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Old 12-01-2017, 09:38 AM   #1
Kyle_132
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Default Bad motor mounts on 17 wrx?

So as of recently Iíve been experiencing knock readings generally starting off in first and shifting to second. Obviously this isnít knock the engine isnít under any load. However, Iíve also noticed that I can feel my engine shake getting off the car in high load. It just seems far fetched due to the car only having 10k and only having a pro tune and intake. Just wondering if anyone else has had any motor mount issues so early in the cars life. I want to upgrade them if I have to since Iím going to do downpipes egr/tgvs and boost controller in a week or two.
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Old 12-01-2017, 09:44 AM   #2
sth36
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Maybe check the pitch stop brace? The earlier FAs has a really weak brace that Subaru issued a bulletin on, but even the revised piece is only 2mm instead of 1mm. Long shot but it's possible it ripped off. It's right under your intercooler so it should be easy to inspect.
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Old 12-01-2017, 09:50 AM   #3
Kyle_132
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Yeah Iíve heard of those going bad imma check that out when I get the chance too
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Old 12-01-2017, 10:01 AM   #4
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Bad motor mounts are possible but not likely. Iím betting itís the tune. If you can, revert back to stock and see if you get the same phenomenon.
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Old 12-01-2017, 10:35 AM   #5
Kyle_132
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Well Iím going back to my tuner in a week or so...and Iím planning on getting retuned since Iím doing other stuff. The readings Iím getting very well could be just the weather change. Itís colder in the morning at this time of year and thatís when I see it more the car was tuned in very hot weather like 87 or 86.
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Old 12-01-2017, 10:35 AM   #6
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I live in Florida lmao
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Old 12-01-2017, 10:36 AM   #7
ericdet
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I'll second that it is likely the tune. In regards to the motor mounts though, I've seen quite a few threads about missing bolts from motor mounts on the new generation. To finding them in the undertray to completely missing.
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Old 12-01-2017, 11:16 AM   #8
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Quote:
Originally Posted by Kyle_132 View Post
I live in Florida lmao


Me too, also with a tuned 17 WRX. Whoís your protuner?
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Old 12-01-2017, 11:18 AM   #9
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Default Bad motor mounts on 17 wrx?

Quote:
Originally Posted by ericdet View Post
I'll second that it is likely the tune. In regards to the motor mounts though, I've seen quite a few threads about missing bolts from motor mounts on the new generation. To finding them in the undertray to completely missing.
Good to know ericdet, had no idea some were not tightened at the factory. They look like a pain to reach, too.


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Old 12-01-2017, 11:59 AM   #10
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Quote:
Originally Posted by ericdet View Post
I'll second that it is likely the tune. In regards to the motor mounts though, I've seen quite a few threads about missing bolts from motor mounts on the new generation. To finding them in the undertray to completely missing.
first time i hear about this

regardless, the stock motor mounts and trans are made of chewing gum, i suggest replacing them to perrin or groupN. best 2 mods i've done, and i've done a lot of mods. a lot of people on these forums seem to underestimate the difference beefier mounts make. not an easy installation (engine mounts) but so, SO worth it.
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Old 12-01-2017, 03:33 PM   #11
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Iím probably going to change the mounts regardless Iím tuned by mgw~ machines gone wild in Miami
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Old 12-01-2017, 05:42 PM   #12
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Quote:
Originally Posted by Kyle_132 View Post
Iím probably going to change the mounts regardless Iím tuned by mgw~ machines gone wild in Miami


Sort of off topic at this point, but how do you like them?
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Old 12-01-2017, 09:10 PM   #13
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Theyíre pretty solid Mikey tunes down there sometimes. From what Iíve been told theyíre better with the EJ platforms and 4g63/4b11. The fa20 is still new to them but their tunes are still pretty solid yet generally more conservative on the FA20s than the other engines. Which I honestly donít mind my wrx is a daily
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Old 12-01-2017, 10:03 PM   #14
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Yes, conservative is good. 10 extra hp on a street car if youíre sacrificing reliability just isnít worth it.
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Old 12-02-2017, 10:22 AM   #15
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I completely agree..
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Old 12-03-2017, 03:55 PM   #16
RussianTiny
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Quote:
Originally Posted by mishapopa View Post
first time i hear about this



regardless, the stock motor mounts and trans are made of chewing gum, i suggest replacing them to perrin or groupN. best 2 mods i've done, and i've done a lot of mods. a lot of people on these forums seem to underestimate the difference beefier mounts make. not an easy installation (engine mounts) but so, SO worth it.


Which did you choose for your motor mounts? I have group N pitch and tranny mounts and I like em
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Old 12-10-2017, 03:51 PM   #17
cdhissong
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my 2015 sti broke a motor mount around 26K but it was replaced under warranty. I only launched the car maybe 10 times. only mod was COBB stage 1. was disappointed in the broken mount but at least the dealer fixed it without any questions.
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Old 12-11-2017, 10:38 AM   #18
mishapopa
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Quote:
Originally Posted by RussianTiny View Post
Which did you choose for your motor mounts? I have group N pitch and tranny mounts and I like em
I have GroupN for all the mounts except the motor mounts are Perrin. I hate dealing with the cross member studs and simply like Perrin's design more. Also they're polyurethane so they'll last and are a little stiffer than GroupN motor mounts.
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