| Author | Topic |
|---|
Location:
townsville NQLD
Registered:
February 2004
|
|
18r-g aircon setup, will this work??
|
Wed, 19 January 2005 09:38
|
 |
hi,
i have been fidling around tryin to organise a suitable setup to have the 18r-c compressor on the 18r-g. mounting the compressor wont be a problem, but having a suitable belt setup that will work is a bit of work.
the way i have it experimentally setup at the moment is,
pulley1: (the inner pulley) just running the alternator alone.
pulley2: (the outer/3rd pulley) runs over the outer pulley on the water pump, then around the compressor.
now to have the belt connected from the crankshaft pulley to the alternator, i had to machine off the "bigger" pulley on the water pump so that the outside of the belt wouldnt rub.
i then had to space the water pump out by using 2 washers behind the pulley on each bolt (will make proper spacer on lathe later).
my question is;
seeing as the outer pulley on the water pump is smaller than the inner one, will this make it spin too fast???
also, is there enough belt-to-pulley contact on the water pump?? (belt is loose in photo though)
also, will there be too much flex in the belt?? should i use a guide???
if it is any significance, im runnin a thermo fan.
here are the pics
** origional image deleted so page can download quicker**
thanx
brett
[Updated on: Sat, 22 January 2005 11:18]
|
|
|
Location:
Brisbane
Registered:
February 2003
|
|
Re: 18r-g aircon setup, will this work??
|
Wed, 19 January 2005 10:37
|
|
you'll need an idler pulley to adjust tension on the a/c belt - the air con compressor needs to be firmly mounted (e.g. can't pivot)
you might get away with that setup for the water pump -buti doubt there would enough contact from the belt to water pump.
i'd suggest finding a pulley for the water pump that is 'hat' shaped (and brings the belt close to the engine) and let it use the same belt as the alternator - then source/position an idler pulley somewhere for the a/c compressor
|
|
|
Location:
townsville NQLD
Registered:
February 2004
|
|
Re: 18r-g aircon setup, will this work??
|
Wed, 19 January 2005 10:43
|
|
thanx,
that gives me an idea, if i weld 2 "big" pulleys on the water pump pulley, have the aircon runnin off the 2nd cranskaft pulley instead of the 3rd.
then keep the origional setup of the 1st crankshaft pulley running around to the alternator
|
|
|
Location:
Brisbane
Registered:
February 2003
|
|
Re: 18r-g aircon setup, will this work??
|
Wed, 19 January 2005 11:00
|
|
unless your engine uses a serpentine belt, i'd keep the important things (water/alt) on the inner primary belt and special stuff (like a/c and p/s) on the outer.
what's the stock setup for the alt/water pump?
can you run with that with a secondary belt (on crank pulley #2) running over the water pump up to the a/c? as long as both pulley sizes on the water pump are the same this would be sane?.
|
|
|
Location:
Brisbane
Registered:
October 2002
|
|
Re: 18r-g aircon setup, will this work??
|
Wed, 19 January 2005 12:01
|
|
odd,  my w/p and alt run off one belt, the other 2 grooves arent used, i was gonna machine them off
|
|
|
Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
|
|
Re: 18r-g aircon setup, will this work??
|
Wed, 19 January 2005 21:04
|
|
middle groove to me doesnt actually look like it is supposed to take a V belt, or any belt at all. It just looks like a spacing between two belts.
I cant find any pics anywhere of how this is supposed to be done, i vaiguely remember there being an idler pulley just below the a/c compressor.
|
|
|
Location:
Land of Oz
Registered:
June 2004
|
|
Re: 18r-g aircon setup, will this work??
|
Thu, 20 January 2005 04:40
|
|
Hi,
I have an 18RG factory fitted air-con.
There is a dual pulley at the bottom of the engine and another dual pulley on the water pump.
The inside belt (closest to the engine) runs around the alternator and water pump and the big end.
The outside belt (closest to radiator) runs around the a/c compressor, water pump and the bigend.
So, both belts pass over the water pump and go around the big end. Inside belt to alternator, outside belt to a/c.
When my water pump broke some years ago, the car was off the road for nearly two months while I tried to source another unit with dual pulleys.
Both pulleys, on the water pump are the same size.
Witzl is correct, the v-shape is merely the groove between the pulleys and doesn't support a belt.
My a/c compressor is an old piston-type unit, circa 1974. To adjust the a/c belt you need to loosen the a/c compressor securing bolts and move the whole unit. It bolts to the passenger side of the engine, just above the exhaust manifold. I assume your unit would have to bolt on in a similar position.
seeyuzz
river
|
|
|
Location:
townsville NQLD
Registered:
February 2004
|
|
Re: 18r-g aircon setup, will this work??
|
Thu, 20 January 2005 11:26
|
|
| THE WITZL wrote on Thu, 20 January 2005 08:04 |
middle groove to me doesnt actually look like it is supposed to take a V belt, or any belt at all. It just looks like a spacing between two belts.
I cant find any pics anywhere of how this is supposed to be done, i vaiguely remember there being an idler pulley just below the a/c compressor.
|
strange my crankshaft pulley has definately got 3 useable grooves, although there is 4 spaces/grooves in it.
| Mr DOHC wrote on Wed, 19 January 2005 23:01 |
odd, my w/p and alt run off one belt, the other 2 grooves arent used, i was gonna machine them off
|
ok this was my origional *stock as a rock* setup before i tried to fit a aircon
#1 groove(closest to reaer of car) = runs the alternator + water pump. this is infact a pulley that takes a belt.
#2 groove = this is an actual spacing between pulley #1 and pulley #2.
#3 grove = this is infact a pulley that takes a belt. it is the same size as the #1 pulley. runs nothing
#4 grove = this is infact a pulley that takes a belt. it is slightly smaller than pulley #1 and pulley #2. runs nothing
this makes me wonder why it has 3 useable pulleys on it and u guys only says it has 2
| river wrote on Thu, 20 January 2005 15:40 |
Hi,
I have an 18RG factory fitted air-con.
There is a dual pulley at the bottom of the engine and another dual pulley on the water pump.
The outside belt (closest to radiator) runs around the a/c compressor, water pump and the bigend.
So, both belts pass over the water pump and go around the big end. Inside belt to alternator, outside belt to a/c.
When my water pump broke some years ago, the car was off the road for nearly two months while I tried to source another unit with dual pulleys.
Both pulleys, on the water pump are the same size.
Witzl is correct, the v-shape is merely the groove between the pulleys and doesn't support a belt.
My a/c compressor is an old piston-type unit, circa 1974. To adjust the a/c belt you need to loosen the a/c compressor securing bolts and move the whole unit. It bolts to the passenger side of the engine, just above the exhaust manifold. I assume your unit would have to bolt on in a similar position.
seeyuzz
river
|
*this is the setup i will be using now*
#1 groove(closest to reaer of car) = will be running the stock configuration, ie.runs the alternator + water pump. (in the picture i was just playing with options)
#2 groove = this groove does not support a belt, it is a space 
#3 grove = this is infact the puley that will be running the air-con, on my setup anyway. i will have it runnin over the water pump (i have put dual big pulleys on the water pump) and then around the air-con compressor
#4 grove = nothing
| river wrote on Thu, 20 January 2005 15:40 |
Hi,
Witzl is correct, the v-shape is merely the groove between the pulleys and doesn't support a belt.
|
thanx brett
|
|
|
Location:
townsville NQLD
Registered:
February 2004
|
|
Re: 18r-g aircon setup, will this work??
|
Sat, 22 January 2005 11:16
|
|
well this is it at the moment,
i made a custom water pump pulley that has 2 big pulleys on it in stead of one. im pretty confident this will work 
river,
is this similar to your setup???
BTW: belt isnt tight and havent finished making compressor brackets proply yet
thanx alot
brett
|
|
|
Location:
Land of Oz
Registered:
June 2004
|
|
Re: 18r-g aircon setup, will this work??
|
Sun, 23 January 2005 06:12
|
|
Hi,
Yep, that's how it goes.
seeyuzz
river
|
|
|
