Low oil pressure

[AdrianC]

The recon engine is fitted with an up rated oil pump and the oil has been changed for the correct type.

I've been re-reading this and I have to ask you ... What was in it ? Who put it there ? AND more importantly ... What do you think IS 'the correct type' ?

The engine had 10/40 oil in it, this was put in by the recon company and the mechanic changed this for 15/40 oil.

The recon company put semi-pathetic in it ??! FFS that doesn't say much for them does it

Apart from the fact that he didn't mention what base either of those oils were, since we're talking about a lack of HOT oil pressure, it might be worth remembering that both 15w40 and 10w40 are the same nominal HOT viscosity...

10w40 may very well be mineral base - here's just one, as sold by GSF...
http://www.carlube.co.uk/index.cfm?product=62" onclick="window.open(this.href);return false;

[kevtherev]

10w 40 is pants..

[DuaneEddy]

I'm with Adrian on this one.
10/40 should be adequate for this time of year - i.e cold cranking in a morning and the viscosity is the same hot.
I wouldn't use it myself though as have a supply of 15/40!! BUT This oil is also pants in the Triumph Bonneville - That requires 20/50 even in the summer to stop it wet sumping - A shame as I had to buy some!!
Back to T25 Land - With an upgraded oil pump (Stated) - more flow - same restrictions from mains / big ends - Oil pressure should be easily achieved!!
Unless - bearings are U/S , Pump is U/S , Oil Relief Valve not seated correctly.

[AdrianC]

I'm with Adrian on this one.

<baffled>
I haven't even expressed an opinion, merely pointed out a detail...

As far as which oils are "pants" and which aren't, I'm saying nothing except point to VW's own recommendations...

Page 72 of the 1987 English language handbook from http://www.westfaliat3.info/html/westfa ... loads.html" onclick="window.open(this.href);return false;

Graph section A specifies, for a full range of ambient temperatures, "High Performance and Improved Lubricity" oils (by which I presume they mean oil meeting VW 500.00 or 505.00, reading it with the text). No other specification on viscosity is given.
Graph section B lists "Multigrade" (VW501.01), varying by ambient temperature...
From -10degC to 30degC+, 20w50 or 20w40
From -15degC to 30degC+, 15w50 or 15w40
From -20degC to 20degC, 10w40 or 10w30
Below -10degC, 5w30 or 5w20
There's also a range of straight weight oils, but we'll ignore those.

The supporting text reads...

As a high quality engine oil is a prerequisite for trouble free operation and long engine service life only a correspondingly high quality oil may be used for topping up and at oil changes.

As it has been established that the wide range of oils on sale differ considerably in quality, we strongly recommend that only the following mineral and synthetic oils, which have been tested by us, are used:

* Multigrade oils, specification VW50101
* Improved lubricity oils, specification VW50000
* High performance engine oils, specification VW50000 and 50500

Amongst other oils meeting those specs are...

501.01
http://www.opieoils.co.uk/c-745-vw-50101-oil.aspx" onclick="window.open(this.href);return false;

500.00
http://www.opieoils.co.uk/c-744-vw-50000-oil.aspx" onclick="window.open(this.href);return false;

505.00
http://www.opieoils.co.uk/c-750-vw-50500-oil.aspx" onclick="window.open(this.href);return false;

[Ian Hulley]

the mechanic changed this for 15/40 oil.

You now have the correct oil in for your engine. Now, moving on ... what oil filter have they fitted ? Hopefully a Mann or VW which will be the same thing.

Ian

[Epiphone]

Hi, so put my bus into a new garage, as my normal one had no time until September.

Had very noisy tappets that wouldnt go away even after a long drive. Always had low pressure on my Oil Pressure Gauge too.

The garage has now confirmed:

80 deg - 2000 rev = 1.6 Bar
80 deg - 2500 rev = 1.9 Bar

he measured this with proper equipment he said too!

so means that the main bearings have too much play/are buggered?

Im confirming with my old garage who did a recon on the engine 3 years ago, and the bill does show Main Bearings, or is there also something called Main Bearings in the gearbox too, which was also reconditioned at the same time? Its all in German of course, but also on the bill is pistonrings, so it definitely contains Engine parts.

Thanks, Epi

[Epiphone]

FYI, the mention of bearings was for the gearbox.

Had to take the Bus to another garage, when the one I was at turned out to be muppets and lost my ownership paper (the 1 of 2)!

its in another garage now and just got an email saying that the Cam shaft is worn out and is not opening the valves on 1 and 3 cylinder. So would explain how bad it is running right now! I assume that a worn camshaft would explain the low oil pressure.

does this basically mean, new engine, based on the labour costs to replace a cam shaft, you basically just buy a new engine?

[Ian Hulley]

does this basically mean, new engine, based on the labour costs to replace a cam shaft, you basically just buy a new engine?

Unless you plan to do the labour yourself I would say definately a replacement KNOWN-GOOD engine or a guaranteed recon .... But surely the recon engine came with a warranty ?

Ian

[AdrianC]

But surely the recon engine came with a warranty ?

Three years, though?

B'sides, if they're trying to fob him off with "Oh, the 'main bearings'? Nah, they were in the gearbox, mate..." and are of the calibre to "lose" the logbook, I think we can take a guess at the usefulness of the warranty.

[Epiphone]

all that was done on the engine was by another garage (not the one I just went to get the oil pressure tested, so they bascially did nothing except lose this document!) was a new gasket and Piston rings. As they said the rest looked quite ok, looking back I should have asked for more!

I had more done on the gearbox, South Africa plate, couple of new (2nd Hand) gears, synrco ring etc

yes was a while ago now, 3 years exactly.

no I cant do myself, living in flat, in the city, no garage, would need help too

[Epiphone]

although a Cam shaft change is not the hardest job in the world (relative to other big jobs), the mechanic still thinks that the low oil pressure has probably effected the engine in other ways

he is suggesting to get a new engine simply

[Epiphone]

im coming to England for Xmas, driving over, if anyone has a spare engine to sell?

[Epiphone]

by the way, I bought an reconditioned engine in June from a guy from Stuttgart who has a load of busses and also races Beatles.

10308376_10152646363855610_1464493572126533477_n.jpg

ALMOST finished installing on the weekend, until we figured out the ignition coil was buggered, no chance to buy another one on a Saturday evening, so was unable to start the engine. Also installing a oil cooler at the same time.

part ordered and hopefully my mechanic can try again tomorrow

[Epiphone]

woooohoooo, its alive!

just heard back from my mechanic mate the new ignition coil did the trick! The re-condition MV engine started!

just need to check the ignition timing, bleed the cooling system, fit the heat shielding to the oil cooler hoses near the exhauts and also a leaky o-ring on the thermostat and im good to go, just im time for winter

E D I T: Crap, not working as expected, further developments here:
https://club8090.co.uk/forum/viewtopic.php?f=37&t=135725