Innovate (Sprintex) Supercharger Owners Topic

[TemeCal]

I've uploaded a video of my squeaking. Surprisingly, the squeaking in the video wasn't as loud as it normally is. Here's the video:

[ame="https://www.youtube.com/watch?v=Ycw0sPvUQ44&list=UU8z0Y2CfY9sk5tiyOLSGWoQ"]Innovate squeaking - YouTube[/ame]

I plan to use a stethoscope today, to try and isolate where the squeaking is coming from. I should mention, the squeaking typically only occurs after the car has been sitting overnight. After the initial squeaking disappears, it's quiet throughout the remainder of the day.

[TemeCal]

I took a stethoscope to every pulley, the blower, alternator, etc... Couldn't find the source of the squeak. I'm beginning to think it's just the belt. I'm using the blue belt, so I'm tempted to go back to the original black belt that came with the kit.

[Fizz]

I agree, I think we can rule out pulley issues. Mine does that on cold starts idle revs.....then goes away when cold idle drops. But once you start driving it gets noticeably louder again with tempo that increases with revs. Then goes away for good when engine is fully warmed up.

I've fitted a 76mm idler pulley in place of the 70mm pulley that was included with the supercharger kit. This (together with the "original" 75mm charger pulley and belt) increased the belt tension a fair bit, but with limited success.

The squeak still happens, but the loudness and duration till it goes away is about half now.

I'm going to try a 69mm charger pulley with shorter belt, and original idler pulleys.

[Ultramaroon]

Originally Posted by TemeCal

I've uploaded a video of my squeaking. Surprisingly, the squeaking in the video wasn't as loud as it normally is. Here's the video:

I hear 2 distinctly different squeaks. The lower frequency seems to correspond with the belt label passing over one of the flat idle pulleys. The higher frequency squeak is disturbing. That sounds like dry metal-to-metal contact.

Are you absolutely certain all of the idler pulley bearings, including the tensioner pulley, are in good health?

What, if anything, happens to the sound when the A/C compressor is engaged?

[Jonesy86]

Originally Posted by Fizz

Not really sure how to describe it. Could be rubbery squeak. Kinda sounds like an old cheapo bicycle squeaking....lol.

@Ultramaroon I can show you this noise in person. Mine likes to make it during every couple of cold starts. It made the noise most of the way home tonight. Mostly under deceleration/steady speeds.

Also, that bigger sprintex blower sounds amazing. Maybe if I hit the lotto...And they don't all explode.

[brianhj]

Would 9.0:1 be a good CR for the 335?

[sam69]

Originally Posted by brianhj

Would 9.0:1 be a good CR for the 335?

From all my research 10:1 would be better and some say 10.5 so

I've ordered 10: 1's

[TemeCal]

Originally Posted by Ultramaroon

I hear 2 distinctly different squeaks. The lower frequency seems to correspond with the belt label passing over one of the flat idle pulleys. The higher frequency squeak is disturbing. That sounds like dry metal-to-metal contact.

Are you absolutely certain all of the idler pulley bearings, including the tensioner pulley, are in good health?

What, if anything, happens to the sound when the A/C compressor is engaged?

Idler pulley was the first thing I replaced. It obviously didn't do anything for me. I'll have to pull the belt to check the condition of the other pulleys.

I don't recall the squeaking changing when the AC compressor kicks in, but I'll confirm.

My squeaking goes away within a minute of driving.

[BobbyBlue86]

Originally Posted by sam69

From all my research 10:1 would be better and some say 10.5 so

I've ordered 10: 1's

It would be pretty dumb to lower the cr... you might as well run the 210 with stock internals.

If you are going to do anything regarding the 335, get better Con Rods and forged pistons. Or better fuel...

[brianhj]

Originally Posted by BobbyBlue86

It would be pretty dumb to lower the cr... you might as well run the 210 with stock internals.

If you are going to do anything regarding the 335, get better Con Rods and forged pistons. Or better fuel...

Boost levels aren't high enough with the 335 to benefit from a lower CR?

[Fizz]

Time will tell....but tonight I finally got rid of the squeaks! Went for a 15min drive and so far so good.

I installed a new shorter belt (gates K061010) with the 69mm charger pulley. All other pulleys stock. The tension arm is now only about an inch away from bottom out. Hopefully that doesn't affect it's lifespan too much?

[BobbyBlue86]

Originally Posted by brianhj

Boost levels aren't high enough with the 335 to benefit from a lower CR?

Well first off... its a "takes power to make power system." So lowering the compression would rob power from the engine and thus increasing the amount of % robbed by the blower.

Also if you are spinning it out of its efficiency range to get more boost out of it, then why lower the compression? From the charts that have been posted in the 335 testing thread, it seems like even the stock pulley is having a drastic drop off at the high side of the rev range.

So my thoughts would be to build the engine to be able to hold all the low end torque and added heat... and building it to make it go back to the same power you would have gotten out of the stock CR seems like a waste.

Now I am no expert, but it just seems like the most logical way to go.

[Ultramaroon]

Originally Posted by Jonesy86

@Ultramaroon I can show you this noise in person. Mine likes to make it during every couple of cold starts. It made the noise most of the way home tonight. Mostly under deceleration/steady speeds.

Also, that bigger sprintex blower sounds amazing. Maybe if I hit the lotto...And they don't all explode.

That would be awesome. I'll come by your pad some morning before you start up.

[Ultramaroon]

Originally Posted by TemeCal

Idler pulley was the first thing I replaced. It obviously didn't do anything for me. I'll have to pull the belt to check the condition of the other pulleys.

I don't recall the squeaking changing when the AC compressor kicks in, but I'll confirm.

My squeaking goes away within a minute of driving.

AC compressor is a hail mary. I'll listen to @Jonesy86's machine. The high-pitched squeak is the only thing that is disconcerting to me. The belt - meh.