|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
05-27-2015, 03:48 PM | #57 |
Senior Member
Join Date: Aug 2013
Drives: BRZ
Location: Denver, CO
Posts: 845
Thanks: 677
Thanked 396 Times in 264 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
|
It's more convenient.. I doubt you would need new bearings if you used your stock pumpkin. Most people will get the IS300 pumpkin because it's nice to work on it nice and slow. Especially when it comes time to shim and measure and shim and measure and shim and measure and...
Did you read what @Dustin has done? http://www.ft86club.com/forums/showthread.php?t=54054 |
The Following 2 Users Say Thank You to fika84 For This Useful Post: | kodyo (05-27-2015), Top-Secret (05-28-2015) |
05-27-2015, 07:49 PM | #58 |
Senior Member
Join Date: Jan 2013
Drives: Scion FR-S
Location: Los Angeles
Posts: 686
Thanks: 597
Thanked 256 Times in 173 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
|
Nope. I think he is thinking that you buy the IS300 pumpkin and direct swap it. However, IS300 final drive ratios for both LSD options are lower than ours, great for FI, terrible for NA. Going to a higher final drive ratio in NA will give you an acceleration boost (at least it will feel that way). You'll have to shift quicker, but it won't feel too bad and likely worth it. Obviously a turboed car would also benefit from the boost in acceleration, but again, you may hit the top end of your shift really quickly. This is something a lot of turboed people experience on even the stock 4.10 final drive, so they will go with a 3.7/3.9 that the IS300 has.
So if you are staying NA, taking your current car/pumpkin to a shop would be cheaper than buying a new pumpkin and having them rebuild it for you. Especially if they reuse the bearings on the current setup, which they should be able to. |
The Following User Says Thank You to kodyo For This Useful Post: | Top-Secret (05-28-2015) |
05-28-2015, 01:38 PM | #59 | |
Senior Member
Join Date: Mar 2014
Drives: FRS monogram
Location: victoria BC
Posts: 184
Thanks: 10
Thanked 147 Times in 42 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Quote:
im NA and just wanted to know 'WHEN CHANGING THE FD' which route is cheaper because everyone seems to buy a new pumpkin first regardless of the FD they pick INSTEAD of just putting it in the 86 pumpkin |
|
05-28-2015, 01:43 PM | #60 | |
Senior Member
Join Date: Mar 2014
Drives: FRS monogram
Location: victoria BC
Posts: 184
Thanks: 10
Thanked 147 Times in 42 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Quote:
i know the IS300 and 86 pumpkin are the same part # so yes it should fit no problem, but because everyone seems to be doing it in a new carrier it just has me a little concerned that for some reason it might not work or i was missing something as to why its better to get a new carrier i would be taking it to a shop and have another vehicle to get around so down time was never an issue for me i just didnt want to spend the extra time and $300+ looking for pumpkin if i didnt have to |
|
05-28-2015, 02:39 PM | #61 | |
Senior Member
Join Date: Jul 2013
Drives: Scion FR-S A/T, Whiteout
Location: Seattle
Posts: 334
Thanks: 57
Thanked 221 Times in 90 Posts
Mentioned: 16 Post(s)
Tagged: 2 Thread(s)
|
Quote:
Now if you're just looking to go taller for FI, simply swapping a whole IS300 carrier in is the most cost effective way to do it. There's no need to modify it at all; it's a straight swap. Keep in mind a junkyard unit may need a rebuild depending on its condition though. |
|
The Following User Says Thank You to PantsDants For This Useful Post: | kodyo (05-28-2015) |
08-08-2015, 09:02 AM | #63 |
Senior Member
Join Date: Jul 2013
Drives: 2013 FR-S
Location: US
Posts: 211
Thanks: 128
Thanked 70 Times in 49 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
I have an AT, and I really would like to add the 4.88's.!!
I was wondering if you are able to calibrate the speedometer after this? I know after changing gears the speedometer can be really off. I have contacted some reputable (3 competent) shops in my area and they weren't able to fix this. I was quite surprised. Any recommendations on how to fix the speedometer problem? This was one of the biggest issues I had that prevented me from doing the swap. |
08-08-2015, 10:58 AM | #64 | |
Senior Member
Join Date: Jul 2012
Drives: 2013 Asphalt FR-S Manual
Location: Whitby, ON, Canada
Posts: 6,716
Thanks: 7,875
Thanked 3,351 Times in 2,134 Posts
Mentioned: 99 Post(s)
Tagged: 1 Thread(s)
|
Quote:
__________________
Light travels faster than sound, so people may appear to be bright until you hear them speak... flickr |
|
08-08-2015, 08:22 PM | #65 |
Senior Member
Join Date: Jan 2013
Drives: Scion FR-S
Location: Los Angeles
Posts: 686
Thanks: 597
Thanked 256 Times in 173 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
|
Yup, no speedometer problems changing FD. Only issue I've ever heard of is gear number indicator no longer accurate for MT.
|
08-08-2015, 08:53 PM | #66 |
Senior Member
Join Date: Mar 2015
Drives: 2014 GT86
Location: Latvia, Riga
Posts: 4,333
Thanks: 696
Thanked 2,085 Times in 1,436 Posts
Mentioned: 53 Post(s)
Tagged: 1 Thread(s)
|
There was gear number indicator of MT? :/
|
08-08-2015, 10:04 PM | #67 | |
Senior Member
Join Date: Jul 2013
Drives: 2013 FR-S
Location: US
Posts: 211
Thanks: 128
Thanked 70 Times in 49 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Thanks for that!!! Looks like I got something new on the list. Thanks! I was actually quite surprised to hear reputable companies not have this answer. I like the idea 0f a 4.88 |
|
08-09-2015, 11:35 AM | #68 |
Senior Member
Join Date: Oct 2012
Drives: UK GT86
Location: UK
Posts: 3,040
Thanks: 185
Thanked 1,629 Times in 1,112 Posts
Mentioned: 155 Post(s)
Tagged: 1 Thread(s)
|
Yup, have it enabled on mine
__________________
.: Stealth 86 :.
Abbey Motorsport/K47 Tuned Sprintex 210 Supercharger Kodename 47 DJ: Soundcloud / Instagram / Facebook |
08-09-2015, 11:57 AM | #69 |
Senior Member
Join Date: Mar 2013
Drives: Sterling BRZ Ltd
Location: New England
Posts: 1,702
Thanks: 403
Thanked 1,389 Times in 671 Posts
Mentioned: 20 Post(s)
Tagged: 2 Thread(s)
|
I recently picked up a entire 3.91 open diff from a IS300 for $99. I'm going to swap it in as is to try out the ratio. If I like it I'll pull it apart and swap the ring and pinion into one of my brz diffs. I already have one I rebuilt with the Weir Rebuild kit.
Shelling out for a shim kit is paying off given how often I change and tinker with my car.
__________________
|
11-24-2015, 02:46 PM | #70 |
Member
Join Date: Jun 2015
Drives: 2014 BRZ Limited
Location: Southern Maryland
Posts: 64
Thanks: 3
Thanked 12 Times in 7 Posts
Mentioned: 1 Post(s)
Tagged: 2 Thread(s)
|
Does anyone have a link to the part # for the pinion bearings?
|
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Final Drive Discussion | JimmyMac | Engine, Exhaust, Transmission | 118 | 08-07-2017 10:18 PM |
Change gear ratio? | Afdad120108 | Engine, Exhaust, Transmission | 61 | 08-17-2016 10:44 AM |
Final Drive Calculations | wootwoot | Engine, Exhaust, Transmission | 34 | 12-19-2014 04:06 AM |
Change FD ratio to 4.56 by changing only pinion | peachch | Engine, Exhaust, Transmission | 1 | 08-31-2013 01:25 PM |
Correcting drive ratio for accurate speed | AlexTheGreek | Engine, Exhaust, Transmission | 25 | 12-05-2012 01:13 AM |