[Mgs] Best Electric Cooling Fan for MGA

[WSpohn4 at aol.com]

In a message dated 21/06/2007 9:05:00 AM Pacific Daylight Time,  
Wilkmanracing at aol.com writes:

Before  the rebuild, it would run 190 degrees to 200 plus on  hot 
days.   I figured the rebuild, which included a thorough block and head   
cleaning, would tame these numbers.  While breaking in the cam in  the  
garage with a 
huge floor fan pushing air toward the engine, it  experienced the  same 
pre-rebuild temps.  So, I had the radiator  recored.  But it still  runs at 
the same 
temps on the  road. 


  
____________________________________


There is absolutely nothing wrong with those numbers. You've made sure the  
rad is good, and the thermostat is working. Just live with the temps, on a hot  
day they are par for the course.
 
I highly recommend that people have their filler neck replaced at the time  
they recore the rad so that they can run more than a 7 lb. cap. Using a 15 lb.  
cap allows you a wider margin. It isn't the heat per se that damages engines, 
it  is the boiling when they exceed the ability of the rad and coolant, at 
the  pressure of the cap they are using.
 
Make sure that you install the felt excluder - none of the retailers seem  to 
highlight this part. It is Moss 472-560  on this page   
_http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29239#top_ 
(http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29239#top) 
 
There isn't even a picture or mention of it other than being the  bottom-most 
part on the list. It is glued to the underside of the bonnet so that  it 
bears on the top of the rad when the bonnet is closed and stops air going  over 
the top of the rad instead of through it. IMO it should be highlighted and  
included in the cooling page as it can have a fairly large effect on  cooling.  I 
am going to cc this to Kelvin Dodd in case he wants to do  anything about 
this. Many owners I've talked to don't even know they are  supposed to have one of 
these!
 
I would also like to see some radiator cap make a cap for the deep throat  
that has higher than the
 standard 7 lb.rating, but I expect the demand wouldn't warrant it (we  are a 
pretty small market). I like a 15 lb. cap.  I use a 25 lb. cap on the  
Jamaican.
 
As an alternative, I have machined up a thin aluminum ring that can be  
epoxied into the neck. It has to be the correct thickness to take a shallow neck  
cap and it has to have a hole in the centra that doesn't foul the little valve  
in the cap, but it isn't exactly rocket science. The only problem is that it  
also has to avoid covering the overflow pipe and they vary a little.  I  
suppose someone could make up and sell such a ring that you could pop into your  
original neck and then jsut use a new style short cap.  If the small  overflow 
pipe happened to be occluded, one would just have to get the rad shop  to 
solder it over and move it up a hair.
 
Send your royalty cheques c/o this address......
Bill Spohn