dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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Jul 11, 2019 20:18:19 GMT
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I'm looking at deleting the mechanical cam driven vacuum pump on my VW t4 2.5tdi. Unlike most other cam driven pumps, which are rotary driven,these are drivenby a pushrod from the cam. Due to the engine being canted forwards, they have a tendency tofill with oil and then make a tappety racket.
So I want to delete it and cap off the hole in the block...
Which means I need to find an alternative. I thought about using a rotary one and adapting it to run off a pulley on the ancilliary belt but then it will need an oil feed and return figuring out. Ive come across the jaguar x type one on ebay that is electric. Can anybody shed any light on them? Are they too loud?
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Midas
Part of things
Posts: 505
Club RR Member Number: 14
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Jul 11, 2019 23:29:22 GMT
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Can’t answer your question right now but I have just bought one to use on my rear engined kit car.
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Last Edit: Jul 11, 2019 23:30:24 GMT by Midas
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wc
Part of things
Posts: 45
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A lot of earlier diesel cars and pickups had a vacuum pump on the rear of the alternator driven by the armature which supplied the vacuum for the brake booster. Maybe an option?
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gazzol
Part of things
Posts: 11
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Jul 16, 2019 20:48:16 GMT
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A lot of earlier diesel cars and pickups had a vacuum pump on the rear of the alternator driven by the armature which supplied the vacuum for the brake booster. Maybe an option? You are quite right but they still needed an oil feed and a return to the sump. An alternative if you don't want to go electric is a vac pump off an early Peugeot engined ldv 400, try ebay for ldv vac pump. Its a mechanical pump but doesn't need an oil feed/return. Having said that a lot of modern stuff uses an electric pump and a vacuum sensor T'd into the line. When the vacuum starts to be depleted the pump kicks in, it also means the pump can be hidden out of sight.
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Last Edit: Jul 16, 2019 20:49:58 GMT by gazzol
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Just check the vac pump was the sole source of vacuum for the Jag, some cars use them to top up deficiencies in manifold sourced or engine driven pump vacuum, as such it may not have enough flow to work as a stand alone pump.
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I don't know about the noise levels but they are rubber mounted and they couldn't be that bad or they wouldn't have fitted them on the jag I'm going to use one on one of my builds They cross reference with Mercedes as well they used them on the Superchaged cars
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1992 240 Volvo T8 1955 Cadillac 1994 BMW E34 M5 (now sold ) 1999 BMW E36 sport touring x2 1967 Hillman imp Californian "rally spec" 1971 VW bay window (work in progress) 1999 Mazda 323F 1987 Jaguar XJ12 All current
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dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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Aug 18, 2019 21:36:59 GMT
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I'm still keen to try this and have found some quite good youtube vids detailing the quite simple sytems using an inline pressure senser to activate the pump. It would seem that a lot of cars have them fitted even audis, mercs and as mentioned big heavy range rovers. Yes they are mostly used as an assistor pump but they can be used as a standalonr system. And they are fitted to all elevtric cars. Some of which are still quite heavy.
I'm just looking at various sources. Trying to find the quietest one I can. It would seem that rotary pumps are quieter than than the piston type.
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Colonelk
Posted a lot
Posts: 3,740
Club RR Member Number: 83
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Aug 21, 2019 16:25:12 GMT
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I've got an x-type one on its original rubber mount in my Carlton, its not the quietest thing in the world but with the engine running (which is pretty loud) you can't here it.
Yet to take it out on the road to see how it performs in real life.
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Aug 21, 2019 18:23:32 GMT
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I use one on my Humber Hawk. It's in the boot along with the servo. Works well and I only hear it when I turn the ignition on. I used an inline vacuum switch. It only starts when I brake so usage is not great (I don't do much town driving).
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Proton Jumbuck-deceased :-( 2005 Kia Sorento the parts hauling heap V8 Humber Hawk 1948 Standard12 pickup 1953 Pop build (wifey's BIVA build).
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dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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Aug 22, 2019 17:57:33 GMT
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Thanks guys.
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Aug 22, 2019 18:38:10 GMT
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that pump is probably at least 20 years old, why not just fit another that'll last 20 years again?
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dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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Aug 22, 2019 18:53:10 GMT
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Who me? Personally I just don't like the noisy clattery pumps fitted on the T4s. Especially as they are camshaft driven. I couldnt care less about the pump dying (although they arent rebuildable and new ones are £250) What bothers me is the potential for it to hydrolock full of oil and take the cam and engine out.
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ChasR
RR Helper
motivation
Posts: 10,188
Club RR Member Number: 170
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Who me? Personally I just don't like the noisy clattery pumps fitted on the T4s. Especially as they are camshaft driven. I couldnt care less about the pump dying (although they arent rebuildable and new ones are £250) What bothers me is the potential for it to hydrolock full of oil and take the cam and engine out. Or compromise your brakes. It's nice to know you don't care about that. Where do you live again? Remind me not to drive near your area .
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dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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Aug 24, 2019 23:53:05 GMT
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Who me? Personally I just don't like the noisy clattery pumps fitted on the T4s. Especially as they are camshaft driven. I couldnt care less about the pump dying (although they arent rebuildable and new ones are £250) What bothers me is the potential for it to hydrolock full of oil and take the cam and engine out. Or compromise your brakes. It's nice to know you don't care about that. Where do you live again? Remind me not to drive near your area . Not sure I understand you bud. I'm looking for thr best possible brake system. The curse word mechanical pump system on this is a 22 yr old system. Running at an angle its not supposed to run at. Hence it fills with oil. But a 2 yr old, 2 tonne Range Rover sport uses an electric pump to help anchor it up. If its good enough for them, its good enough for me👍
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