BW 1356 gurus needed
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From: CT
BW 1356 gurus needed
Trying to solve a problem here that revolves around the BW1356. Say i have a 93 F350 4x4, with the BW1356 Tcase. On these trucks where is the VSS mounted. I'm pretty sure the D60 or D70 did not come with a tone ring like the ford 8.8 has. I figured it would be located in the output shaft housing of the tcase. Any information to shed some light on this is greatly appreciated. thanks
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From: Memphis, TN
BW 1356 gurus needed
The Sterling 10.25" has the tone ring and ABS sensor on top of the diff, so I'd expect to see it on any axle from '87-up, and especially on '92-96, because the PSOM runs off it.
Post Fiend
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From: Topsfield, MA
BW 1356 gurus needed
Its a metal ring attached behind the ring gear. It has many teeth on it, there is a sensor mounted above it that counts it's rotations and gives you a reading on your speedometer/odometer module (if it's 92-96) as well as other functions (like ABS for 87-96).
Post Fiend
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From: Topsfield, MA
BW 1356 gurus needed
I think there was one for the electronic shift version so it knew what speed you were traveling at for engagement but I could be incorrect. I'd check my dealership manual but I don't have it around.
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From: CT
BW 1356 gurus needed
I read somewhere on the internet that some guy did this swap on his bronco, but i could not find an adress to email him about it. I know it's gotta be out there, i thought all F350 with the larger D70 has the sensor in the Tcase, i'm not quite sure tho. I'll try going to a different ford dealership today.
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Post Fiend
Joined: Nov 2002
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From: Memphis, TN
BW 1356 gurus needed
The OSS on the electrically-shifted 1356 was only used by the shift computer - never for the transmission. '87-92 1356s had a VSS in the speedometer hole that was used for the cruise and the E4OD.
What exactly are you trying to do with the t-case or truck? Did you look for the ABS sensor on the diff?
What exactly are you trying to do with the t-case or truck? Did you look for the ABS sensor on the diff?
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From: CT
BW 1356 gurus needed
Well, i put a 9" in my 93 F150 5spd, which originally had the 8.8 rear axle. That axle having the VSS/ABS located on it. The 9" on the other hand has no provisions for such. I had read somewhere that a guy that swaped a 9" on his bronco used the output shaft housing that had a VSS in it.
Could the '87 - '92 BW1356 be used for the speedometer in my 93 F150?
Could the '87 - '92 BW1356 be used for the speedometer in my 93 F150?
Post Fiend
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From: Memphis, TN
BW 1356 gurus needed
That guy built his own bracket to hold the original ABS sensor and fabricated a tone ring specific to his rear axle ratio to produce the appropriate number of pulses per mile.
You can't use the '87-92 cruise VSS to run a '92-96 PSOM because it only puts out 6 pulses per speedo cable rev and you need 108 per rear tire rev. Read this.
You can't use the '87-92 cruise VSS to run a '92-96 PSOM because it only puts out 6 pulses per speedo cable rev and you need 108 per rear tire rev. Read this.
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From: CT
BW 1356 gurus needed
No no, this other guy actually used a different output shaft housing. I heard about the guy that fabbed up his own bracket.
I think the guys name was E.Long, saw it on superford.com, When i last spoke with him he said he sold the bronco and doesn't remeber what is needed to get it working.
is ther a way to fake the computer out, any way to multiply the output pulses to achieve the 108 needed
I think the guys name was E.Long, saw it on superford.com, When i last spoke with him he said he sold the bronco and doesn't remeber what is needed to get it working.
is ther a way to fake the computer out, any way to multiply the output pulses to achieve the 108 needed
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From: CT
BW 1356 gurus needed
I tried out some math not sure if it will work but here goes.
How i see it, 92-96 PSOM is looking to see how long it takes for the 108 teath to pass in conjunction with the tire revs/mile to calculate the speed.
my 32" tires produce 630.25 revs/mile
I have 4.56 gears
If i were to use the 87-92 cruise VSS which produces 6 pulses per rotation.
Because the driveshaft must rotate 4.56 times faster to achieve 1 rotation of the tire we can say that it would be like having a tone ring with approx. 27 teeth.
Does the PSOM care that there isn't enough or will it still look for the 108 teeth?
ConvConst = RevsperMile x ToneRingTeeth / 8000
CC = 630.25 x 27/8000
CC = 2.12
okay, now i see why it won't work....
How i see it, 92-96 PSOM is looking to see how long it takes for the 108 teath to pass in conjunction with the tire revs/mile to calculate the speed.
my 32" tires produce 630.25 revs/mile
I have 4.56 gears
If i were to use the 87-92 cruise VSS which produces 6 pulses per rotation.
Because the driveshaft must rotate 4.56 times faster to achieve 1 rotation of the tire we can say that it would be like having a tone ring with approx. 27 teeth.
Does the PSOM care that there isn't enough or will it still look for the 108 teeth?
ConvConst = RevsperMile x ToneRingTeeth / 8000
CC = 630.25 x 27/8000
CC = 2.12
okay, now i see why it won't work....
gotta try to figure something out