Leak between upper and lower intake mani? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

st280 · 07-06-2009, 02:25 PM

This is for an SR20det in S13... So a couple of weeks ago I had a major boost leak, and I finally had fixed it by replacing all the vacuum lines, and so the car ran pretty bad ass... A week later, a heater hose from UNDER the intake manifold cracked (Who puts hoses under there???).

So I set out to go and replace all the hoses, and put a new plenum intake mani on as well... I take apart the stock manifold, replace hoses, TRY to put plenum manifold on, and it doesn't match up with my innercooler piping, so I decide to just stick with the stock one.

When I start putting it all back together, I realized I forgot to put the gasket between the upper and lower part of the intake manifold

...

So I start up the car, and have a REALLY high idle at around 2k rpms, and wouldn't go any lower, and I had a huge boost leak. So I adjusted the IAC screw and it's down to 700.

Could the gasket be the cause of my problems?

japslapsilvia · 07-06-2009, 03:26 PM

let me get this straight. you put the 2 halfs of the manifold back togather WITHOUT the gasket? and you wonder why there is a leak???

st280 · 07-06-2009, 04:23 PM

Yes, very dumb of me, I know this. The gasket kit I got, the gasket doesn't fit between the 2 halves. And I didn't rememer there being one on... I'll go get one, and put it on.. And report back.

st280 · 07-06-2009, 05:46 PM

So put the gasket in... Still the same though, could it be a leak from the injector bunges? It seems they are a little louder than normal? Or could that even cause a boost leak?

theronin · 07-06-2009, 07:08 PM

did u torque the mani on correctly? is the gasket on the right way?

st280 · 07-06-2009, 07:10 PM

yes, and yes

st280 · 07-07-2009, 07:48 PM

Well, seeing as I can't figure this stupid thing out, anyone know of any shops around my area that may be of service?

ILoveJDM · 07-07-2009, 07:52 PM

you take the iacv off to puy on the new mani-then forget the gasket there too?

st280 · 07-07-2009, 10:13 PM

no, didn't touch the iacv, the new mani had one on it

*DALAZ_68* · 07-08-2009, 10:53 AM

so you fucked up on a gasket job and tried adjusting ur fuel to compensate...?

really?......Really?...

wow...let the flaming begin...PLEASE!

roboticnissan · 07-08-2009, 11:23 AM

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^
ive now decided that ppl with insane amounts of posts are the most useless ppl on zilvia
unless your a mod and you have no choice

07-06-2009, 02:25 PM	#1
st280 Zilvia Junkie Join Date: Feb 2008 Location: San Diego, CA Posts: 307 Trader Rating: (12) Feedback Score: 12 reviews	Leak between upper and lower intake mani? This is for an SR20det in S13... So a couple of weeks ago I had a major boost leak, and I finally had fixed it by replacing all the vacuum lines, and so the car ran pretty bad ass... A week later, a heater hose from UNDER the intake manifold cracked (Who puts hoses under there???). So I set out to go and replace all the hoses, and put a new plenum intake mani on as well... I take apart the stock manifold, replace hoses, TRY to put plenum manifold on, and it doesn't match up with my innercooler piping, so I decide to just stick with the stock one. When I start putting it all back together, I realized I forgot to put the gasket between the upper and lower part of the intake manifold ... So I start up the car, and have a REALLY high idle at around 2k rpms, and wouldn't go any lower, and I had a huge boost leak. So I adjusted the IAC screw and it's down to 700. Could the gasket be the cause of my problems?

07-08-2009, 10:53 AM	#10
DALAZ_68 not giving a fuck Join Date: Apr 2007 Location: Los angeles Age: 38 Posts: 15,077 Trader Rating: (104) Feedback Score: 104 reviews	so you fucked up on a gasket job and tried adjusting ur fuel to compensate...? really?......Really?... wow...let the flaming begin...PLEASE! __________________ LOL 240... whats better than 1? 5 1's ...lol PSN & XBL GT : Wh0pp3r68 CLUB LEXUS : Wh0pp3r

07-08-2009, 11:23 AM	#11
roboticnissan Nissanaholic! Join Date: Mar 2007 Location: SOCAL/NORCAL Age: 36 Posts: 1,868 Trader Rating: (12) Feedback Score: 12 reviews	^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^ ive now decided that ppl with insane amounts of posts are the most useless ppl on zilvia unless your a mod and you have no choice __________________

07-06-2009, 04:23 PM	#3
st280 Zilvia Junkie Join Date: Feb 2008 Location: San Diego, CA Posts: 307 Trader Rating: (12) Feedback Score: 12 reviews	Yes, very dumb of me, I know this. The gasket kit I got, the gasket doesn't fit between the 2 halves. And I didn't rememer there being one on... I'll go get one, and put it on.. And report back.

07-06-2009, 05:46 PM	#4
st280 Zilvia Junkie Join Date: Feb 2008 Location: San Diego, CA Posts: 307 Trader Rating: (12) Feedback Score: 12 reviews	So put the gasket in... Still the same though, could it be a leak from the injector bunges? It seems they are a little louder than normal? Or could that even cause a boost leak?

07-06-2009, 07:10 PM	#6
st280 Zilvia Junkie Join Date: Feb 2008 Location: San Diego, CA Posts: 307 Trader Rating: (12) Feedback Score: 12 reviews	yes, and yes

07-07-2009, 07:48 PM	#7
st280 Zilvia Junkie Join Date: Feb 2008 Location: San Diego, CA Posts: 307 Trader Rating: (12) Feedback Score: 12 reviews	Well, seeing as I can't figure this stupid thing out, anyone know of any shops around my area that may be of service?

07-07-2009, 07:52 PM	#8
ILoveJDM Nissanaholic! Join Date: Jul 2006 Location: SK Canada! Posts: 1,947 Trader Rating: (27) Feedback Score: 27 reviews	you take the iacv off to puy on the new mani-then forget the gasket there too?

07-07-2009, 10:13 PM	#9
st280 Zilvia Junkie Join Date: Feb 2008 Location: San Diego, CA Posts: 307 Trader Rating: (12) Feedback Score: 12 reviews	no, didn't touch the iacv, the new mani had one on it