Radiator position

[canuck]

Approximately 3 months ago I posted a query about installing a 3 main 18G engine to my Riley. The problem was/is finding a matching/compatible water pump to fit the engine & car. 

Unfortunately no one responded to my request.   link below.

rileymotorclub.proboards.com/thread/684/water-pump-help

So let me try again,

I have conceded the fact that I need to use a MGB 3 main water pump which unfortunately has a longer than Riley water pump snout. As one rapidly deduces I will encounter interference of cooling fan with the radiator.  Not good! 

Question;

I had a quick look and this seems feasible I simply move the radiator forward of its current position? just forward of the mounting flanges? Using a nylon spacer or the like and longer bolts seems possible. 


Has anybody been faced with this situation? come up with a solution? comments? thoughts?  

TIA

Bruce

[2robert4]

I have not been faced with this problem which is ultimately caused by modification, an easy if not cheap resolution would be to fit a custom built Aluminium Radiator with a thicker core offset forward this is required due to the extra power generated by the larger engine and the extra offset to clear the pump nose along with captive nuts fitted on the side rails to make it easy to fit the retaining bolts rather than bolts nuts and washers which can be a pain to remove and refit at present.
Good Luck

NP

[canuck]

Nigel,
Thanks for this response.  

I had not even considered requiring more cooling capacity.  Food for thought I guess. Do you think this necessary? 

I know that many Magnette ZA/B owners do this transplant and do not upgrade the radiator. 

B

[noddy]

Bruce,
We run a standard rad with extra fans in the racer. Never overheated whilst racing!
Roger

[canuck]

I appreciate the information Roger.  May I be so bold, I will guess electric, but pusher or puller fan?  brand name or size diameter?


I will not be at George for a few weeks, however when I am I will investigate moving the radiator forward.  If so, will a pusher fan fit with radiator in the forward position?

Maybe delete the mechanical fan, leave the radiator where it is and add a pusher fan?  

Good food for thought 

Bruce

[noddy]

Bruce,
Its a big Kenlowe fan that we use as a 'puller'. I don't know the size - but its as big as we could get to fit the radiator.
The temp cut in is fully adjustable and we have an over-ride button and a run-on button (so fan stays on even with ignition off)  both within easy reach of the driver.
Hope this helps,
Rog.

[canuck]

Mar 20, 2019 6:41:34 GMT noddy said:

Bruce,
Its a big Kenlowe fan that we use as a 'puller'. I don't know the size - but its as big as we could get to fit the radiator.
The temp cut in is fully adjustable and we have an over-ride button and a run-on button (so fan stays on even with ignition off)  both within easy reach of the driver.
Hope this helps,
Rog.

Thank you Roger. 

As is often the case when one question is answered others are raised!    I will thoroughly investigate my options when next at George.

As I read up on Kenlowe ™  website, and I fully expected this, the larger the fan, = more air moved, which is the goal, the greater the amperage draw.  More importantly will be how to handle the inrush current at start up of the fan.  

A few challenges as I see this;

- George is still positive earth electrics, with a polarity sensitive solid state fuel pump etc.  so likely to remain so .
- George is still equipped with the OE dynamo, Yikes! 
- George still wearing the original wiring harness etc.  double Yikes!

Oh dear I do love this hobby!   although see this a as challenge not a hindrance. 

Un gros merci!

Bruce