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Ripping out the opf material

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Old 05-27-2023, 02:47 PM
  #106  
jam996
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I get north amercian cars opf is not monitered and EU car is, but what about rest of the world?? Im in Dubai, How to look if the opf is monitered or not? Is there a sensor to look for?
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Old 05-27-2023, 04:51 PM
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Originally Posted by subshooter
I know that you have to retorque them after a heat cycle.
Maybe I was thinking about valve covers (they have a specific order)
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Old 05-27-2023, 05:36 PM
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Originally Posted by GrantG
Maybe I was thinking about valve covers (they have a specific order)
Any cover,valve covers,timing covers,water pumps,headers(exhaust manifolds),intake manifolds etc : the rule is simple. When you're removing the part release tension on the bolts from outside in and when you're installing the part torque from the middle out in a criss cross pattern. You can't go wrong when following these rules in any car...
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Old 05-31-2023, 02:27 PM
  #109  
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This has probably been unearthed in other thread, so my apologies for any duplicate info. The US 3RS models do not have OPF material in the headers. This morning I saw GT3 and RS headers side by side, and RS has no OPF material (vacant). The headers are identical otherwise.
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Old 05-31-2023, 03:03 PM
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Originally Posted by ShakeNBake
This has probably been unearthed in other thread, so my apologies for any duplicate info. The US 3RS models do not have OPF material in the headers. This morning I saw GT3 and RS headers side by side, and RS has no OPF material (vacant). The headers are identical otherwise.
I had not heard that - thanks!

Does the RS share same center muffler with GT3?
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Old 05-31-2023, 03:37 PM
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Wonder how the factory RS headers compare in price to aftermarket ones.
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Old 05-31-2023, 03:51 PM
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Originally Posted by 1RedHead
Wonder how the factory RS headers compare in price to aftermarket ones.
Certainly more than a wide bladed screwdriver…
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Old 05-31-2023, 04:31 PM
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Originally Posted by GrantG
Certainly more than a wide bladed screwdriver…
For as much as these cars cost, I am fine with paying the price for new headers and not having to put the chisel time in. Not worth the aggravation factor for me.
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Old 05-31-2023, 04:33 PM
  #114  
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Originally Posted by 1RedHead
For as much as these cars cost, I am fine with paying the price for new headers and not having to put the chisel time in. Not worth the aggravation factor for me.
Ok, then you probably don’t want to bother with the installation of a new one either (so why not have the mechanic do the chiseling?). Sounds like only a few more minutes labor than swapping for new ones.

Of course you can and should do whatever you like - just spitballing here...
Last edited by GrantG; 05-31-2023 at 04:37 PM.
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Old 05-31-2023, 05:51 PM
  #115  
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Originally Posted by ShakeNBake
This has probably been unearthed in other thread, so my apologies for any duplicate info. The US 3RS models do not have OPF material in the headers. This morning I saw GT3 and RS headers side by side, and RS has no OPF material (vacant). The headers are identical otherwise.
I'm not sure this is true. My dealer just received another customer car and replaced his exhaust with a Kline unit. The OEM header definitely had the OPF material in it.
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Old 05-31-2023, 06:35 PM
  #116  
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Originally Posted by ShakeNBake
This has probably been unearthed in other thread, so my apologies for any duplicate info. The US 3RS models do not have OPF material in the headers. This morning I saw GT3 and RS headers side by side, and RS has no OPF material (vacant). The headers are identical otherwise.
I would be very surprised if this is true.
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Old 05-31-2023, 07:03 PM
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You can be surprised then. How many 3RSs have you seen taken apart in the US getting ready for goodies? I could post pics, but they are not mine to share.
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Old 05-31-2023, 07:06 PM
  #118  
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Originally Posted by ShakeNBake
You can be surprised then. How many 3RSs have you seen taken apart in the US getting ready for goodies? I could post pics, but they are not mine to share.
What is the logic behind doing this for the 3RS and not the GT3?
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Old 05-31-2023, 07:17 PM
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18hp? Could be the same way in Europe. I dunno.
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Old 05-31-2023, 07:25 PM
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Originally Posted by ShakeNBake
18hp? Could be the same way in Europe. I dunno.
Europe requires the OPFs so that wouldn't be possible.
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