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#1149 | |
Senior Member
Join Date: Sep 2017
Drives: 16' WWB
Location: Austin, TX
Posts: 175
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Quote:
My shifter is stock... it rattles a ton in upper RPMs, need to find out why. |
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#1150 | |
Wears Pants
Join Date: Apr 2019
Drives: 14 FRS K24 swap - SOLD
Location: Bella Vista, AR
Posts: 559
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Quote:
So do you like the x-force? Pretty jazzed with mine as the exhaust note is perfect for street and when you stab the go pedal. Same on shifter buzz. Highway around 3500-4000 RPM seems to be the annoying spot which coincides with highway average speeds. I was hoping it was my shifter extension but nope. Was also hoping it was just the stock shift knob but pretty sure that's not it either. I still have a stock shifter shortened that I plan to get welded in hopes it may fix it once and for all. Unfortunately installing it with the trans already installed may not be possible. Stock trans bushing without the poly insert helped a ton though. |
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The Following User Says Thank You to captain awesome For This Useful Post: | funkjaw (07-11-2022) |
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#1151 | |
Senior Member
Join Date: Sep 2017
Drives: 16' WWB
Location: Austin, TX
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Quote:
So I was thinking about removing the whiteline insert but I have been hesitant because I figured Kpower put them in there for a reason, right? Ionno. You seem to not have any issues? |
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#1152 | |
Wears Pants
Join Date: Apr 2019
Drives: 14 FRS K24 swap - SOLD
Location: Bella Vista, AR
Posts: 559
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Quote:
On the street where I put most of the miles I like it without the insert. In autocross however the drivetrain moves way too much. It's tolerable at best because it allows the trans to flop over enough to touch their trans bracket. I notched mine to relieve it but I still get just a slight hint of noise on aggressive left hand turns. ![]() ![]() This is after trimming but I think it could use a hair more. ![]() I may just go back the the STI mount as it was somewhere in between on cabin vibes. |
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The Following User Says Thank You to captain awesome For This Useful Post: | funkjaw (07-11-2022) |
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#1153 | |
Senior Member
Join Date: Sep 2017
Drives: 16' WWB
Location: Austin, TX
Posts: 175
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#1154 |
Senior Member
Join Date: Jan 2015
Drives: 2013 toyota 86
Location: Nashville tn
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So I found two of my TB bolts snapped off yesterday. Luckily I was able to get both out. I'm starting to wonder if my intake coupling is to stiff & not giving enough play when my engine moves. My intake is pretty damn stiff with very lil wiggle room.
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The Following 4 Users Say Thank You to hedtrip For This Useful Post: | endless_pain (07-13-2022), funkjaw (07-12-2022), Irace86.2.0 (07-17-2022), RedReplicant (07-14-2022) |
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#1155 | |
Senior Member
Join Date: Sep 2017
Drives: 16' WWB
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Quote:
![]() But to answer your question, I think these bolts need to be swapped with something higher grade ( I don't remember what grade they come.. ) |
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The Following User Says Thank You to funkjaw For This Useful Post: | endless_pain (07-13-2022) |
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#1156 | |
Senior Member
Join Date: Aug 2015
Drives: None
Location: Arizona
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I noticed it is very easy to over torque those bolts. Mine backed out after about an hour of run time so I blue loctited them in (and just about every single bolt I touched, along with paint marking).
Also, if this is going to be a worry then maybe something like a Vibrant HD clamp or cutting down the intake tube so there is more flex area in the coupler might be the way. Quote:
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#1157 |
Senior Member
Join Date: Jul 2015
Drives: 2017 Hot Lava 86
Location: Ohio
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I don't think I ever mentioned that I have been having issues with my throttle body bolts as well. I wasn't actually running the kpower bolts, I have a Grams throttle body that I used on my fa20, and I believe I reused those allen head bolts. I've had the bolts come loose a couple times, and most recently when I started hearing a leak at the throttle body there were two bolts missing. Both of the bolts were actually broken off inside the adapter.
Last edited by Ebush; 07-13-2022 at 04:40 PM. |
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#1158 |
Senior Member
Join Date: Dec 2020
Drives: 2020 BRZ/86, 2020 BMW 330i
Location: PNW, USA
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Why people are having these crazy vibration issues with this engine? Is it 86/FRS/BRZ specific?
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#1159 |
Senior Member
Join Date: Jul 2015
Drives: 2017 Hot Lava 86
Location: Ohio
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It's hard to tell if vibration is the cause of the throttle body bolts, I'd say it's more likely that the motor has too much free play, and the intake tube has no free play. I'll most likely switch over to solid engine/trans mounts this winter. Maybe then I'll stop snapping bolts, cracking exhaust, and missing 2nd gear.
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#1160 | |
Senior Member
Join Date: Aug 2015
Drives: None
Location: Arizona
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Quote:
Lightweight flywheel Soft stock WRX rubber mounts Motor mounts are fairly close together (compared to say the S2000) Motor / trans fits tight in multiple spots Header that has questionable weld quality Intake tube that is fixed to the chassis with very little flex allowed by the coupler length Single piece aluminum driveshaft Just a number of things compounded. Some are easily fixed, some are not.
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The Following 5 Users Say Thank You to RedReplicant For This Useful Post: | Arthur-A (07-13-2022), Irace86.2.0 (07-13-2022), Jdmjunkie (07-13-2022), Kelse92 (07-18-2022), pope (07-13-2022) |
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#1161 | |
Senior Member
Join Date: Nov 2014
Drives: Fr-s
Location: MN
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Quote:
*edit: Beat^
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The Following User Says Thank You to redlined600 For This Useful Post: | Arthur-A (07-13-2022) |
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#1162 |
Senior Member
Join Date: Aug 2015
Drives: None
Location: Arizona
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If any of you have datalogged your car and done a full RPM pull with the engine at operating temperature please upload it to Google Drive and link it here. The log needs a pull at high throttle at to like 7500.
I have one usable one from Seth that looks good. I have another from someone else that didn't have a full pull so I couldn't do a comparison. I'm looking at oil pressure and oil temperature, I got another PM from someone that is seeing the same erratic pressure/temp as I am. I asked them for a log. I have a post at K20A (https://www.k20a.org/threads/oil-tem...ocation.228682) and I don't like the answer so far.
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