interesting PPI result o_O
Drifting
Joined: Aug 2010
Posts: 2,274
Likes: 3
Aite, Thanks guy. Learn something new everyday from you guys. Great info on rings and seal and compression numbers and stuff. I'm definitely running now . running to find another one with hopefully better ppi result as well as a better ppi test too. Even one with a bad engine runs so nicely, can't wait till I bump into a perfect one and feel the full power of a 993.
Drifting
Joined: Aug 2010
Posts: 2,274
Likes: 3
I suppose that was a real bad PPI then. The car was like 80 miles out of town so I had someone there bring the car to a porsche mechanic in that same little town 9 miles from the dealership. So I wasn't actually there to witness the PPI. We test drove it the weekend before this test, and thought it was rather smooth and nice . BUT, I admit though, we have yet to test what a really really perfect 993 should be since we have only tested one other one that was worse in comparison to this one....
eitherway, assuming *some* of those numbers are correct despite the awkward 80%. I'm pretty convince this is a pretty bad shape engine.
for $20k, although I shouldn't expect much, but still, this seems just a little too risky. instead of paying $6k or something top end rebuild the next mile I move, I rather find one at $26k with rebuild done or just simply doesnt need one.
* side note: would anyone do a retest if you were in my situation? assuming you like the cosmetic condition of the car as much as i do.
eitherway, assuming *some* of those numbers are correct despite the awkward 80%. I'm pretty convince this is a pretty bad shape engine.
for $20k, although I shouldn't expect much, but still, this seems just a little too risky. instead of paying $6k or something top end rebuild the next mile I move, I rather find one at $26k with rebuild done or just simply doesnt need one.
* side note: would anyone do a retest if you were in my situation? assuming you like the cosmetic condition of the car as much as i do.
Yeah, I would get a second opinion second compression and leakdown test since the compression and leaking down do not support each other.
Not to say there isn't a problem, there may be one; however, the numbers don't exactly had up.
You just don't find a good 993 for $26K I have looked.
Wallflower
Rennlist Member
Rennlist Member
Joined: Aug 2004
Posts: 5,552
Likes: 3
From: NW Arkansas
I had a similar result on an earlier 911 I was looking at a few years ago. One cylinder was way off from the others, in the 70 - 75 range. They initially thought the test was bad and kept retrying it and I finally told them to stop and put it back together, walking away. Even if the 80 is wrong, aside from cylinder 1, the rest are suspect as well.
I'd walk... keep looking.
I'd walk... keep looking.
Pro
Joined: Sep 2009
Posts: 628
Likes: 228
From: Lake Zurich, IL
I just had a PPI done on a 95' 993 with 127k miles that was going for 20k...
this is my first time getting a PPI on a 993
leakdown n compression was this...
7% /210
15%/210
20%/210
12%/210
15%/210
80%/210
Yes that is... eighty... eight zero, not a typo ....
I admit I'm not an expert in this, but if I'm not mistaken this is really bad. Percentage should be under 5. So this basically means it needs a rebuild, right?
In the report it did say something about some carbon flake for that cyclinder #6 . I read on some of you guys' post that 80% is probably just a blob of carbon build up in there, and a "spirited drive" and some techron will fix it up...
Interesting how compression are all 210... From other test that you guys have posted before, shouldn't the number be slightly different ( but in the same range). So all these 210 seems very suspicious...
Funny how at the end of the report is that it says that you should not hesitate to purchase this car.
I guess thats what I should expect from a 20k 993 anyway
Anyway, I'm running away from this now so don't worry about me
and the hunt continues!
this is my first time getting a PPI on a 993
leakdown n compression was this...
7% /210
15%/210
20%/210
12%/210
15%/210
80%/210
Yes that is... eighty... eight zero, not a typo ....
I admit I'm not an expert in this, but if I'm not mistaken this is really bad. Percentage should be under 5. So this basically means it needs a rebuild, right?
In the report it did say something about some carbon flake for that cyclinder #6 . I read on some of you guys' post that 80% is probably just a blob of carbon build up in there, and a "spirited drive" and some techron will fix it up...
Interesting how compression are all 210... From other test that you guys have posted before, shouldn't the number be slightly different ( but in the same range). So all these 210 seems very suspicious...
Funny how at the end of the report is that it says that you should not hesitate to purchase this car.
I guess thats what I should expect from a 20k 993 anyway
Anyway, I'm running away from this now so don't worry about me
and the hunt continues!I find it strange that the compression would be exactly the same on all cyl., plus it seems high to me. I'd need to investigate what typical compression numbers in a 993 are, I was guessing 170-180?
Having said that, 210 PSI is a lot for a leakdown test too. Regardless, the 80% leak down on one cyl is NOT a good sign....
Instructor
Joined: Aug 2002
Posts: 189
Likes: 0
From: Miami, FL
I just had a ppi done on a 95 993 and it came back:
180
160
165
170
160
170
The car has 121k miles. Is this considered decent and normal for the mileage?
Jon
castorjs@yahoo.com
180
160
165
170
160
170
The car has 121k miles. Is this considered decent and normal for the mileage?
Jon
castorjs@yahoo.com
Rennlist Member
Joined: Jul 2007
Posts: 5,941
Likes: 165
If the car is in excellent shape otherwise, you might be wise to offer, say, $18K based on the leakdown results, spend the $6K to have the engine rebuilt, and then have a 993 with a new top end for about $25K. That should take care of one of the bigger expenses, and should provide for many years of trouble-free motoring.
Thread Starter
Racer
Joined: Jan 2011
Posts: 400
Likes: 0
From: California
^ I was considering that. But psychologically, I don't like the idea of buying a "broken" car , and have to "fix" it right away, even though I would have the peace of mind knowing that I did the repair and would not have to worry about it ever ever again .
with patience, i'm sure the "right" one will come to me
with patience, i'm sure the "right" one will come to me
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Rennlist Member
Joined: Jul 2007
Posts: 5,941
Likes: 165
Well, every 15 year old Porsche for sale will have something "broken", or in need of repair soon. Whatever you do, make sure you budget a few thousand dollars for repairs that you may need to make within the first year of ownership. Best case scenario is it doesn't need anything, and you can spend the money on mods.
Good luck. The search is half the fun.
Good luck. The search is half the fun.