[chip]

My block is now within half a thousandth of an inch across all 4 cylindres in terms of ovality and bore straightness.

Well impressed at the engineer being able to sort that.

Sadly found another problem now though, whatever fool did up the oil pipes over tightened them, so badly so thats its caused a crack which as its in the casting next to the block wall means that its written off the brand new block.


Anyone want to buy a brand new block bored and honed to perfection to within half a thou but then ruined by the previous owners assembly skills?

Start the bidding at 50p?

Could make an interesting coffee table with a sheet of glass on it, or maybe a 4 bottle wine rack?


Oh well, time to throw it in the bin if no one wants it and start again with a nice 150K mile xe block ive got lieing around at c20letmini's place from where i left it about 4 years ago!


Chip

 

[RDS]

The oil pickup pipe should only be done up to 6nm Chip don't suppose you have an XE block that has no need for a rebore do you (86mm) with very little wear? Could do you a swop for a LET block that needs boreing as it is worn and could do with .5mm being taken out?

 

[chip]

ive got an XE block, but havent stripped it to examine it yet so not sure if it has little wear or not, its from a porous head engine.

Chip

 

[RDS]

I need a std block which basically just needs honing and a new set of rings being used! If you can help then I can do a swop! Need block ASAP though mate!

 

[chip]

TBh mate im not going to get a chance to even take it apart for a few weeks, so probably better if you look elsewhere, i wouldnt mind swapping (makes no difference to me what block i use) but im just not goign to be near it with time to spare to strip it for ages.

Chip

 

[RDS]

No worries

 

[RDS]

Which bit has actually cracked then? There are a few oil pipes on the LET

 

[observer]

xe and let blocks? is the difference the oil feed hole? i heard let blocks had better webbing and were quieter??

 

[MikeWarner]

I think all the blocks XE and LET were quieter with the extra webbing on the later ones. The oil feeds on the XE blocks are merely blocked with a bolt.

 

[Rob_S]

i want to see if i can fix that

 

[Animal]

chip, your pm mailbox is full!

 

[Giles]

Can it not be welded then?
I know a specialist who I've talked to in the past and although much of a block cannot be welded due to possible cracking, a lot of it can.

 

[SimonP]

Can it not be welded then?
I know a specialist who I've talked to in the past and although much of a block cannot be welded due to possible cracking, a lot of it can.

I was going to ask that question, but didn't want to be laughed at. Can it not be repaired?

You're having no luck with your engine build.

 

[cambridge]

does he ever stop bitching about this engine??

 

[JohnA]

does he ever stop bitching about this engine??

lmao lmao

 

[chip]

Simon, no it cant be welded as its iron and the weld would be steel wire, and as such would expand differently when subjected to heat, given the close proximity of the cracks to the wall of the block i dont view that as an acceptable state for a .5K bhp or so engine to be in, for the sake of the work involved i may as well start again with a nice second hand block (which will be better settled than a new block anyway).

Cambridge, im not bitching about anything, im just giving people an update, they were asking me in the previous thread if it would be possibly to correct the maching errors so i was posting to say that yes my friends guy who machines stuff like this very accurately by hand had fixed it, so that if anyone else gets a similar problem they know it CAN be fixed, but at the same time obviously as i wont now be able to use the block due to the overtightening of the oil pipes cracking it i was mentioning that otherwise people would be asking me when it would be finished etc if i just let the story end at "block has now been correctly machined"

The big question is when people like you will stop bitching about me making comments on my engine that are of interest to the board?


Chip

 

[DarrenH]

seriously though

Which bit has actually cracked then? There are a few oil pipes on the LET

 

[chip]

Ill get some photos but its basically the main oil pipes out of the block near the pump.

Chip

 

[JohnA]

If it was the oil pickup, then I understand their reluctance to use the manufacturer's torque values - the seem far too low.
Of course you're meant to use threadlock there as well.

 

[RDS]

There is only actually one oilway though that is needed from the back of the block surely, i suppose they may have put a gauge sender into one of the other holes? That would be the turbo oil feed. All the rest are oil pump based.