Obioban's 2005 IR/IR Coupe

[heinzboehmer]

Is your CSB replaced? I'd do that first, if not.

Yup, all bushings on the car have been replaced under my ownership.

Might be worth going over everything before diving into a diff replacement though.

[Obioban]

Interesting. 125k on mine, so I think it could use a refresh. Now I want to drive a higher mileage car with a refreshed diff to see what that feels like.



That's good to hear.

And maybe "extra notchy" is not the best way to describe it. What I'm talking about is the feeling that happens when you try to switch gears fast and don't let the drivetrain "settle". The shifter becomes harder to push into the gate and when it finally does go in, you can feel the drivetrain clunking through the shifter. Doesn't happen on every fast gear change, but it happens often enough to be annoying.

I think you both have convinced me to start planning a diff refresh. Need to spend some time deciding what I want on the car first though.

Is your CSB replaced? I'd do that first, if not.

[heinzboehmer]

When I swapped in my rebuilt 3.91 diff from diffs online last winter I can say almost all my clunk vanished. Shifts are much smoother now (however I'm in SMG), will be interesting to see how long that lasts. I had 100k on my original diff. I know this is Obi's thread but thought interesting enough to share.

Interesting. 125k on mine, so I think it could use a refresh. Now I want to drive a higher mileage car with a refreshed diff to see what that feels like.

Hmm.

I suppose I know what you mean-- you can feel the M clunk in the shifter. I do not, anymore.

I don't think I've ever noticed it correlating with extra notchy shifts, so I can't say I feel like that is reduced.

That's good to hear.

And maybe "extra notchy" is not the best way to describe it. What I'm talking about is the feeling that happens when you try to switch gears fast and don't let the drivetrain "settle". The shifter becomes harder to push into the gate and when it finally does go in, you can feel the drivetrain clunking through the shifter. Doesn't happen on every fast gear change, but it happens often enough to be annoying.

I think you both have convinced me to start planning a diff refresh. Need to spend some time deciding what I want on the car first though.

[Obioban]

Saw you say on another thread that the wavetrac diff is quieter than stock since there's no m clunk. Have you noticed any differences in shift feel with the new diff?

I ask cause I was driving around with the back seats down the other day and I could hear the diff clunking away pretty clearly. The clunks correlated with that extra notchy feeling that sometimes happens when switching gears (almost as if the whole drivetrain is loaded up and needs to unbind before the gear can be selected).

I'm starting to think that most of the gripes I have with how my transmission feels are due to my diff. Actually, I remember there was a noticeable improvement in shift feel when I swapped out the diff fluid right after buying my car.

Hmm.

I suppose I know what you mean-- you can feel the M clunk in the shifter. I do not, anymore.

I don't think I've ever noticed it correlating with extra notchy shifts, so I can't say I feel like that is reduced.

[oceansize]

Saw you say on another thread that the wavetrac diff is quieter than stock since there's no m clunk. Have you noticed any differences in shift feel with the new diff?

I ask cause I was driving around with the back seats down the other day and I could hear the diff clunking away pretty clearly. The clunks correlated with that extra notchy feeling that sometimes happens when switching gears (almost as if the whole drivetrain is loaded up and needs to unbind before the gear can be selected).

I'm starting to think that most of the gripes I have with how my transmission feels are due to my diff. Actually, I remember there was a noticeable improvement in shift feel when I swapped out the diff fluid right after buying my car.

When I swapped in my rebuilt 3.91 diff from diffs online last winter I can say almost all my clunk vanished. Shifts are much smoother now (however I'm in SMG), will be interesting to see how long that lasts. I had 100k on my original diff. I know this is Obi's thread but thought interesting enough to share.

[heinzboehmer]

Street review of wavetrac: indistinguishable from stock.

Saw you say on another thread that the wavetrac diff is quieter than stock since there's no m clunk. Have you noticed any differences in shift feel with the new diff?

I ask cause I was driving around with the back seats down the other day and I could hear the diff clunking away pretty clearly. The clunks correlated with that extra notchy feeling that sometimes happens when switching gears (almost as if the whole drivetrain is loaded up and needs to unbind before the gear can be selected).

I'm starting to think that most of the gripes I have with how my transmission feels are due to my diff. Actually, I remember there was a noticeable improvement in shift feel when I swapped out the diff fluid right after buying my car.

[Tonggi]

Larger screen Avin installed:

What avin model is this? I cant find it on their site

Edit, found it

https://avinusa.com/8-8-multimedia-n...x69088e46.html

man that is sexy looks a lot better than Avin Avant 4 that has a lot of buttons i dont really need

[Malloy]

Yes. My brother has the 0% in his car, and it is perfection.

Thanks again. I talked to Ronald the other day and I'm sold. He pushed me twd a 20% reduction so I need to decide. Either way, I can't wait to get his parts :-)

[D-O]

Would that be the Ultra kit or the Autocross kit?

Jesse

[Obioban]

Good deal. thanks. I need to get rid of my UUC (too notchy) and the 0% Auto Solutions sounds like a good option...

Yes. My brother has the 0% in his car, and it is perfection.

[Malloy]

I currently have a 20% auto solutions kit. Next time I have the trans out, I will swap it for a 0% auto solutions kit.

Stock knob (and will be staying that way).

Good deal. thanks. I need to get rid of my UUC (too notchy) and the 0% Auto Solutions sounds like a good option...

[Obioban]

Hey Ian, what shifter do you run?

I currently have a 20% auto solutions kit. Next time I have the trans out, I will swap it for a 0% auto solutions kit.

Stock knob (and will be staying that way).

[Malloy]

Hey Ian, what shifter do you run?

[Obioban]

Hey Obiodan, those ohlins are the regular R&T? Well the AW does 'look' like it's rolling over more than your car.

They're flat ride converted, stock valving. Stock R&T is 400/628. Those are
375 350
700 628

... though with a GC race front sway set to full stiff, which is doing way more for roll stiffness than the springs are :P
(sway bar is 69% of roll stiffness for that setup)

[enjoy_m3]

Hey Obiodan, those ohlins are the regular R&T? Well the AW does 'look' like it's rolling over more than your car.