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View Poll Results: Have you experienced the SPI valve seat failure?
Yes 5 45.45%
No 6 54.55%
Voters: 11. You may not vote on this poll

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Old 08-25-2013, 01:07 PM   #21
Pegasus8891
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Dropped at 117k
 
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Old 08-26-2013, 12:21 AM   #22
WrenchTurnerDave
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Quote:
Originally Posted by Pegasus8891 View Post
Dropped at 117k
wow, we're always going to be dealing with this
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Old 10-03-2013, 12:43 PM   #23
Texas Ranger
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114xxx and no dropped valve seat, though I have heard a lot about em'
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Old 02-18-2014, 02:34 PM   #24
cameron 55
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2 valves dropped around 99,000 miles so I rebuilt the cylinder head
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Old 02-18-2014, 03:28 PM   #25
Martyman
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2001 SPI with 118000 and cyl 4 dropped 2 weeks ago.
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Old 03-08-2014, 05:46 PM   #26
Dmperfection
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My '02 dropped #4 intake at 170k miles. Yes, I was a skeptic and believed that only those engines that weren't well taken care of were susceptible. I always ran clean synthetic oil, cooling system flush every year and kept up with t-stat replacements. I was wrong. Ironically, three months ago, I seriously considered pulling out the head in a preventative effort. I was skeptical and decided against it. One week ago, it happened to me. Now I'm tearing it apart.
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Old 03-11-2014, 10:14 PM   #27
shjeeper
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I replaced the head with one from headsonly.com at about 110k miles as preventative maintance. It cost ~$1000 altogether since I replaced quite a few other things while I was at it, but well worth it in the end. I especially like the fact that I no longer worry about when the valve seat will drop!

It's been running for 15k miles or so now. :)
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Old 03-24-2014, 08:44 PM   #28
Wulff45
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143K. I just swapped a new head on, due to a valve seat loose enough to keep the valve from closing part of the time. Had a shiny mark around the edge of the valve relief in the piston, where the valve/seat was making slight contact, and the seat is visibly cracked at the point it is closest to the exhaust valve.

No, it didn't drop a seat, but it was about to do so.

I purchased a new head casting from J&C Enterprises, ( http://www.ebay.com/itm/350998600428...84.m1423.l2649 ) extremely pleased with it. Highly recommended.
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