1" 929 master would reduce the travel (moves more fluid per unit of travel than a 15/16) and bolt in place of the sport master with some relocation/fabrication of lines. Feel is a personal thing, so its best to plan on trying a few options to get it where you want.

I found a way to seal the 1" Wilwood master to the non-sealed brake booster. I was walking through Lowe's looking for things that might work and came across a toilet tank flapper. Sounds weird, I know, but it works. You'll have to cut off the chain (cut out entire ~1"circle) and remove the foam inside. Don't cut the other side as this will help create the seal. Put the cut side toward the master and the uncut side sticking out into the brake booster. This may sound confusing but I can post pictures if needed. Hope this helps! Link below if you want to go try it yourself.

https://www.homedepot.com/p/KOHLER-R...3064/202524246

Linky no work. Damn vigilink corupts it : kohler gp83064

There ya go. I heard you were able to seal the Wilwood master cylinder as well. Did you use a similar method/material?

Can you send pics of this seal set up please? I have Nb2 svt booster and wilwood master cylinder. I have modified the rod so it just pushes on master cylinder just when brake is applied but I have vacuum leak from booster and no assist.. with the method above, does this seal around the push rod? Do you need alot of Hondabond or similar gasket sealer?

I have the stock na 1.8 booster with wilwood master cylinder for now as it seals fine but I do not like the feel.

Any help appreciated. Thanks

We did not. We just recommend switching to a non-sealed, non-ABS booster if you have an ABS car and want to run the wilwood kit.

NB2 non-abs car with the 1" Wilwood with V8R adapter plate.

Sealed with RTV around the adapter plate to the master, then around the adapter plate to the booster, just around the hole (RTV not shown in this pic mind you).

https://cimg7.ibsrv.net/gimg/www.mia...768d39e0af.jpg

Thanks for that, I made up a gasket for either side today and used RTV . All working now. Thanks
https://cimg3.ibsrv.net/gimg/www.mia...17580b9da3.jpg
https://cimg1.ibsrv.net/gimg/www.mia...3697efae89.jpg

Any sort of mechanical practice like using a sealant like RTV on a component like a MC is a poor idea. There is a reason the engineers used a o-ring and not a gasket. The forces the booster has on the MC is trying to split the MC and booster apart. With enough time the flex on the components will cause the seal to fail. My 1" MC kit has bracket has noticeable flex even with a brace when I'm on the brakes. Be cautious, you don't want to just loose assist when you need it.