How does a red six survive a timing gear failure - Holden Technical Talk

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Fastlane » Holden Forums » Holden Technical Talk » How does a red six survive a timing gear failure

How does a red six survive a timing gear failure

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81837		#1 Posted : Sunday, 6 October 2013 4:44:50 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 25/05/2007(UTC) Posts: 206		I've just looked at a mates bike engine after the timing chain let go, lots of bent valves and smashed pistons. Why does this not happen to the old red six? They just stop! Is there enough clearance at TDC to allow an open valve? Regards


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peter_flane		#2 Posted : Sunday, 6 October 2013 9:50:29 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 22/05/2005(UTC) Posts: 1,384		You got it. Non interference engine. The motor just stops producing power, but still turns. Replace the stripped gear and it will run again.
		If it is old or rare - Cut it! http://www.ehlimo.com.au/


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The HKTG Garage		#3 Posted : Tuesday, 8 October 2013 6:06:52 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 16/09/2010(UTC) Posts: 410 Thanks: 12 times Was thanked: 2 time(s) in 2 post(s)		Yep, mine went doing 110 kph last year. I still use the same 186 as a daily. It hasn't seemed to of affected anything else.
		The HKTG Garage. The Home of HK HT HG Holden.
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davequey74		#4 Posted : Tuesday, 8 October 2013 6:49:04 AM(UTC)
Rank: Veteran Reputation: Groups: Veteran, Registered Joined: 25/11/2008(UTC) Posts: 1,496		I stripped a gear at 100k's, it was just like I turned the key off I towed the car home and replaced the gear that afternoon, I didn't even take the cam out! At the time (about 13 years ago) the new aluminum gear and timing case gasket was $40


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