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Thread: blank off 300tdi vacuum pump

  1. 15th December 2015, 09:26 PM #1
    staplehead01 Guest

    blank off 300tdi vacuum pump

    Hi i have a range rover with a 300tdi conversion and want to know if I can blank off my vacuum pump because it is not being used because i have a electric pump for my brakes
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  2. 15th December 2015, 09:29 PM #2
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    loanrangie
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    Yes of course , what pump are you using ?

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  3. 15th December 2015, 09:40 PM #3
    staplehead01 Guest
    I think its the original pump from when it was a v8...can you just buy a blanking plate cause i seem to find any for sale
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  4. 15th December 2015, 10:17 PM #4
    slug_burner
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    Make a cover using the gasket as a template
    Quote Originally Posted by benji View Post
    ........

    Maybe we're expecting too much out of what really is a smallish motor allready pushing 2 tonnes. Just because it's a v8 doesn't mean it's powerfull.

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  5. 16th December 2015, 04:05 AM #5
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    Like slug suggests. We have done few 300tdi into abs classic rrc and that is what i do. Interesting side issue is that one of the reasons these engines go so well in this application is the reduction in rotating effort required for the camshaft after removing the vac pump. That sucker really drags some power from the engine i reckon. Have you seen the ramp angle on its drive lobes ???!!! ����

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  6. 16th December 2015, 08:57 PM #6
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    FWIW the MWM/International 2.8 uses a blanking plate as it uses a Brazilian Bosch alternator with a vacuum pump.
    As suggested, just make one up, and JC's observation is interesting.
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  7. 17th December 2015, 09:17 AM #7
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    One thing for sure you should notice a fair drop in decibels too.
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  8. 17th December 2015, 10:32 AM #8
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    Is converting a 300TDi deefer to a V8 electric vacuum pump arrangement something that is relatively straight forward?

    I can only find limited info online about electric vacuum pump conversions for 300TDis. Seems some people have done it but the actual details of the conversion are thin on the ground.
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  9. 17th December 2015, 12:19 PM #9
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    What ever pump you use make sure it can pull 19-22"
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  10. 17th December 2015, 12:44 PM #10
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    Quote Originally Posted by steane View Post
    Is converting a 300TDi deefer to a V8 electric vacuum pump arrangement something that is relatively straight forward?

    I can only find limited info online about electric vacuum pump conversions for 300TDis. Seems some people have done it but the actual details of the conversion are thin on the ground.
    I'm not sure what you mean by a "V8 electric vacuum pump arrangement", the later Rangie Classics use a hydraulic pressure pump for their peculiar Wabco ABS system. The V8 Discos all use conventional brake boosters running off manifold vacuum, and some have Bosch ABS units too.

    Really the amount of power a 300TDi vacuum pump took would be trivial, you're better off putting 2psi in all the tyres than stuffing around with an electric vacuum pump! Once a mechanical vacuum pump has achieved full vacuum the diaphragm would be stroking very little compared to full flow.

    One of my mates with a 300TDi powered RRC uses his vacuum pump to run an aftermarket cruise control, the other uses his for vacuum trailer brakes. Neither suffers poor economy.
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