Moparts Main Index | READ - Info & Help Page | Moparts Sponsors | Tech Archive

Forums Calendar Active Threads Search Forum Help
Previous Thread
Next Thread
Print Thread
Page 1 of 3 1 2 3
what happened???? #239304
02/28/09 10:06 PM 02/28/09 10:06 PM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
well i put the new cam lifters rockers and heads on. fired the motor up broke in the cam, then removed the valve covers re-adjusted the valves and took it for a spin. brought it back went to tripple check the valve adjustment and found 2 bent pushrods and the bent pushrods dammaged my new roller rockers.

the set-up isky solid flat cam 548 560 @ .020 264 272 dur using 1.6 i rockers and 1.5 exhaust isky pushrods hughes roller rockers isky springs 440 source heads all clearances were checked before assembly.

now my real question. it was the intake pushrod that bent on the previos hyd flat cam. and again the intake and exhaust on #5 again. could something be wrong with the lifter bores or a conn rod issue.????? it cant be a coincidence that it keeps bending pushrods on #5 only.

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: cmcgee123] #239305
02/28/09 10:28 PM 02/28/09 10:28 PM
Joined: Apr 2004
Posts: 12,339
somwhere
S
smokinwoody Offline
I Live Here
smokinwoody  Offline
I Live Here
S

Joined: Apr 2004
Posts: 12,339
somwhere
how are you adjusting the valves??what sequence do you follow...and how bad are they bent...I mean a little or..

and did you measure for push rod length
Re: what happened???? [Re: cmcgee123] #239306
02/28/09 10:30 PM 02/28/09 10:30 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Did you check your valve to piston clearance
Re: what happened???? [Re: smokinwoody] #239307
02/28/09 10:32 PM 02/28/09 10:32 PM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
i adjusted the valves with the intake and valley pan off the car, making 100% sure that the lifter was on the base circle before adjusting them to .022 intake and exhaust. and the pushrods are beeeeeeeeennnnnnnt just on cyl 5 though. i would think that if i adjusted the valves wrong. i would have done them all wrong and im not a weekend warior mechanic i am ase certified and have been doing nothing but working on engines for the last 7 years.

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: MR_P_BODY] #239308
02/28/09 10:34 PM 02/28/09 10:34 PM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
the proper way? no thats the only shortcut i took and it may have bit me big time. i will have the head off in about an hour and let you know if there was piston contact.

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: cmcgee123] #239309
02/28/09 10:40 PM 02/28/09 10:40 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
T
Thumperdart Offline
I Live Here
Thumperdart  Offline
I Live Here
T

Joined: Jul 2004
Posts: 19,318
State of confusion
I hope you figure it out.........let us know what you find cos this is twice in a row so, something`s not right. Just curious; what size p-rod(diameter) and thickness and, how many threads are showing below the rocker when adjusted?

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: what happened???? [Re: cmcgee123] #239310
02/28/09 10:43 PM 02/28/09 10:43 PM
Joined: Apr 2004
Posts: 12,339
somwhere
S
smokinwoody Offline
I Live Here
smokinwoody  Offline
I Live Here
S

Joined: Apr 2004
Posts: 12,339
somwhere
Quote:

i adjusted the valves with the intake and valley pan off the car, making 100% sure that the lifter was on the base circle before adjusting them to .022 intake and exhaust. and the pushrods are beeeeeeeeennnnnnnt just on cyl 5 though. i would think that if i adjusted the valves wrong. i would have done them all wrong and im not a weekend warior mechanic i am ase certified and have been doing nothing but working on engines for the last 7 years.



hey...I wasnt putting you down...things happen. .sorry your pushrods bent...it would piss me off too...
Re: what happened???? [Re: smokinwoody] #239311
02/28/09 11:17 PM 02/28/09 11:17 PM
Joined: Jan 2003
Posts: 1,278
Mission BC
10sec440 Offline
pro stock
10sec440  Offline
pro stock

Joined: Jan 2003
Posts: 1,278
Mission BC
Same heads and springs both times? I'd be testing the valve springs for sure.
Re: what happened???? [Re: smokinwoody] #239312
02/28/09 11:40 PM 02/28/09 11:40 PM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
im sory if i came off as rude to you i didnt mean it that way at all.

the head is off and there is no piston contact. however i am noticing small marks on all of the pushrods in the intake side 1.6 ratio. i think i may need to clearance the pushrod holes in the heads even more.

and no not same heads and springs. the whole top end "was" brand new 2k later and

the big problem now is there is quite a bit of metal flake in the oil. if i pull the motor out to check the bearings im just gonna stroke it. what do you guys think.

what should i do?
single choice
Votes accepted starting: 02/28/09 10:39 PM
View Results
nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: 10sec440] #239313
02/28/09 11:41 PM 02/28/09 11:41 PM
Joined: Sep 2003
Posts: 650
Kansas
R
racincuda Offline
mopar
racincuda  Offline
mopar
R

Joined: Sep 2003
Posts: 650
Kansas
Well it may seem really odd but a friend checking the stroke on his 440 crank found one journal off by .015 all others were within .005
He had no symptoms but he did have it reground to correct the factory oops
Re: what happened???? [Re: Thumperdart] #239314
02/28/09 11:44 PM 02/28/09 11:44 PM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
on the 1.6 ratio side they are pretty close im probably gonna get a little shorter pushrods for the intake side. they are 3/8 cro-mo isky pushrods 140$

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: racincuda] #239315
02/28/09 11:57 PM 02/28/09 11:57 PM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
well i already pulled off the head on the badly affected side and there was no piston to valve contact. the thing im worried about now is my bearings. i did notice a slight thumping in my left foot before i found the bent pushrods.

and the brand new oil is grey already with thin metal dust kinda like bearing particles.

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: cmcgee123] #239316
03/01/09 12:02 AM 03/01/09 12:02 AM
Joined: Nov 2004
Posts: 2,119
sc
T
tjmarcus1 Online content
top fuel
tjmarcus1  Online Content
top fuel
T

Joined: Nov 2004
Posts: 2,119
sc
i may have missed something, but you check for coil bind? or the retainer hitting the guide?
Re: what happened???? [Re: tjmarcus1] #239317
03/01/09 12:19 AM 03/01/09 12:19 AM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
well the springs are from isky matched to the cam and installed at the correct hieght so i would assume that there is no coil bind. and the heads are brand new

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: cmcgee123] #239318
03/01/09 12:26 AM 03/01/09 12:26 AM
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT Offline
Management Trainee
1_WILD_RT  Offline
Management Trainee

Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
Quote:

well the springs are from isky matched to the cam and installed at the correct hieght so i would assume that there is no coil bind. and the heads are brand new



But was that with a 1.6 ratio rocker? Retainer to guide clearance verified? Just cause parts are new doesn't mean they work together without double checking everything...

Re: what happened???? [Re: 1_WILD_RT] #239319
03/01/09 12:32 AM 03/01/09 12:32 AM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
sory should have fully explained the cam was specd for 1.6 ratio on the intake and the guides are clear to .700 lift @ 1.875 installed spring hiegth.

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: cmcgee123] #239320
03/01/09 12:32 AM 03/01/09 12:32 AM
Joined: Nov 2004
Posts: 2,119
sc
T
tjmarcus1 Online content
top fuel
tjmarcus1  Online Content
top fuel
T

Joined: Nov 2004
Posts: 2,119
sc
Quote:

well the springs are from isky matched to the cam and installed at the correct hieght so i would assume that there is no coil bind. and the heads are brand new

how much lift does the cam have? might be a good idea to check. at one time or another, we've all missed something.
Re: what happened???? [Re: tjmarcus1] #239321
03/01/09 12:34 AM 03/01/09 12:34 AM
Joined: Sep 2008
Posts: 219
so cal
C
cmcgee123 Offline OP
enthusiast
cmcgee123  Offline OP
enthusiast
C

Joined: Sep 2008
Posts: 219
so cal
the set-up isky solid flat cam 548 560 @ .020 264 272 dur using 1.6 i rockers and 1.5 exhaust isky pushrods hughes roller rockers isky springs 440 source heads all clearances were checked before assembly.

nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
Re: what happened???? [Re: tjmarcus1] #239322
03/01/09 12:34 AM 03/01/09 12:34 AM
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT Offline
Management Trainee
1_WILD_RT  Offline
Management Trainee

Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
Sorry but this statement "and the brand new oil is grey already with thin metal dust kinda like bearing particles." IMO means it has to come out...

Re: what happened???? [Re: cmcgee123] #239323
03/01/09 12:37 AM 03/01/09 12:37 AM

A
Anonymous
Unregistered
Anonymous
Unregistered
A



Quote:

sory should have fully explained the cam was specd for 1.6 ratio on the intake and the guides are clear to .700 lift @ 1.875 installed spring hiegth.



a 1.875 installed height does not guarantee clearance between the retainer and guide seals.
it's also obvious that you have pushrod interference. my guess is the interference made you lash the valves too loose. then the pushrods bounced around and got caught on the edge of the adjuster. voila, bent pushrods.
of course that's only a guess.
could have been sticky valve guides too, or any number of other things.

Last edited by DRAM_Perf_Only; 03/01/09 12:39 AM.
Page 1 of 3 1 2 3

Moderated by  Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer 
Privacy Policy · Forum Rules · Mark All Read Contact Us · Moparts




Moparts Main Index | READ - Info & Help Page | Moparts Sponsors | Tech Archive


Powered by UBB.threads™ PHP Forum Software 7.7.1