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07-11-2007, 07:29 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Erson Roller Rocker Adjustment Question
Neither the little 7/32" hex locknut in the middle, nor the the larger 5/8" adjusting nut, will budge using all the hand strength I can muster. Before I break out a larger tool, is there anything unusual about the Erson roller rockers that I should know about? That little 7/32" hex locknut in the middle essentially just "clicks" on and off to lock the adjustment, correct? And just how much torque should be on it? Here's a shot:
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07-11-2007, 08:11 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,391
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Not Ranked
Use a longer wrench. Just break loose the nut. The hex thing in the middle is the adjuster...it's what contacts the pushrod cup. That's how you adjust your lash. You run that middle hex adjuster down till you get the lash you want, then you tighten the nut with the wrench.
Just use a longer wrench...or take a dead blow and tap the end of the wrench that's on it now.
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07-11-2007, 08:14 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Thanks, just what I needed to know.
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07-11-2007, 06:12 PM
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CC Member
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Join Date: Dec 2004
Location: toronto,
ont
Cobra Make, Engine: 408w 500 h.p. 550 ft.lbs
Posts: 562
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What is that black $hit laying there????
That can't be engine oil. Not after spending all that money on the engine you would not let the oil get that bad would you?
Oil is VERY cheap compared to the engine costs, do not spare the fresh oil.
Craig |
07-11-2007, 06:19 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
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Originally Posted by cdnus
after spending all that money on the engine you would not let the oil get that bad would you? |
Of course not. That oil only has about 700 miles on it. It has a healthy addition of GM Camshaft & Lifter Prelube added to it to bring the ZDDP percentage up to .12% -- that changes the color of the oil. But have no fear, I have my oil regularly analyzed by Blackstone Labs  . |
07-11-2007, 06:45 PM
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CC Member
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Join Date: Dec 2004
Location: toronto,
ont
Cobra Make, Engine: 408w 500 h.p. 550 ft.lbs
Posts: 562
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Whew!!!
I am relieved to hear that. ( not that my opinion matters )
I often read here about guys who try to stretch their oil changes as if they were putting a gazillion miles a year on their cars, glad to see this is not so in this case.
Craig |
07-11-2007, 07:45 PM
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Senior Club Cobra Member
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Join Date: Jan 2001
Location: Santa Barbara, Ca.,
ca
Cobra Make, Engine: R.U.C.C. with a 427FE, toploader
Posts: 1,435
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Not Ranked
That 5/8 mechanic's choice is cute  Just like a wrench...only smaller 
__________________
Mike Z
Nothing sucks more than that moment during an argument when you realize you’re wrong. 
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07-12-2007, 04:29 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
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Originally Posted by Ibr8k4vetts
That 5/8 mechanic's choice is cute Just like a wrench...only smaller |
.....Ouch.  |
07-12-2007, 04:31 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
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Tough crowd, isn't it Patrick? |
07-12-2007, 05:56 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
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Originally Posted by Ibr8k4vetts
That 5/8 mechanic's choice is cute Just like a wrench...only smaller |
Quote:
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Originally Posted by blykins
Tough crowd, isn't it Patrick? |
How you like me now? 
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07-12-2007, 06:15 AM
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Join Date: Dec 2001
Location: Louisville,
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Cobra Make, Engine: I'm Cobra-less!
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hehee....I figured you'd take a picture of a 1/2" drive impact wrench sitting on the nut...... |
07-12-2007, 06:11 PM
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Senior Club Cobra Member
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Join Date: Jan 2001
Location: Santa Barbara, Ca.,
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Cobra Make, Engine: R.U.C.C. with a 427FE, toploader
Posts: 1,435
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Quote:
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Originally Posted by patrickt
How you like me now?
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I see you got yourself whole set of Polish wrench's 
__________________
Mike Z
Nothing sucks more than that moment during an argument when you realize you’re wrong.
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07-12-2007, 06:21 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
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Originally Posted by Ibr8k4vetts
I see you got yourself whole set of Polish wrench's |
No, they came that shiny... I didn't have to polish them.  |
07-12-2007, 06:48 PM
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Senior Club Cobra Member
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Join Date: Jan 2001
Location: Santa Barbara, Ca.,
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Cobra Make, Engine: R.U.C.C. with a 427FE, toploader
Posts: 1,435
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Not Ranked
Quote:
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Originally Posted by patrickt
No, they came that shiny... I didn't have to polish them. |
Nicely played Before anyone gets upset about the "Polish" comment my last name is Zielinski
__________________
Mike Z
Nothing sucks more than that moment during an argument when you realize you’re wrong.
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07-12-2007, 07:24 PM
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CC Member
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Join Date: Jan 2002
Location: Fairmont,
WV
Cobra Make, Engine: PPMC 427 SO
Posts: 82
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Patrick, after this adjustment you can go for some time with out adjusting again. I did mine at around 700-800 miles. I now have over 10,000 miles and they are still with in spec. , and that's with a flat tapet cam. I also went to Amsoil Series 2000 0W-30 at that adjustment.
Great rockers.
Jim
__________________
Jim Cinalli 
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07-13-2007, 06:55 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,280
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It's obviously a metric crescent wrench! That's why it doesn't quite fir the nut..
__________________
Too many toys?? never!
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07-13-2007, 07:07 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
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Originally Posted by undy
It's obviously a metric crescent wrench.. |
Speaking of wrenches, once I cracked the seemingly excessive torque that was on the locknut this little wrench set made adjusting them a reasonably quick job. Had I been able to find my bump switch it would have been even quicker. If these Erson's do indeed hold their lash the way everyone says they do I can't see why anyone would go with hydraulics. I'll check them again in the Spring and see.
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