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Clean Bores anyone?

wibbaboo

wibbaboo

New member
Hi - Quick Question...

When you all bought your 996s and had your PPIs - did everyone get a borescope done - and if so, presumably, there was no scoring found?...

Just checking that it is not a myth to find a completely score free 996 engine...

Thanks
Greg
 
I wasn't paranoid enough to bother with all that stuff, just got a guarantee and crossed everything!

I'm running a slightly better oil than normal; a 10W-50 with a bit of zddp which should help.
 
I would say the vast majority of forum members do not go to the expense of a boroscope inspection, let alone the general public.
 
Was this more an issue with 997 bores mainly on bank 2, lesser so with 996?

Hartec have a comprehensive guide online and offer borescope inspection.
 
Greg
I did not go through this when I bought my car a couple of years ago. I bought from a good dealer with a warranty. Engine still fine after adding another 16000 miles, using Mobil 1. (Hope this is not tempting fate!!)
 
It was reported as a potential problem with the 996, something about a hot spot weakening the oil film in a small area in two pots iirc.

If you suffered from every problem reported on the internet you wouldn't even dare hide under the kitchen table!
 
Would a bore score test see any problems with my Cylinder Heads

I know I have a problem with oil in the water. Lincolnshire Porsche specialist replaced Oil Cooler Absolutely no help at all did not fix it (1200.00)

So its down to engine out and test for Cylinder Head gasket (I should be so lucky), cracked Cylinder head.

or Potential D section .

Obviously need to Get engine out and tested. BUT

At present I cant afford to fix it

Local Porsche specialist says engine out and remove Cylinder Heads replace Gaskets and reinstall engine about 2.5 k

Hartech have quoted more but said it could cost me 8 k.

If it was a car that was worth 20k I would get it rebuilt

 
Can't you just get a compression test done? That would show up an issue with the head gasket.

A D-chuck failure would be terminal.
 
I don't think its a compression test problem as the engine runs superbly, There is only a tiny bit of emulsifying in the oil filler tube and the oil is clean.

I have just drained the water and apart from the emulsified oil that floats the water is as clean as when I put it in 2000 miles ago.

I am hoping that a head gasket has gone allowing oil into the water. Not sure why it doesn't happen the other way round

Hoping it is not a head as they are 2k each.

I suppose I a waiting for the time I can afford to do it up in a few months time

 
The oil pressure is much higher than the water pressure.

I think that head gasket problems are rarer than cyinder head problems, which themselves are rare.
 
Hi Richard

Had a chat with my local indy when I took mine for the MOT last week, they said the last time they had oil contamination in the cooling system they ended up using an engine flush in the system to break up the oil and flush it through - took ages and very messy.

They might have a s/h 3.4 cylinder head if it proves to be that.

ORIGINAL: richardjjs1

Would a bore score test see any problems with my Cylinder Heads

I know I have a problem with oil in the water. Lincolnshire Porsche specialist replaced Oil Cooler Absolutely no help at all did not fix it (1200.00)

So its down to engine out and test for Cylinder Head gasket (I should be so lucky), cracked Cylinder head.

or Potential D section .

Obviously need to Get engine out and tested. BUT

At present I cant afford to fix it

Local Porsche specialist says engine out and remove Cylinder Heads replace Gaskets and reinstall engine about 2.5 k

Hartech have quoted more but said it could cost me 8 k.

If it was a car that was worth 20k I would get it rebuilt
Click to expand...
 
Thank you for your reply Richard and Chris

I presume by Oil Pressure being higher than water pressure this would explain why ive OIL in the water. Not Water in the Oil. ?

Have flushed the water again after getting this much out after dropping the water from the engine (Note WAter VERY clean)

Am making sure the oil is EXACTLY on level and will test it again. Expecting Emulsified oil as I didn't do a properflush

Chris can you find out which head he has and what price.

Thanks
 
This was the oil in the water

F2A2545A550844BFB8AB82D2F8159E3A.jpg
 
That is a fair amount of oil.
I've seen pictures of a header tank with less oil in it than that after a D-chunk failure.
 
This was not in the Header tank but in the gallon or so when I dropped the water from the back hose where it goes into the engine

Thanks
 
Little of topic maybe ,( sorry op). but am I right in saying that 3.4 suffer less from bore score as opposed to the 3.6 ? Therefor a 3.4 with a new ims and rms and a low temp thermostat would eliminate most of the issues .? Thanks
 
...and again I refer to this rather excellent article.....

http://www.autofarm.co.uk/pdf/Total911_July06.pdf

Good luck!
 

ORIGINAL: JuliusF

...and again I refer to this rather excellent article.....

http://www.autofarm.co.uk/pdf/Total911_July06.pdf

Good luck!
Click to expand...

That guide says 'The later 3.6 engine is pretty much problem free'
I don't think so.
 
Have contacted Hartech

They are really in the business of rebuilding the whole engine on a might as well basis. ie While its stripped down you might as well replace everything that is worn Not much change out of 10k

Quite right and the way to go if its a car worth 25k plus or going to appreciate

However I don't think I can justify this

So am looking at a local Porsche specialist who will drop the engine remove the heads and report. Hopefully it will be a Head Gasket or Cylinder Head and not a D section but the report should show that

Waiting for a price

In the mean time I have used some Steel Seal which is guaranteed to do no harm and has a money back guarantee if it doesn't work

If it fixes the problem then great if not ive had another month or so out of the car.

I can only repeat Car runs superby, No coolant in Oil and actually when I dropped the coolant at the weekend it was as clean as when I put it in. Just the Emulsified Oil

Fitting a magnetic Oil Plug a a safety check. Also I repeat there was no indication of any metal in the oil when it was changed 1200 miles ago

So lets see what happens


Thanks to everybody

 
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