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 1Likes
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1
Post By fastd
04-29-2016, 11:01 AM
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CC Member
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Join Date: Sep 2008
Location: Austin,
TX
Cobra Make, Engine: ERA FIA, 351W
Posts: 765
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Not Ranked
Flywheel Ring Gear Install
I have searched the internet more broadly to find this answer but I trust you guys a lot more:
I am replacing my flywheel ring gear on my 5 speed tremec; seems like heating in an oven is smarter, i.e. more controlled, than trying to heat it with a torch.
Any reason I shouldn't heat it to 450 degrees or so without affecting the metallurgy? Or any other reason? Anybody done it this way? What was your optimal temp?
Putting the flywheel in the freezer seems like it won't help much and maybe too much of a confrontation with a too hot ring gear...thoughts?
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04-29-2016, 04:19 PM
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CC Member
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Join Date: Aug 2010
Location: San Antonio Valley Ca,
ca
Cobra Make, Engine:
Posts: 1,275
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Not Ranked
Just heat 1/4 of the outer edge and drop it on. Doubt the oven thing would work.
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04-29-2016, 05:06 PM
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CC Member
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Join Date: Jun 2014
Location: Dallas,
TX
Cobra Make, Engine: ERA #812 427/482 FE
Posts: 495
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Not Ranked
You can safely heat it to 400 Fahrenheit without any metallurgical change. That should be enough to allow it to drop onto a room temperature flywheel. You will need to go from oven to flywheel pretty quickly, as the ring will cool quickly.
__________________
Chris
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04-29-2016, 09:08 PM
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Average Guy
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Join Date: Sep 2002
Location: Rushville,
IN
Cobra Make, Engine: red Shell Valley, white stripes
Posts: 579
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Not Ranked
flywheel gear install
I just put my new gear on my outdoor grille and turned the heat up. After a few minutes, I picked it up with a pair of pliers and dropped in on the room temperature flywheel. It fit easily and snugged up after just a few minutes. Twenty-four years later, it hasn't given any trouble.
__________________
When I said I wanted to be somebody, I probably should have been more specific...
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04-30-2016, 08:21 AM
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CC Member
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Join Date: Sep 2008
Location: Austin,
TX
Cobra Make, Engine: ERA FIA, 351W
Posts: 765
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Not Ranked
Update: I put the ring gear in the oven for 25 minutes at 425 degrees and put the flywheel in the freezer for the same amount of time.
The ring gear snugly fit right over the flywheel. Didn't have to hit with a hammer. Just slide over. I wasn't able to spin it when i got it on though. Would have like to been able to do that to make sure it seated well. Maybe 475 degrees would have been better.
Thanks.
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04-30-2016, 10:57 AM
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CC Member
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Join Date: Jun 2014
Location: Dallas,
TX
Cobra Make, Engine: ERA #812 427/482 FE
Posts: 495
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Not Ranked
You are either single or have a very tolerant wife. At my house I doubt an Cobra parts are going in the oven or the freezer, LOL.
Glad things worked out.
__________________
Chris
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04-30-2016, 12:26 PM
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CC Member
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Join Date: Aug 2010
Location: San Antonio Valley Ca,
ca
Cobra Make, Engine:
Posts: 1,275
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Quote:
Originally Posted by RockBit
You are either single or have a very tolerant wife. At my house I doubt an Cobra parts are going in the oven or the freezer, LOL.
Glad things worked out.
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Don't put a carburetor in the dishwasher either. |
04-30-2016, 05:08 PM
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CC Member
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Join Date: May 2006
Location: Portland,
OR
Cobra Make, Engine: ERA FIA, 1964 289->Webers
Posts: 3,689
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Not Ranked
Did it last summer. We used a torch. There are YouTube videos showing the process. I don't have a giant rosebud torch so it took a bit to get it heated up for removal but, it was a pretty simple operation, all said & done.
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ERA FIA 2088
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04-30-2016, 05:20 PM
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CC Member
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Join Date: Sep 2008
Location: Austin,
TX
Cobra Make, Engine: ERA FIA, 351W
Posts: 765
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Not Ranked
RockBit
Neither single or tolerant wife. Did in th am before she woke up.
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04-30-2016, 05:49 PM
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CC Member
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Join Date: Jun 2014
Location: Dallas,
TX
Cobra Make, Engine: ERA #812 427/482 FE
Posts: 495
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Not Ranked
Now that is funny.
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Chris
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04-30-2016, 06:30 PM
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Senior Club Cobra Member
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Join Date: May 2001
Cobra Make, Engine: A CSX Cobra,1966 GT350 and an '06 Ford Heritage GT
Posts: 1,829
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Quote:
Originally Posted by fastd
RockBit
Neither single or tolerant wife. Did in the am before she woke up.
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I would advise you to be careful--they have spies EVERYWHERE! 
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"I think we have more machinery of government than is necessary, too many parasites living on the labor of the industrious." Thomas Jefferson
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