5 replies to this topic

[lisalex]

Hi

 

Apologies if this has been asked before, I've done a bit of searching and come up short.

 

I'm looking to provide additional coolant flow out of the dead end of the head, without fitting a dry deck kit. Application is a rally car with no heater.

 

 

I was originally thinking that I could run a hose from the heater outlet on the end of the head straight to a fitting welded into the top tank of the radiator.

 

But I've discovered that some models had a "sandwich plate" that provided a takeoff for the heater at the thermostat housing.

 

 

So the question is - is there going to be effective benefit in piping the heater outlet on the end of the head to the fitting on a thermostat sandwich plate?

What about connecting it to the top tank of the radiator?

 

I'm not keen on plumbing it directly to the bottom hose, as it's basically taking some of the hottest coolant, and feeding it straight back into the engine, when it should be going to the top of the radiator.

 

Thanks all

[nicklouse]

First question are you running a heater?

[PoolGuy]

Application is a rally car with no heater.

[nicklouse]

Cheers.

 

i would fit a heater knowing just how fogging it can get in a rally car.

 

But.

 

i have always run my flow back to the bottom hose heater input as there you are mixing with the coolest water in the circuit.

 

now some people have said that you should run it into the top hose or header of the rad. So thst all the hot water gets cooled. As far as the efficiency of the system goes it makes no difference as the rad can only lose X degrees over a certain time for a given fluid flow.

 

i should also like to throw in the MPI cooling routing. When the heater tsp is open heat goes to the heater when closed it flows direct to the bottom hose.

 

i would not use the sandwich as a return.

[lisalex]

Thanks all

 

One more question - do the commonly available bottom hoses with the heater takeoff simply push inside standard 5/8" heater hoses (then clamp up), or is a host connector required?

 

Cheers

[GraemeC]

Needs either a 1/2”-1/2” or a 1/2”-5/8” connector (dependant on what size heater hose your using).