# How much vacuum in an sr20det?

**URL:** <https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721>\
**Category:** Canada Nissan Automotive\
**Created:** [August 7, 2005, 6:11pm UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721 "2005-08-07T18:11:11Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![stillslow](https://avatars.discourse-cdn.com/v4/letter/s/87869e/32.png) [@stillslow](https://forums.speedlife.net/u/stillslow)\
**Post date:** [August 7, 2005, 6:11pm UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/1 "2005-08-07T18:11:11Z")

</div>

How much vacuum should I be running with my sr20det motor??right now I am running at 14 I think it seems low?

---

<div class="post-metadata">

**Author:** ![boost\_infested](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boost_infested/32/5496_2.png) [@boost\_infested](https://forums.speedlife.net/u/boost_infested)\
**Post date:** [August 7, 2005, 7:19pm UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/2 "2005-08-07T19:19:46Z")

</div>

idle - between 14\>16

---

<div class="post-metadata">

**Author:** ![1mns13](https://avatars.discourse-cdn.com/v4/letter/1/8491ac/32.png) [@1mns13](https://forums.speedlife.net/u/1mns13)\
**Post date:** [August 8, 2005, 6:49am UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/3 "2005-08-08T06:49:27Z")

</div>

I usually see 18"

---

<div class="post-metadata">

**Author:** ![SRBURG13](https://avatars.discourse-cdn.com/v4/letter/s/9fc29f/32.png) [@SRBURG13](https://forums.speedlife.net/u/SRBURG13)\
**Post date:** [August 8, 2005, 9:14am UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/4 "2005-08-08T09:14:49Z")

</div>

I run 10 at idle. But thats because of my cams. So 14 shouldn’t be too low for yourself. I remember seeing around the 18 mark as well before the cams.

---

<div class="post-metadata">

**Author:** ![RS13](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@RS13](https://forums.speedlife.net/u/RS13)\
**Post date:** [August 8, 2005, 10:01am UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/5 "2005-08-08T10:01:36Z")

</div>

Units of measure would be a great help to this thread.

I am guessing you all are talking in mm Hg ???/

---

<div class="post-metadata">

**Author:** ![SRBURG13](https://avatars.discourse-cdn.com/v4/letter/s/9fc29f/32.png) [@SRBURG13](https://forums.speedlife.net/u/SRBURG13)\
**Post date:** [August 8, 2005, 11:47am UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/6 "2005-08-08T11:47:06Z")

</div>

Whatever is on the autometer gauge 😃 😛 Isn’t it inhg on there?

---

<div class="post-metadata">

**Author:** ![1mns13](https://avatars.discourse-cdn.com/v4/letter/1/8491ac/32.png) [@1mns13](https://forums.speedlife.net/u/1mns13)\
**Post date:** [August 8, 2005, 2:32pm UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/7 "2005-08-08T14:32:11Z")

</div>

> [@RS13](#):
>
> Units of measure would be a great help to this thread.
> 
> I am guessing you all are talking in mm Hg ???/

Nope, inches of vacuum. No metric here.

---

<div class="post-metadata">

**Author:** ![stillslow](https://avatars.discourse-cdn.com/v4/letter/s/87869e/32.png) [@stillslow](https://forums.speedlife.net/u/stillslow)\
**Post date:** [August 8, 2005, 3:42pm UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/8 "2005-08-08T15:42:26Z")

</div>

Well right now my idle isnt real stable but when it does calm down its between 14 and 16 so i am not to far off if not fine.Would my BOV being vented cause me to loose some vacuum at idel and possibly make my idle bounce a bit?

---

<div class="post-metadata">

**Author:** ![SRBURG13](https://avatars.discourse-cdn.com/v4/letter/s/9fc29f/32.png) [@SRBURG13](https://forums.speedlife.net/u/SRBURG13)\
**Post date:** [August 8, 2005, 7:41pm UTC](https://forums.speedlife.net/t/how-much-vacuum-in-an-sr20det/139721/9 "2005-08-08T19:41:51Z")

</div>

If your BOV was leaking or fluttering, you would be having a vacumm leak and therefore a shitty idle and vacumm reading. Make sure it is tight enough if it is adjustable.