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Originally posted by Activ8 View PostReceived an email to day from Bosch with two schematics of the Diesel pumps.
AJT & ACV : Bosch pn# - 0460 415 983 / Pump Type: VE5/11E1750L714-1
VOLVO : Bosch pn# - 0460 415 990 / Pump Type : VE5/11E2300L649
VE is the pump type
5 is the number of ports
11 is the size , so 11mm
The next numbers I don't know, could it be 1750l & 2300l pumping capacity?
The last 3 digits relate to the camplate. AXG/AHY same ACV pn# but ends 777?
Did a quick Google search on the pump type. There's about 18, 5 pot pumps so all start VE5/11E with 1750L / 1800L / 1850L / 2000L / 2300L.....
Reg any ideas?
Compared the schematics and the Volvo uses a different ;
Hydraulic Head,
Camplate,
Positioner,
Control Valve,
Solenoid Operated Valve,
then apart from a few gaskets and mounting plates there are no other differences.Originally posted by regcheeseman View PostI recall the 1750 is an rpm, that I thought was related to the governor actuation but that wouldn't relate to the TDI pump so blame internet misinformation - could relate to dynamic timing?
L is Left as it is a left handed pump - the main shaft rotates counter-clockwise.
The next three digits I cannot remember but I have a guide at home, will take a look later
Want to send you a pump, 12mm head and injectors for refurbing and setting up. Still OK with that? But which one?
The Volvo pump maps are better at first view is it relative to the model code.....
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From the other forum I found this;
higgy
Lord of the T4sJoin:*Oct 2007
Feb 18, 2013*· #1
Diesel pump question
Hi my diesel pump is needing changed and the part no is Bosch 0460 415 983 I can get another pump which the part no is the Same apart from the last 3 digits which are 990 my question is Will it be the same pump.
algo
Van JediJoin:*Aug 2012
Feb 18, 2013*· #3
Re: Diesel pump question
those last three digits are the bosch series number and determine the voltage map from the ECU (as I'm sure you know the 1 means 11mm rotor, and 5 is the number of cylinders). The 983 pump was used on the ACV engines and the 990 on the 140bhp volvo 2.5tdi - it should be ok - if anything the 990 series is a better pump (better camplate and dynamic advance) - like the 985 series for the AXG/AHY engines.
In general these voltage maps are pretty similar but there are a few difficult ones.
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Originally posted by Activ8 View PostI understand the 1750 & 2300 numbers to be the pump's maximum rated power output in rpm. [half crank speeds].
Could conceivably be ultimate limitation figures at half engine speed but that's saying the above pumps fall flat at 3500 rpm and 4600 rpm.
Regardless, this doesn't relate in any way to the mechanics of a TDi pump, got any more details????
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Originally posted by regcheeseman View PostAs already suggested - mechanical governor actuator figures. Always believed by me to be the start of fuel limitation, measured in crank rpm.
Could conceivably be ultimate limitation figures at half engine speed but that's saying the above pumps fall flat at 3500 rpm and 4600 rpm.
Regardless, this doesn't relate in any way to the mechanics of a TDi pump, got any more details????
No reference before about this - must of missed it - you're the man who actually might know. [emoji6]
Irrelevant really, which pump should I send down. ACV or Volvo?
The Volvo maps run to 80mg/s standard unlike the T4's 51mg/s.... oh and that 0.15 difference in the cam profile apparently relates to 5-7° at the crank (think I remembered this correctly) so may allow for a wider injection window but I need to properly pull the Volvo injection & timing maps apart. Shadowmaker ran 380bhp (?) in his wife's Volvo 2.5tdi.
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Originally posted by regcheeseman View PostSend both pumps down - I'm intrigued....
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