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Post by enigmas on Feb 12, 2014 10:22:11 GMT
Yes, it does come out in a different place John. Some background info. My car still runs the Mk3 gearbox (still fitted with the rear pump) but with the BW40 internals. It has the larger 11" torque convertor, the Ford oil pan (slightly deeper)and also retains the MK3 separate oil cooler. The vehicle has used this arrangement for the last 20 years since I originally cobbled it together. Since the gearbox backups to a P76 V8 the filler tube was rerouted to a central position behind the V of the engine and does not exit to the side like the tube does on the 6 cyl MK3 or the P5B. (The engine actually sits much lower than the V8 P5B) The tube hasn't been shortened just heated and bent with an oxy/acetylene torch  . I may have shortened the dipstick but I doubt removing 9". Interestingly my P76 manual states that the fill from empty is 7 litres of ATF and the Rover Mk3 is 8 litres. Perhaps the easiest solution is a complete drain (let it pump out in park) and measure the expelled quantity then add the difference. From this point I can adjust the dipstick. Still 9 7/8" is a lot of shortfall.  If you don't mind me asking....what length is the P5B dipstick John. |
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Post by norvin on Feb 12, 2014 15:31:09 GMT
I have just been out and checked my BW 35 dipstick on my P5B and it is 30" inches from beneath the cap, I am still not sure if I have the correct dipstick for my car as it has no hot or cold marked on it just high and low!  |
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Post by johnwp5bcoupe on Feb 12, 2014 16:36:21 GMT
Yes, it does come out in a different place John. Some background info. My car still runs the Mk3 gearbox (still fitted with the rear pump) but with the BW40 internals. It has the larger 11" torque convertor, the Ford oil pan (slightly deeper)and also retains the MK3 separate oil cooler. The vehicle has used this arrangement for the last 20 years since I originally cobbled it together. Since the gearbox backups to a P76 V8 the filler tube was rerouted to a central position behind the V of the engine and does not exit to the side like the tube does on the 6 cyl MK3 or the P5B. (The engine actually sits much lower than the V8 P5B) The tube hasn't been shortened just heated and bent with an oxy/acetylene torch . I may have shortened the dipstick but I doubt removing 9". Interestingly my P76 manual states that the fill from empty is 7 litres of ATF and the Rover Mk3 is 8 litres. Perhaps the easiest solution is a complete drain (let it pump out in park) and measure the expelled quantity then add the difference. From this point I can adjust the dipstick. Still 9 7/8" is a lot of shortfall. If you don't mind me asking....what length is the P5B dipstick John. Hi vince from the underside of the cap to the end 30 1/2"  |
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Post by norvin on Feb 12, 2014 16:55:12 GMT
John you say your dipstick 30 1/2" inches is that marked with Hot and Cold or is it like the one in my post?
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Post by johnwp5bcoupe on Feb 12, 2014 19:08:24 GMT
John you say your dipstick 30 1/2" inches is that marked with Hot and Cold or is it like the one in my post? Hi Dean no not the same I have two notches on each side Cold high and low and Hot high and low. |
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Post by Deleted on Feb 12, 2014 19:54:34 GMT
John you say your dipstick 30 1/2" inches is that marked with Hot and Cold or is it like the one in my post? Hi Dean no not the same I have two notches on each side Cold high and low and Hot high and low. I have the same dipstick as Norvin, just H & L. It has a cream/off-white cap as previously mentioned. I know, beyond all doubt, that this is the original dipstick with the original BW35 gearbox on my 1970 build P5b. |
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Post by johnwp5bcoupe on Feb 12, 2014 20:29:34 GMT
Hi Dean no not the same I have two notches on each side Cold high and low and Hot high and low. I have the same dipstick as Norvin, just H & L. It has a cream/off-white cap as previously mentioned. I know, beyond all doubt, that this is the original dipstick with the original BW35 gearbox on my 1970 build P5b. How long is you dipstick The box in mine is the same one when I bought the car in 73 not to say it is the original one! Perhaps we can have a few more dipsticks inspected for type and length  |
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Post by Phil Nottingham on Feb 12, 2014 21:21:22 GMT
Later dipsticks were not marked Hot/Cold
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Post by enigmas on Feb 12, 2014 21:30:01 GMT
Yes, there is a Monty Pythonesque element to this investigation, but I suppose the dipsticks can be mixed up! There seems to be considerable variation in length. No John, I still have the original 2 barrel downdraft carburettor fitted...I do have 2 alternative manifolds waiting in the wings but I can't decide which way to go. |
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Post by Deleted on Feb 12, 2014 22:28:00 GMT
I have the same dipstick as Norvin, just H & L. It has a cream/off-white cap as previously mentioned. I know, beyond all doubt, that this is the original dipstick with the original BW35 gearbox on my 1970 build P5b. How long is you dipstick The box in mine is the same one when I bought the car in 73 not to say it is the original one! Perhaps we can have a few more dipsticks inspected for type and length John, too late, wet, windy and dark to check! Anyone else have the cream type cap?! I'm 100% certain it's the original and there's no reason why it shouldn't be. |
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Post by stantondavies on Feb 13, 2014 0:13:02 GMT
The cap on my MkIII is cream coloured and there are four level marks, high and low both hot and cold, as indicated earlier. I had the length of the dipstick independently verified after I measured it and I have no reason to doubt that it is not the original one.
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Post by johnwp5bcoupe on Feb 13, 2014 6:13:51 GMT
The part numbers for the MK3 filler tube and dipstick are different to the P5b so that explains part of it  My coupe is early 69 so that may be the difference between the two others in the post? it's Rover who the heck knows things were just changed  |
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Post by enigmas on Jun 15, 2015 8:19:46 GMT
I've resurrected this topic as I don't believe any hard and fast conclusions were reached with regard to the varying lengths of the BW35 trans dipsticks or checking fluid levels accurately or reliably. I believe a better method would be to measure how far the dipstick sits into the transmission pan or descents from the mounting face of the pan. Obviously this can only be done with the ATF drained. A straight edge across the pan face or referenced from the pan face to the end of the dipstick would clarify this once and for all and also allow correction for inapproprate length dipsticks across the range of BW35s. It would be very easy to cobble up a simple side elevation drawing to provide this info, which can be cut and pasted by various contributors and so resolve this conundrum
What do you guys think?
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Post by norvin on Jun 15, 2015 14:48:03 GMT
I think it could be a good idea if we could come up with the correct length dipstick as I have never believed my dipstick is the correct one for my P5B. Most seem to have the hot and cold stamped on them and mine has not its just high and low.
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Post by enigmas on Jun 15, 2015 15:05:57 GMT
If the end position (depth) of the dipstick is known from the face edge of the transmission oil pan surface, then any dipstick could be properly adjusted (lengthened or shortened) to this measurement, as it would be the same across all BW35s.
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Post by Phil Nottingham on Jun 15, 2015 21:41:31 GMT
I have a selection of the dipsticks with the different markings and I recall them being all the same length and the makings not all being in the same place. I will look at them again shortly to confirm this
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Post by norvin on Jun 25, 2015 9:19:02 GMT
I've resurrected this topic as I don't believe any hard and fast conclusions were reached with regard to the varying lengths of the BW35 trans dipsticks or checking fluid levels accurately or reliably. I believe a better method would be to measure how far the dipstick sits into the transmission pan or descents from the mounting face of the pan. Obviously this can only be done with the ATF drained. A straight edge across the pan face or referenced from the pan face to the end of the dipstick would clarify this once and for all and also allow correction for inapproprate length dipsticks across the range of BW35s. It would be very easy to cobble up a simple side elevation drawing to provide this info, which can be cut and pasted by various contributors and so resolve this conundrum What do you guys think? Its a shame that this topic has not generated more interest. |
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Post by enigmas on Jun 25, 2015 11:59:21 GMT
Norvin how busy are you? It's really just a matter of 'someone' picking up the ball! I'm in the process of seemingly rebuilding 3 cars at the moment...so have enough problem solving on my plate for the moment. If you want to know the answer, you can either visit a car wrecker who has some BW35s in stock (the make of car doesn't matter) tell him you're interested in a good unit but you want to look within the sump (a reasonable request) Then measure where the dipstick ends from the mating surface of the trans pan. That's it. They should all be the same even though the dipstick lengths may vary. You could also approach a friendly trans specialist (Harvey perhaps?) and ask if you could check these details. There's no magic involved...just someone picking up the ball and taking the task on rather than waiting for someone else to do it. |
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Post by norvin on Jun 25, 2015 14:01:56 GMT
Norvin how busy are you? It's really just a matter of 'someone' picking up the ball! I'm in the process of seemingly rebuilding 3 cars at the moment...so have enough problem solving on my plate for the moment. If you want to know the answer, you can either visit a car wrecker who has some BW35s in stock (the make of car doesn't matter) tell him you're interested in a good unit but you want to look within the sump (a reasonable request) Then measure where the dipstick ends from the mating surface of the trans pan. That's it. They should all be the same even though the dipstick lengths may vary. You could also approach a friendly trans specialist (Harvey perhaps?) and ask if you could check these details. There's no magic involved...just someone picking up the ball and taking the task on rather than waiting for someone else to do it. Thanks that is something to think about if I ever get any spare time. |
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. I may have shortened the dipstick but I doubt removing 9".
