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Cracked cylinder in my 340; fixable? #423901 07/30/09 01:38 PM 07/30/09 01:38 PM
Joined: Oct 2008 Posts: 157 Winlock, Wa F fshd4it OP member
fshd4it OP member F Joined: Oct 2008 Posts: 157 Winlock, Wa	I have a '67 340 that I bought a few years ago, complete and with all machine work done (but not assembled). I pulled it out of the bag this morning to get the casting numbers off it and found a 2.5-3" crack in #6 cylinder. If not for an ever-so-slight rust mark at the crack, I'm sure I never would have caught it. With all machine work done (align bore, bored/honed to 4.070,cam bearings installed, etc), I'm thinking a sleeve is the only way to fix it without investing a bunch more dough. Opinions? In order to know what you want, you'll probably have to find out what you don't want.

Re: Cracked cylinder in my 340; fixable? [Re: fshd4it] #423902 07/30/09 01:39 PM 07/30/09 01:39 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Sleeves are fine.

Re: Cracked cylinder in my 340; fixable? [Re: Dodgem] #423903 07/30/09 01:41 PM 07/30/09 01:41 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: Sleeves are fine.

Re: Cracked cylinder in my 340; fixable? [Re: 1_WILD_RT] #423904 07/30/09 02:06 PM 07/30/09 02:06 PM
Joined: Jul 2003 Posts: 1,593 USA V VS29H0B pro stock
VS29H0B pro stock V Joined: Jul 2003 Posts: 1,593 USA	my '71 340 Duster - # matching 340 - has one sleeve --- no problems at all! Like the women I have dated --- Always looking for a better deal ....

Re: Cracked cylinder in my 340; fixable? [Re: VS29H0B] #423905 07/30/09 02:28 PM 07/30/09 02:28 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	I recently helped a guy with his original numbers 1970 340 block, he had 2 split cylinders and sonic checked really thin on 2 others. In an effort to save the block he sleeved all 8 cylinders. Engine runs like a champ!

Re: Cracked cylinder in my 340; fixable? [Re: ScottSmith_Harms] #423906 07/30/09 02:30 PM 07/30/09 02:30 PM
Joined: Feb 2005 Posts: 4,884 Michigan MNobody master
MNobody master Joined: Feb 2005 Posts: 4,884 Michigan	Just asking but what about coolant leaks?

Re: Cracked cylinder in my 340; fixable? [Re: MNobody] #423907 07/30/09 02:38 PM 07/30/09 02:38 PM
Joined: Oct 2008 Posts: 157 Winlock, Wa F fshd4it OP member
fshd4it OP member F Joined: Oct 2008 Posts: 157 Winlock, Wa	Ah yes- a concern of mine also. How do they seal? And what about distortion in the two neighboring cylinders? Just clean up with a hone? Thanks for the replies- I'm feeling better already. In order to know what you want, you'll probably have to find out what you don't want.

Re: Cracked cylinder in my 340; fixable? [Re: fshd4it] #423908 07/30/09 03:25 PM 07/30/09 03:25 PM
Joined: Jan 2003 Posts: 10,757 North Dakota 6PakBee I Live Here
6PakBee I Live Here Joined: Jan 2003 Posts: 10,757 North Dakota	'67 340????? "We live in a time when intelligent people are being silenced so that stupid people won't be offended".

Re: Cracked cylinder in my 340; fixable? [Re: 6PakBee] #423909 07/30/09 03:41 PM 07/30/09 03:41 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Most 68 blocks were cast in 67

Re: Cracked cylinder in my 340; fixable? [Re: ScottSmith_Harms] #423910 07/30/09 04:12 PM 07/30/09 04:12 PM
Joined: Oct 2008 Posts: 157 Winlock, Wa F fshd4it OP member
fshd4it OP member F Joined: Oct 2008 Posts: 157 Winlock, Wa	Sorry, should have been more clear about that. I keep track of my engines/blocks by casting dates. By the way, this one is 6-19-67; am I correct in assuming that's pretty early? And yes, it's in the back of the truck right now on it's way to the shop for a sleeve. Wish me luck! In order to know what you want, you'll probably have to find out what you don't want.

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