hunta
Member
- Messages
- 405
No no mate, didn't mean anything untoward. I don't know anything useful! Just wishing you luck.
Can't get it up? Consider your lubrication!
- Thread starter Emtee
- Start date
No no mate, didn't mean anything untoward. I don't know anything useful! Just wishing you luck.
2b1ask1
Special case
- Messages
- 20,326
Miles glad to hear the extent is not to great but a couple of things:
What are the granular bits in the oil of photos 1 & 2 ?
If the oil pump checks out is there any restriction in the crank oilways or are they all super clear?
Low oil pressure is often a sign of worn big ends as the oil escapes too easily but there is usually a reason for the accelerated wear in the first place, Have they checked the con rod big end conditions?
What are the granular bits in the oil of photos 1 & 2 ?
If the oil pump checks out is there any restriction in the crank oilways or are they all super clear?
Low oil pressure is often a sign of worn big ends as the oil escapes too easily but there is usually a reason for the accelerated wear in the first place, Have they checked the con rod big end conditions?
Emtee
New Member
- Messages
- 8,446
Phew, Andrew I wasn't sure from your post whether you knew of some further likely damage? Thanks for your good wishes.
Hi Newton,
The granular bits are just sealer after being scraped off the case. All the oilways checked so far are clear. The oil feeds the crank shells first and then the big end shells and as the crank shells were worn Geoff was concerned that this might have starved the big end shells. He's checked one and other than a level of wear you would expect, there was nothing untoward. All the big ends will be checked and all shells replaced. The crank itself will also be cleaned and all oilways checked.
As to the cause, well I wonder whether a slight clutch imbalance might have been the root cause?
Cheers, Miles.
hunta
Member
- Messages
- 405
Phew, Andrew I wasn't sure from your post whether you knew of some further likely damage? Thanks for your good wishes.
The only thing I can say with any certainty is that it is likely to cost you more than £7.02 I'm afraid.
2b1ask1
Special case
- Messages
- 20,326
Thanks Miles I hadn't thought of sealer, they kind of looked glassy...
I've not worked on a dry sump before but I'm guessing the oil system is not going to be much different with the con rods being fed through the crank even up to the the pistons through the gudgen pins, ultimatly the bores get splashed... I know the grief I had clearing the oilways on my Merc lump; but then that failed because of sludge build up!
It is in the best place and they will look after the rebuild for you... soon get your smile machine back!
Parisien
Moderator
- Messages
- 34,927
Had missed this Miles, hoping shes fixed really soon and the guys are easy on you,the words I kept hearing about the 4200 engines was bullet proof........but for how long and why did the wear happen at 70k....slight build defect or just bad luck for 1 in a 100....or 1000?
Good luck anyways!
P
Good luck anyways!
P
Emtee
New Member
- Messages
- 8,446
Hi Andrew, I'm hoping to have her back by the end of next week all being well, though perhaps only briefly. Geoff at Shiltech has had to spend some time and innumerable calls getting to the bottom of inconsistent part numbers. The crank shell numbers were not those listed as correct for the year (actually later PN's) and so were not consistent with the VIN, engine or assembly recommendations. Calls to Eurospares, Graypaul and Maserati UK ensued with little or no help forthcoming, so it was a bit of insider knowledge from a contact at Stratstones that helped point the way to what are actually 430 shells (makes sense I guess).
All crank and big end shells are now on order for delivery on Friday along with a full chain set and chain guides, plus assorted sundries. So all being well the re-build can begin in earnest next week.
I say briefly as (invoice permitting) she'll be straight back for a partial re-spray (bumpers, bonnet, wing mirrors and various other 'patches') and a full detail inside and out. I've waited this long so I can wait a little longer and can then look forward to her coming home all nicely groomed.
Fingers crossed!
Thanks for asking.
Em.
Emtee
New Member
- Messages
- 8,446
Hi P, this will be an interesting one to monitor as more of the 4200's reach higher mileages. Certainly all the feedback thus far has been as you say - that the 4200 engine is pretty bullet-proof, and up until this episode I would have happily included myself in that.
My engine shows no sign of damage, but rather just wear on the crank shells. The only thing that is possibly noteworthy is that it is the shells at the flywheel end that have worn most, which could point to some slight vibration being thrown into the crank from the clutch? That's only a guess though..
One to watch...............
Em.
Emtee
New Member
- Messages
- 8,446
Just changed it Benny. The new clutch has done less than a thousand miles.
SpyderNick
Junior Member
- Messages
- 326
do you think that a unbalanced clutch could do this and in 1000 miles ?
just thought.
just thought.
Khamsin433
Junior Member
- Messages
- 414
All positive stuff Miles. Hopefully this will be a well sorted engine after all of the work.
As the guys say, fingers crossed it's not too painful on the war chest contents.
As the guys say, fingers crossed it's not too painful on the war chest contents.
Emtee
New Member
- Messages
- 8,446
I don't think so Nick and it's only me summising that it has any relation to the clutch anyway. I will ask Shiltech about balancing it as a precaution though.
Last edited:
SpyderNick
Junior Member
- Messages
- 326
Thanks Miles, That's good to know, as I might need a clutch at some time !
BennyD
Sea Urchin Pate
- Messages
- 15,010
Sooner rather than later with all that extra power!