Motor mounts: IRP vs. Full Function "soft"
#1
Motor mounts: IRP vs. Full Function "soft"
I'm over due for motors mounts. I've done some reading and the IRP mounts seem like a popular. I've also heard good things about the FF mounts: the design looks looks like an improvement over factory to me. What has your experience been?
#3
RX-7 Bad Ass
iTrader: (55)
Either is a good way to go. The full function mounts cost more since they are the whole arm and they shave off a decent amount of weight.
If you have the original mounts with the 1 aluminum arm, the FF mounts may be a good way to go since you won't have to source a steel arm for the new mount.
Regardless either is a great option.
Dale
If you have the original mounts with the 1 aluminum arm, the FF mounts may be a good way to go since you won't have to source a steel arm for the new mount.
Regardless either is a great option.
Dale
#4
Either is a good way to go. The full function mounts cost more since they are the whole arm and they shave off a decent amount of weight.
If you have the original mounts with the 1 aluminum arm, the FF mounts may be a good way to go since you won't have to source a steel arm for the new mount.
Regardless either is a great option.
Dale
If you have the original mounts with the 1 aluminum arm, the FF mounts may be a good way to go since you won't have to source a steel arm for the new mount.
Regardless either is a great option.
Dale
I wonder what grade polyurethane the IRP mounts are. The FF "soft" are 68A. Difficult to compare though since they are of a difference design.
#5
I just took a look at the FF installation instructions and they are saying that oil pan removal is necessary. Looking at the FSM I don't see why this would be necessary... And that is not something I particularly want to deal with. I was under the impression the job only really required supporting the motor from above, removing the under cover, unbolting the old mounts and throwing the new ones in. What am I missing?
Last edited by mkd; 02-14-20 at 03:10 PM.
#6
Frequent Tool Misplacer
iTrader: (1)
No experience with the IRP mounts, but I have the FF mounts. I've had these on my car for about a year until I lost that engine, and I still like them so now they're going on the new engine. There is a noticeable increase in NVH at low RPM. However when the revs climb past 1500~2000 everything smooths out a lot but still not quite as smooth as stock. Feel is great, for me it just seemed to tighten everything up and give a little more of a confidence inspiring feel. I've got NO shifter movement at all.
As for the install, since disturbing the bolts that go through the pan could cause warping or damaging of the pan seal RTV, it may be prudent to remove and re-seal it. My first go-round my pan was already leaking badly so I took the thing off, resealed, and added a brace when I did the mounts just to get everything done at one time. This time, my new engine is fresh out-of-crate, and I installed the mounts without removing the pan (didn't want to have to mess-up and redo the factory seal).
As for the install, since disturbing the bolts that go through the pan could cause warping or damaging of the pan seal RTV, it may be prudent to remove and re-seal it. My first go-round my pan was already leaking badly so I took the thing off, resealed, and added a brace when I did the mounts just to get everything done at one time. This time, my new engine is fresh out-of-crate, and I installed the mounts without removing the pan (didn't want to have to mess-up and redo the factory seal).
Last edited by XanderCage; 02-14-20 at 08:27 PM.
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Narfle (02-14-20)
#7
As for the install, since disturbing the bolts that go through the pan could cause warping or damaging of the pan seal RTV, it may be prudent to remove and re-seal it. My first go-round my pan was already leaking badly so I took the thing off, resealed, and added a brace when I did the mounts just to get everything done at one time. This time, my new engine is fresh out-of-crate, and I installed the mounts without removing the pan (didn't want to have to mess-up and redo the factory seal).
My motor is all original with about 30K miles. I'm tempted to just bolt the bitch straight on... maybe that's asking for a leak, though...
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#8
Frequent Tool Misplacer
iTrader: (1)
An oil pan reseal is definitely doable, but a fun and easy job it is NOT. The biggest problem is that the subframe doesn't leave enough room to extract the oil pan, so you need to take it off. If the engine's staying in the car it's a major pain (again the only experience I've got is my own, perhaps others had an easier time of it).
Like I said though with my new engine I just bolted them on, and although its not in the car yet, I'm not concerned.
What you might do if you're apprehensive is contact IRP, and FFE and ask if they think it's really a necessary step.
Like I said though with my new engine I just bolted them on, and although its not in the car yet, I'm not concerned.
What you might do if you're apprehensive is contact IRP, and FFE and ask if they think it's really a necessary step.
Last edited by XanderCage; 02-14-20 at 09:53 PM.
#9
An oil pan reseal is definitely doable, but a fun and easy job it is NOT. The biggest problem is that the subframe doesn't leave enough room to extract the oil pan, so you need to take it off. If the engine's staying in the car it's a major pain (again the only experience I've got is my own, perhaps others had an easier time of it).
Like I said though with my new engine I just bolted them on, and although its not in the car yet, I'm not concerned.
What you might do if you're apprehensive is contact IRP, and FFE and ask if they think it's really a necessary step.
Like I said though with my new engine I just bolted them on, and although its not in the car yet, I'm not concerned.
What you might do if you're apprehensive is contact IRP, and FFE and ask if they think it's really a necessary step.
I know what they will say, "we cannot guarantee the oil pan will not leak" with no additional information
I can't imagine everybody re-seals the oil pan when putting motor mounts on...
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mkd (11-10-20)
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