TR4/4A 4A Yellow Blade

[Tomster]

HELP!!!
Looking at the engine/rad fan conversion kit T56G12 8 blade Rad Fan and T26 mounting hardware kits from TRF seen here https://www.zeni.net/trf/specials06/index.php?zoom=0.6&menu=&page=11
Anyone have any personal , practical experience on a 4A with this specific kit. Their sale ends Wed. so any speedy help would be appreciated
Thanks In Advance!
T

 

[Tomster]

Sorry, part #'s (308353)T56G12 8 blade Rad Fan and (RFK180) T26 mounting hardware

 

[DNK]

I thought the yellow fan wasn't available any more?

 

[Geo Hahn]

No personal experience but I did snap a photo of one at Triumphest the other day...

I think this was on a TR4 but may help you assess the applicability for your 4A.

 

[TR4nut]

I have a yellow blade kit from TRF fitted on my TR4 - the quality is very good as usual, and the fan is a marked improvement over the 4 blade original.

On my TR4, I did need to use a fan extender (and dog bolt) from a TR3 to get clearance. I don't have experience on the 4a to say if you'll need that or not.

Regards,
Randy

 

[Tomster]

Did the extender and dog bolt come as part of your "kit" or were you sent on a search for these?

 

[TR4nut]

The TRF kit does not include the extender - I bought a new one from Moss, though I've seen them pretty regularly on ebay as an option. The dog bolt was an ebay buy, but an option would be to just have a machine shop shorten the existing bolt you have.

Probably easiest to take some measurements and see if you need the shorter extension - I can get you some from my TR4 tonight if you need them as reference.

Randy

 

[Tomster]

order goes in Wed. So no rush on measurements Thanx

 

[TR4nut]

Okay, even though this is a repeat I had a couple of pics available to show the differences and dimensions:

On my TR4, there is approximately 6" of space between the end of the fan pulley and the radiator. The plastic fan is 1.75" wide. With the installed fan, I have 0.75" clearance:

The TR3 fan extension is 0.75" shorter than the TR4 extension, which gave me the clearance:

Here is a pic showing the original fan & extension, along with the replacement setup - lengths are very close to each other:

Randy

 

[SCguy]

I did this mod on my TR4. Works nicely although I've been advised that an electric fan is still the way to go.

 

[PeterK]

Thing I don't like about the electric fan on my 3A is the noise - sounds like an electric fan on a new car.

I like the mechanical whoosh when I punch the throtle and hardly use the electric unless absolutely needed.

YMMV

 

[BOXoROCKS]

why not just use the 6 bladed metal fan from a TR4A and save all the hassle.

 

[Tomster]

Tropical 6 blade? Haven't located one anywhere. I remember as well in a previous thread about the difficulty finding one.
I am also concerned about the risk of metal fatigue with the existing fan, again from previous thread. The possibility of the fan coming apart and thru hood etc

 

[PeterK]

Tropical fan just sold in the last couple of days for just over $100. Good cond not perfect.

 

[TR4nut]

Tropical fan just sold in the last couple of days for just over $100. Good cond not perfect.

Yep, I was watching that one with interest while it was still below $50 - still not sure if I'd use it over the yellow fan though as I think that works quite well for me.

Regards,
Randy