| Author |
Message |
Dave and Mel (67.76.147.77)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 12:05 pm: | |
We are removing the engine from a scenicruiser to change the transmission. the guys are having trouble loosening the two middle struts - what appears to be fasteners don't want to turn. We have Da Book, but cannot find a clue! Any help is appreciated.
Also, we are considering replacing the radiator fan with electric fan(s). What are your opinions on this?
Thanks ahead of time |
Marc Bourget (209.142.38.81)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 12:11 pm: | |
They don't make electric fans big enough, powerful enough that will fit and work in that situation. Stay with the OEM drive system, if possible or an equivalent replacement. Electric Fans are not an equivalent replacement.
Don't know enough else about Scenicruisers to comment on the fasteners. Do you have the DD Da Book, or the GM body and parts manual "Da Book"?
Onward and Upward
Marc Bourget |
Gary McFarland (Gearheadgary) (68.79.101.181)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 12:46 pm: | |
do a search on the archives on this subject, there is volumes of material on this.
short answer:
You need an electric motor the size of a garbage can to push enough air.
Gary |
DrivingMissLazy (66.168.175.51)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 1:19 pm: | |
And a genset as big as TWO garbage cans to drive the motor!!!
Richard |
Gary McFarland (Gearheadgary) (209.128.79.46)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 1:39 pm: | |
I wasn't going to go into the fact that you would run your batteries completely flat with the engine running the alternator at full output.
gary |
Henry R. Bergman, Jr. (Henryofcj) (67.136.241.239)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 3:49 pm: | |
Yeah, the existing factory radiator fan probably needs at least 20hp and maybe as much as 30.
Requires that much power/energy to move the air thru the radiator sooss the old girl will not...
...overheat pulling that impossible grade in 2nd gear at 9000 feet and 100 degrees.
To move that much air would still require that much energy, no matter where it comes from.
As already said, an electric fan(s) would not be practical. Probably best to leave the...
...factory cooling system alone as the engineers did a GREAT job years and years ago. Enjoy. |
TWO DOGS (65.177.145.16)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 4:48 pm: | |
HOW MUCH FOR YOUR OLD TRANS.???? |
Jayjay (64.12.116.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 07, 2004 - 9:08 pm: | |
We experimented, and the condenser fan from the AC on a 4905 will do OK in moderate weather and sea level, BUT it draws 86 amps!!! If you feel you need more cooling get the fan from a transit coach. 7 blades instead of 5 and 5 inch pitch instead of 3. Sure wish I could get it pointed backward to help the fuel economy. ...JJ |
califbob (199.174.219.202)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 08, 2004 - 1:30 am: | |
Need to take weight off the hangers to zero.
Go to high your right back where you started.
I used a tire air wrench on mine. |
Sojourner (68.60.169.142)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 08, 2004 - 4:33 pm: | |
About cooling fan in bus, all rear engine or pusher type have mandatory need of fan to cool while driving because nature of “frontal” air flow is not there.
Those auto & light truck with electric fan to cool engine are at front where air pressure is greatest.
However electric fan only on when vehicle in 30 mph (vary depend manufacture spec) or less or stand still condition and reach thermostat open temperature.
On the other hand, bus or motorhome rear engine have a handicap condition to get natural cooling air flow due to low or zero or vacuum point area.
So it demand a lot of power to pull enough air flow to equal front radiator design while driving.
For least power fan require to equal CFM are as follow;
1) Direct drive (least)
2) Belt drive
3) Hydraulic drive
4) Electric drive
For whar it's worth.
Sojourn for Christ, Jerry |