Engine mounts and subframe question.
09-29-18, 04:02 PM
#1
Engine mounts and subframe question.
I highly doubt this but, can the subframe shift over time, maybe because of potholes or other reasons?
If not then, do motor mounts settle after a few months, specifically the rrracing mounts?
I'm asking this because when I got my second set of headers installed by rrracing with their mounts a few months ago, everything was fine. Nothing rubbed or anything, no clearance issues. But recently I started having clearance issues so I lifted the car up and sure enough the headers are now hitting the subframe so something must have shifted around. It happens mostly when the car is cold, once it warms up, the clearance issue gets better.
What could have shifted? I'm even contemplating installing back the OEM mounts just to see if that's the issue.
btw the gold tape that rrracing installed in my mounts came off and became black (burned) because it stuck to the headers. People with the mounts should check their tape.
If not then, do motor mounts settle after a few months, specifically the rrracing mounts?
I'm asking this because when I got my second set of headers installed by rrracing with their mounts a few months ago, everything was fine. Nothing rubbed or anything, no clearance issues. But recently I started having clearance issues so I lifted the car up and sure enough the headers are now hitting the subframe so something must have shifted around. It happens mostly when the car is cold, once it warms up, the clearance issue gets better.
What could have shifted? I'm even contemplating installing back the OEM mounts just to see if that's the issue.
btw the gold tape that rrracing installed in my mounts came off and became black (burned) because it stuck to the headers. People with the mounts should check their tape.
Last edited by jat0223; 09-29-18 at 04:07 PM.
09-29-18, 04:14 PM
#2
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I highly doubt this but, can the subframe shift over time, maybe because of potholes or other reasons?
If not then, do motor mounts settle after a few months, specifically the rrracing mounts?
I'm asking this because when I got my second set of headers installed by rrracing with their mounts a few months ago, everything was fine. Nothing rubbed or anything, no clearance issues. But recently I started having clearance issues so I lifted the car up and sure enough the headers are now hitting the subframe so something must have shifted around. It happens mostly when the car is cold, once it warms up, the clearance issue gets better.
What could have shifted? I'm even contemplating installing back the OEM mounts just to see if that's the issue.
btw the gold tape that rrracing installed in my mounts came off and became black (burned) because it stuck to the headers. People with the mounts should check their tape.
If not then, do motor mounts settle after a few months, specifically the rrracing mounts?
I'm asking this because when I got my second set of headers installed by rrracing with their mounts a few months ago, everything was fine. Nothing rubbed or anything, no clearance issues. But recently I started having clearance issues so I lifted the car up and sure enough the headers are now hitting the subframe so something must have shifted around. It happens mostly when the car is cold, once it warms up, the clearance issue gets better.
What could have shifted? I'm even contemplating installing back the OEM mounts just to see if that's the issue.
btw the gold tape that rrracing installed in my mounts came off and became black (burned) because it stuck to the headers. People with the mounts should check their tape.
PPE headers tend to get close to the bottom passenger side of the subframe. In fact with stock mount cars, we always grind away a bit of the flange, but we haven’t had to do that yet with our mounts. It’s pissible there is some manufacturing variability. It’s something that can easily be solved by shimming the mounts just a bit, or if it’s touching the subframe where I think it is, just a minor material removal alleviates any touching.
Rafi
09-29-18, 04:32 PM
#3
PPE headers tend to get close to the bottom passenger side of the subframe. In fact with stock mount cars, we always grind away a bit of the flange, but we haven’t had to do that yet with our mounts. It’s pissible there is some manufacturing variability. It’s something that can easily be solved by shimming the mounts just a bit, or if it’s touching the subframe where I think it is, just a minor material removal alleviates any touching.
Rafi
How would I go about shimmying the mounts? With a washer or something like that?
09-29-18, 05:37 PM
#4
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I am not sure your name, but if we did the install you are more than welcome to come to the shop and it’s an easy fix.
Rafi
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