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[HolyCount]

For those that might have followed the GNU saga when it was Tunnies project, and which is still ongoing in my care ..... I have finally solved the elusive tapping .... old engine out -- new one half in.

The noise?  ...... piston slap!  With the old lump stripped down you can move the pistons side to side a fair bit.

Anyway --- lower mileage lump going in, along with the newer gearbox. New back box too.

Fingers and toes crossed  

[JamesV6CDX]

I must admit, it sounded much more lifter related.

Although I agree with your course of action, that old engine was badly abused, so a new, known good lump will be a better option

[Marks DTM Calib]

For those that might have followed the GNU saga when it was Tunnies project, and which is still ongoing in my care ..... I have finally solved the elusive tapping .... old engine out -- new one half in.

The noise?  ...... piston slap!  With the old lump stripped down you can move the pistons side to side a fair bit.

Anyway --- lower mileage lump going in, along with the newer gearbox. New back box too.

Fingers and toes crossed  

It wasn't piston slap....it was no oil to the cam area.....couldn't belease how dry the top end was!

Remember that the V6 has slipper pistons so you do get some movement.

Also consider that the piston crown expands a lot so is quite a sloppy fit when cold

Plus, pistons generally dont wear at the top end, its normally the bores that show the signs in the form of a worn lip.

[HolyCount]

Top end, once lubed up, looks in good order.

Oil wasn't getting lifted to the top because the bottom of the sump had been dished in and blocked it off.

The old lump does look like she was badly treated in her early days, before being rescued by OOF.

[Marks DTM Calib]

Top end, once lubed up, looks in good order.

Oil wasn't getting lifted to the top because the bottom of the sump had been dished in and blocked it off.

The old lump does look like she was badly treated in her early days, before being rescued by OOF.

It was not rescued by OOF!

The lump you removed has cams and lifters in it that were rusted! (it must have been exposed to the elements for bloody ages!)

I seem to recall donating a load of known good lifters but, that only works if the lifters are getting oil (they wern't!)

On the pistons, if you ever look at one closely when removed they are actually smaller at the crown than the skirt. The reason is that the temperature is hottest at the top and coolest at the skirt (oil cooled) so they expand differing amounts and hence the shape they are mad to.

The noise was definately top end!

[HolyCount]

Top end, once lubed up, looks in good order.

Oil wasn't getting lifted to the top because the bottom of the sump had been dished in and blocked it off.

The old lump does look like she was badly treated in her early days, before being rescued by OOF.

It was not rescued by OOF!

The lump you removed has cams and lifters in it that were rusted! (it must have been exposed to the elements for bloody ages!)

I seem to recall donating a load of known good lifters but, that only works if the lifters are getting oil (they wern't!)

On the pistons, if you ever look at one closely when removed they are actually smaller at the crown than the skirt. The reason is that the temperature is hottest at the top and coolest at the skirt (oil cooled) so they expand differing amounts and hence the shape they are mad to.

The noise was definately top end!

Sorry -- in my clumsy way I was trying to emphasise that the engine had been given a rough trot before it came into the ownership/ care of the OOF members I know had worked on it

[Marks DTM Calib]

Lol, sorry, I had a falling out with the original person who worked on it due to his corner cutting and bloody mindedness through not listening and heeding the advice when working on this one.

[HNO3GOH]

If you know any one who needs a boat anchor then the old engine will make a good one

[JamesV6CDX]

Lol, sorry, I had a falling out with the original person who worked on it due to his corner cutting and bloody mindedness through not listening and heeding the advice when working on this one.

So now the cat's coming out of the bag!!

[HolyCount]

Lol, sorry, I had a falling out with the original person who worked on it due to his corner cutting and bloody mindedness through not listening and heeding the advice when working on this one.

Well -- she has had a bit spent on her, with the new mechanicals, bit of a spruce ( new grille) front and rear bumpers resprayed, rear shocks matched up ( one was self-levelling, t'other was not!) all the better bits from the donor swapped over, new battery, soon to get rear tints, and eventually some firmware updates --- hopefully she will be a new beast!

[HolyCount]

If you know any one who needs a boat anchor then the old engine will make a good one

Good recycling idea there  

[JamesV6CDX]

Lol, sorry, I had a falling out with the original person who worked on it due to his corner cutting and bloody mindedness through not listening and heeding the advice when working on this one.

So now the cat's coming out of the bag!!

don't tell me this was over the exhaust manifold gaskets  

[Marks DTM Calib]

Lol, sorry, I had a falling out with the original person who worked on it due to his corner cutting and bloody mindedness through not listening and heeding the advice when working on this one.

So now the cat's coming out of the bag!!

don't tell me this was over the exhaust manifold gaskets  

It was over the:

Fitting an unknown cheap nasty early engine
Non-gen cam cover seals
Not bothering with the manifold gaskets
Badly fitting the gearbox so as to destroy (as was found out later) the torque converter because the advice of fitting it to the box first was not heeded.

Then posting that there crap which was totally due to an incompitent worker who didn't practice what he preached!

The bodges I witnessed on some of the cars he bought was shocking and I could take no more!

[JamesV6CDX]

Lol I cannot argue - I've learnt a lot from you

I fitted my first autobox the "wrong" way by leaving the TC in place - found it more hassle than fitting it while located on the dogs, though!

[HolyCount]

Lol, sorry, I had a falling out with the original person who worked on it due to his corner cutting and bloody mindedness through not listening and heeding the advice when working on this one.

So now the cat's coming out of the bag!!

don't tell me this was over the exhaust manifold gaskets  

It was over the:

Fitting an unknown cheap nasty early engine
Non-gen cam cover seals
Not bothering with the manifold gaskets
Badly fitting the gearbox so as to destroy (as was found out later) the torque converter because the advice of fitting it to the box first was not heeded.

Then posting that there crap which was totally due to an incompitent worker who didn't practice what he preached!

The bodges I witnessed on some of the cars he bought was shocking and I could take no more!

Hopefuly, Marks DTM, this one can be resurrected -- be a bl**dy expensive (and large) paper weight if not