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Help: BBI Clutch Slave Conversion Kit
Hi, hoping someone can help me with the BBI Slave Kit. I just received it, and in addition to the unit itself, I also received what I think is the Clutch Pedal Spring. I've researched the forum, and found out that many people install a GT3 Pedal Spring so the pedal is not so stiff. GT3 Pedal Spring 997-423-081-06. The pedal spring that is included with the kit has the part numbers 997.423.579.00. I've tried searching this part number but nothing turns up? I did find that ECS Tuning sells the GT3 Clutch Pedal Spring but the picture of the GT3 helper spring on their site has the same part number 997.423.579.00 of what I was sent. But on their site, they list the part number as 997-423-081-06. https://www.ecstuning.com/b-genuine-...u/99742308106/ I'm assuming that the pedal spring included with the BBI kit is actually the same GT3 Pedal Spring, and that Porsche has just put their part number on the OEM suppliers part which has their own number? Anyways, hoping someone can chime in. Thanks in advance! https://cimg9.ibsrv.net/gimg/www.6sp...ce2e0d562.jpeg Is this the GT3 Pedal Spring? 997.423.081.06 https://cimg5.ibsrv.net/gimg/www.6sp...8589b79c0.jpeg 997.423.579.00 is the same as 997.423.081.06? |
Hi got your PM. I am no expert in this matter but the spring used with my BBI kit (installed by BBI itself) is part number 997.423.081.06. https://www.6speedonline.com/forums/...bbi-slave.html
I never saw the spring personally, but IIRC this was what appeared on the actual invoice. If no one could confirm either way for you, maybe call BBI and ask? |
Bbi
Also interested in the answer.
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Hi Cannga, thanks for the response. It was your posts/experience that led me to look for 997.423.081.06 But in searching for it, on the ECS site, they list this exact part number but the picture of the part itself shows the number 997.423.579.00 on it. (The exact same part they sent in the kit) I imagine BBI would not send a stock 997 Clutch Pedal Spring. I just don't want to buy the exact same part they already sent me. I will call them up and ask. Overall, I imagine it's a worthwhile upgrade :) |
GT3 spring
Originally Posted by NWturbo
(Post 4770567)
Hi, hoping someone can help me with the BBI Slave Kit. I just received it, and in addition to the unit itself, I also received what
I think is the Clutch Helper Spring. I've researched the forum, and found out that many people install a GT3 Helper Spring so the pedal is not so stiff. GT3 Helper Spring 997-423-081-06. The helper spring that is included with the kit has the part numbers 997.423.579.00. I've tried searching this part number but nothing turns up? I did find that ECS Tuning sells the GT3 Helper Spring but the picture of the GT3 helper spring on their site has the same part number 997.423.579.00 of what I was sent. But on their site, they list the part number as 997-423-081-06. https://www.ecstuning.com/b-genuine-...u/99742308106/ I'm assuming that the helper spring included with the BBI kit is actually the same GT3 Helper Spring, and that Porsche has just put their part number on the OEM suppliers part which has their own number? Anyways, hoping someone can chime in. Thanks in advance! https://cimg9.ibsrv.net/gimg/www.6sp...ce2e0d562.jpeg Is this the GT3 Helper Spring? 997.423.081.06 https://cimg5.ibsrv.net/gimg/www.6sp...8589b79c0.jpeg 997.423.579.00 is the same as 997.423.081.06? |
When you ordered your BBI kit, it did not come with a new Clutch Pedal Spring 997.423.579.00?
So I guess I lucked out and they gave me one for free??? |
Originally Posted by NWturbo
(Post 4770591)
When you ordered your BBI kit, it did not come with a new Helper Spring 997.423.570.00?
So I guess I lucked out and they gave me one for free??? Remember also from now on you need to use DOT 4 fluid. I actually put a label on the cap. If you use the stock fluid, it would melt rubber component in the BBI unit. From BBI: OEM PENTOSIN FLUID MUST BE FULLY FLUSHED OUT AND REPLACED WITH DOT4 BRAKE FLUID. SEALS WILL FAIL IF THIS PROCEDURE IS NOT COMPLETED BTW please allow a little nit picking here (for others reading this): "Helper spring" usually refers to the smaller spring of a coilover suspension system such as in my beloved Bilstein coilovers (to prevent noise etc. and has no function otherwise, hence "helper."). This spring we're talking about is simply the clutch pedal spring of every 911. |
Originally Posted by NWturbo
(Post 4770591)
When you ordered your BBI kit, it did not come with a new Helper Spring 997.423.570.00?
So I guess I lucked out and they gave me one for free??? |
Thanks guys for all the replies and info. I guess I got really confused when BBI sent me a new Pedal Spring along with their conversion piece.
I revised my posts about the "Helper" spring to "Clutch Pedal" where I could :) Thanks Cannga and Bushrat! |
You may want to try the unit without the helper spring. I have the BBI kit and love the stiff clutch. It didn’t take more than a couple drives to get used to it. I have an extra spring I picked up, but decided against using it since it’s not too bad. |
Originally Posted by jakethunder
(Post 4770636)
You may want to try the unit without the helper spring. I have the BBI kit and love the stiff clutch. It didn’t take more than a couple drives to get used to it. I have an extra spring I picked up, but decided against using it since it’s not too bad. |
No harm in trying without the stiffer clutch spring, but trust me, you will end up installing it. You will still have a very firm and linear clutch pedal, but with the GT3 spring your leg won't quiver when you have the clutch pedal pushed to the floor :).
Also, take a look at your clutch engagement point post-install....you might benefit from installing a clutch stop. In my case the GT3 spring and clutch stop made life much better. |
Originally Posted by TypeRx
(Post 4770645)
No harm in trying without the stiffer clutch spring, but trust me, you will end up installing it. You will still have a very firm and linear clutch pedal, but with the GT3 spring your leg won't quiver when you have the clutch pedal pushed to the floor :).
Also, take a look at your clutch engagement point post-install....you might benefit from installing a clutch stop. In my case the GT3 spring and clutch stop made life much better. |
Originally Posted by bushrat
(Post 4770658)
I take it you mean a stop to limit the clutch pedal travel ?
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Originally Posted by TypeRx
(Post 4770762)
Yup, but I should also note I have a "Sachs 2.5" clutch/pp kit, so that changes engagement point and pedal travel. With this setup, I can further reduce clutch pedal travel by like 50%. Combined with the stiff clutch slave conversion (I have GT2, not BBi), the shorter travel, GT3 clutch spring, and better modulation are a winning combo as long as you are okay with increased pedal pressure.
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