Fitting electric cooling fan

[Derekm]

I am fitting an electric cooling fan taking off the original engine driven unit, I have read that you should fit a spacer on the end of the crank shaft in place of the old fan unit, is it not possible/advisable to use a shorter bolt to hold the pulleys on?

[steve.n]

I have thought about doing mine by removing the fan but leaving the v c in place, I believe one of the usual suppliers have shorter bolts though.
Steve

[Lingen]

Steve. If you are leaving the V.C in place, why are you removing the fan?
Mike.

[Ritchie6]

No reason why you can't have both. My car has both the original fan and a Kenlowe,although I've never actually used the electric fan except to check that it works.

Richard

[steve.n]

Mike, the idea was to go electric and remove load on the engine. Not sure if this is a good route to take. Opinions welcome
Steve

[trunt]

I am pondering this as well..


There has been some talk regarding under bonnet temperatures, the theory is that the original fan is always moving some air around the engine bay.. which helps keep it cooler.

Its been 102 degrees F over here (39c) this week so I'm tending towards the both of them!! But perhaps not a full size electric fan, maybe 2 smaller ones in top right and left positions so that it doesn't block the airflow but can assist, plus come on after engine shutdown to help with heat soak...along with the electric EWP I'm planning on.

Comments??

Terry

[Jonat127]

Mike Allen the Club technical consultant told me not to do this.
He says it will raise the temp in the engine bay. The mechanical fan is turning all the time, obviously, and this moves air through the engine bay all the time. This is useful particularly at low speeds when the forward motion will not force much air through the radiator.
The electric fan will respond only to the water temperature so the rest of the engine bay could get hotter even if the water isn’t hot enough to actuate the fan.

[steve.n]

Jonat, very good point.

[DJT]

Mike Allen the Club technical consultant told me not to do this.
He says it will raise the temp in the engine bay. The mechanical fan is turning all the time, obviously, and this moves air through the engine bay all the time. This is useful particularly at low speeds when the forward motion will not force much air through the radiator.
The electric fan will respond only to the water temperature so the rest of the engine bay could get hotter even if the water isn’t hot enough to actuate the fan.

Excellent advice. You will never notice the change in fuel consumption from removing the original fan, but you will notice a change in temperature behaviour.

[flying farmer]

I found that due to its body design the Stag will not cool adequately on ram air alone, the temperature guage will forever be going up and down and the fan cutting in and out.

Fitting a TR6 spoiler totally alters the situation though, and the car cools perfectly adequately on ram air alone (except when stuck in traffic)

I have Two Stags running electric fans and no mechanical fan, but both have front spoilers fitted.

[CJG]

Hi Neil
Do you have an opinion on the LD secret spoiler.
Chris

[Lingen]

Steve.
The load on the engine will merely be transferred across to the alternator. The power to run an electric fan has to come from somewhere!.
Mike.

[StagJonno]

Steve.
The load on the engine will merely be transferred across to the alternator. The power to run an electric fan has to come from somewhere!.
Mike.

Very different duty cycles, though. VC fan running 100% of time, electric, for my driving only 10 - 15% time.

Jonno

[flying farmer]

Hi Neil
Do you have an opinion on the LD secret spoiler.
Chris

I got as far as buying one to fit to my K reg stag, but looking at my two Stags together I decided I prefered the look of the TR6 spoiler so I sold it on as there was no point in having both fitted.

The science behind it looks sound. As I mentioned earlier the Stag is the only Triumph I can't get to cool by ram effect alone, though so saying, both my Toledo and my TR have front spoilers fitted,

Fitting the front spoiler to the TR totally transformed its high speed handling,

My Estate does not have a spoiler fitted, but the number plate is mounted below the front panel air intakes as standard (note the position of the number plate on Tony Harts racing Stag). He fitted it like that for a reason!
Neil

[Seaking]

I found that due to its body design the Stag will not cool adequately on ram air alone, the temperature guage will forever be going up and down and the fan cutting in and out.

Fitting a TR6 spoiler totally alters the situation though, and the car cools perfectly adequately on ram air alone (except when stuck in traffic)

I have Two Stags running electric fans and no mechanical fan, but both have front spoilers fitted.

I have fitted a tr6 spoiler and only run a electric fan. The electric fan rarely comes on unless sitting in traffic or engine heat soak after a good run. I have also noted that the engine exhaust manifolds cool down so much quicker now I have stainless steel manifolds fitted .