Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 27 minutes ago, banzai510(hainz) said: maybe yougot confused were to put in 1 tooth in the opposite direction? Anything is possible.... It seems like I indexed 1 side 2 spines and the other only 1... I manage to raise the ride height to where I want it and still have room to adjust.... I do still need to balance out the adjusters but for now I need to drive it on Wednesday so I left it alone.... I have some new control arm bushings on order too so I'll have to release the torsion bar tension to do that any how so I'll be resetting it again either way.... 1 Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 9 minutes ago, datzenmike said: Maybe the truck sits level but one arm is doing more work than the other? Possible..... I kind of wish I had the money now to get the front coilovers ... i have the conversion brackets coming soon but I dont think I'll be getting that accomplished till next year.... 1 Quote Link to comment
Charlie69 Posted January 13, 2020 Report Share Posted January 13, 2020 What are you implying Mike? 1 Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 I do have a quick question.... Unfortunately I have to pull my damn heater core again..... I fixed a leaking end cap a while a few months back and now it seems I have a tiny leak on the opposite side.... it burns off as I drive but I notice a little coolant pooled up in the heat box lid yesterday.... I thought I was buying another one... had the core with the valve and the fan.... unfortunately the seller never sent it , never responded to me or anything... it's been almost a month... I have a claim in with Ebay now for a refund...... Probably gonna try placing a ratsun ad for one.... Any how my question..... Has anyone ever figured out a replacement fan unit? Or even just the plastic fan part? Mine works electronically but has some plastic pieces missing so it vibrates a bit more than it should.... 1 Quote Link to comment
DanielC Posted January 13, 2020 Report Share Posted January 13, 2020 Remember the plastic is well, in your case, 48 years old. The plastic is very fragile. It is very difficult to loosen the nut that holds the squirrel cage on the motor shaft. I do have a few extra heater parts. Give me time to see what I have. 1 Quote Link to comment
datzenmike Posted January 13, 2020 Report Share Posted January 13, 2020 1 hour ago, Charlie69 said: What are you implying Mike? That the sway bar resists individual wheel movement and will transmit some of the lifting force to the opposite side. Probably the spline was set wrong but have you tried evening the adjusters and see it the ride is still level? 1 Quote Link to comment
Charlie69 Posted January 13, 2020 Report Share Posted January 13, 2020 On my 521 years ago it did not have the sway bar so this was not a problem on mine but could be a problem on Crashtd420's truck. Good point. Quote Link to comment
Charlie69 Posted January 13, 2020 Report Share Posted January 13, 2020 I will look today for 521 heaters and parts for you. 1 Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 (edited) Keep in mind that there are 3 different types of motors I have seen and they do not all have the same mounts, my 71 has the flat platter type where the brushes rest on a disc like a record player, so just because it fits a 521 don't mean it will fit your 521. Edited January 13, 2020 by wayno 2 Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 21 minutes ago, DanielC said: Remember the plastic is well, in your case, 48 years old. The plastic is very fragile. It is very difficult to loosen the nut that holds the squirrel cage on the motor shaft. I do have a few extra heater parts. Give me time to see what I have. I appreciate you looking.... That's why I'm afraid to touch the bird cage.... its already trying to fall apart.... 1 Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 1 minute ago, wayno said: Keep in mind that there are 3 different types of motors I have seen and they do not all have the same mounts, my 71 has the flat platter type where the brushes rest on a disc like a record player, so just because it fits a 521 don't mean it will fit your 521. Ok that's good to know... 1 Quote Link to comment
Charlie69 Posted January 13, 2020 Report Share Posted January 13, 2020 I will post pictures of what I find if any for you to compare with yours. 1 Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 24 minutes ago, datzenmike said: That the sway bar resists individual wheel movement and will transmit some of the lifting force to the opposite side. Probably the spline was set wrong but have you tried evening the adjusters and see it the ride is still level? I did set the adjusters level at first and the truck was not level.... Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 Just now, Charlie69 said: I will post pictures of what I find if any for you to compare with yours. I think I have some pics for reference, I'll have to pull it out after Wednesday... I'll need the heat that day.... Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 5 minutes ago, wayno said: Keep in mind that there are 3 different types of motors I have seen and they do not all have the same mounts, my 71 has the flat platter type where the brushes rest on a disc like a record player, so just because it fits a 521 don't mean it will fit your 521. Are there any differences with the heater cores to watch out for or are all the 520/521 cores the same? Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 (edited) OK, here are the differences, I don't have a box with the wide mount pattern or at least I don't want to pull them apart to find out. Here is the platter type motor, see how it doesn't stick out the hole. Here is the more traditional motor type, it does stick out the hole in the heater box. And here is one of the motors that is huge and is larger round, it sticks out the heater box almost all the way to the firewall, the mounts are way farther apart, I don't have a box for it anymore or it is in one of my trucks and I kept the motor/cage as a back up. I suppose this last motor could be for a 720 but I don't think it is, the cage is the same as a 521 cage, as I recall the mounts in the heater box were different, it had legs, it's been so long now memories are fading away, these parts were squirreled away years ago if not decades when 521 trucks could still be found in wrecking yards. Edited January 13, 2020 by wayno Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 I believe all the 521 cores are the same, early 620 cores may also work, I don't recall anymore as it has been years/a decade since I have had to deal with heater boxes. 21 minutes ago, Crashtd420 said: Are there any differences with the heater cores to watch out for or are all the 520/521 cores the same? Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 11 minutes ago, wayno said: I believe all the 521 cores are the same, early 620 cores may also work, I don't recall anymore as it has been years/a decade since I have had to deal with heater boxes. Maybe early like 72 or 73 620, but all the 620 heater cores I have personally seen seem to be different.... Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 I said they may work, the heater box appears to be the same as I recall looking at them, it's just been too long ago for me to remember for sure anymore. 1 Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 19 minutes ago, wayno said: OK, here are the differences, I don't have a box with the wide mount pattern or at least I don't want to pull them apart to find out. Here is the platter type motor, see how it doesn't stick out the hole. Here is the more traditional motor type, it does stick out the hole in the heater box. And here is one of the motors that is huge and is larger round, it sticks out the heater box almost all the way to the firewall, the mounts are way farther apart, I don't have a box for it anymore or it is in one of my trucks and I kept the motor/cage as a back up. I suppose this last motor could be for a 720 but I don't think it is, the cage is the same as a 521 cage, as I recall the mounts in the heater box were different, it had legs, it's been so long now memories are fading away, these parts were squirreled away years ago if not decades when 521 trucks could still be found in wrecking yards. Pretty sure what I have is like the first 2 pics... So a 720 bird cage is the same? My fan motor works fine so if i could 720 blower motor I could just use the bird cage and fix mine.. Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 Damn just read where you said not sure if the last one was a 720 fan motor... But the cage was the same..... I'll have to find some pics for comparison.... Thanks.... Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 Ok looks like that last one is from a 620.... Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 The cage is sorta the same, it's the same size and it mounts the same, but that one has more fins and they are smaller fins, I don't have a 720 heater box loose to compare that motor to, but I do remember that there were at least 3 different types of 521 heater boxes/motors, and I only have photos of 2 different heater boxes. I do not recall ever removing a 620 heater box from a 620, so how I would end up with a 620 motor/cage I can only guess, more than likely I parted out a 1972 Datsun 521 that had that box/motor in it, but this is a guess, I cannot remember for sure. Quote Link to comment
Crashtd420 Posted January 13, 2020 Author Report Share Posted January 13, 2020 13 minutes ago, wayno said: The cage is sorta the same, it's the same size and it mounts the same, but that one has more fins and they are smaller fins, I don't have a 720 heater box loose to compare that motor to, but I do remember that there were at least 3 different types of 521 heater boxes/motors, and I only have photos of 2 different heater boxes. I do not recall ever removing a 620 heater box from a 620, so how I would end up with a 620 motor/cage I can only guess, more than likely I parted out a 1972 Datsun 521 that had that box/motor in it, but this is a guess, I cannot remember for sure. I tried looking up 720 blower motors and they definitely look different.... Regardless of where yours came from it seems like an option for me..... Was the cage still plastic? Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 Just hang on, I am pulling apart a box and taking photos Quote Link to comment
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