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indy roller rocker failure #3015232 02/14/22 03:11 AM 02/14/22 03:11 AM
Joined: Mar 2016 Posts: 157 wi F Furys OP member
Furys OP member F Joined: Mar 2016 Posts: 157 wi	we purchased a 426 hemi car,ran good till one day a hell of a noise,shut it down,pulled valve cover found a roller rocker broken,pin and roller came out,also noticed the intake rockers which are indy were not lined up with the valve stem,did some forget to shim these???are the stands on backwards???have no idea,need some help,here are some pics

Re: indy roller rocker failure [Re: 11secdart] #3015277 02/14/22 09:58 AM 02/14/22 09:58 AM
Joined: Aug 2005 Posts: 4,101 Yes S sixpakdodge master
sixpakdodge master S Joined: Aug 2005 Posts: 4,101 Yes	You can't compare the Indy/Dove aluminum rockers with the Indy Chromoly Hemi rockers. Whoever did the engine, did a piss poor assembly job from looking at the few photos. I would double check that all the stands are of the same heights, etc. The rockers definitely weren't set up correctly.

Re: indy roller rocker failure [Re: sixpakdodge] #3015302 02/14/22 11:09 AM 02/14/22 11:09 AM
Joined: Jan 2003 Posts: 14,497 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,497 So. Burlington, Vt.	Can’t really blame the rocker for failing on that one. 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

Re: indy roller rocker failure [Re: Furys] #3015311 02/14/22 11:43 AM 02/14/22 11:43 AM
Joined: Jan 2003 Posts: 31,029 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,029 Oregon	Whoever put the valvetrain together wasn't paying attention. Better pull the whole engine apart and check everything.

Re: indy roller rocker failure [Re: AndyF] #3015315 02/14/22 11:52 AM 02/14/22 11:52 AM
Joined: May 2019 Posts: 712 Lake Villa Il INTMD8 super stock
INTMD8 super stock Joined: May 2019 Posts: 712 Lake Villa Il	Originally Posted by AndyF Whoever put the valvetrain together wasn't paying attention. Better pull the whole engine apart and check everything. Agreed. Thread should be titled "engine builder failure" 69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700

Re: indy roller rocker failure [Re: AndyF] #3015334 02/14/22 01:03 PM 02/14/22 01:03 PM
Joined: May 2005 Posts: 1,980 Apollo, PA. B1MAXX top fuel
B1MAXX top fuel Joined: May 2005 Posts: 1,980 Apollo, PA.	Originally Posted by AndyF Whoever put the valvetrain together wasn't paying attention. Better pull the whole engine apart and check everything. That is putting it very mildly

Re: indy roller rocker failure [Re: INTMD8] #3015337 02/14/22 01:10 PM 02/14/22 01:10 PM
Joined: Mar 2005 Posts: 2,644 North Carolina sasquatch master
sasquatch master Joined: Mar 2005 Posts: 2,644 North Carolina	Yes I agree it needs to come out. Your rocker tip alignment is whack. MOST likely due to a pushrod rubbing problem that is common to those rockers. Instead of grinding for clearance they just moved the tip halfway off the valve. You need lash caps as well from the looks of it, again fairly common on hemi engines. From the looks of it you most likely got lucky that it did not drop a valve. Todd www.mopartsracing.com

Re: indy roller rocker failure [Re: Furys] #3015343 02/14/22 01:24 PM 02/14/22 01:24 PM
Joined: Jan 2003 Posts: 17,844 S.E. Michigan ZIPPY I Live Here
ZIPPY I Live Here Joined: Jan 2003 Posts: 17,844 S.E. Michigan	Dodged a bullet, could have been much, much worse. Who knows what else is messed up? Tear the whole thing down and start over. Rich H. Esse Quam Videri

Re: indy roller rocker failure [Re: sasquatch] #3015344 02/14/22 01:24 PM 02/14/22 01:24 PM
Joined: Dec 2006 Posts: 2,110 Byron, NY W.I.N. Racing top fuel
W.I.N. Racing top fuel Joined: Dec 2006 Posts: 2,110 Byron, NY	Originally Posted by sasquatch Yes I agree it needs to come out. Your rocker tip alignment is whack. MOST likely due to a pushrod rubbing problem that is common to those rockers. Instead of grinding for clearance they just moved the tip halfway off the valve. You need lash caps as well from the looks of it, again fairly common on hemi engines. From the looks of it you most likely got lucky that it did not drop a valve. Todd with this and all statments made prior... '01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd

Re: indy roller rocker failure [Re: Furys] #3015352 02/14/22 01:40 PM 02/14/22 01:40 PM
Joined: Jan 2003 Posts: 31,029 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,029 Oregon	There was a GTO with a fresh rebuilt 400 at the shop the other day. Owner was complaining about the engine making noise. Turns out the engine builder installed the wrong spark plugs (3/4 reach rather than 3/8 reach) and the tips of the plugs had hit the valves. The valves got dinged up, the pushrods got bent, the cam got wiped out and the whole motor needed to be torn down and rebuilt since it was full of cast iron dust. Moral of the story is that all it takes is one small thing to be wrong and an engine will start to self destruct.

Re: indy roller rocker failure [Re: W.I.N. Racing] #3017192 02/20/22 09:13 PM 02/20/22 09:13 PM
Joined: Mar 2016 Posts: 157 wi F Furys OP member
Furys OP member F Joined: Mar 2016 Posts: 157 wi	has lash caps,took aprt,getting some stage v rockers and stands,redoing it all,thanx

Re: indy roller rocker failure [Re: ZIPPY] #3017204 02/20/22 10:00 PM 02/20/22 10:00 PM
Joined: Aug 2003 Posts: 43,173 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,173 Bend,OR USA	Originally Posted by ZIPPY Dodged a bullet, could have been much, much worse. Who knows what else is messed up? Tear the whole thing down and start over. You may be able to shim the rocker arms to correct the misalignment on them Another reason I call them motors Hemiroids Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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