groovzilla

Stupid question----> Bottom line it's an issue caused by the Piston RIngs and a car to avoid.
silver_tt just went down a few rungs claiming he would have purchased this car and sorry to the sellers for me claiming a fasle issue.

silver_tt

The irony is that it's not a great picture and would be much easier to see better if it was scoped from the sump. An oil analysis would have made it conclusive as well which was another rookie mistake. Even if I am wrong, it is possible, I don't care and still would like to hear the opinion of Charles, who I consider the best advice you can get on this matter, even if you think it's stupid I do not care at all about your opinion on this matter.

For sure the other photo with a "cracked cylinder" is not cracked and doesn't have bore scoring. I feel very sorry for the owner of that car who was falsely informed of this bull****. If you did this in my job you would be fired FOR SURE and could face prison time for branding yourself as a "veteran" or "expert" but making such a grossly negligent mistake that could cause someone financial damage. You for sure caused them emotional damage for no reason other than you just don't know any better.

What rung I am on in your book means nothing to me. 15,000+ posts of this gibberish....... oh look Rennlist says I'm a "Pro" now under my name because I have 500 posts or some other nonsense. You should stick to giving advice about photography, something you actually might know something about.

Rig.Stunts

Thread drift, important discussions like this one has evolved into, should have it's own thread!

My novice $.020- though more invasive, the sump removal must have far fewer mechanical steps to achieve a better result.

Gone are the days of scoping cyll 6 and making a decision?

Thanks to both of you, and Merry Christmas

groovzilla

Hey Rig Stunts--->Apologize for the "drift" on your thread. As a long time RL Member & purchased my car at 106K miles 2 years ago and very happy with its condition and performance, I felt any info you had regarding the Spark Plug Hole Inspection would be of help. Due dillegence a must and try findsing one that has been gearaged and well cared for.
I always recommend a California car. They seem to age the best especially the undersides!
Good luck in your search.

silver_tt

Happy holidays to both of you (today it is Christmas in Germany)...

This thread was started by "somethingclever" but this is RL and nothing is ever on topic. Plus based on the information they came here for this conversation and the details unfortunately are highly relevant to them and could have a huge impact on this this individual and the car they end up with. I wish someone would have given me all this detail before I ever bought one of these cars. It is better to know now than to find out later that you made a mistake and didn't price it in -- this happens so often.

We all have a responsibility to post and keep correct information for this community. It is a MASSIVE asset having Charles here and being able to read his posts and I wish Jake was still around but it is stuff like this that is the reason he left, he got tired or arguing with amateurs that have never done it before but think they know better. If you ever see me post patently false information please correct me -- and I 110% mean that -- you will not have hurt my pride or my feelings and you will have helped me and made this community better. There are just only so many times I can see those pictures posted over and over ad nauseum with these false conclusions. It is completely ridiculous. People will come and search these threads later and be led into wrong information by someone they think is an "expert". I don't find this responsible or funny in any way.....

Merry Xmas

Charles Navarro

If it has scoring, just move along to the next vehicle. That's my recommendation.

Charles Navarro

That's streaking for sure. I'd say that's normal. I wouldn't be concerned if I saw that, especially if the manometer readings and compression/leakdown numbers are normal.

Charles Navarro

I may not be the one to directly reply to the ticket, but anything technical gets forwarded to me for review so I can give my two cents worth. Same goes for bore scope photos or Speediagnostix oil analysis test results.

silver_tt

Thank you. And thank you in general for the information and experience that you have shared with this community and on your website. I have read all your papers and learned so much from you and your contributions on this platform over the last 20 years. I hope that you will know that I really appreciate it. Happy holidays to you and your family.

silver_tt

Groovzilla, I hope you will think about what I said. What you have done is not right and was very irresponsible. You should not have been selling yourself as a borescope expert to folks giving advice in PMs and such as you said. You should have been sending them to a real expert like LN Engineering's email address to create a ticket. You owe both of those sellers a huge apology, which I am sure you will never take the time to give. And now we know never, ever to use Denny Aker (never would have in the first place anyway).

groovzilla

1. I proved you wrong with photo evidence that Spark Plug Hole Bore Scope Inspections of higher mileage 997's do in fact do show issues with cylinder streaks/marks/scoring etc.
2. I won't buy a 997 that has any questionable marks on the cylinder walls. ---->You go ahead and buy 997's with questionable mrks on cylinder walls. That's your choice although I would caution against it..
3. Both of the Bore Scope photos that are posted in my above posts were from Marque Motors in Portland and Porche Bellingham. I took their advice and didn't buy either one of those cars and glad I went with their recommendation.
4. Your comment about Aker's Porshe is clueless---->. Aker's Porsche is a highly regarded Porsche Specialist shop in both air cooled and water cooled cars. They have PPI'd probably 20 of my Porsche's over the years as well as any other RL members and they have many RL customers. They are one of the most honest shops around. They are neutral when it comes to PPI and don't show favor a customers car when customer is selling.
They PPI'd and Bore Scoped through Spark Plug Holes my current 997 C4 and cylinder walls are clean and Over Rev & Cam Deviation numbers are positive. Aker's does excellent work and they have a great reputation.
My car burns no oil, has never had soot buildup on exhaust pipes and runs like a top.

**I would be careful what you say about businesses you know nothing about especially amongst the Porsche Community. It could be taken as slander.

silver_tt

As I was reviewing threads related to this over the weekend for reputable information I couldn't help but to notice that you spam post in every single one always multiple times and it's the same drivel with the same images you posted above over and over. And they are all wrong. Your posts are also very hard to read and looks like something a 12 year old with attention deficit disorder would write, constantly edited, bolding random things, I can't read this crap. If I was able to I would delete your RL account to wipe out all 15,745 posts and net/net this would be a better place for having done it. Get a hair cut and grow up......

groovzilla

I was going to say the same about you.---->Your like dealing with a child that has some sort of mental disorder.
At least I proved my point that Scoping from Spark Plug Holes is a viable way to inspect 80% of the cylinder Walls in higher mileage 997 which was the point of my posts.(Incase you forgot)
You can't deny that.
I bet you don't even own a Porsche

Petza914

Mileage has nothing to do with whether or not scoping from the plug holes shows anything or not - it's completely based on how progressive the scoring is and how long ago it started.

If it started recently in a 20k mile 987 or a 100k mile 997, neither may show anything from the plug holes as it starts at the bottom of the cylinder and as it gets worse the piston rings scrape more cylinder metal from the score lines up the walls until it's also visible from the plug holes.

Once it's visible from the plug holes, it's no longer an engine you want, but because it's not visible from the plug holes does not mean it is an engine you do want, it just means you need to move on to the more invasive, from the sump, boroscope.

groovzilla

Scoping from top has worked for me. And try getting a seller to allow an oil sump plate removal BSI.
So Petza would you have purchased either one of the 2 997's I had scoped showing those marks on cylinder walls??
I was advised not to bt 2 reliable shops.