289 bent push rod

Emberglo66 · 04-16-2004, 11:09 AM

Just built my 289, less than 100 miles it started clicking and progressively got worse. Took valve cover off and found bent pushrod. Could someone give me some idea what could cause this and what I have to do to fix it.

hobgoblin351 · 04-16-2004, 11:59 AM

If you're running an adjustable valvetrain and it was set too tight the pushrod would bend.

Emberglo66 · 04-16-2004, 12:20 PM

OK I could have done that, I'm not perfect by a long shot, I.ll drop another one in and try again. Could that have destroyed my lifter too?

Emberglo66 · 04-16-2004, 12:25 PM

I just thought a little more about what you said, The valve train is hydraulic, I did put the hydraulic version of the HI-PO cam in it when it was rebuilt, also put the heavier double springs.

Rev · 04-16-2004, 07:06 PM

Yes, a too tight adjustment or binding valve train could bend a push rod . None others were bent though, right? I would just replace it, adjust it correctly, and try again.

Rev

04-16-2004, 11:09 AM	#1
Emberglo66 Registered Member Join Date: Apr 2004 Location: Flintstone GA Posts: 6	289 bent push rod Just built my 289, less than 100 miles it started clicking and progressively got worse. Took valve cover off and found bent pushrod. Could someone give me some idea what could cause this and what I have to do to fix it.

04-16-2004, 11:59 AM	#2
hobgoblin351 Registered Member Join Date: Sep 2002 Location: NYC Posts: 245	If you're running an adjustable valvetrain and it was set too tight the pushrod would bend. __________________ 1970 Stang Conv: en:Boss351 (balanced/blueprinted) mech cam(240*@.050/.540 lift) Scrw in studs/comp cams rllr rkr Mldn valves 2.19in 1.71ex ported polished cc'd hrdnd ex Keith Black FT pistons(10.25/1) Weiand Excellorator manifold Holley700 DP mech 2nds MSD 6 box and Dis Headers/2 1/2 inch duels tr: modified FMX re:9-inch/3.89 limited slip

04-16-2004, 07:06 PM	#5
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	even with hydraulic? Yes, a too tight adjustment or binding valve train could bend a push rod . None others were bent though, right? I would just replace it, adjust it correctly, and try again. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

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04-16-2004, 12:20 PM	#3
Emberglo66 Registered Member Join Date: Apr 2004 Location: Flintstone GA Posts: 6	OK I could have done that, I'm not perfect by a long shot, I.ll drop another one in and try again. Could that have destroyed my lifter too?

04-16-2004, 12:25 PM	#4
Emberglo66 Registered Member Join Date: Apr 2004 Location: Flintstone GA Posts: 6	I just thought a little more about what you said, The valve train is hydraulic, I did put the hydraulic version of the HI-PO cam in it when it was rebuilt, also put the heavier double springs.