brumby blowers

David D · Post by **David D** » Fri Sep 02, 2011 12:42 pm

Hi Everyone

I noticed the other day something unusual about the blowers in my Brumby. The upper vent seems to work as I'd expect - the heater control works and air comes out. However, if I direct the air to the footwells or the windscreen, I seem to be unable to get cold air. The heater control makes it hotter but it's never cold (except prior to the engine warming up). The air does go to where it's supposed to so that mechanism seems OK and the heater control does make the air hotter. I noticed that the plastic air ducts behind where the radio is are pretty warm too.

Is this 'normal' or is something going wrong? Seems odd how the upper vents work fine.

Any thoughts? Don't really wanna take the dash out again:???:

Cheers

David

stenno · Post by **stenno** » Fri Sep 02, 2011 1:06 pm

Could be one of two things:

the cable that runs from the temp dial into the engine bay mounted heater core bypass valve thing, possibly snapped or stretched to buggery.

the valve itself may be seized. you can buy these new from subaru fairly cheap. I have one sitting at home so i can get the part number off it tomorrow if you need.

maybe disconnect the cable first by getting someone to turn the dial while you check that it moves in the engine bay. Then the valve by forcing it to move with something large (multigrips etc). If it breaks it probably needed replacing anyway.

David D · Post by **David D** » Sat Sep 03, 2011 9:19 am

Thanks for that, I'll have to have a look when I get a chance. It still seems strange that I can get cold air from the upper vents but not the lower or the windscreen.

David D · Post by **David D** » Sun Sep 25, 2011 3:09 pm

I finally got round to checking the valve in the engine bay and I can see that it moves when I adjust the heater control. Still have the same problem - no cold air to windscreen or footwells - and the upper vents still seem to work OK. I still don't understand it. Is it worth replacing the valve incase it's worn inside? Or is it more likely a problem with the actual heater unit?

Thanks

David

555Ron · Post by **555Ron** » Sun Sep 25, 2011 7:12 pm

David, my 20 cents would be to replace the valve. Stenno, if you can give us the part no. that would be sweet as mine does the same thing... I've had the unit out of the car so it's not the cables etc...

purp · Post by **purp** » Sun Sep 25, 2011 8:06 pm

Did anyone else ready this thread expecting advice on what supercharger to fit to their brumby?

Silverbullet · Post by **Silverbullet** » Sun Sep 25, 2011 9:49 pm

purp wrote:Did anyone else ready this thread expecting advice on what supercharger to fit to their brumby?

Yes

YouTube · Post by **El_Freddo** » Mon Sep 26, 2011 10:53 pm

The other thing it could be is that the "vent" lever only services the air ducts that face into the occupants - it won't work on the foot or the windscreen settings which could mean that your tap under the bonnet is not closing properly to stop the flow to the heater core in the cabin.

And about the title, i was curious about the content realising that it couldn't have been specifically for a supercharger but just wanted to confirm

Cheers

Bennie

mud_king91 · Post by **mud_king91** » Tue Sep 27, 2011 7:54 am

Silverbullet wrote:Yes

+1

theconcierge · Post by **theconcierge** » Wed Sep 28, 2011 1:42 am

I have the opposite problem. I can't get warm air out of the top vents, only the bottom vents near my feet.

stenno · Post by **stenno** » Wed Sep 28, 2011 6:17 pm

Heater Valve part number : 772013021 (80 - 84 + 83 - 93MV)

Hope that helps

FROG · Post by **FROG** » Thu Sep 29, 2011 8:09 am

stenno wrote:Heater Valve part number : 772013021 (80 - 84 + 83 - 93MV)

Hope that helps

Let me know if you want one

David D · Post by **David D** » Mon Oct 03, 2011 7:14 pm

Thanks for that everyone, and the part numbers too - very helpful. It'll be a couple of weeks before I have time to sort it and I'll PM you about getting the part sometime soonish, frog. I'm hoping it's fairly straight forward to replace?

So sorry about the supercharger confusion - I totally didn't realise!

Thanks again

David

Brumby Kid · Post by **Brumby Kid** » Mon Oct 03, 2011 7:33 pm

David D wrote: So sorry about the supercharger confusion - I totally didn't realise!

You got our hopes up. Oh well. Life goes on.
Is anyone else now thinking about what it would be like?
Or anyone planning to do it?

mud_king91 · Post by **mud_king91** » Mon Oct 03, 2011 7:35 pm

eh im still working on my TT plan for the benz... if anything kills it it will be 30psi rammed down its throat

Brumby Kid · Post by **Brumby Kid** » Mon Oct 03, 2011 7:37 pm

A 3 ton saloon, twin turbo, Interesting!
30 PSI of what?

mud_king91 · Post by **mud_king91** » Mon Oct 03, 2011 7:39 pm

boost id run more but the motor would probably explode

Brumby Kid · Post by **Brumby Kid** » Mon Oct 03, 2011 7:44 pm

Oh right, yeah it would

mud_king91 · Post by **mud_king91** » Mon Oct 03, 2011 7:45 pm

mmm pity i can find a rebuild kit for it... guess ill have to drop a twin cam 104 in it

YouTube · Post by **El_Freddo** » Tue Oct 04, 2011 10:09 am

The supercharged brumby/EA81 has been done before.

Use google or join up on USMB and do a search, there should be pics of it around the traps.

Cheers

Bennie