Why do ppl put flow restrictors in their heater cores?

[Georgie]

I'm changing my heater core, and i was wondering why ppl restrict the flow on their heater cores??

 

[95GTAODE]

So they don't blow out a brand new heater core. Ford did this as well.

 

[Roland69]

I learned the hard way that ford heater cores dont like it when you rev high. It pushes to much coolant through the core and eff's them

 

[8950HO]

The restrictor reduces the flow/pressure on the core resulting in less strain on the core.

If you buy a brand new heater core inlet hose,it should/will have a restrictor in place in the hose already.
The Ford hose I recently bought had the restrictor in place.

 

[bsedwebt70-5.0]

The Ford heater hose I bought recently had it built in too but if it did not I was going to use a cheap 3/8 drive socket that fit the hose inner diameter and hold it in place with a hose clamp - quick easy idea.

 

[Roland69]

^^ that is what I was thinking of using

 

[Roland69]

LOL or drill small hole in a honda's piston and install the piston in the heater hose the same way as the socket would lol

 

[Daggar]

The Ford heater hose I bought recently had it built in too but if it did not I was going to use a cheap 3/8 drive socket that fit the hose inner diameter and hold it in place with a hose clamp - quick easy idea.

Not such a hot idea if the socket is nickel or chromium plated (most are chromium).

 

[stangbear427]

LOL or drill small hole in a honda's piston and install the piston in the heater hose the same way as the socket would lol

that's awsome

 

[Georgie]

thanx guys..i ordered the hoses from latemodelrestoration...do u think they will have the restrictor in their?

 

[stangbear427]

eeee... dunno. If it's Motorcraft it will. You never know with their stuff. I've sent many hundreds, likely thousands, of $ to LRS. Some of it is real Motorcraft, lots of it is garbage. It pays to ask them when you order if it is a genuine Ford part or not. Don't ask if it's OEM, half the "OEM" stuff I've bought from them was some repro in LRS packaging. All of the LRS repro stuff isn't junk, don't get me wrong- but some of it is much better than others. Never having bought these particular hoses from them, I couldn't say. You'll know soon enough. If they don't have the restrictor though, don't use a socket... you'd be much better off using a Honda piston.

 

[Georgie]

IILL MACHINE ONE OUT OF ALUMINIUM