# Removing upper intake plenum - SR20DET **URL:** \ **Category:** SON240sx Automotive\ **Created:** [June 18, 2006, 4:05pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077 "2006-06-18T16:05:01Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\ **Post date:** [June 18, 2006, 4:05pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/1 "2006-06-18T16:05:01Z")
So I removed all the 12mm (and a few 10mm) bolts that I could possibly see holding the upper plenum. But as I tug on the plenum, the bottom part comes loose a few mm so nothing is holding on the bottom side. But the top side doesn’t even move a whole lot. It seems like something is holding it there but I can’t tell what. Any ideas? Does any of the IACV pieces holding the upper plenum? I thought the IACV only goes on the bottom plenum. ---
**Author:** ![AppleSauce](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/applesauce/32/5521_2.png) [@AppleSauce](https://forums.speedlife.net/u/AppleSauce)\ **Post date:** [June 18, 2006, 4:32pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/2 "2006-06-18T16:32:18Z")
Just like how you removed all the bolts from the bellhousing when you pulled your tranny on the KA ?? ---
**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\ **Post date:** [June 18, 2006, 5:57pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/3 "2006-06-18T17:57:50Z")
> [@AppleSauce](#): > > Just like how you removed all the bolts from the bellhousing when you pulled your tranny on the KA ?? Your sarcasm is unappreciated. :squintnono: ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [June 18, 2006, 6:06pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/4 "2006-06-18T18:06:14Z")
but its so funny because its directed towards you its like a taste of your own medicine did you take all the brackets off the intake mani? i believe some are attached to the upper iirc (i have an S14 so its totally different - trying to remembe rthe S13 days) ---
**Author:** ![robbbby](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@robbbby](https://forums.speedlife.net/u/robbbby)\ **Post date:** [June 18, 2006, 6:43pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/5 "2006-06-18T18:43:09Z")
> [@Gonad](#): > > But as I tug on the plenum, the bottom part comes loose a few mm so > nothing is holding on the bottom side. The plenum is the bottom part. You’re trying to remove the runners? You’re going to have to undo all the brackets that hold the plenum (bottom part) in order to remove the runners since the runners have bolts running through them vertically from the plenum and horizontally from the cylinder head. I THINK there are 3 brackets bolted from the block to the plenum. ---
**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\ **Post date:** [June 18, 2006, 7:03pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/6 "2006-06-18T19:03:03Z")
I removed the 2 bolts per port on the top (which holds the runners to the head), adn then 2 bolts per port on the bottom (which holds the runner to the lower plenum). A few of them were nuts instead of bolts. And then a few bolts here and there that I could see in that area. So yes, the runners are free from the lower plenum in that I can already separate them, but I can’t seem to break them loose from the head. ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [June 18, 2006, 8:15pm UTC](https://forums.speedlife.net/t/removing-upper-intake-plenum-sr20det/97077/7 "2006-06-18T20:15:09Z")
fsm