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I have a 91 Z28 w/TPI 305 “STOCK”. Looking for a cooling system upgrade, radiator, fans, etc. Since I live in Tokyo, and completely dependent on online ordering, I need solid recommendations, tried and proven, as to avoid mis fitting parts, shopping and waiting. I’m third owner on this cherry Z, never broken into other than a R34 upgrade when 2nd owner brought her over to Japan (military). When the odometer stopped 3 yrs ago (hasn’t been a priority to fix), she had just shy of 38k. Temp runs at consistent 220, however past couple days started edging over but not in red, got to check secondary fan, primary kicks on and brings her back to 220, sitting static at idle. Anyone know the temps fans kick on?. Thanks for your time and appreciate the recommendations.
You can use Rock Auto, Summit, Jegs for online purchasing, though some of you shipping will be high.
As far as your fans go, your secondary should come on with your AC. And when the temp reaches around 235ish, the secondary will kick on. Check your air dam under front. Debris between condenser and radiator also.
Sounds like your cooling system is in check. Maybe flush and change the TStat. 185-195*.
Good luck.
I agree with Bob and maybe get a 180 thermostat for it and get a coolant flush. Also check and clean out the debris in the AC condensor and radiator fins, as that causes issues. There may also be a build up of dirt and debris between them that is stopping the air from flowing through them and cooling it as well as it used to.
I'm using dual fans from a 4th gen F body. The fan motors themselves are the same part number as the thirdgen fans, but they're updated and they DO run faster. They are direct plug and play. The fan shroud is more of a tradition shroud, where as the thirdgen really isn't a shroud, but rather just a bracket, lol. It physically fits in the space we have, but it's not a direct bolt it. Took me about an hour with small hand saw.....trim and fit....trim and fit. It was pretty easy. Cooling was significantly improved.
You can use Rock Auto, Summit, Jegs for online purchasing, though some of you shipping will be high.
As far as your fans go, your secondary should come on with your AC. And when the temp reaches around 235ish, the secondary will kick on. Check your air dam under front. Debris between condenser and radiator also.
Sounds like your cooling system is in check. Maybe flush and change the TStat. 185-195*.
Good luck.
LOVE RockAuto have use them religiously over the 4 years I’ve owned her. Thanks for the reply!
I agree with Bob and maybe get a 180 thermostat for it and get a coolant flush. Also check and clean out the debris in the AC condensor and radiator fins, as that causes issues. There may also be a build up of dirt and debris between them that is stopping the air from flowing through them and cooling it as well as it used to.
had flush done last month...have a 180 thermostat and power chip waiting installation. Had a 93 that sucked up a bag between the condenser and radiator once...Will look into the debris right away. Thanks
I'm using dual fans from a 4th gen F body. The fan motors themselves are the same part number as the thirdgen fans, but they're updated and they DO run faster. They are direct plug and play. The fan shroud is more of a tradition shroud, where as the thirdgen really isn't a shroud, but rather just a bracket, lol. It physically fits in the space we have, but it's not a direct bolt it. Took me about an hour with small hand saw.....trim and fit....trim and fit. It was pretty easy. Cooling was significantly improved.
If ya click the link in my sig it'll take you to my Facebook page. Scroll down though the pics. There are only a few, but they're in there. Nothing great for reference really, but if you did decide to do it, I'm happy to help. Just hit me up.
I've got a 160 fan switch and 160 thermostat and a 3 row aluminum radiator and stock dual fans and it barely ever gets about 140 unless i'm idling for a long time on a hot day in traffic, but as soon as i'm moving again it drops back down to the 2nd from bottom line and stays there. I also have an ADS Superchip in my ECM with those settings.
If you plan or already have switched to A/C condenser to r134 then look for a condenser that is compatible with it. It is different design from our stock condenser designed for r12
Last edited by LiquidBlue; 08-31-2018 at 11:00 AM.
Reason: condenser
What does the radiator have to do anything with the refrigerant in the AC system?? For R134a all you have to do is change some O-ring seals and the oil in your AC compressor and the high and low side ports for the gauges. The radiator has nothing to do with anything related to the AC system. The condensor in front of the radiator will work as is as well.
What does the radiator have to do anything with the refrigerant in the AC system?? For R134a all you have to do is change some O-ring seals and the oil in your AC compressor and the high and low side ports for the gauges. The radiator has nothing to do with anything related to the AC system. The condensor in front of the radiator will work as is as well.
You know what, I have no idea what I was thinking! I suck at multitasking - sorry about that. I meant condenser: The condensor change is not required for r134, it will perform, but if he is going to trash original (which I would not recommend unless necessary) and just put any old condenser n, then get one designed for r134. Coolant properties are different from r12, and the new condenser design is more efficient and will make r134 perform better. Its nearby the radiator, that is about as close as reason why I can think of why I said that
:
If you plan or already have switched to A/C refrigerant to r134 then look for a radiator that is compatible with it. It is different design from our stock radiators designed for r12
I assume you are talking about the A/C condensor - NOT the radiator....
LOL. It's Friday! It happens! OK. I can agree with that. He's gone that far and already has the radiator out, it wouldn't hurt to replace that as well as long as he's going to retrofit the AC.
LOL. It's Friday! It happens! OK. I can agree with that. He's gone that far and already has the radiator out, it wouldn't hurt to replace that as well as long as he's going to retrofit the AC.
I'm a purist, and want to keep as much stock as possible or at least period correct. If radiator bad, first thing I'd do is look for a stock replacement, could be hard in Japan!
I've got a 160 fan switch and 160 thermostat and a 3 row aluminum radiator and stock dual fans and it barely ever gets about 140 unless i'm idling for a long time on a hot day in traffic, but as soon as i'm moving again it drops back down to the 2nd from bottom line and stays there. I also have an ADS Superchip in my ECM with those settings.
Been considering upgrading to an aluminum, do you have the p/n manufacturer etc. of radiator you’re using? Like stated...really desperate to get tried and proven setups as to avoid downtime’s over shipping returning etc. THANKS
I'm a purist, and want to keep as much stock as possible or at least period correct. If radiator bad, first thing I'd do is look for a stock replacement, could be hard in Japan!
Was converted to 134 before it came over here by the previous owner. Actually not even using the AC Sys right now...it hasn’t been serviced and alive got it disconnected, (installed but unplugged)
I bought my radiator on eBay and the only issue that I had with it was that I had to take the rubber mounts out for it because it was thicker than the stock 1. I found the email that came from eBay when I purchased it and they’re saying it’s out of stock, but maybe you can contact the seller to see if he has more?? Here’s the link to the part:
I bought my radiator on eBay and the only issue that I had with it was that I had to take the rubber mounts out for it because it was thicker than the stock 1. I found the email that came from eBay when I purchased it and they’re saying it’s out of stock, but maybe you can contact the seller to see if he has more?? Here’s the link to the part:
08-30-2018, 10:04 AM
