Help Me Please!!!

[madmann29]

Hi, i have an 87 supra turbo and the fan in the engine and shrowd that covers it broke and they it started over heating and smoking. So i'm pretty sure all i need to do it replace the fan and shrowd, so does anyone know where i can just get a stock one, will a toyota dealership still have it, and also how hard would it be to fix it myself? I need help please

Thanks
Matt

[repinS]

I hope the shroud is part of your overheating issues - it's an important part of the fan's functioning.

... I just hope that it wasn't the icing on the BHG cake.

[ahmedootie]

u can find tha fan and shrowd at your local junk yard..or tha beloved ebay if ur an ebay amateur lemme kno and i'll waste my time and help u find wut ur lookin for
peace

[madmann29]

ok cool thanks, i can find it on ebay myself too but thanks for the offer anyway

[mrnickleye]

Why...I took that Nasty ole 'power robbing' fan, shroud, and clutch right off my car and chucked it right in the trash!!! I put on a 14" high volume electric fan. I run it full time. I wired in a manual over-ride switch for the 2 small AC electric fans for when it gets hot (here in the Mojave desert), when I'm not running the A/C. Also, get a small add-on transmission cooler if you have an automatic. Run the oil thru it before the radiator to take some of the heat away from the coolant.

[Jeeves]

There's not been an electric fan used that I've seen that matched the flow of the Stock Clutch fan. I live in NM and there's not a single electric fan user here for a very good reason.

[HKS1991]

Originally Posted by Jeeves

There's not been an electric fan used that I've seen that matched the flow of the Stock Clutch fan. I live in NM and there's not a single electric fan user here for a very good reason.

I own the 91 we talked about uprading headers, wastegate, and what not. I have a cracked shroud as well and I thought of replacing it with a set of slim electrics too. So your telling me that twin electrics cannot out do the stock CF?

[HKS1991]

Originally Posted by madmann29

Hi, i have an 87 supra turbo and the fan in the engine and shrowd that covers it broke and they it started over heating and smoking. So i'm pretty sure all i need to do it replace the fan and shrowd, so does anyone know where i can just get a stock one, will a toyota dealership still have it, and also how hard would it be to fix it myself? I need help please

Thanks
Matt

I bought a 91 7mgte w/ 110K miles. Before I bought it I checked compression, fluids, boost, etc. Literally I drove it 30 miles in about 2 weeks. I noticed that the secondary fan would turn on shortly after it would warm up. This was a little disconcerning. Well I changed the thermastat, flushed and burped the system than I drove about 10 miles, parked to run an errand fired it back up; it popped, died and pure white smoke filled the parking lot. #6 cylinder blew through! All i can reccommend is finding specs on the stock fans CFM (cubic feet pure minute) and completely replacing it with equivilent electric ones, or replacing stock components. Either or could be more costly it is a matter of labor and enginerring.

[bgrieger]

There has not been a single case where anyone has found an aftermarket fan that will out perform the clutch version. Anyone who has said they have one has never been roadracing, or lived in the area between Phoenix, Los Vegas and Jeeves neck of the woods.

Even the gains from parasitic drag reduction are lost as soon as the alternator has to put out more juice when the electrics come on. The more you draw, the harder an alternator is to turn and hence the drag on the motor. The energy used to turn it is converted to electricity, and powers the fans...actually, it should be worse than stock losses when the fans are on, as there are always efficiency losses when converting energy, though it is possible that if the stock clutch doesn't lock up, it may suffer efficiency losses as well. Alternators are only roughly 70% efficient as I read once, and the electric motors/wiring lose more again to heat. Anyhow, that's theoretical at the moment as I don't think anyone has the facts on them. Needless to say, if you gain power while the fans are on, you aren't pushing all that much air.

Now, it is possible that the lack of a/the original shroud is part of the reason why the electrics cannot keep up, as even the stock fan will not without a shroud. However, most people swap to replace a broken shroud anyhow...

[Jeeves]

The shroud has proven to be a VERY important piece in the cooling system of the Supra. Think "Path of least resistance". Is it easier to go around the radiator, or through it. Without the fan shroud there "around" is how it ends up going and that decreases cooling efficency.

Without a shroud, heating issues can become blindingly appearant. However, I pondered electric fans once. Did the research and decided to keep w/the clutch fan. The only reason I can see losing it now, is to free up engine bay space.

[repinS]

Apparently a good upgrade (on the Cressida, anyway) is to use a fan clutch from a V6 Toyota Tundra. Bolts up, and truer and better engagement.

Another mod is to replace your fan clutch with one from a 2003 Toyota Tundra V6. It has more positive engagement than your probably slipping original fan clutch and even a new original fan clutch.

Don't quote me on this however, I just read it here

[Jeeves]

I'd heard about that, never tried it.

[bgrieger]

The truck clutch idea goes back a lot of years, but I've never seen anything showing it works better...I also remember there was a site that had the rebuild procedures for our clutches too that was a simple set of steps to put it all back in working order...