Concerns about a 4.2 motor

[Grant]

Hi Ricster,

EGT on my 4.2d Turbo + intercooler, gets to around 560 C. Boost on the turbo is around 11 psi. Troll has been running with this setup for around 330k km and post important issue is oil changes.

Just had the compensator on the pump sorted out as it was running lean higher in the rev range.

Dyno at SAC Diesel is as follows,

92 kW on wheels at 3000 rpm
376 nm at the fly wheel at 2200 rpm

Regards


Grant

[davejones]

Hey Grant.... when are we seeing the of your beast?

[ricster]

Davejones....
quote....Jongosi also sweats oil from the same spot.

I found out that my turbo was fitted by CRD somewhere in Pretoria area. I must be honest but if this is their workmanship .....then I'm NOT impressed.... and if this was not done by them ....I please accept my apologies.
The steel flange bracket that bolts onto the underside of the turbo, connected to a hose which takes the oil back to the sump is where the problem lies. I'll take photos and post them here. But the bracket has been brutally modified by someone brazing a piece of threaded pipe where the hose slips over and is clamped tight. Unfortunately due to the fact that the oil, like any oil should, works its way in through the threads between the rubber hose and leaks out all over the asbestos tape the have so cleverly wrapped the hose in. The only way I can sort this out will be to cut the threaded piece off and braze a new ridged piece of pipe, similar to what the old brass garden hose clamps used to look like, on so that when the hose is clamped tight it will not leak.

I wonder if your is the same as mine, as there should not be much if any pressure for the return oil into the sump, and no other reason for it to leak !! but I can understand why the oil leaks through the threaded/dented, gauged out piece of pipe.

look just above the hose ....you can see the brazing bubble where it is brazed at an angle too

turbo bracket.jpg (160.16 KiB) Viewed 1486 times

look at the disgusting finishing off of this ...... I can't think of a nice word to use !!

6.jpg (93.13 KiB) Viewed 1475 times

sorry about the lousy photo....but its about the same as the quality of the workmanship of this flange bracket

7.jpg (107.23 KiB) Viewed 1475 times

[davejones]

Cedric, sorry for late reply.

Shortly after your unfortunate incident in botswana I booked Jongosi into Alpine Developments for a check up.

Everything is 100% according to Dennis (who owns Alpine Developments). Ended up charging me R200 for having Jongosi the whole day. Oil sweat was due to a weak clip, although I havent checked yet to see if the sweating has stopped. Mind you, i spent nearly 6 hours under Jongosi doing the last service and didn't notice anything unusual from the sump connection.

The needle of the guage was also jumping around erratically and this has been fixed (loose probe). Injectors apparently 100%.

Jongosi is running beautifully and I hope this lasts for many years and km's to come. God speed with Iron Maiden's revival (think of it as extreme makeover: 4x4 edition!)

[ricster]

Ha ha ha..... pimp your ride