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Old 06-07-2012, 06:08 PM
Glenn Sedig Glenn Sedig is offline
Senior Member
 
Join Date: Feb 2011
Posts: 101
Default Insert life update

Put 13 more runs on the heads with the inserts for a total of 21 runs. Leak down is

1----90%
2----94%
3----97%
4----99%
5----99%
6----99%
7----95%
8----98%

Don't know whats up with cyl 1, Set the car up with alcohol and had problems all weekend. Maybe the cyl got washed down before we tested it. Also the motor was cold.

Alcohol runs cooler so I don't know if the insert life will be tested with the same stress as with gasoline. We have done a set of heads for a nitrious engine so may be able to get some info on that when it is back together.

So far the inserts in my heads are holding well.