Cannon Fodder

iTrader: (100)

The engine is now loaded up and upon an initial examination there are some very interesting findings which have come to light.

Later on this evening I'll post up some pics along with further information.

stevep360

iTrader: (20)

looking forward to it Ty and pleased you have made further progress I'm keeping eveything crossed for you dude

Cannon Fodder

iTrader: (100)

Thanks Steve, it is 'satisfying' to know that there are reasons for the poor performance of the engine and the all the associated expense to be incurred.

redwards

iTrader: (6)

So when are you sharing the satisfaction?!?!? There are people here who need Tyron style satisfaction

Cannon Fodder

iTrader: (100)

Right then I arrived with Ryan today to pick up the engine after it's removal, so knowing that the nearside or left hand cylinder head had been 'noisy' from the off we decided to remove the rocker cover and have a look.

Upon checking the valve clearances (on the one nearside cylinder head only) with a feeler gauge it was found that:

The exhaust valve clearances on both cylinders were beyond the maximum tolerance at 0.30mm, given that the maximum tolerance is 0.25mm.

The inlet valve clearances on one cylinder were under the minimum tolerance at around 0.10mm, given that the minimum tolerance is 0.15mm.

Another curious issue that was found that upon checking the head stud nuts it could be seen that there were different lengths of thread visible beyond the end of the head stud nut.

They should all be in uniformity as everyone should be exactly the same across all six studs/nuts used per cylinder head.

(Please see the attached installation instructions for the ARP 2000 - their product code 260-4701)










The rear crankshaft oil seal was found to be damaged as you can see in the first picture below, also the seal as can be seen in the third and fourth picture also has not been installed 'squarely'.

It is only by some fluke that the seal has not started leaking heavily but you can see evidence in the second picture of oil mist accumulating.






Obviously the above was only found on a very cursory inspection of the engine and more may yet be found once the engine is stripped down and examined.

Please also see the below pictures that were taken some weeks ago which show evidence of the pressurised coolant plus the oil on the workshop floor which was coming directly out of the exhaust silencer.





At least now there is something to act upon and once the engine is stripped down then the full extent of the repair will be known.

Cannon Fodder

iTrader: (100)

Well not so much satisfaction as such Richard but at least a few questions have been answered so far, with plenty more of answers on the way.

Rally fan 555

iTrader: (7)

Nice to see some first steps, if you can call a failure "nice" " soon be running Ty

Cannon Fodder

iTrader: (100)

Thanks Simon, we both know that feeling I am afraid.

Never mind, onwards and upwards as the saying goes.

Cannon Fodder

iTrader: (100)

Well I also got to see my new wheels today as they arrived with Ryan yesterday for him to refurb, like I have posted before I really like these Rota Mesh wheels which bare more than a passing resemblance to the S203/204 wheels.



Now to decide which colour to have them finished in...

redwards

iTrader: (6)

That mess on the floor is not good at all. The strip down will be interesting. Glad to see you're going in the right direction (again).

Cannon Fodder

iTrader: (100)

It was pretty concerning Rich as was the colour of the exhaust gases, the cause will I'd imagine stand out like a bulldogs ***** on the strip down of the engine.

It's definitely in the engine as the turbocharger had no oil leaks and was totally dry.

M2RTXhawkeye

iTrader: (61)

Good on you Ty for stripping it down to find find out the cause I know if I was in your shoes I'd do exactly what your doing. Least you can move on and look forward

Martin

Cannon Fodder

iTrader: (100)

Thanks Martin, it will be stripped down by the designated repairer (which is staying secret as I don't want them involved as the previous repair has nothing to do with them), but today's quick examination was very informative.

Also the strip down will determine whether the engine ends up as a 2.1 stroker or not, as if the pistons need changing then for the extra expense of a crankshaft then I'd be foolish not to given the chance.

prodriverules

iTrader: (52)

Actually mart Ty just stands there while ill do all the work......as usual I might add

Cannon Fodder

iTrader: (100)

Well someone has to supervise / be the brains of the operation.

jayallen

iTrader: (31)

Ty, have you disclosed who carried out the original build? Can't say I've seen anyone mentioned..

Cannon Fodder

iTrader: (100)

He has posted on this thread Jay, and I dare say he will again at some point.

Cannon Fodder

iTrader: (100)

I'm still deeply confused as to why the thread lengths above the head stud nuts are not uniform?

As the saying goes 'the camera never lies' - so what would these pictures seem to indicate or point towards?

I'm up for a debate on the matter if anyone would like to offer a possible explanation or put forward any other contribution?

mervil

iTrader: (5)

I'd go with silver or a slightly darker grey Ty will look nice and fresh against the blue!

mervil

iTrader: (5)

M2RTXhawkeye

iTrader: (61)

Like the wheels aswell Ty I'd go a dark gun metal on the wheels

Martin

redwards

iTrader: (6)

I wasn't too sure on the wheels, but seeing that pic has changed my mind. A lot better than silver.

Cannon Fodder

iTrader: (100)

That colour combination does look very nice indeed.

It certainly between dark gunmetal and a dark gloss bronze at the moment.

I've already got about the best gold wheels so I've discarded that idea.

Rally fan 555

iTrader: (7)

If the nuts show differring thread length and assuming they were all the same length, are they torqued down "unequally" or have they stretched ?? laymans view !!!



Nice wheels in the Gunmetal colour

Cannon Fodder

iTrader: (100)

Possible Simon, but there are however further possible causes / explanations.

And that was only a quick examination of one cylinder head plus the rear crankshaft oil seal really stood out in more ways than one.

DannyBoy007

iTrader: (7)

Not looking good Ty. We already chatted via PM, So I won't go over all that again.

But the signs are looking at a poorly built engine by someone that hasn't got the attention to detail required.

As already said, something is looking hinky with the studs/nuts.

Cannon Fodder

iTrader: (100)

Thanks Danny, you are 100% correct that something is definitely not right and it does point to a poorly built engine.

As I've stated for a while that the engine does not equal the ability of the components used.

Thanks for the PM's as well.

Cannon Fodder

iTrader: (100)

Yes the darker gunmetal / anthracite colour definitely suits the car colour and wheels.

Infected by sti

iTrader: (6)

Was the block machined for oversized bolts Ty or are they still standard size?

Cannon Fodder

iTrader: (100)

No machining required Craig, the ARP head studs are 11mm in size - the same as the factory head bolts.