View Poll Results: Top end rebuild?
Yes - <50k miles
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9
5.26%
Yes - 50-75k miles
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9
5.26%
Yes - 76-100k miles
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10
5.85%
Yes - 101-125k miles
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4
2.34%
Yes - >125k miles
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3
1.75%
No - <50k miles
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19
11.11%
No - 50-75k miles
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38
22.22%
No - 76-100k miles
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34
19.88%
No - 101-125k miles
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23
13.45%
No - >125k miles
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22
12.87%
Voters: 171. You may not vote on this poll
Poll: Top end rebuild?
#1
Drifting
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Let's see if we can get some facts on the table for top end rebuilds![order](https://rennlist.com/forums/graemlins/order.gif)
Two groups:
1) No rebuild and how many miles are currently on your car, and
2) Yes you had a rebuild and how many miles were on the car at the time.
![order](https://rennlist.com/forums/graemlins/order.gif)
Two groups:
1) No rebuild and how many miles are currently on your car, and
2) Yes you had a rebuild and how many miles were on the car at the time.
#4
Agent Orange
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
113K miles on the original engine of my '96 Carrera. Oil consumption is minimal. Last month I drove to Montreal and back followed by Indiana and back (close to 2600 miles altogether) with no oil consumption to speak of. Did pick up a few new rock chips though
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
#6
Three Wheelin'
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Yep - Previous owner at 110k miles. Poor guy. Cost him over $16k. Car failed smog and the dealership told him a valve job was the fix. As a side benefit, my engine bay looks pretty darn new as they took most the engine apart and resealed it. Have not had a drop of oil hit my floor yet. Kind of makes me think I got cheated out of the true Porsche ownership experience without the oil leaks.
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#8
Drifting
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Interesting.
I think we need more resolution for no >125kmiles
98k, no rebuild, kicks @$$ and only 1.5 qts between oil changes (5k miles) (I keep it between min an 1/4 on dipstick - barely registers on gauge)
I think we need more resolution for no >125kmiles
98k, no rebuild, kicks @$$ and only 1.5 qts between oil changes (5k miles) (I keep it between min an 1/4 on dipstick - barely registers on gauge)
#9
Instructor
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The car was running fine but At 87K I had the top end done to thoroughly get at the SAI ports, 5 were completely clogged. Replaced valve guides and a bunch of other parts too. One of the cams had significant scoring on a lobe so those were replaced along with lifters.
#11
RL Community Team
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Unfortunately the poll won't give us insight as to if the top end rebuild was necessary in all cases or the diagnosis was due to oil overfill related symptoms. I guess the message here is that if your car is consuming oil and you may also have other OBDC or running symptoms. Reduce your oil fill by a quart or so and see if your oil consumption is reduced. If the consumption subsides you may simply need to fill with a little less oil at your next fill and see if your intake needs a little cleaning from oil ingestion.
Andy
PS, not sure how to measure oil that is below the dip stick. I guess one could fashion a homemade dip stick from a fish tape and calibrate it to their car.
Andy
PS, not sure how to measure oil that is below the dip stick. I guess one could fashion a homemade dip stick from a fish tape and calibrate it to their car.
#13
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Oil type and interval got nothing to do with top end rebuild due to valve guides. (ZDDP is another issue.) Porsche 3.6 engine always have the valve guide issue. No pattern, rhyme, or reason when/if they show up. Search around. I believe Steve Weiner has commented on this.
I think the 3.2 Carreras is also prone to the valve guide issue. Remember reading an article somewhere about a 3.2 owner having to do a top end with about 30K miles on the clock.
I think the 3.2 Carreras is also prone to the valve guide issue. Remember reading an article somewhere about a 3.2 owner having to do a top end with about 30K miles on the clock.
#14
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Oil type and interval got nothing to do with top end rebuild due to valve guides. (ZDDP is another issue.) Porsche 3.6 engine always have the valve guide issue. No pattern, rhyme, or reason when/if they show up. Search around. I believe Steve Weiner has commented on this.
I think the 3.2 Carreras is also prone to the valve guide issue. Remember reading an article somewhere about a 3.2 owner having to do a top end with about 30K miles on the clock.
I think the 3.2 Carreras is also prone to the valve guide issue. Remember reading an article somewhere about a 3.2 owner having to do a top end with about 30K miles on the clock.
Chuck
#15