wayno Posted January 13, 2020 Report Share Posted January 13, 2020 I think this is an early 521 box as it only has one set of mounts in there, but I really do not know what year this box is out of. Here is the kind of box I have in my 1971 as it has the pancake type motor, see where I pulled back the foam to show you the other type mounts with the smaller pattern, see how it has the larger mount pattern outside of the foam ring. Here are the 2 motors side by side, pancake type on the right and the large motor on the left, they have the same mount pattern(105mm), the larger motor will likely fit in the hole but I cannot get the wires for the larger motor past the hole the motor slides into. You can see in the photo below that the cages are the same size but the fin count/fins are different. That loose motor was likely from a 1972 Datsun 521 but you will have to take yours out and see what type of motor you have. 2 Quote Link to comment
wayno Posted January 13, 2020 Report Share Posted January 13, 2020 By the way that large motor is way stronger than the pancake motor, that is likely why I saved it. 1 Quote Link to comment
DanielC Posted January 14, 2020 Report Share Posted January 14, 2020 i did a quick look at my extra heater parts. I have two types of motors, some with good fans. I need to test them before I let them go. Probably the best way to ship the motor and fan is to just put it in a 521 heater, and put the cover plate on the heater. Thursday I have time to test the motors. 1 Quote Link to comment
Charlie69 Posted January 14, 2020 Report Share Posted January 14, 2020 This is what I found so far in my garage. Wire colors are: Yellow Red YR Yellow Blue YL Yellow Black YB 2 Quote Link to comment
wayno Posted January 14, 2020 Report Share Posted January 14, 2020 So is that your 1966 Datsun 520 heater box Charlie? 1 Quote Link to comment
Crashtd420 Posted January 14, 2020 Author Report Share Posted January 14, 2020 1 minute ago, wayno said: So is that your 1966 Datsun 520 heater box Charlie? That's what I was thinking a 520 box.... Seems slight different from what I have.... but I think I could make things work... 1 Quote Link to comment
wayno Posted January 14, 2020 Report Share Posted January 14, 2020 The reason I asked is because I believe he put a 720 heater box assembly in his 520, it also appears to have the small motor, I have one that looks just like that and it may have come out of my 1966 Datsun 520. 1 Quote Link to comment
Crashtd420 Posted January 15, 2020 Author Report Share Posted January 15, 2020 2 minutes ago, wayno said: The reason I asked is because I believe he put a 720 heater box assembly in his 520, it also appears to have the small motor, I have one that looks just like that and it may have come out of my 1966 Datsun 520. 3 minutes ago, wayno said: The reason I asked is because I believe he put a 720 heater box assembly in his 520, it also appears to have the small motor, I have one that looks just like that and it may have come out of my 1966 Datsun 520. Sounds about right.... So will these parts work in my 72? I still want to pull mine out of the truck this weekend before I commit to buying something.... 1 Quote Link to comment
wayno Posted January 15, 2020 Report Share Posted January 15, 2020 You need to pull your heater box out before you start buying anything as you need to know what you have first. So what are these parts you mentioned for your 72, that motor you posted a photo of on the last page??? 1 minute ago, Crashtd420 said: Sounds about right.... So will these parts work in my 72? I still want to pull mine out of the truck this weekend before I commit to buying something.... 1 Quote Link to comment
Crashtd420 Posted January 15, 2020 Author Report Share Posted January 15, 2020 I was referring to the heater box that Charlie posted up.... I believe he might sell that whole thing to me.... 1 Quote Link to comment
wayno Posted January 15, 2020 Report Share Posted January 15, 2020 What is wrong with your heater box? 1 Quote Link to comment
Crashtd420 Posted January 15, 2020 Author Report Share Posted January 15, 2020 Box is good.... Heater core has an extremely tiny leak, and no on/off valve.... but I have an on/off valve under the hood so that doesnt really matter.... The fan has a broken section.... Mostly I was trying to find a replacement for the birdcage but if I got a spare heater core and motor then that's fine too..... 1 Quote Link to comment
Charlie69 Posted January 15, 2020 Report Share Posted January 15, 2020 1 hour ago, wayno said: So is that your 1966 Datsun 520 heater box Charlie? Not sure Wayne where it came from, I have had many over the years. Quote Link to comment
Charlie69 Posted January 15, 2020 Report Share Posted January 15, 2020 Daniel might have something also. Do not count him out he said he would have time on Thursday. Wayne is correct I put a 720 heater and AC in my 520. Big hammer, torch, welder, & imagination any thing will fit! LOL 1 Quote Link to comment
Crashtd420 Posted January 15, 2020 Author Report Share Posted January 15, 2020 I don't think my datsun has ever been out of the garage in January up here mass .... so far twice in one week.... 36 degrees out this morning... Luckily the amount of heat I get from the heater was just enough .... Quote Link to comment
DanielC Posted January 15, 2020 Report Share Posted January 15, 2020 Do this. By the way, L-16 radiator, L-20-b engine. 1 Quote Link to comment
d.p Posted January 15, 2020 Report Share Posted January 15, 2020 Ugh that wing. 1 Quote Link to comment
Crashtd420 Posted January 17, 2020 Author Report Share Posted January 17, 2020 On 1/15/2020 at 10:47 AM, d.p said: Ugh that wing. Still going on about that.... Atleast your not still complaining about that stack too.... 1 Quote Link to comment
Crashtd420 Posted January 17, 2020 Author Report Share Posted January 17, 2020 So the other day I reset my ride height.... because I was going back up I need to add a couple shims to my camber..... Does any one know what grade bolt is used to hold the upper control arm to the frame? I know they are a 7/16-20 but locally I can only find them in grade 5..... I was thinking I should use grade 8 but I couldnt find anything online that didnt contradict its self.... 1 Quote Link to comment
mainer311 Posted January 17, 2020 Report Share Posted January 17, 2020 (edited) What do you mean contradict itself? Use boltdepot.com. I love them. They're right down in Hingham, and you'll have the bolts within 2 days. Use USPS economy shipping. Since shipping is relatively high (compared to the price of a few bolts), add a bunch of other "spares" of commonly used threads/lengths. https://www.boltdepot.com/Hex_bolts_Zinc_plated_grade_8_steel_yellow_7_16-20.aspx Edited January 17, 2020 by mainer311 1 Quote Link to comment
Crashtd420 Posted January 17, 2020 Author Report Share Posted January 17, 2020 4 minutes ago, mainer311 said: What do you mean contradict itself? I was basically looking up bolt grade vs strength.... 1 Quote Link to comment
mainer311 Posted January 17, 2020 Report Share Posted January 17, 2020 (edited) That's a myth. Tensile strength is higher in a grade 8 vs. a grade 5, yes. And yes, the grade 5 will have a higher elongation before fracture, and I think that's where people get the myth that a grade 5 is better than a grade 8. If you have suspension components that are moving because a grade 5 is stretching, then you probably should have used a grade 8. See my point? There is no application out there where someone should choose to use a weaker bolt because they want the built-in stretch. Edited January 17, 2020 by mainer311 2 Quote Link to comment
Crashtd420 Posted January 17, 2020 Author Report Share Posted January 17, 2020 2 minutes ago, mainer311 said: That's a myth. Tensile strength is higher in a grade 8 vs. a grade 5, yes. And yes, the grade 5 will have a higher elongation before fracture, and I think that's where people get the myth that a grade 5 is better than a grade 8. If you have suspension components that are moving because a grade 5 is stretching, then you probably should have used a grade 8. See my point? There is no application out there where someone should use a bolt weaker bolt because they wan't the built-in stretch. Sounds good enough to me..... I used the grade 5 just so I could drive it the other day, but I have been questioning my choice the whole time...... And thanks for that link... I'll get some grade 8s ordered up today..... Quote Link to comment
mainer311 Posted January 17, 2020 Report Share Posted January 17, 2020 (edited) To be honest, grade 5 is probably okay, and I feel like that's what a lot of these vehicles came with from the factory, but the cost delta is so little between the two, that I usually just replace them with 8's anyway. It's cheap peace of mind. Edited January 17, 2020 by mainer311 1 Quote Link to comment
Crashtd420 Posted January 17, 2020 Author Report Share Posted January 17, 2020 7 minutes ago, mainer311 said: To be honest, grade 5 is probably okay, and I feel like that's what a lot of these vehicles came with from the factory, but the cost delta is so little between the two, that I usually just replace them with 8's anyway. It's cheap peace of mind. Yes I agree... Quote Link to comment
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