PT Radiator Air Scoop
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08-06-2008, 20:58
Post: #11
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PT Radiator Air Scoop
When I was cleaning out my Cruisair coils, I took the louvered panel off the radiator and cleaned that, also. You wouldn't believe all the gunk that came out of there.
I'm at the fairgrounds in Livingston, Mt and the carnies are here with their big generator. There radiator is so plugged up I wonder why the engine doesn't burn up~
Ernie Ekberg 83PT40 Livingston, Montana Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos. |
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08-07-2008, 00:20
Post: #12
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PT Radiator Air Scoop
Scott,
I have a scoop on my 85PT40. Living in Texas, and knowing that heat is the ultimate killer of diesels and having to go thru the whole cooling system lead me to add the scoop. The scoop sticks out 4 inches and is 7 inches wide. The size was determined partially by the aluminum trim on the sides, so the scoop would match it visually from the side of the bus. I measured my existing louvered grill and had a stainless steel scoop made to fit over the grill at the end. The scoop and 2 additional modifications lowered my temps 10 degrees. I now run a maximum of 180. I also put in 10 degree lower thermostats and changed my 1 speed engine cooling fan to a 2 speed. I can send you a picture if you want. The mods also lower the engine oil temp, the tranny temp and the power steering/fan system temp. Rick Archie 85PT40 "Fort R" Fort Worth --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <scottforman75@...> wrote: > > If the scoop pushed more air through the radiator, it could lower > operating temp to the point that the alarmastat doesn't kick in. > More air=cooler, that is the whole point of the fan. I am not > looking for lesson on how the colling system works, and if you payed > attention you would see that I just mentioned that I have a freshly > re-cored (i.e. NOT DIRTY) radiator in my bus. I am looking for > people that have anecdotal stories about scoops, not for people who > are answering every question except the one I asked. > > Scott > > --- In WanderlodgeForum@yahoogroups.com, Leroy Eckert > > > > > First the scoop will not cool the radiator any quicker or cooler or > reduce the fan on off sequence because the water temp is controlled > by an instrument *Alarmstat* designated by BB. It the radiator is > plugged up it ain't gonna cool, scoop, extra fans or anything else. > On most coaches through 1994 there is an Alarmstat which senses the > water temp and activates the fan to high mode and back to idle mode > constantly if the fan override and the chassis a/c is off. It cycles > between -+ 8 degrees. It was specified by BB at 195 degrees. > Accordingly, the fan in idle mode spins between 200 and 600 rpm at > engine rpm values 800-2100 rpm according to my BB manuals. So, if > the radiator is not clean and good massive amounts of air will do not > good the result being the fan will cycle more often. In high mode, > chassis a/c on; or fan override on; the fan runs at approx. 1800 rpm. > The only thing that will stop the fan high/idle mode sequence timing > is a new radiator. > > It makes a lot of sense. Bad radiator, no air flow, no efficient > cooling. A scoop is not going to help a bad radiator. It is that > simple. Of course it may help for a bit if you remove the Alarmstat, > let the fan run constantly and you may see some reduced temps. > > I have jacked with my bus using VMSpc for quite some time and I > cannot prove the old wife's tale that the fan reduces mileage. I have > documents with lots of numbers on them that support my opinion. I > realize opinions are like a$$holes, everyone has one. However, my > numbers prove my statement. I long ago changed my Alarmstat to 190 > degrees after talking to BB and Detroit Diesel mechanics. I have seen > a 7% decrease in overall temps without a decrease in mileage. I have > a good radiator. > > My conclusion is, the Birds did not have a problem when they were > built or there would have been a recall. 15-20 year old radiators > need a good going over and all will be well. No scoop needed. > > Think of an Alarmstat as a forced high temp thermostat, because > that is what it is. > > > > Leroy Eckert > > 1990 WB-40 Smoke N Mirrors > > Dahlonega, GA > > Royale Conversion > > > > --- On Wed, 8/6/08, Scott Forman <scottforman75@> wrote: > > From: Scott Forman <scottforman75@> > > Subject: [WanderlodgeForum] Re: PT Radiator Air Scoop > > To: WanderlodgeForum@yahoogroups.com > > Date: Wednesday, August 6, 2008, 8:07 PM > > > > > > > > > > > > > > > > > > > > > > > > I do not have a cooling problem, in fact I just re- > cored my > > > > radiator. Just wondering if the scoop could give me the 5 degrees > I > > > > need to keep the fan from kicking on...which as we all know saps > fuel > > > > economy...during hot weather. > > > > > > > > Scott > > > > > > > > --- In WanderlodgeForum@ yahoogroups. com, "Gregory OConnor" > > > > > > > > > > > > > > Scott, when the engineered systems will no longer control the > heat, > > > > > there is issue with the systems. to make things run cooler at > more > > > > > stress, can only prove to allow more stress than engineered. I > pust > > > > it > > > > > to the limits of heat befor I back off stress. A mod to help > > > > overcome > > > > > ambient temp influence like the radiator evaporative cooler MikeH > > > > uses > > > > > is one mod I would like to try. > > > > > > > > > > GregoryO'Connor > > > > > 94ptRomolandCa > > > > > > > > > > > > > > > > > > > > --- In WanderlodgeForum@ yahoogroups. com, "Scott Forman" > > > > > <scottforman75@ > wrote: > > > > > > > > > > > > There was some talk a while back about fabricating an air scoop > > > > for > > > > > the > > > > > > radiator grill on a PT to increase air flow through the > > > > radiator. > > > > > Did > > > > > > anyone install one? Does it seem to make a difference? How > did > > > > you > > > > > > build it? > > > > > > > > > > > > Scott Forman > > > > > > 86 PT38 > > > > > > Memphis > > > > > > > > > > > > > > |
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08-07-2008, 02:05
Post: #13
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PT Radiator Air Scoop
Scott, I would be interested in seeing the scoop. How much did it cost?
--
RE -------------- Original message from "Rick A." |
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08-07-2008, 03:50
Post: #14
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PT Radiator Air Scoop
Rick, do you think the scoop did the trick of lowering the temp by
10 degrees or was it reduced by replacing the thermostat with one 10 degrees lower? My mom had a slab leak under the Garage. She prayed about it every day for a week. I ;removed the garage floor ;replumbed the washer and U-sink ;repoured the floor slab ; paid the mud, pipe and labor. One month with no leak and she now proclaims "My prayers were answered". I need some credit here, maybe the -10 degree thermostat does also. GregoryO'Connor 94ptRomolandCa --- In WanderlodgeForum@yahoogroups.com, "Rick A." wrote: > > Scott, > I have a scoop on my 85PT40. Living in Texas, and knowing that heat is the ultimate > killer of diesels and having to go thru the whole cooling system lead me to add the > scoop. > The scoop sticks out 4 inches and is 7 inches wide. The size was determined partially > by the aluminum trim on the sides, so the scoop would match it visually from the side of > the bus. I measured my existing louvered grill and had a stainless steel scoop made to fit > over the grill at the end. > The scoop and 2 additional modifications lowered my temps 10 degrees. I now run a > maximum of 180. I also put in 10 degree lower thermostats and changed my 1 speed > engine cooling fan to a 2 speed. I can send you a picture if you want. The mods also > lower the engine oil temp, the tranny temp and the power steering/fan system temp. > > Rick Archie > 85PT40 "Fort R" > Fort Worth > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <scottforman75@> > wrote: > > > > If the scoop pushed more air through the radiator, it could lower > > operating temp to the point that the alarmastat doesn't kick in. > > More air=cooler, that is the whole point of the fan. I am not > > looking for lesson on how the colling system works, and if you payed > > attention you would see that I just mentioned that I have a freshly > > re-cored (i.e. NOT DIRTY) radiator in my bus. I am looking for > > people that have anecdotal stories about scoops, not for people who > > are answering every question except the one I asked. > > > > Scott > > > > --- In WanderlodgeForum@yahoogroups.com, Leroy Eckert > > > > > > > > First the scoop will not cool the radiator any quicker or cooler or > > reduce the fan on off sequence because the water temp is controlled > > by an instrument *Alarmstat* designated by BB. It the radiator is > > plugged up it ain't gonna cool, scoop, extra fans or anything else. > > On most coaches through 1994 there is an Alarmstat which senses the > > water temp and activates the fan to high mode and back to idle mode > > constantly if the fan override and the chassis a/c is off. It cycles > > between -+ 8 degrees. It was specified by BB at 195 degrees. > > Accordingly, the fan in idle mode spins between 200 and 600 rpm at > > engine rpm values 800-2100 rpm according to my BB manuals. So, if > > the radiator is not clean and good massive amounts of air will do not > > good the result being the fan will cycle more often. In high mode, > > chassis a/c on; or fan override on; the fan runs at approx. 1800 rpm. > > The only thing that will stop the fan high/idle mode sequence timing > > is a new radiator. > > > It makes a lot of sense. Bad radiator, no air flow, no efficient > > cooling. A scoop is not going to help a bad radiator. It is that > > simple. Of course it may help for a bit if you remove the Alarmstat, > > let the fan run constantly and you may see some reduced temps. > > > I have jacked with my bus using VMSpc for quite some time and I > > cannot prove the old wife's tale that the fan reduces mileage. I have > > documents with lots of numbers on them that support my opinion. I > > realize opinions are like a$$holes, everyone has one. However, my > > numbers prove my statement. I long ago changed my Alarmstat to 190 > > degrees after talking to BB and Detroit Diesel mechanics. I have seen > > a 7% decrease in overall temps without a decrease in mileage. I have > > a good radiator. > > > My conclusion is, the Birds did not have a problem when they were > > built or there would have been a recall. 15-20 year old radiators > > need a good going over and all will be well. No scoop needed. > > > Think of an Alarmstat as a forced high temp thermostat, because > > that is what it is. > > > > > > Leroy Eckert > > > 1990 WB-40 Smoke N Mirrors > > > Dahlonega, GA > > > Royale Conversion > > > > > > --- On Wed, 8/6/08, Scott Forman <scottforman75@> wrote: > > > From: Scott Forman <scottforman75@> > > > Subject: [WanderlodgeForum] Re: PT Radiator Air Scoop > > > To: WanderlodgeForum@yahoogroups.com > > > Date: Wednesday, August 6, 2008, 8:07 PM > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I do not have a cooling problem, in fact I just re- > > cored my > > > > > > radiator. Just wondering if the scoop could give me the 5 degrees > > I > > > > > > need to keep the fan from kicking on...which as we all know saps > > fuel > > > > > > economy...during hot weather. > > > > > > > > > > > > Scott > > > > > > > > > > > > --- In WanderlodgeForum@ yahoogroups. com, "Gregory OConnor" > > > > > > > > > > > > > > > > > > > > Scott, when the engineered systems will no longer control the > > heat, > > > > > > > there is issue with the systems. to make things run cooler at > > more > > > > > > > stress, can only prove to allow more stress than engineered. I > > pust > > > > > > it > > > > > > > to the limits of heat befor I back off stress. A mod to help > > > > > > overcome > > > > > > > ambient temp influence like the radiator evaporative cooler MikeH > > > > > > uses > > > > > > > is one mod I would like to try. > > > > > > > > > > > > > > GregoryO'Connor > > > > > > > 94ptRomolandCa > > > > > > > > > > > > > > > > > > > > > > > > > > > > --- In WanderlodgeForum@ yahoogroups. com, "Scott Forman" > > > > > > > <scottforman75@ > wrote: > > > > > > > > > > > > > > > > There was some talk a while back about fabricating an air scoop > > > > > > for > > > > > > > the > > > > > > > > radiator grill on a PT to increase air flow through the > > > > > > radiator. > > > > > > > Did > > > > > > > > anyone install one? Does it seem to make a difference? How > > did > > > > > > you > > > > > > > > build it? > > > > > > > > > > > > > > > > Scott Forman > > > > > > > > 86 PT38 > > > > > > > > Memphis > > > > > > > > > > > > > > > > > > > > > |
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08-07-2008, 06:01
Post: #15
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PT Radiator Air Scoop
I would be very interested in seeing some pictures. What did it cost
to have it fabricated? Scott --- In WanderlodgeForum@yahoogroups.com, "Rick A." wrote: > > Scott, > I have a scoop on my 85PT40. Living in Texas, and knowing that heat is the ultimate > killer of diesels and having to go thru the whole cooling system lead me to add the > scoop. > The scoop sticks out 4 inches and is 7 inches wide. The size was determined partially > by the aluminum trim on the sides, so the scoop would match it visually from the side of > the bus. I measured my existing louvered grill and had a stainless steel scoop made to fit > over the grill at the end. > The scoop and 2 additional modifications lowered my temps 10 degrees. I now run a > maximum of 180. I also put in 10 degree lower thermostats and changed my 1 speed > engine cooling fan to a 2 speed. I can send you a picture if you want. The mods also > lower the engine oil temp, the tranny temp and the power steering/fan system temp. > > Rick Archie > 85PT40 "Fort R" > Fort Worth > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <scottforman75@> > wrote: > > > > If the scoop pushed more air through the radiator, it could lower > > operating temp to the point that the alarmastat doesn't kick in. > > More air=cooler, that is the whole point of the fan. I am not > > looking for lesson on how the colling system works, and if you payed > > attention you would see that I just mentioned that I have a freshly > > re-cored (i.e. NOT DIRTY) radiator in my bus. I am looking for > > people that have anecdotal stories about scoops, not for people who > > are answering every question except the one I asked. > > > > Scott > > > > --- In WanderlodgeForum@yahoogroups.com, Leroy Eckert > > > > > > > > First the scoop will not cool the radiator any quicker or cooler or > > reduce the fan on off sequence because the water temp is controlled > > by an instrument *Alarmstat* designated by BB. It the radiator is > > plugged up it ain't gonna cool, scoop, extra fans or anything else. > > On most coaches through 1994 there is an Alarmstat which senses the > > water temp and activates the fan to high mode and back to idle mode > > constantly if the fan override and the chassis a/c is off. It cycles > > between -+ 8 degrees. It was specified by BB at 195 degrees. > > Accordingly, the fan in idle mode spins between 200 and 600 rpm at > > engine rpm values 800-2100 rpm according to my BB manuals. So, if > > the radiator is not clean and good massive amounts of air will do not > > good the result being the fan will cycle more often. In high mode, > > chassis a/c on; or fan override on; the fan runs at approx. 1800 rpm. > > The only thing that will stop the fan high/idle mode sequence timing > > is a new radiator. > > > It makes a lot of sense. Bad radiator, no air flow, no efficient > > cooling. A scoop is not going to help a bad radiator. It is that > > simple. Of course it may help for a bit if you remove the Alarmstat, > > let the fan run constantly and you may see some reduced temps. > > > I have jacked with my bus using VMSpc for quite some time and I > > cannot prove the old wife's tale that the fan reduces mileage. I have > > documents with lots of numbers on them that support my opinion. I > > realize opinions are like a$$holes, everyone has one. However, my > > numbers prove my statement. I long ago changed my Alarmstat to 190 > > degrees after talking to BB and Detroit Diesel mechanics. I have seen > > a 7% decrease in overall temps without a decrease in mileage. I have > > a good radiator. > > > My conclusion is, the Birds did not have a problem when they were > > built or there would have been a recall. 15-20 year old radiators > > need a good going over and all will be well. No scoop needed. > > > Think of an Alarmstat as a forced high temp thermostat, because > > that is what it is. > > > > > > Leroy Eckert > > > 1990 WB-40 Smoke N Mirrors > > > Dahlonega, GA > > > Royale Conversion > > > > > > --- On Wed, 8/6/08, Scott Forman <scottforman75@> wrote: > > > From: Scott Forman <scottforman75@> > > > Subject: [WanderlodgeForum] Re: PT Radiator Air Scoop > > > To: WanderlodgeForum@yahoogroups.com > > > Date: Wednesday, August 6, 2008, 8:07 PM > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I do not have a cooling problem, in fact I just re- > > cored my > > > > > > radiator. Just wondering if the scoop could give me the 5 degrees > > I > > > > > > need to keep the fan from kicking on...which as we all know saps > > fuel > > > > > > economy...during hot weather. > > > > > > > > > > > > Scott > > > > > > > > > > > > --- In WanderlodgeForum@ yahoogroups. com, "Gregory OConnor" > > > > > > > > > > > > > > > > > > > > Scott, when the engineered systems will no longer control the > > heat, > > > > > > > there is issue with the systems. to make things run cooler at > > more > > > > > > > stress, can only prove to allow more stress than engineered. I > > pust > > > > > > it > > > > > > > to the limits of heat befor I back off stress. A mod to help > > > > > > overcome > > > > > > > ambient temp influence like the radiator evaporative cooler MikeH > > > > > > uses > > > > > > > is one mod I would like to try. > > > > > > > > > > > > > > GregoryO'Connor > > > > > > > 94ptRomolandCa > > > > > > > > > > > > > > > > > > > > > > > > > > > > --- In WanderlodgeForum@ yahoogroups. com, "Scott Forman" > > > > > > > <scottforman75@ > wrote: > > > > > > > > > > > > > > > > There was some talk a while back about fabricating an air scoop > > > > > > for > > > > > > > the > > > > > > > > radiator grill on a PT to increase air flow through the > > > > > > radiator. > > > > > > > Did > > > > > > > > anyone install one? Does it seem to make a difference? How > > did > > > > > > you > > > > > > > > build it? > > > > > > > > > > > > > > > > Scott Forman > > > > > > > > 86 PT38 > > > > > > > > Memphis > > > > > > > > > > > > > > > > > > > > > |
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09-09-2008, 16:34
Post: #16
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PT Radiator Air Scoop
I tied ribbons in my grill last week and taped a piece of erect flat
plastic pointed outward at drivers window and grill to get a clue on air flow. wont comment because you guys wont believe it. |
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09-10-2008, 02:48
Post: #17
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PT Radiator Air Scoop
I'm game, if the fan is not running there is no airflow or it is
sucking the air out? Marty Gregg 95 BMC 37 Kennewick WA |
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09-10-2008, 10:26
Post: #18
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PT Radiator Air Scoop
You can't leave us hanging like that.
Scott Forman 86 PT38 Memphis --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor" > > > I tied ribbons in my grill last week and taped a piece of erect flat > plastic pointed outward at drivers window and grill to get a clue on > air flow. wont comment because you guys wont believe it. > |
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09-10-2008, 16:08
Post: #19
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PT Radiator Air Scoop
Hey Greg...I'll believe anything ..until I won't... Please fill us in.
We are hanging... On Wed, Sep 10, 2008 at 3:26 PM, Scott Forman <"scottforman75@gmail.com"> wrote:
-- Curt Sprenger 1987 PT38 8V92 "MacAttack Racing" Anaheim Hills, CA |
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09-10-2008, 17:22
Post: #20
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PT Radiator Air Scoop
Gregg......
Do I need to add Air Louvers like on the Eagle, rotate the grill 45 degrees, Do I have to tie ribbons on the grill and go for a drive???? Come on cough it up........ Kurt Horvath 95 PT-42 10AC --- In WanderlodgeForum@yahoogroups.com, "Curt Sprenger" > > Hey Greg...I'll believe anything ..until I won't... Please fill us in. > > We are hanging... > > On Wed, Sep 10, 2008 at 3:26 PM, Scott Forman <scottforman75@...>wrote: > > > You can't leave us hanging like that. > > > > Scott Forman > > 86 PT38 > > Memphis > > > > --- In WanderlodgeForum@yahoogroups.com > > "Gregory OConnor" > > > > > > > > > > > I tied ribbons in my grill last week and taped a piece of erect > > flat > > > plastic pointed outward at drivers window and grill to get a clue on > > > air flow. wont comment because you guys wont believe it. > > > > > > > > > > > > > -- > Curt Sprenger > 1987 PT38 8V92 "MacAttack Racing" > Anaheim Hills, CA > |
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