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Griffin Failed Miserably

BlueMax

Jedi Warrior
Offline
Back in May I had Griffin Thermo Products attempt to replicate a vertical flow MK1 Sprite radiator with modifications to except an 11”auxiliary puller cooling fan and thermo time switch.

Initially I thought that the radiator was correct, but the more I delved into comparisons with T-squares and micrometers the realization Griffin can not build British radiators for the MK1 Spridget with its radiator shroud. The radiator bolted to the radiator support was all they could do correctly. Header tank was attached to core incorrectly where by causing the radiator shroud to hit the top of steering rack mounts. Also you could see that the filler neck was angle down not level, auxiliary cooling fan hit steering rack, problems after problems. You had to show them what you wanted and they just wouldn’t listen to what need to be done, then did what they thought was best.

I started looking for an alternative manufacture to build my radiator. I contacted Ron Davis, Spoke with Bill; I just query him on a few questions about if they could build my radiator. One of the questions that I asked was what size was the bung that threaded to the side of header tank. Bill said that he would get back to me. The following day Bill called with price and the dimension of the bung 5/8 -18 threads he said. Right then I realized I was in trouble. Maybe they could build it but, already gun shy I didn’t like that from the start.

In Chatting with Gundy of my dilemma he suggested Serck out of England. We both agreed knowing the quality of the Serck his car has that obviously I needed to go to the mother land for this endeavor. These people under stood what I was up against and built the radiator that gave me the clearances need to achieve placing an 11” puller fan hard bolted to the radiator. When I spoke with Roy at Serck I ask him what the bung dimensions for the MK1 Spridget, he said I know what size it is. But I needed to have a final push to pull that trigger. Roy said, OH that easy, its ½ BSP, that was it “Sold”

Thanks Gundy for the Suggestion, it’s now fitted and everything is in play as it should be. Now take all it apart and let’s puts some paint on the car.
 
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I was pleased to be at your shop when that puppy came in. Like kids at Christmas.
We tore into miles of bubble wrap.
The thing is so pretty. I was shocked at how light weight the thing was.
Glad it fits. Now get the Sprite painted so I can chase you like the old days.
:cool-new:
 
Very nice looking installation! I am curious as to what the thermal switch in the top tank is out of? or is it just a sending unit for the guage?

Kurt.
 
Thanks, the thermo fan switch is out of a VW rabbit. It opperates at 70-75c and it's 22mm x 1.5 in size.
 
Thanks, the thermo fan switch is out of a VW rabbit. It opperates at 70-75c and it's 22mm x 1.5 in size.

Does it need to operate through a relay? [I would imagine the answer is "yes"]

Kurt.
 
Does it need to operate through a relay? [I would imagine the answer is "yes"]

Kurt.
Jumping in, the answer is yes. 12v electric fans can pull over 30 amps at startup. The Rabbits used fan relays (oh, the memories) and of course modern OEMs use relays. I have a couple of Ford factory fans and they pull over 75 amps at startup. I prefer used OEM over new aftermarket for longevity but it can be hard to find one that fits. Ferzample, a Taurus SHO fan in a '58 Ford with a 460.
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Thanks Tom.
Not wanting to steal the thread but how's the Datsun swap coming?

Kurt.
 
Thanks Tom.
Not wanting to steal the thread but how's the Datsun swap coming?

Kurt.

We are paying for college right now so the Datsun stuff is gonna have to wait. The parts are stored. I am slowly doing some suspension maintenance now so it's off the road for a while.
 
The regular Taurus has a two speed fan IIRC. I have one here. Every fan that I know of uses a relay except for those that use modules like the Taurus. I can't remember if they used a relay too. The Rabbit uses a standard Bosch "regular" size relay which should be universal across the automotive spectrum for most of the older stuff. By older I mean as late as 98 or so. Lots of them switched to the smaller mini relay size which I also believe is a set standard. Don't hold me to that as I could be dead wrong.
 
My wiring harness was custom built by Autospark out of the UK which was constructed with five 30 amp relays, cluster together to be located at the inside firewall. One of the relays will be allocated for the Spal 11” fan that draws 8.5 to 10 amps. This Spal puller fan 30101500 pulls 970 CFM’s which should work perfect with Serck's 38 single row core 1.5” for maximum cooling.
 
Alan, nice radiator, they did a much better job than the UK connecting rod guy did. That looks like the same puller fan I have on the race MGB, it looks so huge on the Bugeye :smile:
 
Thanks Hap! We live and learn, who would have thought that a home towns company like Griffin Thermal Products could not reproduce a replica when you hand delivers the radiator that you wanted replicated? I understand that they are under new ownership; Griffin doesn’t hold a candle to Serck’s quality.

One example Serck's core is aluminum fused, not epoxy like the
Griffin
was?

You couldn’t squeeze 1 more mm of fan in that cavity for sure it covers 80% of the core.

Thanks to you, we at least salvage and corrected an error that would have been a major disaster with the rods.
 
Just curious, but why not a Speedwell radiator?
 
Speedwell makes very nice products; in fact some of his stuff will be on the Healey. But Tom doesn’t make his radiators in the likeness of the original. In my view the header tank on the MK1 is one of its marquise, in conjunction with its radiator shroud that sits at the rear of tank; the shroud has its benefits in cooling too, unless you’re racing. If you’re racing your pushing huge amounts of air through the core, then the shroud or tank wouldn’t matter.
 
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