# BBK throttle body v. really leaky shaft seals
**URL:** https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286
**Category:** NYSpeed Automotive
**Created:** [July 29, 2009, 11:38am UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286 "2009-07-29T11:38:04Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@juicedz4](https://forums.speedlife.net/u/juicedz4)
#### Post date: [July 29, 2009, 11:38am UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/1 "2009-07-29T11:38:04Z")
So I have a new Mustang BBK TB that I got to replace the stock mustang TB on my cavy. Well the fn shaft seals leak like no tomorrow.
Is this a common “feature” of the BBK TBs? I searched around some, but didnt find any info or fix.
Thoughts?
Dan
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### Author:  [@38stang](https://forums.speedlife.net/u/38stang)
#### Post date: [July 29, 2009, 11:41am UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/2 "2009-07-29T11:41:59Z")
I have a BBK TB on my car, 70mm, no leaks. I was not even aware that there are seals on the shaft…
If you are concerned about a “whistling” noise thats not any seal, thats just what all BBKs do.
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### Author:  [@FiftyCheven](https://forums.speedlife.net/u/FiftyCheven)
#### Post date: [July 29, 2009, 11:50am UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/3 "2009-07-29T11:50:07Z")
throw it in the garbage and get yourself an accufab.
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### Author:  [@juicedz4](https://forums.speedlife.net/u/juicedz4)
#### Post date: [July 29, 2009, 11:54am UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/4 "2009-07-29T11:54:46Z")
Its def the seals, or bearings or w/e. They leak like no tomorrow at just 10psi, worthless.
For now Im going to put the stocker back on, I dont recall its seals leaking at all.
Ya, I should have spent the extra coin on the accufab. Maybee now is time?
Dan
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### Author:  [@FiftyCheven](https://forums.speedlife.net/u/FiftyCheven)
#### Post date: [July 29, 2009, 12:10pm UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/5 "2009-07-29T12:10:18Z")
Yes, its time. you wont regret it. i put 15 psi through my accufab when i had my mustang and had zero issues. everyone i know with one loves it. well worth the coin.
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### Author:  [@Spam16v](https://forums.speedlife.net/u/Spam16v)
#### Post date: [July 29, 2009, 1:26pm UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/6 "2009-07-29T13:26:17Z")
sounds like a rochester, lol.
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### Author:  [@newman](https://forums.speedlife.net/u/newman)
#### Post date: [July 29, 2009, 1:44pm UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/7 "2009-07-29T13:44:34Z")
I’d say that a lot of people who have these probably don’t even leak test them.
I assume it bolts together, can you replace the seals yourself?
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### Author:  [@juicedz4](https://forums.speedlife.net/u/juicedz4)
#### Post date: [July 29, 2009, 2:17pm UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/8 "2009-07-29T14:17:53Z")
ya, i might be able to. Ill pull the plate bolts out… see whats what . maybee
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### Author:  [@juicedz4](https://forums.speedlife.net/u/juicedz4)
#### Post date: [July 29, 2009, 4:30pm UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/9 "2009-07-29T16:30:25Z")
So I put the stock 92 TB, that I got used from a buddy forever ago, back on and it holds 15psi without issue.
Youd think the BBK would be able to do the same…
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### Author:  [@Haenszel](https://forums.speedlife.net/u/Haenszel)
#### Post date: [July 29, 2009, 7:37pm UTC](https://forums.speedlife.net/t/bbk-throttle-body-v-really-leaky-shaft-seals/71286/10 "2009-07-29T19:37:05Z")
my 75mm BBK leaks like crazy too. Esp pushing 35+psi.
STM has a product that fixes this issue for Evo TB’s… I’m sure something can be found to fix it for these BBK’s. other than that, its a pretty reasonably nice throttle body.