Shortening pushrods....looking for advice 1st timer
#2370527
09/14/17 03:08 AM
09/14/17 03:08 AM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
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Memphis
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I've got a set of pushrods that are too long....they are good Manton ones w removable ends, and they can be safely shortened upto .015....I've recently ordered a 12 inch dial caliper and gotten a ball bearing....to accurately measure them. I understand if I heat up the end of a pushrod tube, the end should pull out reasonably easily, then I was thinking I could chuck them in my drill press and push down against a grinding stone to shorten them. Does this sound like a workable plan? Any suggested ways to do it better? Does it matter which end I do this to?
Thanks for any and all help
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Shortening pushrods....looking for advice 1st timer
[Re: HemiRick]
#2370538
09/14/17 04:24 AM
09/14/17 04:24 AM
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Joined: Aug 2003
Posts: 43,123 Bend,OR USA
Cab_Burge
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I Win
Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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I think I was told by Manton employees that they could shorten most of there race pushrods up to .150, no more Call them for advice first Don't heat the ends up until you know your safe doing that
Last edited by Cab_Burge; 09/14/17 01:39 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Shortening pushrods....looking for advice 1st timer
[Re: Cab_Burge]
#2370722
09/14/17 01:55 PM
09/14/17 01:55 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
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Yes I called and asked its .150 they can be shortened not .015 my mistake.....So if I can get an end off/out this plans seems good. Any advice on getting an end out? As this seems to be the hard part....And yes to have shortened by Manton is only few dollars less than a new set.
(I was just thinking that it shouldn't be too hard to make a tool to carefully push the cup ends off the tubes if they are that tough)
Last edited by HemiRick; 09/14/17 02:24 PM.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Shortening pushrods....looking for advice 1st timer
[Re: dthemi]
#2370805
09/14/17 04:42 PM
09/14/17 04:42 PM
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Joined: Nov 2004
Posts: 3,544 Syracuse,NY
CompWedgeEngines
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I've shortened many sets of manton rods. You won't get the end out. The way shorten them is put them in the lathe. Grind a cut off tools thickness to the amount you want to shorten them. Run the cut off into the rod just under the insert. The insert is hard so when you hit it, no big deal. Usually harder than the tool you'll use. So you wind up with the thickness of your cutter removed from the length of the rod, and the insert bare in that spot. Then heat a little and press the insert deeper into the rod.
manton reams that press fit, and you'll keep your rod straight this way. Thats a good way to do it. A clean square end and counterbore are key to the pushrod, and obviously not bending them trying to get an end out.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Shortening pushrods....looking for advice 1st timer
[Re: HemiRick]
#2370944
09/14/17 09:52 PM
09/14/17 09:52 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
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Thank you DT Hemi, guess I'm calling my old friend w a lathe in his garage....this way does sound easy, consistent, and reasonably fool proof.
Is there a preferred end to do this to? Or does it not matter?
Last edited by HemiRick; 09/14/17 10:15 PM.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Shortening pushrods....looking for advice 1st timer
[Re: HemiRick]
#2371033
09/15/17 12:34 AM
09/15/17 12:34 AM
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Joined: Jan 2003
Posts: 15,976 Chilliwack B.C. Canada
RUNCHARGER
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I Live Here
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I had a guy shorten my Manton's. He never took the end off, just lathed it carefully and then shoved the tip in the rest of the way.
Sheldon
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