blower motor upgrade
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
any body figure this one out yet need more volume nothing wrong just looking for more volume
Last edited by freegdr; Oct 29, 2015 at 12:21 AM.
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
the best you will ever get it is with a new blower motor resistor im looking for a harder blowing motor upgrade ya no
Last edited by freegdr; Oct 10, 2015 at 05:46 AM.
CF Veteran
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Clean out the fins on the heater core and A/C evaporator, they tend to get clogged with dirt, dust, pet hair, and other junk. If those two things are packed full of crap, you won't get any output from the dash vents.
This probably won't help, but back when I had a cj5 I switched the blower motor out for a 4 speed unit from a '93 freightliner. mounting plate and everything was the same, had to enlarge the hole through the firewall slightly. It would put out enough heat to keep you toasty with the soft top and soft doors at 65 mph.
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
This probably won't help, but back when I had a cj5 I switched the blower motor out for a 4 speed unit from a '93 freightliner. mounting plate and everything was the same, had to enlarge the hole through the firewall slightly. It would put out enough heat to keep you toasty with the soft top and soft doors at 65 mph.
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
it blows good but when it hits a100 degrees here i would like alittle more it gets hot in the glades when mudding
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Yep, didn't want to jinx myself, so I'll just say I have no experience with the xj blowers. I found the freightliner would fit because I was changing blower motors in a semi and my jeep at the same time.
Junior Member
Joined: Aug 2011
Posts: 92
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From: san jacinto
Year: 1989
Model: Cherokee
Engine: 4.0
Seasoned Member
Joined: Mar 2010
Posts: 379
Likes: 1
From: Modesto
Year: 1993
Model: Cherokee
Engine: 4.0 high output straight 6
I think the best you could do is find an electric motor rebuilder have them strip the motor down and rewrap the stator.
Bigger wire on stator = less wire wraps = lower speed more torque
Thinner wire on stator = more wire wraps = higher speed less torque = more airflow
Don't see why it wouldn't work I used to rewrap my RC car motors all the time and it was awesome.
I might get a jy blower and rewrap it. I will post back if I decide to try
Bigger wire on stator = less wire wraps = lower speed more torque
Thinner wire on stator = more wire wraps = higher speed less torque = more airflow

Don't see why it wouldn't work I used to rewrap my RC car motors all the time and it was awesome.
I might get a jy blower and rewrap it. I will post back if I decide to try


