TRS, Again

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BobbyFord
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TRS, Again

Post by BobbyFord »

O.K., back to this TRS thing again.
A little background on my truck; '72 F100 short bed, 5000GVW, 3600# 9 3/8 rear axle, 360/C6(with TRS). My truck was very stock and unmolested until I took the 360/C6 out and put in the 460/C6.
Since I no longer have the C6 that was mated to the 360, I've decided to remove all of the other TRS related components and use the switched electrical supply wire for the TRS as a 12V power wire for my new MSD ignition box.
I've studied the wiring diagram for the 1972 version of the TRS and my wiring does not resemble the TRS wiring in the 1972 Master Wiring Diagram. I did have the ambient temp sensor in the left door jamb, I did have the vacuum soleniod on the intake that had 2 vacuum lines as well as wires that went from the firewall to the solenoid and then a single wire from the solenoid that went down to a switch screwed into a line port on the C6 at the intermediate servo. I do not, however, have a speedo sensor or emission control module or any wires associated with either but mine does look exactly like the depiction in the TRS System Handbook located in the Factory Literature Library.
So...................my question is why is there a TRS related speed sensor and module shown in the 1972 Master Wiring Diagram but not depicted or even mentioned in the TRS System Handbook? :hmm:
Theres is definitely no sensor or module on my TRS equipped truck.
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Re: TRS, Again

Post by FORDification »

There were several different versions, the TRS was a later incarnation of the Distributor Modulator System. View a training film review booklet about it here:

http://www.fordification.com/library/ma ... temId=2323

Does that look more like the setup on your original engine?
____| \__
-O-----O- Keith
'67 F-100 2WD SWB ~ '69 F-100 4WD SWB w/7" chop ~ 1975 F-250 Ranger XLT Supercab Camper Special
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Re: TRS, Again

Post by BobbyFord »

Negative on the Distovac.
Mine looks like the diagram here
http://www.fordification.com/library/ma ... temId=6331
Anyhow I was curious because OldRedFord said his had the module and speed sensor. Mine must just have been a later version.
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Re: TRS, Again

Post by FORDification »

BobbyFord wrote:Negative on the Distovac.
Mine looks like the diagram here
http://www.fordification.com/library/ma ... temId=6331
Anyhow I was curious because OldRedFord said his had the module and speed sensor. Mine must just have been a later version.
...or he actually had the Distovac instead of the TRS. ;)
____| \__
-O-----O- Keith
'67 F-100 2WD SWB ~ '69 F-100 4WD SWB w/7" chop ~ 1975 F-250 Ranger XLT Supercab Camper Special
ImageImageImage
My '67 restoration video
-> Posting and you! <-a MUST watch for all!!
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Re: TRS, Again

Post by BobbyFord »

FORDification wrote:
BobbyFord wrote:Negative on the Distovac.
Mine looks like the diagram here
http://www.fordification.com/library/ma ... temId=6331
Anyhow I was curious because OldRedFord said his had the module and speed sensor. Mine must just have been a later version.
...or he actually had the Distovac instead of the TRS. ;)

That is probably correct. Thanks, I needed to put my head at ease :thup:
Anyway I'm going to re-route and use the blue TRS wire coming through the firewall, with an inline fuse, to power my MSD box.
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Re: TRS, Again

Post by OldRedFord »

Bobby, that was on the 70 parts truck. I did not check out how the system was set up at all. What version it was I have not a clue.
Tim

1972 F350 flatbed drw c6/390
1967 F600 project truck
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Re: TRS, Again

Post by FORDification »

OldRedFord wrote:Bobby, that was on the 70 parts truck. I did not check out how the system was set up at all. What version it was I have not a clue.
If it was on a '70, then it was a Distovac setup, and not a TRS.
____| \__
-O-----O- Keith
'67 F-100 2WD SWB ~ '69 F-100 4WD SWB w/7" chop ~ 1975 F-250 Ranger XLT Supercab Camper Special
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My '67 restoration video
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Re: TRS, Again

Post by OldRedFord »

Did all the trucks have one or the other system, or was it a state to state thing?
Tim

1972 F350 flatbed drw c6/390
1967 F600 project truck
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BobbyFord
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Re: TRS, Again

Post by BobbyFord »

OldRedFord wrote:Did all the trucks have one or the other system, or was it a state to state thing?
I do not believe they all had it. Mine was the first I've ever seen.
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Re: TRS, Again

Post by FORDification »

According to the '70 Distovac brochure I linked to above, it was "standard equipment on some 1970 cars, Rancheros, Econolines and F100 trucks equipped with an automatic transmission and a 240 1V, 302 2V or 390 2V or 351 4V Cleveland engine."

As to what determined whether it was used on a vehicle or not, I don't know....but I'd be willing to bet that California trucks were the 'lucky' recipients. ;)
____| \__
-O-----O- Keith
'67 F-100 2WD SWB ~ '69 F-100 4WD SWB w/7" chop ~ 1975 F-250 Ranger XLT Supercab Camper Special
ImageImageImage
My '67 restoration video
-> Posting and you! <-a MUST watch for all!!
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Re: TRS, Again

Post by FORDification »

According to the '72 shop manual, the TRS "will be used on all 1972 engines listed in Fig. 4". (shown below):

Image
____| \__
-O-----O- Keith
'67 F-100 2WD SWB ~ '69 F-100 4WD SWB w/7" chop ~ 1975 F-250 Ranger XLT Supercab Camper Special
ImageImageImage
My '67 restoration video
-> Posting and you! <-a MUST watch for all!!
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Re: TRS, Again

Post by BobbyFord »

It's strange that I haven't seen any before, but then again, I wasn't really aware of TRS.
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Re: TRS, Again

Post by fordman »

the only one on these trucks i have ever seen is the 72 F100 i parted out last year. and not all o fit was even there. i think the wiring and the door switch was all that was left on that truck.
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