Mine was bad after 50 hours. I bought the engine used with a log book. The story goes that the KR was wrecked by a moving company. Sold for parts and I got the engine. Tiny crack only found with die penetrant . Replaced with Great Plains.
Paul KR N7970K New Hampshire ----- Original Message ----- From: " phil brookman " <pjb1234...@yahoo.co. uk > To: " KRnet " < krnet @ mylist .net> Sent: Sunday, November 29, 2009 7:26:50 PM GMT -05:00 US/Canada Eastern Subject: Re: KR> HAPI Flywheels sure would like to hear all about those experiences with the hapi flywheels ... any chance of sharing phill uk ________________________________ From: "JMelvin106@ aol .com" <JMelvin106@ aol .com> To: krnet @ mylist .net Sent: Wed, November 25, 2009 12:34:38 AM Subject: Re: KR> HAPI Flywheels My experience with elongated dowel pin holes and cracked flywheels usually stems from under torque on the flywheel retaining bolt and/or undersize dowel pins. It is the only place on a VW that is safe to slightly exceed max torque value but not more than 10%. John Melvin El Paso In a message dated 11/24/2009 8:02:18 A.M. Mountain Standard Time, iflyavw @ msn .com writes: To date we have replaced 107 HAPI aluminum flywheels in the last 28 years. I would guess that 100 of them were 4 dowel versions. Most of the builders caught the problem via the service bulletin. The flywheel will start to elongate in the dowel pins holes and eventually crack between the holes which then lets the flywheel free spin so to speak. If memory serves, HAPI , the company was sold to Mosler Motors in 1988 -89 ish . This company then became Total Engine Concepts. So it is likely that many of the Mosler / TEC engines also had the acquired HAPI flywheel inventory installed on their engines also. Steve Bennett iflyavw @ msn .com _ ________________________________ ________________________________ Windows 7: I wanted simpler, now it's simpler. I'm a rock star. http :// www . microsoft .com/Windows/windows-7/default. aspx ?h= myidea ? ocid =PID247 27::T: WLMTAGL :ON: WL :en-US: WWL_WIN_myidea :112009 _ ________________________________ ______ Search the KRnet Archives at http :// www . maddyhome .com/ krsrch /index. jsp to UNsubscribe from KRnet , send a message to KRnet -leave@ mylist .net please see other KRnet info at http :// www . krnet .org/info. html _ ________________________________ ______ Search the KRnet Archives at http :// www . maddyhome .com/ krsrch /index. jsp to UNsubscribe from KRnet , send a message to KRnet -leave@ mylist .net please see other KRnet info at http :// www . krnet .org/info. html _ ________________________________ ______ Search the KRnet Archives at http :// www . maddyhome .com/ krsrch /index. jsp to UNsubscribe from KRnet , send a message to KRnet -leave@ mylist .net please see other KRnet info at http :// www . krnet .org/info. html
