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5th December 2009, 11:38 PM
#1
Looking at buying a disco tdi
Hi all,
I'm looking at buying a Discovery tdi, and looked at a 1994 today, pretty certain it was a 300tdi (are all 94 models 300tdis?)
The car presented very well, some minor blemishes, interior was very good (even had a new roof lining), and has done 197k but I have some questions I'm hoping those more in the know can help me with.
1. Above 3000rpm (probably closer to 4000), there was a small grind going from 1st to 2nd. I'm guessing this is a worn synchro. Is this a common problem and should I allow for a future gearbox replacement?
2. Timing belt - everything I've read on this forum suggest these should be changed every 80 odd thousand. The owner seemed to think it only had it's first at 180k?? Am I the one in the wrong?
Thanks.
Eli
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6th December 2009, 01:53 AM
#2
A) anything with a VIN that is higher than SALL...MA081991 is a 300tdi.
Whilst the M code means model year 95, the actual day it was built can be as early as March 94, and import date on the compliance plate a couple of months after that.
as to
1. - the usual fix is to replace the ATF ( yes, the stuff auto's use - it's spec for that type of gearbox) with MTF or Syntrans ( do a search on those oils and R380 and you'll be able to read the bigger explanation). Said gearbox hates anything heavier than 80w. The early R380's do wear their 2nd syncro, but with better oil and some practice, you won't notice it, and the gearbox should last.
2. - find some documents to confirm when the belt was changed - again do a search on 'timing belt' and there is plenty of info as to what and how. The short story is when in doubt, give it a new one.
ps Shift point is usually 3000 rpm - 4000 is pushing it a bit hard. Max rpm is 4500. If you are changing at 3500 rpm, then the power is a bit down - which means some work required (If only maintenance - but at least you know it may need some time spent on it)
There is plenty of info on the 300tdi here if you read back through the posts, and a good buy is the workshop manuals on CD in the shop section .
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6th December 2009, 09:12 AM
#3
Thanks for that.
It definitely had an MA in it, not sure of the numbers afterwards. I think build date was 7/94.
1. Ok, thanks for the tip. I will search the forums.
2. Yep that is my usual approach when in doubt too. The high km "first change" just struck me as very odd.
Re the shift point, I was only shifting high to test the engine and gear changes through the revs, and because the seller specifically mentioned the change noise.
Eli
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27th December 2009, 05:12 PM
#4
Hi Eli,
Mine has a worn synchro from 1st to 2nd too, problem lessens as the car warms up. I do not know enough about the oil to comment.
Timing belt, defiantly replace if in doubt, mine broke while driving....... don't go there......
Also if it grinds a little going into reverse. Go 3rd or 4th first then keep clutch in and then go reverse.
Check to see if it has a black expansion tank under the bonnet for the coolant, you will need to replace it with a white one as the black ones split apparently.
Great car, go well.
Jay
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