Nifty Posted July 4, 2004 Share Posted July 4, 2004 Resurrecting this again !! Having now run my car with it's new Apollo tank I was expecting a 0.5 bar pressure drop..however, it appears to have dropped by 1.0 bar. So it is now reading 1.0 bar at warm idle and 3.0 bar when moving. Assuming these readings are accurate (which we all know is unlikely) is 1.0 bar dangerously low at idle...is 3 bar sufficient when moving on?? Also thinking about a oneway valve now...more bl%dy expense!! Cheers, Nifty. P.S. Been doing a lot of searching so don't go and tell me to do this ❗ Keep off the straight and narrow 😬 Link to comment Share on other sites More sharing options...
knowley Posted July 4, 2004 Share Posted July 4, 2004 My pressure is higher with the appollo, more like 4/6 bar when hot/cold - do engines run at different pressures, mines a 1.8 r300 Edited by - knowley on 4 Jul 2004 21:42:50 Link to comment Share on other sites More sharing options...
No Nuts Posted July 4, 2004 Share Posted July 4, 2004 Nifty I get 4/5 bar cold at idle / up to 4K rpm and 2 / 4 bar when warm (60 - 80C on the standard guage) at idle / up to 7.2K rpm I'd expect you to be seeing more than 1 / 3. It may be worth trying another pressure sensor - I find I have to change mine on pretty much an annual basis (every 12 - 15 K miles) Guy NN 😳 Link to comment Share on other sites More sharing options...
Nifty Posted July 4, 2004 Author Share Posted July 4, 2004 I'd like to see 2/4 for peace of mind. But I'm trying to ascertain whether 1/3 is engine damaging or not ? Keep off the straight and narrow 😬 Link to comment Share on other sites More sharing options...
caterhamnut Posted July 4, 2004 Share Posted July 4, 2004 Hi Nifty! Our car has always had a low oil pressure when at idle and hot, with apollo. If I am sitting in traffic/stationary for a while I give the odd blip of the throttle to 'pump' it up a bit. I don't think it is that out of the ordinary. 'My First Race - SPA' pictures here 60,000miles in 3years Link to comment Share on other sites More sharing options...
martinwhitcher Posted July 5, 2004 Share Posted July 5, 2004 Oil pressure sender needs replacing no doubt! mine was the same, until i changed sender then 6-7 bar warm running and 3.5-4 bar idle. Martin MW 51 CAT Superlight No.171 Link to comment Share on other sites More sharing options...
Nifty Posted July 5, 2004 Author Share Posted July 5, 2004 Thanks for the answers...however, not quite answering my question. What I really want to know is assuming the readings are correct and I am truly getting 1 and 3 bar respectively will these pressures be sufficient to avoid engine damage? Sender unit is not that old and was reading 2/4 at the time of engine removal. Keep off the straight and narrow 😬 Link to comment Share on other sites More sharing options...
No Nuts Posted July 5, 2004 Share Posted July 5, 2004 No idea about engine damage at those pressures in itself but I certainly wouldn't want to be driving the car with those pressures. Guy NN 😳 Link to comment Share on other sites More sharing options...
martinwhitcher Posted July 5, 2004 Share Posted July 5, 2004 "Sender unit is not that old and was reading 2/4 at the time of engine removal" Sorry but I would still try a new sender , then if still low.....worry? Martin MW 51 CAT Superlight No.171 Link to comment Share on other sites More sharing options...
Pierre Gillet Posted July 5, 2004 Share Posted July 5, 2004 My RTA (Revue Technique Automobile) gives for the 1.6 K Rover at 80°C : 1 bar idle, and 4 bars @ 3000 rpm. Discharge valve @ 4.5 bars Pierre Link to comment Share on other sites More sharing options...
Englishmaninwales Posted July 5, 2004 Share Posted July 5, 2004 See www.blatchat.com/T.asp?id=58129 entry from PC may help (although slightly different context) Malcolm Link to comment Share on other sites More sharing options...
prs Posted July 5, 2004 Share Posted July 5, 2004 Nifty, I was getting the exact same readings 1bar and 3bar, I changed the sender (about £25 fromCC) and my readings are now 2bar idle hot and 4bar hot on the go with an Apollo. 3bar is still giving you approx 45psi. I would definitely change the sender first and then make a judgement. Phil S7SVN Link to comment Share on other sites More sharing options...
Colin Heseltine Posted July 5, 2004 Share Posted July 5, 2004 I am running my car (1.6 Supersport) with Apollo and Laminova. At startup oil pressure is around 4.5 bar cold. At between 60 and 70 degrees water temp (Normal temp with Radtec rad) pressure is down to around 3.5-3.75, at tickover it drops to about 2. At 80 degrees pressure is between 3.25 and 3.5 with around 1 bar at tickover. Haven't as yet tried changing sender to see if can get higher pressure when hot. Colin Link to comment Share on other sites More sharing options...
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