You are right in saying that air compresses at a different rate to oil, air is very compressable vs oil, but if you pressurise a line with air and oil in it the air will compress more than the oil, but the whole line will have the same pressure in it. A good analogy is if you sit a 1kg weight on a set of scales it will read the same as a 1kg weight on a set of scales with a soft spring in between them, the only difference is the weight will sink more.
Sunday, November 03, 2002, 11:15:13 PM, you wrote: RW> Richard. RW> I was under the ussumtion by what I had read that, air, just like in brake lines compresses at a different rate to the oil. RW> Maybee I am wrong, I have been known to be at times. :O) As I was just recently when trying to work out how a electric sender worked. RW> Thanks Chris for clearing that up for me. RW> I think when it comes to a engine, and the fitting of warning guages, it is always advisable not to go buy the cheeper version. RW> Some thing the cheeper will do but not when it comes to your engine and the diagnosis of faults. RW> After having a oil pressure releif valve stick on my old orange sedan while idoling through the carpark at work, blowing the oil filter and leaking oil all over the carpark. RW> I went to the auto sparky, and had him play with the under dash wiring, fitting resisters and the like so I could hook up a 12 volt hallogen downlight behind a red screen bolted on the steering RW> shroud, just incase it happened again. RW> I wouldn't of liked this to happen while doing 100km/h down the freeway. RW> The engine woulda died by the time I spotted the idiot light. RW> Luckily I was only idoling when it happened the first time and I heard the oil spraying in the engine bay. RW> Later. RW> Rick White. RW> --- "Richard Webb" <[EMAIL PROTECTED]> wrote: >>just read this reply too :) >> >>Your probably right Rick, I havent had heaps of experience with them... I >>heard the cheap electronic ones werent very accurate. >> >>If you dont bleed the manual ones what would happen? wouldnt the pressure >>just get transfered through the air? I guess the reading woudl be alot >>lower? >> >>Rich >>----- Original Message ----- >>From: "Rick White" <[EMAIL PROTECTED]> >>To: <[EMAIL PROTECTED]> >>Sent: Sunday, November 03, 2002 2:48 AM >>Subject: Re: smaller oil filter >> >> >>> Mark. >>> You can either buy, electric oil pressure guages, or manual oil pressure >>guages. >>> The elecric one is the easiest to hook up, as it is just a wire hook up to >>the guage from the sender unit, a earth from some where under the dash and >>if you want lighting you will need to hook into the lighting circuit. >>> The manual one works by fitting a small oil line to the guage, I >>personally think these are nasty. >>> You have to blead the oil line so there is no air present in the line, if >>you don't get all the air out they will work as good as a set of brakes with >>air in the lines. >>> Hense I think they are nasty. >>> If you want to have both the idiot light and a guage hooked up you need to >>buy a T-Piece that screws into the block, then you only need to screw in >>both senders and you will have both working. >>> I would spend the little extra and get a electric sender though. >>> That is just my preference. >>> Later. >>> Rick White. >>> >>> >>> --- Mark Firman <[EMAIL PROTECTED]> wrote: >>> >Sorry, i don't really understand what you are trying to explain Richard, >>but it does sound like what i want :) >>> >Can anyone describe this method or any other easy/cheap way to hook up an >>oil pressure guage in a 1600?? >>> >Thanks heaps, >>> >mark >>> >--- "Richard Webb" <[EMAIL PROTECTED]> wrote: >>> >>I'd put a manual guage on, which requires pipe from the engine to the >>car. >>> >>You also need a T piece if you want the old oil pressure light to work, >>> >>which is recomended. Aparently the manual guages are good cos if the >>engine >>> >>is pinging, you can hear it on the glass easily. Im not sure as I havent >>got >>> >>one yet. I will invest soon. >>> >> >>> >>Rich >>> >>----- Original Message ----- >>> >>From: "Mark Firman" <[EMAIL PROTECTED]> >>> >>To: <[EMAIL PROTECTED]> >>> >>Sent: Saturday, November 02, 2002 4:57 PM >>> >>Subject: Re: smaller oil filter >>> >> >>> >> >>> >>> Just on the topic of oil filters and oil pressure switches, >>> >>> can you hook up a oil pressure guage to the standard oil switch (small >>> >>ones)?? >>> >>> Or do you need a different pressure switch that isn't just an 'on' or >>> >>'off' switch like for the warning light? >>> >>> If you do need a different one, where could i get one from?? and how >>much >>> >>would it be?? >>> >>> Thanks >>> >>> >>> >>> --- Rick White <[EMAIL PROTECTED]> wrote: >>> >>> >Hmmm. >>> >>> >I have a old Ryco parts manual somewhere that specifies Z37 for the >>SSS >>> >>510. >>> >>> >Also a oil pressure switch, for the idiot light is tiny. >>> >>> >The oil guage on My SSS is HUGE and that is a under statement. >>> >>> >It was the first thing I noticed when I went to see her for the first >>> >>time, which is the day I bought it. >>> >>> >I thought silly buggars bought the wrong oil filter and pressure >>switch. >>> >>> >The oil filter was the last one the bloke who I bought it of had, and >>you >>> >>could just work out the DATSUN logo on it. I was amased it still had a >>> >>factory oil filter on it. >>> >>> >About 6 months later the oil pressure sender broke down, I went to >>Nissan >>> >>and they got me what they said was the last genuine pressure switch in >>> >>existence, it was even packaged in a Datsun box. >>> >>> >Just remember the old style oil pressure senders were KPA or some >>thing >>> >>not pounds or what ever the new guages are. >>> >>> >You deffiantly could not get the plain old oil filter that I had >>fitted >>> >>on my wagon at the time, it would have to be dented to get around the >>> >>pressure switch. >>> >>> >Hense the long time searching for a Ryco parts book that actually had >>the >>> >>SSS listed seperately with Z37 listed as the oil filter. >>> >>> >If you look at the standard oil filter and see the rubber O-Ring the >>Z37 >>> >>is just a tad wider than that O-Ring and is the same length. >>> >>> >Later. >>> >>> >Rick White. >>> >>> > >>> >>> >--- "maldat" <[EMAIL PROTECTED]> wrote: >>> >>> >>Z101 is the oil filter >>> >>> >>Bigger is better >>> >>> >>the oil switchs are all the same sss or not or L16-L20B >>> >>> >> >>> >>> >>Malcolm >>> >>> >>----- Original Message ----- >>> >>> >>From: "Rick White" <[EMAIL PROTECTED]> >>> >>> >>To: <[EMAIL PROTECTED]> >>> >>> >>Sent: Saturday, November 02, 2002 2:02 PM >>> >>> >>Subject: smaller oil filter >>> >>> >> >>> >>> >> >>> >>> >>> Yes >>> >>> >>> Z37 is the replacement part for the SSS. >>> >>> >>> It isn't much smaller, as it is the same length, it is just >>skinnyer. >>> >>> >>> These were the factory used to clear the guage type oil pressure >>> >>switches. >>> >>> >>> I hope this helps you. >>> >>> >>> Later. >>> >>> >>> I have run one of these in every 1600 I have owned. >>> >>> >>> Rick White. >>> >>> >>> >>> >>> >>> --- message from "mark krawczuk" <[EMAIL PROTECTED]> attached: >>> >>> >>> >>> >>> >>> _____________________________________________________________ >>> >>> >>> Get Your free Ozdat Email Account >>> >>> >>> ---> http://www.ozdat.com >>> >>> >>> >>> >>> >>> _____________________________________________________________ >>> >>> >>> Select your own custom email address for FREE! Get >>[EMAIL PROTECTED] >>> >>w/No >>> >>> >>Ads, 6MB, POP & more! >>http://www.everyone.net/selectmail?campaign=tag >>> >>> >>> >>> >>> >> >>> >>> > >>> >>> >_____________________________________________________________ >>> >>> >Get Your free Ozdat Email Account >>> >>> >---> http://www.ozdat.com >>> >>> > >>> >>> >_____________________________________________________________ >>> >>> >Select your own custom email address for FREE! Get [EMAIL PROTECTED] >>> >>w/No Ads, 6MB, POP & more! >>http://www.everyone.net/selectmail?campaign=tag >>> >>> > >>> >>> >>> >>> _____________________________________________________________ >>> >>> Get Your free Ozdat Email Account >>> >>> ---> http://www.ozdat.com >>> >>> >>> >>> _____________________________________________________________ >>> >>> Select your own custom email address for FREE! Get [EMAIL PROTECTED] >>w/No >>> >>Ads, 6MB, POP & more! http://www.everyone.net/selectmail?campaign=tag >>> >>> >>> >> >>> > >>> >_____________________________________________________________ >>> >Get Your free Ozdat Email Account >>> >---> http://www.ozdat.com >>> > >>> >_____________________________________________________________ >>> >Select your own custom email address for FREE! Get [EMAIL PROTECTED] >>w/No Ads, 6MB, POP & more! http://www.everyone.net/selectmail?campaign=tag >>> > >>> >>> _____________________________________________________________ >>> Get Your free Ozdat Email Account >>> ---> http://www.ozdat.com >>> >>> _____________________________________________________________ >>> Select your own custom email address for FREE! Get [EMAIL PROTECTED] w/No >>Ads, 6MB, POP & more! http://www.everyone.net/selectmail?campaign=tag >>> >> RW> _____________________________________________________________ RW> Get Your free Ozdat Email Account --->> http://www.ozdat.com RW> _____________________________________________________________ RW> Select your own custom email address for FREE! Get [EMAIL PROTECTED] w/No Ads, 6MB, POP & more! http://www.everyone.net/selectmail?campaign=tag -- Best regards, Bob mailto:rcs07@;uow.edu.au --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@;datascribe.com.au/ ---------------------------------------------------------------------
