Labor Day Putting down your wrenches or time for MORE wrenching? 
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Mod | | | Forums66 Topics128,005 Posts1,055,253 Members48,418 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2013 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2013 Posts: 36 | What are the chances that the harmonic balancer that i plan to reuse form and older 235 (53-55) will work on a newer 235 (58-62)? and there is a decent groove worn into it by the old seal over the years. I have a new seal in the timing cover whats the chances that it won't leak?
I neeed to heat it up and drive it on right? thanks Mike.
51 3100, 235 purs with T5 swap 54 Belair 305 & 700r4 few more months to go I'm on a 1950 3100 that needs very little. A true barn find $1000
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | not sure about years of application, but someone will ... and there's a thing called a 'speedi sleeve' available to take care of the wear groove, use one or it will leak
Bill | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | If you have a 53-55 truck harmonic balancer it should be OK on a newer 235 that has a 3/8" fan belt. Use the fan shroud with a diameter that matches the engine/generator.
A worn area on the crankshaft snout where the cover-seal rides can be easily remedied with a "speedi-sleeve" or other similar repair sleeve (Rockauto.com as one that presses on and needs no adhesive/sealant).
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | No you don't need to heat it up to install it. You need to drive it on with a big hammer. | | | | | Joined: Dec 2005 Posts: 2,557 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 2,557 | I used this speedi sleeve on my 1956 235 engine.I used a block of wood and lightly tapped it on with a mallet.I used the sealant that came with it. Tim 1951 3100 Chevrolet1951 Chevrolet Suburban CarryallImage"A house is built with boards and beams. A home is built with love and dreams." "Look deep before you leap !!!" / "Everything is Everything" "If I say a mouse can pull a house, hitch him up"
| | | | | Joined: Dec 2008 Posts: 898 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 898 | I just put a piece of mechanics wire behind where the seal seats in the cover, to shim it out a shade. That way the seal rubs on a new spot on the balancer that isn't worn. I guess you could call me a tight butt !!!!!
Brian 1955.2 3100 Truck The older I get the more dangerous I am!!!!! | | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | What do you think you're hammering against?
Yes, it's the thrust bearing. | | | | | Joined: Sep 2003 Posts: 1,820 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 1,820 | [quote=55 SHAKER]I just put a piece of mechanics wire behind where the seal seats in the cover, to shim it out a shade. That way the seal rubs on a new spot on the balancer that isn't worn. I guess you could call me a tight butt !!!!! [/quote]
I used some thick gasket material, cut it to fit under the seal that fits in the cover, to shim it out, also. Used some gasket sealer on the gasket material and it sealed it and shimmed it out. The gasket material is about 1/32" thick.
"Truckin' Around .......... Since 1937!" My name is Joe and I am addicted to Classic Country Music. I just can't hep myself.Operators are standing by to take your calls! Now cruising in the Passing Lane | | | | | Joined: Mar 2005 Posts: 1,513 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,513 | I neeed to heat it up and drive it on right? thanks Mike. I warm the hub on a hotplate so I can install with oven mitts instead of a hammer. I have a speedy sleeve on mine but it's mighty thin and think moving the seal a bit would have been a more permanent solution but have no leak so far. Also, welcome new guy from Hurst, Texas with 3 posts???
1952 1300 Canadian 1/2 ton restomod You Tube | | | | | Joined: Aug 2010 Posts: 775 'Bolter | | 'Bolter Joined: Aug 2010 Posts: 775 | I have a 216 and there are threads inside the crank shaft. You can put a threaded rod in the crank shaft and use a nut to press the harmonic balancer pully on. | | |
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