Jump to content


Photo

Overheating Dilemmas '79 210


  • Please log in to reply
15 replies to this topic

#1 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 15 September 2014 - 07:55 AM

Recently, I bought a barely used radiator from a guy on Ratsun. Waaaaaay better shape than the one I had. Fixed the leaking problems, but she still overheats!

It is bigger than the one that came out of my car, I wonder what car it came from?

 

Funny thing is, since it is a larger radiator, it should keep my car cooler. . . . . right? Aaaaannd it really only gets to that overheating point on the freeway. Also, once it starts to run hot it continues to do so until the engine is turned off and cools down for several minutes to an hour.

 

Like.... what the fuck? hahaha. no airways are restricted by a bag etc., coolant is 50/50 premixed. . . i've replaced the cap, thermostat, water pump.... shit, even the coolant reservoir. Even removed the thermostat altogether, which helped, but still. . . when i get on the freeway, it'll steaily climb to almost H. I didnt replace the hoses, could they be collapsing at high RPM's? Like, that is very literally the only cooling system related thing that I haven't bought new.

 

And I bought my behbeh for $250, it had sat there in this lady's driveway for almost 8 YEARS. There were rodents living in it at some point, so is it at all possible that they could have got into the tail pipe, creating backpressure or some shit?

 

Fuuuuuuuuuuuuuck...... I'm stumped.

Any help will be immensely appreciated

 

plz respond to this post, or my email. . .

chrismoore1987841@yahoo.com

 



#2 Eagle_Adam

Eagle_Adam

    Datsunahaulic

  • Banned
  • PipPipPipPipPipPipPipPipPipPip
  • 10,386 posts
  • Location:Beaverton, Or
  • Cars:1978 620 KC KA DD 76 610 coupe project Jessi's 77 710 wagon DD

Posted 15 September 2014 - 08:32 AM

When's the last time you changed the thermostat
Chuck it in the Fuck it bucket, cus I'm done

#3 hobospyder

hobospyder

    El Matador

  • Senior Member
  • PipPipPipPipPip
  • 8,504 posts
  • Location:sedro woolley, wa
  • Cars:73 620, 77 620kc, 02 300m, 96 s10

Posted 15 September 2014 - 09:34 AM

said he removed the thermostat so constantly open system.

 

burp it and see what happens?

 

and then replace hoses. i do things the expensive way though


Lol you really think he would tell anyone, ahh yes Mr. Peterson I was taken a piss and everything got dark like there was an eclipse, when I look back to see what was making the shade when WHAM!! Cock hit me right in the face. I don't know whose it was but we could match up the bruise.

 

 

 

you assume i have any fucks

 

 

 

 

 


#4 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 15 September 2014 - 09:53 AM

I can sure try to burp them whenever I get back to work, but I already did that whenever I replaced the fluid. I flushed it real good too. For about an hour.
Is it possible that since the radiator Is bigger than my old one that the hole in the front of the car is too small, also restricting air flow?

#5 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 15 September 2014 - 09:55 AM

Can't remember what it is called right now, radiator support bracket....?

#6 kelowg

kelowg

    Hall Monitor

  • Senior Member
  • PipPipPipPip
  • 1,037 posts
  • Location:modesto ca
  • Cars:70 521

Posted 15 September 2014 - 12:10 PM

Do u have a fan clutch fan or just fan blade, clutches can cause issues. Ign timing correct? Plugged up cat converter. Having no tstat could at higher rpms move water too fast thru rad. Pretty rare tho



#7 kelowg

kelowg

    Hall Monitor

  • Senior Member
  • PipPipPipPip
  • 1,037 posts
  • Location:modesto ca
  • Cars:70 521

Posted 15 September 2014 - 12:10 PM

Water pump impeller rusted away?



#8 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 71,695 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 15 September 2014 - 05:14 PM

Watch the lower rad hose and rev the shit out of it. Does the hose collapse under pump suction? If so you may need a new one with a wire coil inside to prevent this from happening.

 

 

Any chance the belt is loose? Slipping would reduce water pump output but I think it would have to be a lot to over heat..

 

Clutch fans don't do much at highway speeds in fact you could remove the blades and the vehicle speed would push more than enough air through the rad. A failed (loose) clutch fan is not good in stop and go or waiting at the light.

 

I've heard it said that having the thermostat out moves the water too fast through the rad to cool it. If anything I think it would cool more. It's six of one, or half dozen of the other. Slower flow and less water is cooled more or huge flow and lots of water is cooled a lesser amount. Think about it. The hotter something is the quicker heat radiates away into a cool environment. When the temp difference is only a few degrees the change is much more gradual. Now the hot rushing rad water is HOT with lots of cool air. The slowly moving water is cooled much more but it becomes harder to extract the heat that is left.  


Posted Image

#9 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 15 September 2014 - 06:01 PM

I will look into it, P.S. everyone.... I failed to mention I upgraded to an electric fan

 

be right back to elaborate



#10 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 15 September 2014 - 06:57 PM

DatzenMike, the thermostat (or lack thereof) definitely does seem like a factor. I never really thought of it that way. That, coupled with the likely collapsing radiator hose, is creating the situation I am in.

 

At first, removing the thermostat considerably helped my overheating problem (so I thought). I work about five miles from my house, so I didn't notice till point "C" would be thrown in there and sure as hit, it'd overheat.

 

Also, the car doesn't cool down at all until after I turn my car off and pressure decreases (since water pump turbine isn't rotating)

Which MAAAAAYBE means the hose could very well still be collapsed even though I'm parked but car is still running (since the pump is keeping the pressure consistent)?

 

Well, fuck yeah! I am going to try this tomorrow, and see what happens.

 

P.S. Datzen Mike you are goddamn right

hahah



#11 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 71,695 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 15 September 2014 - 08:28 PM

Well you could squeeze the hose to check for softness. Compare to the top one.

 

Another thing is that rad may be part plugged up. May be larger and cleaner on the outside but who knows on the inside? The pump has to suck harder and harder to pull water through it and the hose will collapse. Only does this when revved up.


Posted Image

#12 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 16 September 2014 - 10:19 PM

It is softer, specifically in two areas (that's what she said)
-the part immediately after the radiator
-the longest part before it hooks left into the engine

This Thursday, I'm picking up an upper and lower hose. . .
but you had mentioned something about a wire coil to prevent hose
collapsing... This did not come with one. Should that be an issue?

#13 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 16 September 2014 - 10:37 PM

Also, how do I go about getting a wire coil? Allegedly AutoZone does not carry it. Or... should I just hold off until I can gather enough cash to get an aluminum radiator, and then purchasing the good shit with wires in them?

#14 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 22 September 2014 - 05:48 PM

OoooooooKay. . . . . . Work has been immensely hectic this week, sorry I have not had the time to post

. . . till now. Er-hem, anyways, so I also had a few other problems (alternator & battery took a crap) but

that shit is taken care of.

 

P.S. replaced hoses, still overheated. ***MANNNN FUUUUCK***

 

SO

 

I began to study the good ol' Haynes manual, my old air cleaner, the air cleaner for my Weber DGV (32/36).

As much as I wanted to keep all the emissions from the Hitachi setup, alas I could not, for the EGR valve was too

large. So i proceeded to hump Mother Earth instead, capping off/ "deleting" any emissions port I could so the

vacuum would be up to par (yet no tools to verify if it really was par haha)

anyways

There is a device on the old air cleaner called an "idle compensator" that is not on the Weber air cleaner. Acc. to

Haynes, it is a "thermostatic valve located in the air cleaner to compensate for over-rich mixture when under bonnet (hood) temperature is very high. The valve opens under temperature conditions of 140 to 167 degrees Farenheit." Did some drilling on the TOP of the air cleaner, and put that shit in.

 

Voila. HAS NOT OVERHEATED SINCE. It was 94 degrees out today in this pit (Fort Worth, TX), a day I would get close to  overheating in a matter of minutes. But I didn't even have to use the electric fan till after sitting at a few stoplights. By then,

I was almost home anyways.

 

FUCKING YES. . . . and as a consolation prize: I have replaced every cooling system part in the B310. Which probably needed to happen eventually anyways.

 

Thanks to everyone who helped,

 

Such a tiny part, such a immense impact on the engine.

 



#15 Leebert2176

Leebert2176

    Newbie

  • New Members
  • Pip
  • 20 posts
  • Location:Fort Worth, TX
  • Cars:1979 Datsun 210 hatchback

Posted 23 September 2014 - 05:49 PM

Now that my mind is at ease, I feel like I can really start to enjoy my Datsun the way I've wanted to

since I bought her.



#16 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 71,695 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 23 September 2014 - 06:23 PM

Odd that leaning the high speed mixture cooled the engine.


Posted Image