Anyone had trouble with Wiseco teflon coated 440 pistons?
#2661159
06/01/19 10:37 AM
06/01/19 10:37 AM
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Joined: Jun 2008
Posts: 2,336 Ball Ground, Georgia
Dixie
OP
top fuel
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OP
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Joined: Jun 2008
Posts: 2,336
Ball Ground, Georgia
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Hey guys, got real problem here, and want to see what your experience has been. A recently built engine of mine is suffering low oil pressure. After not being able to find the cause externally, my builder pulled the engine to tear it down to see what he could find internally. Upon tear down he wasn't happy with the condition of the main bearings and is rechecking everything on the engine. During this tear down he discovered the Wiseco teflon coated pistons he purchased was losing the teflon coating. He pulled pieces of it out of the engine. He purchased them from Summit and they told him 30 day warranty on pistons. The engine was at the machine shop waiting in line for 3 months, so there goes their warranty. He called Wiseco and they were non-commital about resolving the issue or taking responsibility. Thier response was to send them back and when they got time they'd look at them and might or might not fix the problem.
So, my questions are:
1) Has anyone else experienced this issue with Wiseco pistons? Wondering if I got a one of bad set or is this a known problem?
2) My engine builder was told he could soda blast the teflon off the pistons and use them. Has anyone done this? I don't see an issue with it, but wanted to check experiences here.
I'm trying to get the car ready for Carlisle and we were on track until this experience.
Thanks!
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Re: Anyone had trouble with Wiseco teflon coated 440 pistons?
[Re: Clanton]
#2662145
06/04/19 09:09 AM
06/04/19 09:09 AM
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Joined: Jun 2008
Posts: 2,336 Ball Ground, Georgia
Dixie
OP
top fuel
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OP
top fuel
Joined: Jun 2008
Posts: 2,336
Ball Ground, Georgia
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You could put a red scotchbrite pad on a palm sander and get it off and clean to reuse the pistons. Worth a shot! Sad, that Wiseco isn't interested in fixing the issue.
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