The important thing for installing  a flex fan would be to know the correct length of the spacer and the correct diameter.  Auto parts stores are NO help;  they ( their computerized parts systems) only have parts (original or compatible OE replacements) for new cars, not "old" cars, and they don't recommend putting compatible parts on cars, even if you know it will work.  I couldn't get an ignition coil condensor for a 1969 Camaro or 1967 Mustang.  I was told to contact the manufacturer or visit the car dealer.  

Can  you balance the space or the fan?

Edited January 3, 20196 yr by TomoHawk

I have a 1978 280z fan shroud, clutch and fan that I could get rid of after going to electric. PM me if anyone is interested.

Edited January 3, 20196 yr by AlbatrossCafe

I guess ill have to test my car again in a big traffic jam with the ac on and see how it behaves before  spending more money and throwing more devices in the engine bay. No more spending money on useless stuff.

 That's not the style f. fan that I have. Mine has wide blades at the tips. Didn't get a chance to take a look at my old one today. I'll take measurements tomorrow.

Still fighting this issue. Any other advice??

Car has a 160 degree thermostat, original plastic blade fan clutch and champion 3 row radiator. Still struggling with percolation during stop and go traffic in Panama. I have been advised to install electric fans with thermoswitch to tackle this. Will this be the final and concrete solution to my problem?

 Will this be the final and concrete solution to your problem? No one here has a crystal ball as far as know and if they did they'd be looking for that unrusted barn find Z that most of us know is out there somewhere.

 The shrouded fan(s) would seem to be the best solution, IMO, but but there has been some discussion at HybridZ lately about upgrading the alternator when using double fans.

Shrouded fans?? I read in other forums about Spal fans? Can you point out which model and setup

If I was you I'd buy an infared no contact thermometer and check the temperature of different areas of your car. I do not think you have percolation issues with the fuel. I do not think heat is causing your ill running car. It gets hot where I live too and my car runs fine. Did you ever get a coolant temperature with it idling and the thermostat open?

You could get readings from the carbs, the cylinder head and the block, the coil, radiator etc.

https://www.amazon.com/gp/aw/d/B07WZXK6PT/ref=sspa_mw_detail_5?ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwp13NParams

 

 

 

2 hours ago, jalexquijano said:

Shrouded fans?? I read in other forums about Spal fans? Can you point out which model and setup

 That shows my ignorance about electric fans. I've never dealt with them. Members here may have recommendations or check out the discussions over at HybridZ for advice. The only time I had an issue with overheating was solved by re-coring the rad and adding another row. When my fan clutch froze up I replaced it with a flex fan. Never a problem after that.

He's got a California Datsun motor and that guy rips off his next door neighbors so I'm going out on a limb here but selling something to a guy in Panama is awfully suspect to me. I've been on here for at least 10 years and Alex has always had problems with his car.

He had found an experienced Datsun mechanic 6 months ago maybe? but apparently that relationship was short.

I'm carrying on a 3rd person conversation here because he doesn't do what we say that could help HIM. 

Anyway, God helps those who help themselves so maybe prayer is our or way of helping?

Edited January 6, 20223 yr by siteunseen

Not at all site. I thought one of the valve seals was broken and changed both of them. Problem had nothing to do with the engine. Problem arises when car starts misfiring after long stop and go traffic. Too much heat in the manifold.