Rattle

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, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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Ragsdale
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Rattle

Post by Ragsdale »

I don't know if you guys can hear the rattle but here's a video.
Could it possibly just be the supercharger bearings?

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GoldenBullet
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Re: Rattle

Post by GoldenBullet »

sounds like its the coupler to me, take off the S/C belt and see if there is any play on the pulley.
-Matt
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2000Silverbullet
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Re: Rattle

Post by 2000Silverbullet »

What he said.
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Ragsdale
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Re: Rattle

Post by Ragsdale »

What's the gm part number?
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2000Silverbullet
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Re: Rattle

Post by 2000Silverbullet »

Let's take this one step at a time.
We need to confirm the problem.
I don't think GM sells the coupler......only the entire unit.
You need to order from one of our vendors listed in Links.
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2000 SSEi - SilverBullet - 78,000 kms, 4" "straight shot" custom headlight ram air inlet, TOGs, 1.9's, Lsd, 2.9-3.4"MPS 10-15 psi, Ported GenV, EGR eliminated, OR pushrods, oil volume kit, trani cooler & shift kit, Titanium retainers, 90 lb springs, 160 Stat, 42# injectors, Fuel pump voltage increase, Wideband O2, 3" to dual 2 1/2" Magnaflows, Snow Meth/water injection, after SC temp gauge, 255/50WR17, timing commander set 15-18*@WOT, 2 speed Fan over-ride, disabled DRL, Solid motor mount, Meziere Electric water pump, adjustable fuel pressure regulator, Drilled & slotted rotors/ceramics, GXP sway bars and STB, Upgraded and rebuilt transmission with ZZP 2500 rpm stall TC, Pioneer Bluetooth stereo with sub and 800 W amps, PB 13.5 quarter, (April 2014 car of the month)
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bonnevillain
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Re: Rattle

Post by bonnevillain »

if it's the coupler, it should go away when you rev it. no sound though, didn't watch the video.
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Ragsdale
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Re: Rattle

Post by Ragsdale »

It appears to go away when I rev it.

Also, in this video I think I see the pulley wobbling?
This video also illustrates the noise a bit better.
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OH2LS
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Re: Rattle

Post by OH2LS »

That sounds exactly like a supercharger snout coupler.
https://www.zzperformance.com/grand_pri ... &catid=106

Easy swap, but be prepared to smell the worst stuff you've ever smelled when you replace the s/c oil. :wink:
"3.8 Liters of twisted steel and sex appeal" -schmidty on NAIOA

I've got an '04 CompG. Got a Gen V and an intake...... so far
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2000Silverbullet
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Re: Rattle

Post by 2000Silverbullet »

It can be done with or without removing the entire supercharger.
Make sure you use the proper small tube 'red' sealant, sold with the coupler kit from Intense. You can also buy a big tube from GM but it's pricey.

Good time to take it off and clean it up. :wink:
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