was less than 2.5". I've been using electric fans due to space constraints... but I just moved my whole drivetrain back for other reasons, and now I think I may be able to fit a clutch fan setup, which I'd prefer. My setup is from a Soarer so I already have the pully and bolts, but the rest is long gone so I can't get measurements.

Thanks,
Nick.

[c_ronius]

Purdy please...

[becauseican]

SC300 clutch and N/A mk4 2jz fan blade...

[c_ronius]

Are you saying that is what u have (...could measure)? Or that is the thinnest combo? I don't quite understand your response.

I'm looking for measurements on the thickness of it all... Any measurements you could provide would be very much appreciated.

[fstlane88]

c_ronius, I'll see what I can get for ya tonight, I have a 2JZ TT clutch and fan.

Randy, you were running the clutch fan setup with an aluminum radiator right, how well did that work? How close was the fan to the rad/shroud? Right now with the setup I have it's super close, even to an OEM radiator. Thinking about listening to everyone and going the N/A fan route, would like to sneak a big AL rad in there too, if possible.

[fstlane88]

Sorry with it installed on the car this is about as good as I can do, HTH. Let me know if you need any other measurements....

http://img.photobucket.com/albums/v508/fstlane88/Picture311.jpg

http://img.photobucket.com/albums/v508/fstlane88/Picture309.jpg

[c_ronius]

Thank you very much... appreciate the effort.

Looks like it's about 4.25" -I only have a little over 3.5, so I guess 2jz-gte combo won't work. :cry:

I'm still very curious if there is a thinner combo that will bolt to this engine. Went to Toyota to look at the options, but they weren't too wild about getting all the parts just for me to measure (very busy I guess).

Anyone know if the GE fan is thinner (or rides further back on the clutch)? Is the SC clutch thinner? I think that's what becauseican was getting at...


Mods... I know this is kind of off topic here since my swap is not in a Supra, and if you have to move it I understand... but I was hoping to get some extra attention from the JZ guys here for a few days if possible.

[fstlane88]

From my understanding the N/A 2J fan does sit farther back, and has to be spaced forward with washers to avoid hitting the waterneck. Maybe someone can chime in with pics or a measurement of some sort.

Also, you should be good asking your questions here man, we know not everyone puts 1J's in just Supra's.

[Dylan JZ]

FST88 you have PM.

[fstlane88]

Replied.

[Turbo Drifter]

c_ronius, I'll see what I can get for ya tonight, I have a 2JZ TT clutch and fan.



That set up did not work well at all for BIC, he ended up with a big hole in his Koyo rad at the drag strip. This happend in Vegas and he is now getting the parts he listed above to solve this issue.

Again a MKIV TT clutch & fan with Aluminum rad will not work, its just too clouse.

Jeremy

[fstlane88]

I could have told you that, hell I can't even fit my hand in between the fan and the rad on my setup. And that's with an OEM rad!!! :icon_eek:

I knew about what happened with Randy out in Vegas was wondering what setup was on the car then. Thanks for clearing it up. So he's going to still run an aluminum radiator with the new/different clutch fan setup??

[Turbo Drifter]

Thats right, he has the parts on order and we will see how they fit once they get here. If it fits I will be changing from my Spals over to the mechanical.

Jeremy

[c_ronius]

Anyone tried these low profile clutch fans from Flex-a-lite?
http://www.flex-a-lite.com/auto/html/low-profile-belt.html

Looks a little wimpy, but the ad in Summit says they move more air than stock. Don't know what their comparing this to, of course.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=FLX-1017&N=700+115&autoview=sku

looks pretty thin ...and looks to ride fully behind the clutch, so the thickness of the clutch would be the limiting factor in how thin I could get the assembly.

Anyone got a SC300 or Soarer fan clutch to measure?

I'll be going by Autozone shortly to see what they have in stock to measure as well. I found in a Dodge forum that a 90 Jag XJ6 clutch is only 2.75" thick, so I'm wondering if this will bolt onto the JZ pulley.

[Dylan JZ]

you guys need to talk to Aaron from driftmotion.. If I understood him correctly, there may be a better solution than the sc300/ GE fan setup. I didn't end up using it as I had some other issues, but it's definitely worth checking out IMO.

[becauseican]

Yes I have the MK4TT clutch and fan currently, with my Koyo race rad, it was like 1/4" from the fan. I slotted my motor mount brackets to slide the engine back as far as I could and ended up with about 3/8-1/2" between. I had wheel hop at SILV on the track and it caused the fan to clip the rad and take out my 2 week old $400 rad :(. It may work with the stock thickness rad. Apperently the SC clutch is thinner and the mk4 n/a fan sits closer to the engine. It makes it quite close to the water neck, but it works. I should have the parts here in a week or so, so I will see how it works.

[Evilempire1.3JZ-GTE]

On my setup I used a.

1)3000cfm Perma cool Efan its the 16" one with only a 10 amp draw. It fits inside the factory JZA70 fan shroud perfect. but you need to build standoffs to go between the bracket of the E-fan & the radiator it sits to close to the radiator.

2)Permacool 10 amp safe switch switches on at 165deg so you dont need to add a Relay a bonus there you cant run spals w/o a relay they draw a lot of amps.

3)Koyo 55mm thick race radiator.

4)TRD 2JZGTE thermastat.

The spacing between the Efan & engine parts is safe ~1" at closest parts.

I run this setup in CA summer days and keep Really Cool.

[c_ronius]

Yes I have the MK4TT clutch and fan currently, with my Koyo race rad, it was like 1/4" from the fan. I slotted my motor mount brackets to slide the engine back as far as I could and ended up with about 3/8-1/2" between. I had wheel hop at SILV on the track and it caused the fan to clip the rad and take out my 2 week old $400 rad :(. It may work with the stock thickness rad. Apperently the SC clutch is thinner and the mk4 n/a fan sits closer to the engine. It makes it quite close to the water neck, but it works. I should have the parts here in a week or so, so I will see how it works.

Thanks for the info, I'm still trying to get a measurement on the SC clutch... both my local parts stores have no stock on them right now. Is the fan on the NA MK4 different from a SC?

When u get your setup, I'd love some measurements if you have the time...


On my setup I used a.

1)3000cfm Perma cool Efan its the 16" one with only a 10 amp draw. It fits inside the factory JZA70 fan shroud perfect. but you need to build standoffs to go between the bracket of the E-fan & the radiator it sits to close to the radiator.

2)Permacool 10 amp safe switch switches on at 165deg so you dont need to add a Relay a bonus there you cant run spals w/o a relay they draw a lot of amps.

3)Koyo 55mm thick race radiator.

4)TRD 2JZGTE thermastat.

The spacing between the Efan & engine parts is safe ~1" at closest parts.

I run this setup in CA summer days and keep Really Cool.

Thanks for the input, but I'm trying to get rid of my e-fans. The setup I have works fine, I just would prefer a fan/clutch setup, if I can fit it.


On a side note... I measured my 02 5vz 4runner and the whole setup is only a hair over 3 inches, but the bolt pattern is too small. I may go this route if I can safely modify the bolt holes (open them up to a cross?). I have to remove it and make sure the pulley bolt fits inside the center first.

I know someone has a SC fan clutch hanging out in the garage whom could measure for me and save me some driving round town.... anyone?

[becauseican]

The 7M and 90 ish toyota truck fans are also interchangable, I had a 7m Supra fan/ clutch on my 92 V6 p/u. But yes the bolt pattern is too small for the JZ pulley.

[fstlane88]

Any updates on the new setup Randy?

[becauseican]

Yup, I got the SC clutch and the mk4 n/a fan here on my desk, combined it is 3.75" to the farthest tip of the fan blade. The clutch itself is approx 2 7/8" from the watepump flange to the mounting face for the fan blade, the clutch apppears to be the same as the GTE clutch, but without the GTE one off my car to measure it I cant say exactly. The GE fan blade looks to be about 1/2 -5/8" closer to the engine than the 2jzgte blade, but the GTE setup is still bolted onto the car and hard to measure. But it looks like the either clutch with the n/a blade will fit with about 3/4"- 1" between the fan and Koyoa Race Al rad, the core clearence is not really the problem, its the end tanks, now I have about 1/4" between the blade and the upper tank, with the GE blade it will be 3/4"-1" away.

[Turbo Drifter]

I would think 1" is still going to be the bare minimum you would want that fan to be from the rad. 1.5" would be great! Would give you lots of room for the unknown.

Any one have any idea how much room there is from the fan on a 7M to the rad? Would be a good template to go by.

Jeremy

[c_ronius]

Yup, I got the SC clutch and the mk4 n/a fan here on my desk, combined it is 3.75" to the farthest tip of the fan blade. The clutch itself is approx 2 7/8" from the watepump flange to the mounting face for the fan blade, the clutch apppears to be the same as the GTE clutch, but without the GTE one off my car to measure it I cant say exactly. The GE fan blade looks to be about 1/2 -5/8" closer to the engine than the 2jzgte blade, but the GTE setup is still bolted onto the car and hard to measure. But it looks like the either clutch with the n/a blade will fit with about 3/4"- 1" between the fan and Koyoa Race Al rad, the core clearence is not really the problem, its the end tanks, now I have about 1/4" between the blade and the upper tank, with the GE blade it will be 3/4"-1" away.

Thanks alot man, I appreciate the effort on getting me the measurements!

Still hunting around, but I'm leaning toward the 02 4runner 5vz fan/clutch as it's only ~3" front of fan to clutch flange, just have to modify the mounting holes to fit JZ pulley.

I'm hoping it will move enough air, at the proper rpms... There is another thread going right now about different clutches for the 7M, and it brought to my attention that there could be significantly different behaviors in the different clutches... I'll have about 2k more rpms out of the 1JZ vs the 5VZ, So maybe a bad idea... Still doing homework, not ready to get this done till next month earliest. :(

Remember, my particular situation does not involve a Supra, but any thoughts on this would be appreciated.

Again, Thanks.
Nick.

[becauseican]

Maybe try a LS400 clutch , I think you may be able to bolt a 7M blade on the clutch. BTW the SC300 clutch and mk4 N/A fan only work on the 1jz, the 2jz has a different waterneck which sticks out farther than the 1jz one. With the 1jz there is only about 1/4"-3/8" between the blades and the water neck (SC and N/A combo). So Nick, I think this is the thinnest combo that you can get on a JZ, what car is it in?

[c_ronius]

It's a 1J in a 4Runner... Hadn't thought about the water neck being in the way, that could very well ruin my 5vz fan plan. :( The 3.75" for the combo you have is still a little too thick for me, unless I buy a thinner radiator or get rid of the AC, which I'd rather not do. 3.5 is the max I can go with the space I have to work with.

Haven't had work for weeks, so the truck is on the back burner for now. I'll update in the next few weeks if I find a thinner combo that works... Just in case anyone else is looking for a thinner fan setup as well.

[becauseican]

I think in your case you will have to move the rad farther forward. I just put a 1jz into a 89 2wd truck and we had to cut the rad support and move the rad (custom 3 core AL rad) we ended up using a pusher electric fan. But for offroading I wouldnt trust an E fan.

[c_ronius]

Yeah I already cut out the stock radiator support and made a new bolt on part around a custom radiator. The radiator is a 3" core, but with the e-fans/ shroud it was almost 8" thick, it literally came through the grille. I had to get the truck on the road at the time, and I mounted it in a rather ridiculous fashion to get it running... but I want to fix all that now.

The e-fans(spal) were too loud, I was thinking about those thin flexalite fans, but managed tomove my motor back almost 1.5" and now I hope I can squeeze a clutch/fan combo. I've got to redo the mounting for the radiator/condenser to fit inside the factory grille, then I'll know the exact amount of space I've got left for the fan(s). From measurement I should have about 4" to play with, but I'll have to see how it ends up before I can make a final decision on fan.

Anyways, thanks for the input.

[becauseican]

Post some pics of your setup, what year 4runner, 4wd?

[Dylan JZ]

Maybe try a LS400 clutch , I think you may be able to bolt a 7M blade on the clutch. BTW the SC300 clutch and mk4 N/A fan only work on the 1jz, the 2jz has a different waterneck which sticks out farther than the 1jz one. With the 1jz there is only about 1/4"-3/8" between the blades and the water neck (SC and N/A combo). So Nick, I think this is the thinnest combo that you can get on a JZ, what car is it in?

yeah, IIRC Aaron said one of the LS400 clutches with a 7m blade was the thinnest combo when I was looking into options for my 1J. I could be wrong though, or perhaps I misunderstood but thats what I remember.

[c_ronius]

Post some pics of your setup, what year 4runner, 4wd?

I've got no current pics, but there's a (very crappy) website listed in my profile. That's all from about a year ago when I got it running, lots of changes now, will try and get some current pics up soon. 4wd in the respect that the t-case is in, but I need to re-gear the front differential before I can use it... one day...

[bigaaron]

That set up did not work well at all for BIC, he ended up with a big hole in his Koyo rad at the drag strip. This happend in Vegas and he is now getting the parts he listed above to solve this issue.

Again a MKIV TT clutch & fan with Aluminum rad will not work, its just too clouse.

Jeremy

He had the wrong fan iirc, we use the mk4 ge fan, and a SC300 clutch. We've used our setup on lots of cars, including my own Supra, with no issues.

The new setup we have that gives more clearance is a LS400 clutch with 7m fan. We have the LS400 clutch in stock for $140 brand new. We include washers to make a perfect fit of the clutch to the pump.