dollythelw Posted March 17, 2006 Share Posted March 17, 2006 just a quickie Has anyone got the figures to hand for a Land Rover PAS pump, cc's/rev and system operating pressure Cheers Jez Quote Link to comment Share on other sites More sharing options...
Tobias Posted March 17, 2006 Share Posted March 17, 2006 just a quickie Has anyone got the figures to hand for a Land Rover PAS pump, cc's/rev and system operating pressure Cheers Jez As a matter of fact, I do! A friend at a reman facility made some tests for me on two different RRC circa 1985 pumps. Straight out of the car, one at about 240 000km and one unknown mileage: l/min@465rpm 4.0 and 2.1 respectively l/min@1500rpm 7.7 and 7.6 respectively pressure@1500rpm 56.0 and 55.3 Bar respectively After that the better one was boosted to 92 Bars and is awaiting assembly into the portal RRC once I get it running. Should help with turning the 38.5's... T Quote Link to comment Share on other sites More sharing options...
dollythelw Posted March 17, 2006 Author Share Posted March 17, 2006 As a matter of fact, I do!A friend at a reman facility made some tests for me on two different RRC circa 1985 pumps. Straight out of the car, one at about 240 000km and one unknown mileage: l/min@465rpm 4.0 and 2.1 respectively l/min@1500rpm 7.7 and 7.6 respectively pressure@1500rpm 56.0 and 55.3 Bar respectively After that the better one was boosted to 92 Bars and is awaiting assembly into the portal RRC once I get it running. Should help with turning the 38.5's... T Tak Sor Tobias, I was hoping to hit 11.7 l/min at around 1100 rpm and 100bar but I think Im going to have to use a 12cc/rev ZF pump to get the flow and pressure - do you tweak the PRV spring on the Rover pump to up the pressure? My ram needs 411cc's at 100bar to cycle fully so the ZF would give a stroke time of 1.75 seconds (which I can live with), it would also give a force of 1950Kgs (methinks plenty! ) Thanks for the figures!! Cheers Jez Quote Link to comment Share on other sites More sharing options...
BogMonster Posted March 17, 2006 Share Posted March 17, 2006 Just a thought but the figures you are looking for are about what is quoted for the "ZF74" pump supplied for Milemarkers... Quote Link to comment Share on other sites More sharing options...
dollythelw Posted March 17, 2006 Author Share Posted March 17, 2006 Just a thought but the figures you are looking for are about what is quoted for the "ZF74" pump supplied for Milemarkers... Spot on that man Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted March 17, 2006 Share Posted March 17, 2006 Does the ZF74 have a PRV? Would this be a cheap Milemarker tune (with a different pulley)? Quote Link to comment Share on other sites More sharing options...
Steve Hiatt Posted March 17, 2006 Share Posted March 17, 2006 Has anyone stuck a pressure gauge on the Pug or Astra electric power steering pumps? Quote Link to comment Share on other sites More sharing options...
dollythelw Posted March 17, 2006 Author Share Posted March 17, 2006 ufortunately the ZF74 has a max output of 12 l/min so underdriving it won't gain you anything On a dedicated MM ZF instal I've heard of MR2 PAS pumps being used as flow boosters, the alternative is belting up a higher flow pump or using two ZFs in tandem, Tweeking the PRV on the ZF will only increase potential system pressure and therefore winchpower - it wont affect the flow - soz Turbocharger Steve - not done it but if you can find the pump type Im sure the figures could be tracked down somehow - I'd be surpised if they were more then 7cc/rev at 50-60bar though Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted March 17, 2006 Share Posted March 17, 2006 Sorry - I was hoping to up the pressure and then trade that for displacement by using a higher speed. If it won't drive the gallons any quicker, no matter. It doesn't need any more line tension for what I'm doing, but a little more haste would be handy. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted March 17, 2006 Author Share Posted March 17, 2006 bin the pump (strangely Im in the market for one ) and run a higher volume one? or twin pump it? Quote Link to comment Share on other sites More sharing options...
BogMonster Posted March 18, 2006 Share Posted March 18, 2006 I have a load of bumph somebody sent me, he had done a twin ZF74 setup, which doubled the speed for not a huge amount of work or cost. Quite a neat idea too. I meant to do it as a post for the tech archive (he said I could) but never got a round tuit... one of these days. It's nearly winter so when it gets too cold to play with my boat I might do it Quote Link to comment Share on other sites More sharing options...
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