Mechanical Adjustable Rocker Arms - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer Mechanical Adjustable Rocker Arms

Print Thread

Mechanical Adjustable Rocker Arms #176887 12/28/08 12:37 AM 12/28/08 12:37 AM
Joined: Apr 2008 Posts: 97 Portland Oregon J JohnnyBeGood OP member
JohnnyBeGood OP member J Joined: Apr 2008 Posts: 97 Portland Oregon	If I decide to go with a solid cam in my 440 what rocker set up would be best? Adjustable Mechanical arms-I think someone here told me this wont work on a 440 only max wedge? So what would be the way to go using a solid cam? Thamxs

Re: Mechanical Adjustable Rocker Arms [Re: JohnnyBeGood] #176888 12/28/08 12:49 AM 12/28/08 12:49 AM
Joined: Aug 2003 Posts: 4,384 Madison Wi NTOLERANCE master
NTOLERANCE master Joined: Aug 2003 Posts: 4,384 Madison Wi	Youll get alot of opinions on this, but I will suggest three things...... 1. Dont buy cheap roller rockers, there are loads of horror stories with them. 2. I would suggest Isky/Crane ductile iroon rockers. Cheap and strong. 3. You didnt dpecify what cam and combo youre running, but if its really wild, youll need to step up to something serious. I used to care but....... things have changed

Re: Mechanical Adjustable Rocker Arms [Re: NTOLERANCE] #176889 12/28/08 01:26 AM 12/28/08 01:26 AM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: Youll get alot of opinions on this, but I will suggest three things...... 1. Dont buy cheap roller rockers, there are loads of horror stories with them. 2. I would suggest Isky/Crane ductile iroon rockers. Cheap and strong. 3. You didnt dpecify what cam and combo youre running, but if its really wild, youll need to step up to something serious. Spot on...

Re: Mechanical Adjustable Rocker Arms [Re: 1_WILD_RT] #176890 12/28/08 03:14 AM 12/28/08 03:14 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: Quote: Youll get alot of opinions on this, but I will suggest three things...... 1. Dont buy cheap roller rockers, there are loads of horror stories with them. 2. I would suggest Isky/Crane ductile iroon rockers. Cheap and strong. 3. You didnt dpecify what cam and combo youre running, but if its really wild, youll need to step up to something serious. Spot on... I also agree. I run the Isky ductile adjustable rockers on my 63 and my son has the Crane version on his Dart. Both have worked flawless on our mild builds. Ron Last edited by 383man; 12/28/08 03:15 AM.

Re: Mechanical Adjustable Rocker Arms [Re: 383man] #176891 12/28/08 10:35 AM 12/28/08 10:35 AM
Joined: Mar 2007 Posts: 3,277 West Coast, USA jbc426 master
jbc426 master Joined: Mar 2007 Posts: 3,277 West Coast, USA	There is a place up in Washington or somewhere that rebuilds, rebushes and bluprints the Isky Ductile Iron rocker arms. Heck, I still have a set of them down in the basement. The only problem with them I remember, was that they could gaul themselves and the rocker shaft. Once bushed and with a hardened shaft, I think they would be a great reliable set-up. 1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)

Re: Mechanical Adjustable Rocker Arms [Re: jbc426] #176892 12/28/08 02:14 PM 12/28/08 02:14 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: The only problem with them I remember, was that they could gaul themselves and the rocker shaft. Once bushed and with a hardened shaft, I think they would be a great reliable set-up. Bannana groove shafts take care of that issue, the same company that installs bushings also sells shafts... http://www.rockerarms.com/

Re: Mechanical Adjustable Rocker Arms [Re: JohnnyBeGood] #176893 12/28/08 05:36 PM 12/28/08 05:36 PM
Joined: Oct 2005 Posts: 8,872 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,872 Ontario, Canada	I had and liked the Isky's but had problems with the sides wearing on the shaft retainers. That was cured by canning the springs and using spacers - at the time there was nothing on the market so I used bronze bushings. Also, don't use stock shafts as they can go oval when tightened down and that's what causes the gauling of the inside of the rockers. Any good aftermarket shaft will cure the problem, you don't necessarily need grooved ones. TRW's worked like a charm.

Re: Mechanical Adjustable Rocker Arms [Re: 1_WILD_RT] #176894 12/28/08 10:19 PM 12/28/08 10:19 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: Quote: The only problem with them I remember, was that they could gaul themselves and the rocker shaft. Once bushed and with a hardened shaft, I think they would be a great reliable set-up. Bannana groove shafts take care of that issue, the same company that installs bushings also sells shafts... http://www.rockerarms.com/ excellent work and customer service

Re: Mechanical Adjustable Rocker Arms [Re: NTOLERANCE] #176895 12/29/08 01:41 AM 12/29/08 01:41 AM
Joined: Jan 2003 Posts: 5,439 So Cal Sinitro master
Sinitro master Joined: Jan 2003 Posts: 5,439 So Cal	Quote: Youll get alot of opinions on this, but I will suggest three things...... 1. Dont buy cheap roller rockers, there are loads of horror stories with them. 2. I would suggest Isky/Crane ductile iroon rockers. Cheap and strong. If you can find a set of the Isky rockers, go for it. However the Cranes are another story, Crane had a bad run for ductile iron rockers they were not hardened properly, the valve stem would wear into the contact point. We went through a long argument with Crane, at first they denied any quality problem then they conceded certain issues. This took several months of debating back/forth with Crane and eventually we tossed the rockers into the dumpster and installed Harland Sharps, never looked back. This was about a couple of years back, and hopefully now they have kleened up their BS. For me I will never use another Crane product, even if it was free for my weedwacker.. Just my ..

Re: Mechanical Adjustable Rocker Arms [Re: Sinitro] #176896 12/29/08 10:10 AM 12/29/08 10:10 AM
Joined: Jul 2003 Posts: 4,769 Holland MI Ottawa 2 2boltmain master
2boltmain master 2 Joined: Jul 2003 Posts: 4,769 Holland MI Ottawa	Does Iskendarian still make their iron rocker arms? Keep old mopars alive.

Re: Mechanical Adjustable Rocker Arms [Re: 2boltmain] #176897 12/29/08 10:53 AM 12/29/08 10:53 AM
Joined: Aug 2003 Posts: 4,384 Madison Wi NTOLERANCE master
NTOLERANCE master Joined: Aug 2003 Posts: 4,384 Madison Wi	Quote: Does Iskendarian still make their iron rocker arms? I had THOUGHT that as of recent years, isky and crane were the same rockers. Didnt one start making them for the other? I used to care but....... things have changed

Re: Mechanical Adjustable Rocker Arms [Re: NTOLERANCE] #176898 12/29/08 10:56 AM 12/29/08 10:56 AM
Joined: Sep 2006 Posts: 1,218 So Dak GOLDENCOMMANDO pro stock
GOLDENCOMMANDO pro stock Joined: Sep 2006 Posts: 1,218 So Dak	I just talked to Crane about this and they are providing them to Isky as well.

Re: Mechanical Adjustable Rocker Arms [Re: GOLDENCOMMANDO] #176899 12/29/08 11:08 AM 12/29/08 11:08 AM
Joined: Jul 2003 Posts: 4,769 Holland MI Ottawa 2 2boltmain master
2boltmain master 2 Joined: Jul 2003 Posts: 4,769 Holland MI Ottawa	Years ago (over 10?) the Iskys were visually different than the cranes. Like a rib along the top of the body. Man us Mopar guys really pay thru the $$ when we need to deviate from the stamped steel stockers. I remember my brother buying Harland Sharpes back in 1986 for his 440. Back then he spent 2 weeks pay for a set (around $375 in 1986). Adj after adj kept breaking. They kept sending new ones for free until finally all the bad adjusters were weeded out. Seems their vendor had a "FURNACE PROBLEM" and a bad batch of adjusters made it thru. That infamous re ocurring "furnace problem" has increased business for a company called Smith Brothers. Keep old mopars alive.

Re: Mechanical Adjustable Rocker Arms [Re: 2boltmain] #176900 12/29/08 11:19 AM 12/29/08 11:19 AM
Joined: Oct 2005 Posts: 8,872 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,872 Ontario, Canada	There are many things that are virtually identical except for the name on them. Isky and Crane rockers were no exception. However, Isky used a separate pressed-in hardened tip whereas crane cheaped out and just left the cast iron as the contact point. I'm no metalurgist but I doubt you can harden cast iron without it becoming too brittle for the application. In any case, the Cranes wore and the Isky's didn't. These days, with so many aluminum rollers on the market I'd be looking at a decent set of those. By the time you bush a set of used Indy's you'd be into them for more money than a new set of aluminum. There is nothing wrong with running an unbushed aluminum rocker on a GOOD shaft - which you'll need even with Isky's.

Re: Mechanical Adjustable Rocker Arms [Re: Stanton] #176901 12/29/08 06:40 PM 12/29/08 06:40 PM
Joined: Aug 2003 Posts: 4,384 Madison Wi NTOLERANCE master
NTOLERANCE master Joined: Aug 2003 Posts: 4,384 Madison Wi	Quote: There is nothing wrong with running an unbushed aluminum rocker on a GOOD shaft - which you'll need even with Isky's. True, but most "cheap" rockers today have needle bearings for the shafts. Heck even some of the good ones have bearings. Ive got just under $100 in my used set of isky rockers and hd mancini shafts. I used to care but....... things have changed

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1