G1 issue

[Sconi Guy]

This is what I get for buying a used supercharger unit. Got it all installed, tune added, start it up and I get a terrible sound from the engine bay. I'm no mechanic, but this can't be a normal sound. I'm just seeing if anybody has ideas on what I need to do and how bad it really is.

https://youtu.be/Od_70evg9NE?si=kIiXVbb-XAf12Opg


Thanks in advance.

[omgzirra_exe]

probably blown blower, and needs rebuild, sounds like the drive shaft is broken. see if there is any play in it, and remove the blower kit ASAP.

[Soden82]

Can’t really tell but my guess is the gears are damaged and the blower may need to be rebuilt

[Oreo Cat]

does anyone have a link to a rebuild kit?

[e90_503]

You sure its a G1 with the upgraded blower unit?

I have a VT1-550 kit with the older blower and it sounds like a can of rocks at idle. Purchased refurbed from ESS, sent them a video, they confirmed it is fine...

[Sconi Guy]

Originally Posted by e90_503

You sure its a G1 with the upgraded blower unit?

I have a VT1-550 kit with the older blower and it sounds like a can of rocks at idle. Purchased refurbed from ESS, sent them a video, they confirmed it is fine...

Funny you should say that. The owner of ESS just emailed me back and stated that it's actually a normal sound at idle. Something to do with the synchro gears. He said as long as the sound smoothes out when you increase rpm it's all good. I checked and the sound does go away above idle.
He suggested I do a 50/50 mix of supercharger oil and royal purple 75w90 to help with better lube adherence. He was super friendly and even offered to check it over for me if I was still worried. Based on his response and friendliness, I'm an ESS fan for life.

[Scharbag]

Yeah - I have a G1 and it sounds like a bag of loose bolts for sure. Noise goes away as soon as you lift the revs is my experience - it is also louder when cold I find but it is so worth it when you roll into it at 5000RPM

[amrazM]

that sounds normal. the vortech heads are way louder.

[omgzirra_exe]

well things i learned lol.

i knew my rotrex has annoying belt whine, but it never made these type of noises although different blower i suppose.

never heard it much on my friends who do have ESS VT/G1 blowers.. maybe i just never noticed.

[e90_503]

Originally Posted by Sconi Guy

Funny you should say that. The owner of ESS just emailed me back and stated that it's actually a normal sound at idle. Something to do with the synchro gears. He said as long as the sound smoothes out when you increase rpm it's all good. I checked and the sound does go away above idle.
He suggested I do a 50/50 mix of supercharger oil and royal purple 75w90 to help with better lube adherence. He was super friendly and even offered to check it over for me if I was still worried. Based on his response and friendliness, I'm an ESS fan for life.

Great to hear you don't have issues. That note about 75W90 is interesting - you gonna try the concoction? I may reach out myself to confirm as well. My VT1 blower is kinda embarrassingly loud at idle haha.

[Shrike360]

Here I was thinking the G1 was pretty loud, considering it's all you really hear from the front of the car while idling. Just a high pitched gear whine.

[Sconi Guy]

Originally Posted by e90_503

Great to hear you don't have issues. That note about 75W90 is interesting - you gonna try the concoction? I may reach out myself to confirm as well. My VT1 blower is kinda embarrassingly loud at idle haha.

I'm going to run it for a few weeks and then change the oil out for what was suggested. I don't see how it could hurt and I doubt the owner would be trying to get me to nuke my blower.