IS F (2008-2014) Discussion topics related to the IS F model

ISF with IS350 Diff...

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Old 08-25-12, 03:35 PM
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obby
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suggestion noted. haha.. i didn't want to take apart my stock isf diff, but did thought about it..
Old 08-25-12, 03:38 PM
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MRxSLAYx
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Originally Posted by obby
suggestion noted. haha.. i didn't want to take apart my stock isf diff, but did thought about it..
Good stuff Obby. Quick question.... Have you ever lost to a JoeZ exhaust F?
Old 08-25-12, 03:50 PM
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well me and my buddy has all the same exact mods except he got an joez exhaust and i had no muffler and i was able to pull on him.. .
Old 08-25-12, 04:00 PM
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MRxSLAYx
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Originally Posted by obby
well me and my buddy has all the same exact mods except he got an joez exhaust and i had no muffler and i was able to pull on him.. .
Thanks. Just wondering as I was in the same boat when I had the same exhaust setup.

How did you hit the Top Speed with the new diff? Was it though the limiter or just the end of 8th gear?
Old 08-25-12, 04:17 PM
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^ i haven't max it out yet.. i believe the highest i when with the new diff was 130mph. I only read that it max out at 150mph.. also im not trying to hit that kind of speed on the street.
Old 08-25-12, 05:30 PM
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Is it Ok to drive in manual mode most of the time?
Old 08-25-12, 06:04 PM
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MRxSLAYx
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Originally Posted by obby
Is it Ok to drive in manual mode most of the time?
You shouldn't have a problem
Old 08-25-12, 07:33 PM
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Dv8tion388
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Nice!!
All the 1/4 mile gear heads in here!
To many people were sleeping on this mod. If I hadnt hit 11.3s so easy with nitrous then get **** for not having a 5 point, I would have put this in. I knew it would have make a huge diff.

Like I mentioned before. Get some xxr 522 17 or 18s and some MT DRs.
Hold on as you rocket off the line!
Buy my nitrous!!

Taking the R to the drags @ sears wed night, bring out the F's!

~Dv8
Old 08-25-12, 08:25 PM
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Put the info into a calculator and the differences look like this

Stock Diff

Stock ( 26'' Tire)
1. 39Mph
2. 66
3. 96
4. 122
5. 145
6. 179
7. 217
8. 261

My NT05R(27'' Tire)
1. 40 Mph
2. 68
3. 100
4. 127
5. 151
6. 186
7. 226
8. 271

IS350 Diff

Stock Tire
1. 28 Mph
2. 47
3. 69
4. 88
5. 105
6. 129
7. 156
8. 188

NT05R

1. 29Mph
2. 49
3. 72
4. 91
5. 109
6. 134
7. 162
8. 195
Old 08-25-12, 09:10 PM
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^ wow. thanks for sharing. What a different.
Old 08-25-12, 09:12 PM
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Originally Posted by Dv8tion388
Nice!!
All the 1/4 mile gear heads in here!
To many people were sleeping on this mod. If I hadnt hit 11.3s so easy with nitrous then get **** for not having a 5 point, I would have put this in. I knew it would have make a huge diff.

Like I mentioned before. Get some xxr 522 17 or 18s and some MT DRs.
Hold on as you rocket off the line!
Buy my nitrous!!

Taking the R to the drags @ sears wed night, bring out the F's!

~Dv8
I might have to consider that. Lol. Really want to time my car. How Often does the track open up for these kind of event?
Old 08-25-12, 10:17 PM
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Damn I need a ride ASAP lol
Old 08-25-12, 10:58 PM
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Dv8tion388
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Originally Posted by obby
I might have to consider that. Lol. Really want to time my car. How Often does the track open up for these kind of event?

Pretty much every Wednesday out at sears/infineon/Sonoma raceway.

~Dv8
Old 08-26-12, 04:21 AM
  #29  
Jowett
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Hello folks... first post. For those looking for a something a bit more everyday friendly, some of the LS 460 cars use a 3.13 gear ratio... It should fit. Anyone consider the the 12 bolt 8.7"/220 mm out of the Supra? If it bolts in, new axles would be needed... extra expense there.

Last edited by Jowett; 09-02-12 at 03:55 AM.
Old 08-26-12, 06:57 AM
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darbs242
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will an 06-2010 is350 carrier fit? are they all the same? there are quite a few of these around pretty cheap


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