Nikasil ate my hamster
Author
Discussion

PaulZR

Original Poster:

177 posts

245 months

Wednesday 7th July 2010
quotequote all
Actually, not strictly true.

I knew my old '98 XJR had a a nikasil block and, based on the 'net chat (and the science) I would often lie awake panicking about it. no trouble in 15k miles.

What didn't realise was that my '98 E39 528i probably also had a nikasil block. Again, many miles, no issues.

I'm now after a new 5 series for about £2k, which puts me in nikasil teritory. What I'm wondering therefore is not, 'should I buy a nikasil car?' Question is more along the lines of, how many folk on here have been unlucky enough to have a high mile (say > 100k) nikasil engine let go in the last couple of years?

ExPat2B

2,159 posts

230 months

Wednesday 7th July 2010
quotequote all
PaulZR said:
Actually, not strictly true.

I knew my old '98 XJR had a a nikasil block and, based on the 'net chat (and the science) I would often lie awake panicking about it. no trouble in 15k miles.

What didn't realise was that my '98 E39 528i probably also had a nikasil block. Again, many miles, no issues.

I'm now after a new 5 series for about £2k, which puts me in nikasil teritory. What I'm wondering therefore is not, 'should I buy a nikasil car?' Question is more along the lines of, how many folk on here have been unlucky enough to have a high mile (say > 100k) nikasil engine let go in the last couple of years?
I thought this issue was ended now the low sulphur petrol is ubiquitous ?

rottie102

4,033 posts

214 months

Wednesday 7th July 2010
quotequote all
If it didn't cause an problems long time ago (within first 50k miles) it won't cause any now.
You can sleep ok now...

Boosted LS1

21,200 posts

290 months

Wednesday 7th July 2010
quotequote all
Is it an alusil block?

PaulZR

Original Poster:

177 posts

245 months

Wednesday 7th July 2010
quotequote all
Sorry, should have said nikasil bore lining rather than block...

I understood that although high-sulphur petrol has been absent from forecourts for the last decade, it was possible that nikasil bore linings could be 'weakened' (for want of the proper technical term) by the higher sulphur content petrol available in the late '90s.

To be fair, the majority of opinion on this site seems to come down in the, 'if it ain't broke now, it ain't gonna break' camp. Just curious to see what the response was.

Graebob

2,172 posts

237 months

Wednesday 7th July 2010
quotequote all
PaulZR said:
'if it ain't broke now, it ain't gonna break'
This. Unless you find some kind of ridiculous, minty mint example which has done stupid low miles but hasn't had the engine replaced (by some miracle). I wouldn't worry about it, if I were you smile Concentrate on decent or recent suspension/exhaust, as they can be pricey and tedious.

*Al*

3,830 posts

252 months

Wednesday 7th July 2010
quotequote all
If i remember correctly the Nikasil liners on the 2.8 engines were changed to Alusil around S reg 1998/99?

g3org3y

22,492 posts

221 months

Wednesday 7th July 2010
quotequote all
PaulZR said:
To be fair, the majority of opinion on this site seems to come down in the, 'if it ain't broke now, it ain't gonna break' camp. Just curious to see what the response was.
^This tbh and appears to be the majority view on all the BMW forums (fora?) I frequent.

catso

16,478 posts

297 months

Wednesday 7th July 2010
quotequote all
I had a '96 BMW 323i (2.5L, 6cyl but the same block as 2.8 IIRC?) that had a Nikasil coated block, at 4yrs and around 60k it had to have a new (cast iron lined) block fitted due to excessive oil consumption and occasional starting woes (no compression) BMW did it FOC and gave a 100k warranty.

Not sure if they still do them FOC but surely most that needed it doing will have been done by now?

IIRC BMW 'mark' the engines that have been replaced somewhere on the block and I'm sure they would have a record of which were done or not.

Edited by catso on Wednesday 7th July 22:36