Well, I am worried now about premature valve guide wear, the car still looks like new. I just did a leak down test and it came at 3%-3%-3.1-3.4%-4%-11%

 

Hey, I think you are on to something here (on something?).....now, should the holes be under the leaks, or the drip points....which will be somewhat different locations at 200mph!

 

Wow, see what happens when you don't do a search first?

 

A bald faced lie with respect to 993s, but the gospel with respect to 964s. When I removed the engine cover on my 964, I was able to reclaim enough oil to resurface my driveway. Not a drip after three years of 993 ownership.

Notice my attempt to hijack this tired thread with an even more tired topic. So, which is the better car, a 964 or a 993?

 

Well the 964 was the last hand made 911 and therefore is much more solid than a 993, have you ever heard the thump when you shut the door on the 964? Also the 993 had the wiring harness recall issue, and now I hear about premature valve guide wear, which means that with only 110k miles I might have to do a top end overhaul

Bull is that picture on your avatar made at the same track as mine, only when there used to be grass in the desert?

 

Only a guy living in an oil-rich country could vote for the 964! Just be certain to buy up a supply of engine seals and name the car The Exxon Valdez!

Well, both of our avatar pictures are outside of the USA........but even I'm not old enough to go back to when the desert had grass!

 

I like this thread

Bull.

 

car has been running without any cover for the last few years.

max

 

WOW..now that's what I'm talking about.

 

Bull, you didn't tell him about replacing the bolts with titanium ones

 

I just had my 60K service done, and I had the engine tray left off. Not only did my car run cooler, but my love life improved as well.

 

Jean
I'm worried too.
I'm worried about who's going to replace Ray Calvo.

 

I just read this whole thread - and I'm laughing my a$$ off!!

Well, I removed mine after reading many previous threads.
The engine is running cooler, even in St. Louis heat and humidity.
The car runs so much better, I'm spending all my time and money on the slippery slope.
I'm spending WAY too much time on Rennlist, especially writing posts like this.
My love life hasn't improved.

But, I did just save a lot on my car insurance.


Jean - What was the outcome of that leak-down test results situation?

 

Max911 is my Hero!



The Mother of all Engine Trays!!

 

I was puzzled by the 11% leak in cylinder number 6, that my mechanic apparently didn't spot (with the number of cylinders being 6, one sometimes can miss 1 or 2 of them) I looked closely at the tray yesterday and it turns out that it is not well fitted. The only bolt remaining is at the cylinder 6 level.

Could it be be that all the other cylinders were properly "aired" since the tray was loose while number 6 was the only one well covered by the tray and therefore I have premature valve guide wear at 111.7k miles on cylinder 6?

Worth digging further, I will share the results with this great board.

Maybe this explains the instability on one side of the car at 150mph, and why I have one rear tire more worn out than that other? I bolted the tray properly now and will use my datalogger to compare.

Mike, I hear ya.