So sorry to hear of your'e plight...
when juddy rang and asked if we could help his friend we didn't realise it was you and you didn't mention it when we spoken on the phone:(
hope it gets sorted soon..
Mrs hh:angel:
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So sorry to hear of your'e plight...
when juddy rang and asked if we could help his friend we didn't realise it was you and you didn't mention it when we spoken on the phone:(
hope it gets sorted soon..
Mrs hh:angel:
I would be giving these guys a call I have aways found them good with phone questions and have freight all over the place. My Dad in melbpurne needed some stuff and they sent it to him cheaper that what he could get it in Melbourne.
Mr Automotive
Anzac Avenue
Redcliffe QLD 4020
(07) 3284 6688
Did anyone tell you to get an Isuzu?
One of them would haul real well in a ninty.
Thanks all for feedback and comments. :) Have established camp at Gundy and set about some open heart surgery on the 90.
First things first was to try and establish which of the pistons might have cracked a ring with a compression test we headed of into town to track down a diesel mechanic. 4 workshops and a few phone calls later, no one had a adapter for either the glow plugs or the injectors....while everyone was very friendly (just like the sign into town promised!) no one was really very helpful, not wanting a bar of this Land Rover engine.
Using a technique given to me by Blknight, we pressurised the cylinders through the glow plug hole and tried to establish which is any was allowing compressed gas through into the crankcase and spurting oil out of the dip stick etc. We could not establish anything definitive, and not being left we many options rang about to see where we could get a head gasket and rings..since we figured it was time to pull off the head and have a look...luck would have it that both MR Automotive and Four Wheel Drives both have parts, MR being closer got the order for a upper gasket set and set of STD rings.
Next was establishing a bush workshop at some camping grounds near the outskirts of town (and handily close to the CAT workshop)
Attachment 39329
We then set about removing all the bits that get in the way, like the injectors. Noticed oil around the bases....is this meant to be there?
Attachment 39330
Then out came the bolts. Boxes are useful to store them in the right order
Attachment 39331
Out comes the head
Attachment 39332
Inside one of the cylinders. Cross hatching still evident. Slight score on the bore - essentially wiped it off - a sign of things to come? Could not feel any cracks other than those that are meant to be there in the rings with the feeler gauge, but a large lip of carbon was noted
Attachment 39333
What does tomorrow bring? Looks to be removing the carbon lip and seeing what it is hiding. Dropping the pistons and seeing what has happened to the rings. Checking the head, since some fractures were noted around the pre-combustion chambers - not a good sign either.....
You should have someone video everthing and make a doco.
I know a bloke if you interested.
I am sure the poms would watch somthing like that.
Sorry to hear about your troubles James, hope you can get it sorted okay.
Gill said do you want help from Neville :wasntme:
Did mr get the parts out same day?
How's the food going, do you need a air-drop
Quote:
Originally Posted by Gavo
We are filming as much as we can, we only have a little handy cam...and we got some good time-lapse of taking off the head yesterday with the gopro. I guess that is something positive! :)
MR said the parts should arrive with them today....and they would send them ASAP. But it looks like the weekend will get in the way and delay things a little.
Juddy - still got plenty of food left...at least 2 more meals from Gills stash she cooked up. We hijacked the freezer in the caravan park :cool: The curry was delish! :)
Slight cracking on the pre-combustion chambers and even on the injector nozzles is normal (unfortunately!).Quote:
Originally Posted by Veryan
Those vertical lines in the cylinder look ominous... Which cylinder was that?
not too worried about the vertical lines on the bores thats going to be from the ring gap from the first and second compression rings Im more worried about the amount of oil thats up past the rings and the fouling on the bore....
from my 2.25 manual....
the clearance limits for the diesel piston to bore is .111mm (44 thou) to .134mm (53 thou)
for over size its .111 to .157mm (44 to 64 thou) the tighter tolerance I quoted you on on the phone is for petrol engines.
did you want me to scan in the rebuild instructions from my 2.25 workshop manual and did you want me to send you any of the specialist measuring tools or the bottle brush bore hone?
Well, good day and bad day....
...knocked the pistons out this morning and was stunned to find no cracked piston rings! So what the bloody hell is going on!?! :confused: :confused:
Checked the head for any signs of warpedness....none that we could find with a straight edge. :)
With the help of Blknight to bounce a few ideas off and advice, we measured the bores. I can confirm that a 2.5D N/A has a slight tapper at the top. Using feeler gauges we inserted the pistons back in and checked the tolerance between the skirt (at right angles to the gudgeon pin) and the bore with a 0.0015 thou feeler and it would not fit in the gap, which is within tolerance of the 0.001 - 0.002 set out in the manual. Unfortunately the manual does not detail any other tolerances for pistons and rings....:eek:(!) From this I can only really conclude that the engine is not that worn?! The rings do not look scored or damaged and neither do the bores. It ran fine and was not spewing out blue smoke or even hard to start. We cleaned out the carbon build up on the tops of the cylinder bores and gave the pistons a bath and light scrub in diesel, while everyone else enjoyed the sunshine and the artisan spar in the background:D
Are there any issues with putting the pistons back in and not replacing the rings? They look fine. Feeler gauge says they are fine...?!
This leads me to still be confused. I did find that the oil pump was very loose and I removed it by using only my hands and no tools..:(
Which leads me too an interesting discussion with Blknight RE the vac pump, which is driven off the cam where the injection pump used to be on the 2.25D. Where does this exhaust to? The Camshaft? And then up into the rocker cover via the push roads? If the oil pump was loose, would this allow the vac pump to exhaust into the crank case via the oil drive passageway, over pressuring the crank? Its not pistons doing this as far as I can tell. The brakes are the only thing that have been touched in this country - would reverse bleeding lead to a damaged diaphragm in the brake booster, leading to the vac pump continuously sucking and through the loose oil pump pressurise the crack case?
Morning come round, swags and bivvy bag still out. First proper night of camping. Poncho wrapped round the engine to reduce dust getting in. Later it became my tarp to work off
Attachment 39358
Seem to be attraching a little bit of attention at the camp site...these guys came and helped us measure the head.
Attachment 39359
Me pulling of the sump
Attachment 39360
Not really where you want to have your piston - or head, in the back of your car.
Attachment 39361
Scrubbing the pistons in Diesel, removing the carbon...if this all goes well may even gain a few cc :D
Attachment 39362
Being stuck here seems not too bad...hot spar behind the workshop, and a B&S ball is happening across the road tomorrow...best go dig out some sort of black tie and stock up on Bundy ;)
J
