Failled Upper? Sound off: - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

View Poll Results: was your failed upper a...
rochester 8 18.60%
delphi 10 23.26%
i didn't pay that much attention, i was a little more worried about other things... 25 58.14%
Voters: 43. You may not vote on this poll

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Old 12-23-2004, 11:45 AM   #1
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Default Failled Upper? Sound off:

Okay, I was wondering if those of you with failed uppers can quickly let me know if it was a rochester or delphi unit, and the year of your car...

matt
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Old 12-23-2004, 11:52 AM   #2
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Mine just failed last month (assuming for the second time since it was marked 2001). This time I got the newly redesigned (not series 3, tho) Upper and Lower intakes. Cost me a penny or two extra for the work.
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Old 12-23-2004, 12:06 PM   #3
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My upper was a Delphi, but it hadn't failed. I bought a new intake (thinking that my old one was melted as I was doing the project as preventative maintenance). When I unbolted it, to my surprise, it looked like new. Regardless, I still bolted on the new on that I bought. It, too, is a Delphi.

The lower gaskets on the other hand....
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Old 12-23-2004, 12:43 PM   #4
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Default delphi

My original was a rochester and had signs of burning but no failure.
Installed a Delphi.
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Old 12-23-2004, 06:46 PM   #5
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i also have a rochester that hasn't failed. my lowers were shot though.
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Old 12-23-2004, 09:52 PM   #6
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Quote:
Originally Posted by vital49
My upper was a Delphi, but it hadn't failed. I bought a new intake (thinking that my old one was melted as I was doing the project as preventative maintenance). When I unbolted it, to my surprise, it looked like new. Regardless, I still bolted on the new on that I bought. It, too, is a Delphi.

The lower gaskets on the other hand....
Ditto. Turned out all I needed was a TB gasket.
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Old 12-24-2004, 11:42 AM   #7
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Quote:
Originally Posted by opensourceguy
Buring your intakes? What the H*** are you guys running? Like 3,000* engine temps? Sounds like you guys need a better cooling system.

Oh wait, your intakes are made of plastic.. hahaha! Losers.

/A$$****

-justin
uh, right.

anyway, on topic...
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Old 12-24-2004, 12:55 PM   #8
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Quote:
Originally Posted by opensourceguy
Buring your intakes? What the H*** are you guys running? Like 3,000* engine temps? Sounds like you guys need a better cooling system.

Oh wait, your intakes are made of plastic.. hahaha! Losers.

/A$$****

-justin
The LS7 has a composite manifold as well. It'* lighter, easier to build complex tunels with, and cheaper. The only reason they fail in L36'* is because of the EGR stove-pipe touching them. An L27 composite intake flows better then the original 3800 one as well.
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Old 12-24-2004, 04:31 PM   #9
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Quote:
Originally Posted by BonneMeMN
Quote:
Originally Posted by opensourceguy
Buring your intakes? What the H*** are you guys running? Like 3,000* engine temps? Sounds like you guys need a better cooling system.

Oh wait, your intakes are made of plastic.. hahaha! Losers.

/A$$****

-justin
The LS7 has a composite manifold as well. It'* lighter, easier to build complex tunels with, and cheaper. The only reason they fail in L36'* is because of the EGR stove-pipe touching them. An L27 composite intake flows better then the original 3800 one as well.
bingo.

composite intakes are great (they're used on the ls1, 2, 4, and 6, btw), and they're usually nothing but benefits. but someone goofed up a little with their thermodynamics, and we're paying the price for it. so it goes.
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Old 12-24-2004, 04:34 PM   #10
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Quote:
Originally Posted by opensourceguy
Buring your intakes? What the H*** are you guys running? Like 3,000* engine temps? Sounds like you guys need a better cooling system.

Oh wait, your intakes are made of plastic.. hahaha! Losers.

/A$$****

-justin
get with the program since your a northstar
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