Civic Si in GS

[sjd]

So I figured I would wade into this thread. I've read through it all but still don't have definitive answers.

I usually run in STR with an MX-5 but my new one is on order and I won't see it until mid to late summer. Since I'm also replacing my 2015 Si with a 2019 Si I think I'm just going to run GS this season. My 18 year old son has spent the last two seasons running our 2015 Si on "performance" all seasons and I think this year he's ready to make the jump to a better tire so it will be fun if we compete in the same car. He's working his way up to the MX-5. lol.

So for a 2019 Si, I'm thinking a rear sway bar and a 17 inch set of wheels and tires. I don't plan a full GS prep. I've seen a bunch of different tire and wheel offsets mentioned here. What's the accepted size? Can the Si handle a range of offsets? I know I need a 17x8. 255/40/17 seems to be a popular size. Does it fit without any issues or rubbing?

As for the rear sway bar I love the Karcepts bars and have them for my MX-5. Brian is awesome but he advised me that for a daily like my Si that his rear bar can be excessively noisy. So what is everyone running who is running the Karcepts? Progress? CTR?

Thanks!

Sponsored

 

[Vrruumm]

So I figured I would wade into this thread. I've read through it all but still don't have definitive answers.

I usually run in STR with an MX-5 but my new one is on order and I won't see it until mid to late summer. Since I'm also replacing my 2015 Si with a 2019 Si I think I'm just going to run GS this season. My 18 year old son has spent the last two seasons running our 2015 Si on "performance" all seasons and I think this year he's ready to make the jump to a better tire so it will be fun if we compete in the same car. He's working his way up to the MX-5. lol.

So for a 2019 Si, I'm thinking a rear sway bar and a 17 inch set of wheels and tires. I don't plan a full GS prep. I've seen a bunch of different tire and wheel offsets mentioned here. What's the accepted size? Can the Si handle a range of offsets? I know I need a 17x8. 255/40/17 seems to be a popular size. Does it fit without any issues or rubbing?

As for the rear sway bar I love the Karcepts bars and have them for my MX-5. Brian is awesome but he advised me that for a daily like my Si that his rear bar can be excessively noisy. So what is everyone running who is running the Karcepts? Progress? CTR?

Thanks!

255s on 17x8 wheels can easily fit even with +40 offset. As for rear sway bar I am getting the 25mm Eibach for the CTR, but stock isn't that bad.

 

[Forcino]

So I figured I would wade into this thread. I've read through it all but still don't have definitive answers.

I usually run in STR with an MX-5 but my new one is on order and I won't see it until mid to late summer. Since I'm also replacing my 2015 Si with a 2019 Si I think I'm just going to run GS this season. My 18 year old son has spent the last two seasons running our 2015 Si on "performance" all seasons and I think this year he's ready to make the jump to a better tire so it will be fun if we compete in the same car. He's working his way up to the MX-5. lol.

So for a 2019 Si, I'm thinking a rear sway bar and a 17 inch set of wheels and tires. I don't plan a full GS prep. I've seen a bunch of different tire and wheel offsets mentioned here. What's the accepted size? Can the Si handle a range of offsets? I know I need a 17x8. 255/40/17 seems to be a popular size. Does it fit without any issues or rubbing?

As for the rear sway bar I love the Karcepts bars and have them for my MX-5. Brian is awesome but he advised me that for a daily like my Si that his rear bar can be excessively noisy. So what is everyone running who is running the Karcepts? Progress? CTR?

Thanks!

RSB and RPF1s (45 offset to stay GS legal) with RE71rs (I run 245, but 255 will fit) is all the GS prep the Si needs to be competitive. I'm running this set this season with Hawk 5.0s. I have the CTR RSB and io get the car to rotate much better. But I would be curious to see what a larger bar did.

 

[das borgen]

I recommend a larger than CTR-srock bar.

I also hate the Hawk 5.0

 

[Forcino]

I recommend a larger than CTR-srock bar.

I also hate the Hawk 5.0

Do you think the OEM are better than the 5.0? I haven't run an event with them yet.

 

[Apex Carver]

I find Hawks in general to be pretty underwhelming pads. I much prefer something like Ferodo DS2500's or Raybestos ST43's.

 

[Forcino]

I find Hawks in general to be pretty underwhelming pads. I much prefer something like Ferodo DS2500's or Raybestos ST43's.

Do they make the DS2500s for the Si?

 

[Apex Carver]

Do they make the DS2500s for the Si?

good question... the Ferodo site really sucks I dont know for sure. I know they have them for the FK8 so i assumed they had them for the FC

 

[Forcino]

good question... the Ferodo site really sucks I dont know for sure. I know they have them for the FK8 so i assumed they had them for the FC

I tried to find them before I bought the 5.0s but couldn’t. Unfortunately there aren’t many options

 

[boscotheduck]

The Karcepts bar is pretty noisey. It works great though. Everyone’s tolerance for NVH is different but it didn’t bother me too much. That said...I’m planning on putting mine up for sale soon as I’m going all in on the Time Trials program.

 

[das borgen]

I wouldn't use the Karcepts bar on a street car. It drove me crazy just driving around in a paddock during an autocross. The eibach rear CTR bar though appeals to me

 

[das borgen]

You can hear how loud the bar is at the beginning of my video here

 

[5inn]

I wouldn't use the Karcepts bar on a street car. It drove me crazy just driving around in a paddock during an autocross. The eibach rear CTR bar though appeals to me

Is there an Eibach one that's around the same stiffness?

I currently have the CTR bar and definitely could use more rotation. I actually like the car better in the (mild) cold for autocross as there's less rear grip then. I should note that I never did get it aligned.

The only plus is that the CTR bar seems to be more expensive now than when I bought it.

 

[BarracksSi]

I wouldn't use the Karcepts bar on a street car. It drove me crazy just driving around in a paddock during an autocross. The eibach rear CTR bar though appeals to me

Heard your video in the next post. Man, that's loud. Have you figured out why it's so creaky? Are the bushings lubed?

 

[boscotheduck]

I will say mine wasn’t as loud as that video. I had more of a knocking/clicking over uneven pavement. Never really noticed the noise externally either.

Sponsored