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Search: Posts Made By: Subsonic
Forum: Off-Topic Lounge [WARNING: NO POLITICS] 09-19-2023, 11:17 PM
Replies: 33
Views: 3,649
Posted By Subsonic
This is not a post for Unplugem because he won't...

This is not a post for Unplugem because he won't read it or watch the linked video or understand it if he did. It's for everyone else who's addicted to threads like these because we can't understand...
Forum: Off-Topic Lounge [WARNING: NO POLITICS] 08-24-2023, 07:23 PM
Replies: 1,040
Views: 112,839
Posted By Subsonic
It's quite clear that you did not read very far....

It's quite clear that you did not read very far. Do you know why a scientific paper, in order to create or explain a useful model would seek to simplify things? Did you read the NASA paper on a...
Forum: Off-Topic Lounge [WARNING: NO POLITICS] 08-04-2021, 06:40 PM
Replies: 4,614
Views: 485,568
Posted By Subsonic
If you press the Start/Stop button three times in...

If you press the Start/Stop button three times in quick succession the engine will stop even while you're still rolling.
Forum: AUSTRALIA 06-01-2021, 04:21 AM
Replies: 2
Views: 1,910
Posted By Subsonic
Short answer, yes you need one. You're in NSW so...

Short answer, yes you need one. You're in NSW so all the information you need is here including links to more specific source data at the end:...
Forum: AUSTRALIA 05-24-2021, 11:12 PM
Replies: 1
Views: 1,367
Posted By Subsonic
It's not an emissions test, it's a safety check. ...

It's not an emissions test, it's a safety check. you'll be fine with your headers fitted.
Forum: Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) 03-16-2020, 04:41 AM
Replies: 23
Views: 5,143
Posted By Subsonic
Looking at your photos, that is not the correct...

Looking at your photos, that is not the correct oil drain plug. The correct plug has a large flanged surface below the head that seals against the crush washer. It should look like this
...
Forum: BRZ First-Gen (2012+) -- General Topics 02-27-2020, 06:17 PM
Replies: 33
Views: 9,595
Posted By Subsonic
wondering if this really is good advice. I had a...

wondering if this really is good advice. I had a car years ago in which I neglected the plug change interval. As the plugs became worn the gaps grew, apparently causing the coil packs to work...
Forum: Tracking / Autocross / HPDE / Drifting 02-09-2020, 05:15 PM
Replies: 3
Views: 1,289
Posted By Subsonic
Pull the metal out of the tyre. If it doesn't...

Pull the metal out of the tyre. If it doesn't leak, race on. If it leaks, plug it and race on.

this has nothing to do with running a staggered setup or not. You obviously have the wrong wheel...
Forum: Engine, Exhaust, Transmission 01-14-2020, 10:45 PM
Replies: 30
Views: 12,269
Posted By Subsonic
I've heard, though I'm no expert, that one of the...

I've heard, though I'm no expert, that one of the problems with the FA20 (and most subaru H4 engines) is because the exhaust ports are so far apart, any exhaust manifold needs to stretch and shrink...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 12-30-2019, 08:05 PM
Replies: 41
Views: 7,372
Posted By Subsonic
I'm struggling to see your motivation for pads...

I'm struggling to see your motivation for pads other than the OEM. Your list of Uses and "What I'm looking for" below indicates that the stock pads would be perfect for you application.

I doubt...
Forum: Other Vehicles & General Automotive Discussions 12-15-2019, 10:00 PM
Replies: 110
Views: 13,923
Posted By Subsonic
Let's keep guessing :D Can't be a Van's,...

Let's keep guessing :D

Can't be a Van's, none have 27 gallon capacity. At 20 USg only the RV12 has a capacity under 40.

Rans S-20?
Forum: Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) 12-09-2019, 09:10 PM
Replies: 39
Views: 12,293
Posted By Subsonic
Thanks but I was looking for something local,...

Thanks but I was looking for something local, postage from the US to Australia is normally very high and negates any savings buying online or in bulk. 86MLR is in Australia too which is why I asked...
Forum: Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) 12-09-2019, 06:51 PM
Replies: 39
Views: 12,293
Posted By Subsonic
Do you have a link you can share? Michael.

Do you have a link you can share?

Michael.
Forum: Tracking / Autocross / HPDE / Drifting 11-26-2019, 02:15 AM
Replies: 299
Views: 74,036
Posted By Subsonic
Thanks for the response. Just dropped my order...

Thanks for the response. Just dropped my order in. Nice and not-too-rediculous shipping to Australia too. Really looking forward to setting this up in my car. Thanks so much for making is happen!...
Forum: Tracking / Autocross / HPDE / Drifting 11-25-2019, 03:44 AM
Replies: 299
Views: 74,036
Posted By Subsonic
A couple of questions from me that I don't see an...

A couple of questions from me that I don't see an answer too:

Is it possible to turn on and off any of the functions while driving? The video seems to indicate the pedal dance can only be...
Forum: Issues | Warranty | Recalls / TSB 03-07-2019, 05:49 PM
Replies: 7
Views: 2,172
Posted By Subsonic
There are literally a million things it can be,...

There are literally a million things it can be, so a diagnosis over the internet is going to be difficult. You could get a second opinion from another mechanic, or do an oil sample analysis which...
Forum: Scion FR-S / Toyota 86 GT86 General Forum 01-29-2019, 11:12 PM
Replies: 66
Views: 13,971
Posted By Subsonic
Like many others I sometimes park on an uphill...

Like many others I sometimes park on an uphill gradient and it always seems like a lottery if I can get the seat to stay forward while folding the seat to allow passengers in, or even if just...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 12-02-2018, 09:28 PM
Replies: 20
Views: 6,170
Posted By Subsonic
This is the first I've heard of any interference...

This is the first I've heard of any interference there with totally stock wheels. I have the same tyre on mine, (well, ventus v4 of the same size on a 7.5" rim) and they are not even close to...
Forum: Southern California 11-15-2018, 01:21 AM
Replies: 12
Views: 2,169
Posted By Subsonic
Since the 86 has no adjustable seat belt height...

Since the 86 has no adjustable seat belt height adjustment, the sash belt can chafe your neck especially for shorter occupants. The leather straps on the corners of the seat back are to be used...
Forum: BRZ First-Gen (2012+) -- General Topics 10-16-2018, 08:41 PM
Replies: 46
Views: 7,341
Posted By Subsonic
I won't disagree with you about advanced driving...

I won't disagree with you about advanced driving courses, but roads now are safer than they ever have been by any measure and continue to improve. According to...
Forum: AUSTRALIA 10-14-2018, 11:11 PM
Replies: 7
Views: 4,612
Posted By Subsonic
Diff oil service

Hi Guys,

My Australian delivered 86GTS requires a diff oil change at 45,000km. The manual gives us two options:

"Toyota Genuine Differential Gear Oil LT" or
"Other LSD gear oil that meets API...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 10-12-2018, 12:26 AM
Replies: 29
Views: 4,686
Posted By Subsonic
My 2015 does it too, with factory suspension etc....

My 2015 does it too, with factory suspension etc. In the old days we used to refer to it as axle tramp and it only happens at low road speeds when spinning the rear tyres. I get no such effect if...
Forum: Australia Classifieds 09-11-2018, 12:21 AM
Replies: 10
Views: 5,261
Posted By Subsonic
Without question, remove as many of your mods as...

Without question, remove as many of your mods as you can and sell them separately, for 2 reasons:

1: People really do prefer (in general) unmodified cars if given the option (as ZAZ says), and...
Forum: Engine, Exhaust, Transmission 07-16-2018, 12:03 AM
Replies: 104
Views: 24,654
Posted By Subsonic
Well, that has been a fun weekend, thanks all for...

Well, that has been a fun weekend, thanks all for your contributions to this discussion.



Thanks for that, I’ve corrected the first post to change to kg.m^2. I think the numbers stay the same...
Forum: Member's Car Journals 07-14-2018, 03:56 PM
Replies: 143
Views: 25,823
Posted By Subsonic
Going back through this interesting thread, can...

Going back through this interesting thread, can someone please explain the use of this blue bar please:



Subsonic
Forum: Engine, Exhaust, Transmission 07-13-2018, 05:22 AM
Replies: 104
Views: 24,654
Posted By Subsonic
I got the mass and polar moment of inertia from...

I got the mass and polar moment of inertia from the grimspeed website linked above, not calculated. I did convert into SI units, so I get (from the link) I=30.42 lbin^2 which converts to 0.0089021...
Forum: Engine, Exhaust, Transmission 07-13-2018, 04:29 AM
Replies: 104
Views: 24,654
Posted By Subsonic
I’ve tried to explain in post #1, but I’ll have...

I’ve tried to explain in post #1, but I’ll have another go. The things most relevant to the model, some of which you’ve listed are the mass and speed of the car, and the mass, moment of inertia and...
Forum: Engine, Exhaust, Transmission 07-12-2018, 10:39 PM
Replies: 240
Views: 37,700
Posted By Subsonic
I guess if you're building a new engine from...

I guess if you're building a new engine from scratch then it makes sense to reduce as much rotational inertia as possible, but modifying the FA20? See the new thread I created here:
...
Forum: Engine, Exhaust, Transmission 07-12-2018, 10:36 PM
Replies: 104
Views: 24,654
Posted By Subsonic
The real benefits of lightweight pulleys (quantified)

Hey all,

This subject has been bugging me since I joined this fine forum. Lots and lots of users on here promote the benefits of lightweight pulleys for our FA20 engine, claiming that the reduced...
Forum: Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 07-06-2018, 02:53 AM
Replies: 129
Views: 21,221
Posted By Subsonic
If you don't care to be technically correct in...

If you don't care to be technically correct in your posts, how do you expect any sort of help to your own discussion? Understeer is absolutely universally used to describe a condition where while...
Showing results 1 to 30 of 76

 
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