Carbon driveshaft and short shifters - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Sapphireho · 07-14-2021, 01:20 AM

Quote:

Originally Posted by gpvecchi

Thanks for the suggestion!
Just to be sure, do you have the JDM TRD and not STi, right?

They are the same shifter, but yes, I have the JDM TRD shifter.

Ohio Enthusiast · 07-14-2021, 07:35 AM

Quote:

Originally Posted by gpvecchi

Just to be sure, do you have the JDM TRD and not STi, right?

The JDM TRD and STI short shifters are the same. It is the US TRD shifter that is different (and worse, according to all opinions).

NoHaveMSG · 07-14-2021, 11:51 AM

Quote:

Originally Posted by blsfrs

I have oem shifter with an aluminum Drive Shaft Shop shaft and have no problems. My U joints were bad and it seemed the logical to go with an upgrade. IMHO I did not see a huge advantage in going with carbon fiber.

Quote:

Originally Posted by FrickingReallySlow

I have a DSS aluminum 3" as well. How long did it take for the U-joints to fail? did you just replace them yourself with a U-joint remover fixture

How did you guys to get yours to stop vibrating? I have a DSS Aluminum as well and it is a hunk of shit. Has been balanced twice, vibrates terribly above 100mph. So bad I can't even see out of the rear view mirror. As far as I am aware, the light weight along with the thickness of the shaft material make it to where the critical speed is too low and it is not possible to resolve. Went back to stock. I won't even give this thing away, I will cut it up and toss it in the scrap dumpster.

Sapphireho · 07-14-2021, 12:43 PM

Quote:

Originally Posted by NoHaveMSG

How did you guys to get yours to stop vibrating? I have a DSS Aluminum as well and it is a hunk of shit. Has been balanced twice, vibrates terribly above 100mph. So bad I can't even see out of the rear view mirror. As far as I am aware, the light weight along with the thickness of the shaft material make it to where the critical speed is too low and it is not possible to resolve. Went back to stock. I won't even give this thing away, I will cut it up and toss it in the scrap dumpster.

What did DSS say about it?

NoHaveMSG · 07-14-2021, 12:43 PM

Quote:

Originally Posted by Sapphireho

What did DSS say about it?

Rebalance it.

gpvecchi · 07-14-2021, 05:20 PM

Quote:

Originally Posted by Sapphireho

They are the same shifter, but yes, I have the JDM TRD shifter.

Quote:

Originally Posted by Ohio Enthusiast

The JDM TRD and STI short shifters are the same. It is the US TRD shifter that is different (and worse, according to all opinions).

Many people think they are the same, but it's not. STi is 4 mm longer, TRD 8 mm.
Check comparison with stock one.

Ohio Enthusiast · 07-14-2021, 05:59 PM

Quote:

Originally Posted by gpvecchi

Many people think they are the same, but it's not. STi is 4 mm longer, TRD 8 mm.
Check comparison with stock one.

Whoa, cool! Meaning that the TRD is the bottom one and the STI is the middle one?

Do you happen to have the part numbers both them?

Sapphireho · 07-14-2021, 06:42 PM

Quote:

Originally Posted by gpvecchi

Many people think they are the same, but it's not. STi is 4 mm longer, TRD 8 mm.
Check comparison with stock one.

The two I had in my hands were identical. Doesn't matter. Any of them will work with a C.F. driveshaft.

StraightOuttaCanadaEh · 07-14-2021, 07:41 PM

Quote:

Originally Posted by NoHaveMSG

Rebalance it.

Mine also vibrates at that exact speed. Will get a carbon one eventually cause I like having a 1 piece ds

gpvecchi · 07-15-2021, 01:03 AM

Quote:

Originally Posted by Ohio Enthusiast

Whoa, cool! Meaning that the TRD is the bottom one and the STI is the middle one?

Do you happen to have the part numbers both them?

Exactly!
STi ST35010AS000
TRD MS205-18001

Sapphireho · 07-15-2021, 10:39 AM

Quote:

Originally Posted by gpvecchi

Exactly!
STi ST35010AS000
TRD MS205-18001

And neither one of them make enough of a difference in shifting to justify the price.

FrickingReallySlow · 07-15-2021, 10:50 AM

Quote:

Originally Posted by NoHaveMSG

Rebalance it.

guessing you checked the U-joint on both sides were solid? I haven't taken mine above 100 mph yet the road/hwy around me have too many potholes if that's where you start to see vibrations. Nothing below 95mph?

NoHaveMSG · 07-15-2021, 12:02 PM

Quote:

Originally Posted by FrickingReallySlow

guessing you checked the U-joint on both sides were solid? I haven't taken mine above 100 mph yet the road/hwy around me have too many potholes if that's where you start to see vibrations. Nothing below 95mph?

It has done it since new, but yes, both shops checked and inspected it when rebalancing.

I can move it around between 100-105mph but that is about it.

Sapphireho · 07-15-2021, 12:14 PM

Just dug up the receipt and verified I have the JDM TRD 8mm short shifter, and the DSS carbon shaft. No issues.

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