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Merc 420 to 525sc in a Formula 242.

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Old 11-29-2015, 03:53 PM
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I have aluminum brackets through bolted to the stringers with large backing plates. The rubber mount then bolts to that. My rubber mounts are crappy. I was going to replace them with these billet pieces. That way they would be ridged but remain adjustable.
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Old 11-29-2015, 04:07 PM
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Originally Posted by 79formula
I think you posted on the wrong thread.
NO he deleted those threads.
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Old 11-29-2015, 04:09 PM
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Originally Posted by 79formula
I have aluminum brackets through bolted to the stringers with large backing plates. The rubber mount then bolts to that. My rubber mounts are crappy. I was going to replace them with these billet pieces. That way they would be ridged but remain adjustable.
That is a nice piece there. And for your application will be great. The only thing I would do is go to McMaster Carr and order Nylock nuts to replace those nuts so they wont loosen up. Just a little insurance.

Last edited by Bawana; 11-29-2015 at 04:11 PM.
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Old 11-29-2015, 04:15 PM
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Good Call. Or a dab of loctite.
Originally Posted by Bawana
That is a nice piece there. And for your application will be great. The only thing I would do is go to McMaster Carr and order Nylock nuts to replace those nuts so they wont loosen up. Just a little insurance.
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Old 11-29-2015, 04:16 PM
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Originally Posted by Bawana
NO he deleted those threads.
Yup you were right it was another thread..My bad ... lets continue
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Old 11-29-2015, 04:20 PM
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On a few builds with mounts like that, I did try red loctite, but some did come loose. Then I switched to the nylock nuts and they never had a problem. Merc has those thin metal bend tabs but they are a pain in the a$$. And they are more money then the nylock nuts

Last edited by Bawana; 11-29-2015 at 04:22 PM.
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Old 11-29-2015, 05:46 PM
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run two nuts on the bottom side if you have enough room.
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Old 11-29-2015, 09:44 PM
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I was putting my shopping list together at Summitracing. I discovered that inconel is brand specific to Manley. Upon further research, my 420 may already have them. That assumes the builder that rebuilt it put inconels back in it. When I pull the heads off, how can I tell if they are Inconel already? And what valves should I put in if they are not Inconel?
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Old 11-29-2015, 10:05 PM
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Originally Posted by 79formula
I think you posted on the wrong thread.

Ooooopps. Yes, I meant to put it in the other thread.

Originally Posted by Bawana
NO he deleted those threads.
No thread was deleted. Just some posts of no value
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Old 11-29-2015, 10:17 PM
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Originally Posted by 79formula
I was putting my shopping list together at Summitracing. I discovered that inconel is brand specific to Manley. Upon further research, my 420 may already have them. That assumes the builder that rebuilt it put inconels back in it. When I pull the heads off, how can I tell if they are Inconel already? And what valves should I put in if they are not Inconel?
Inconel has been around since the 40s, with many different grades, there is even a company out there tat can 3d print with it.
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