Why is my GM 3800 supercharger making a rattling noise?

Why is my GM 3800 supercharger making a rattling noise?

The setup: A GM Series II 3800 V6 with a third generation Eaton M90 supercharger. After 120,000 miles and 10 years, worn bearings and a coupler inside the supercharger cause a grinding/rattling type noise at idle.

How does a centrifugal supercharger make the whine?

However, centrifugal superchargers also provide that keening sound at a lower price point. Decide which is the best for you! Make sure that your throttle is opened — it’ll make the noise sound much louder, which will definitely help produce that supercharger whine.

Why does a supercharger make so much noise?

Here are some factors that may go into making a supercharger sound the way it does: Because the whine comes from the gears as they mesh, changing up the shape of the gears will change the whine. If the teeth have a very shallow angle, the whine will be louder. Others postulate that the noise comes from the rotors chopping the air.

Can you add a supercharger whine to a car?

Good news: If your car doesn’t come with a supercharger, each of the three main types are easily added to any car. However, if you want to optimize your chances of getting that sweet supercharger whine, there are some distinct steps you can take. Here are some things to consider if you wish to improve your supercharger whine.

The setup: A GM Series II 3800 V6 with a third generation Eaton M90 supercharger. After 120,000 miles and 10 years, worn bearings and a coupler inside the supercharger cause a grinding/rattling type noise at idle.

What happens when you run a supercharger without oil?

If the issue continues after engine rev then the coupler may be damaged. leak. when the unit is run without oil. increased movement of the air through the unit. be checked by hand to determine if it is indeed the source of the noise. balanced. The vibration is the engine.

What are the signs of a supercharger failure?

Failure early warning signs and specific way to be repaired. Vibration. the housing. then there is an idle issue. If the issue continues after engine rev then the coupler may be damaged. leak. when the unit is run without oil.

What’s the best way to fix a supercharger?

The fix: Remove the snout on the supercharger and replace bearings, coupler, snout seal, gasket, and supercharger oil. The crew: Two ASE certified mechanics (Tom & Ben) and one idiot (me).

When did Buick change the engine to 3800?

1988 — Buick now dubbed the engine the 3800. The block casting was revised and a balance shaft added to dampen vibrations.

What kind of engine does a GM 3800 have?

Applications include the 2004-’08 Pontiac Grand Prix, 2005-’08 Buick LaCrosse and 2006-’08 Buick Lucerne. An L32 Supercharged Series III 3800 also is introduced, rated at 260 hp in the Pontiac Grand Prix GT and GTP.

Is the Buick 350 a 3.8L engine?

The 3.8L engine shared the same 3.8” bore size as the Buick 350 V8. It also had an “odd-fire” crankshaft, which produced some idle shake and vibration. Over the years various improvements were made to upgrade engine performance.

Can a GTP supercharger be added to a 3800?

One of the most common questions in the 3800 market is “Can I bolt a GTP supercharger onto my GT (L36) engine. The short answer is no. The only things the non supercharged and supercharged 3800’s have in common are the block and crank. Everything else is different.

Applications include the 2004-’08 Pontiac Grand Prix, 2005-’08 Buick LaCrosse and 2006-’08 Buick Lucerne. An L32 Supercharged Series III 3800 also is introduced, rated at 260 hp in the Pontiac Grand Prix GT and GTP.

1988 — Buick now dubbed the engine the 3800. The block casting was revised and a balance shaft added to dampen vibrations.

The 3.8L engine shared the same 3.8” bore size as the Buick 350 V8. It also had an “odd-fire” crankshaft, which produced some idle shake and vibration. Over the years various improvements were made to upgrade engine performance.