[Build Thread] -- Journey to 700+ WHP [Supercharger]

[Optimiser]

Originally Posted by cupcakez

/keeping my blower going to repair it and use it then put two shipping plugs on it instead of one to keep the oil from spilling.

i have a sound clip straight from 928motorsports representative saying that vortech recommends this.

I've never heard of Vortech recommending using the shipping plugs instead of the breather plug, instead the exact opposite. So I think what you say 928 says in "a soundclip" is BS!

"Once installed in the car you MUST install the vent or the case will over pressurize and blow the seals out".

"The solution for the spilling out the breather hole is to fill the unit with less than 4 ounces".

"After pressing Vortech tech help on the issue they tell me that for road racing in particular you need just 2.5 to 3 ounces to compensate for the oil expanding at temperature. More than that amount and it barfs it out".

[cupcakez]

Originally Posted by Optimiser

I've never heard of Vortech recommending using the shipping plugs instead of the breather plug, instead the exact opposite. So I think what you say 928 says in "a soundclip" is BS!

"Once installed in the car you MUST install the vent or the case will over pressurize and blow the seals out".

"The solution for the spilling out the breather hole is to fill the unit with less than 4 ounces".

"After pressing Vortech tech help on the issue they tell me that for road racing in particular you need just 2.5 to 3 ounces to compensate for the oil expanding at temperature. More than that amount and it barfs it out".

I've only heard of one person's seals blowing out throughout all the people who seal both holes with shipping plugs with 928 upgrade.

Filling it up with 4 oz and then having it spill is pretty much the same thing IMO as filling it up with less than 4 oz it will stop when it stops.

You're right. They did recommend the exact opposite at one point.
Either 928 is lying out of their *** so they can make Vortech look bad, and that they can get more business from broke 928 blowers just for plugging both holes up, or they are telling the truth because they are finding out that tons of people are calling 928 and letting them know that plugging up both holes is actually working for them.

Not sure.

I guess we'll find out.

Either case, I'd rather blow out the seals than seize it up if I had to choose one or the other

[redondoaveb]

Originally Posted by Optimiser

I've never heard of Vortech recommending using the shipping plugs instead of the breather plug, instead the exact opposite. So I think what you say 928 says in "a soundclip" is BS!

"Once installed in the car you MUST install the vent or the case will over pressurize and blow the seals out".

"The solution for the spilling out the breather hole is to fill the unit with less than 4 ounces".

"After pressing Vortech tech help on the issue they tell me that for road racing in particular you need just 2.5 to 3 ounces to compensate for the oil expanding at temperature. More than that amount and it barfs it out".

928 basically told me the same thing although they didn't say Vortech recommends plugging the vent hole, they did say that Vortech told them it would not hurt it. Needless to say, I wasn't willing to take that chance but I was thinking of putting a pressure gauge on there to see how much pressure it does produce.

[cupcakez]

Originally Posted by redondoaveb

928 basically told me the same thing although they didn't say Vortech recommends plugging the vent hole, they did say that Vortech told them it would not hurt it. Needless to say, I wasn't willing to take that chance but I was thinking of putting a pressure gauge on there to see how much pressure it does produce.

Well I called them 2 weeks ago and they told me that Vortech told them that; not sure how recent you spoke to them about it though

[redondoaveb]

Originally Posted by cupcakez

Well I called them 2 weeks ago and they told me that Vortech told them that; not sure how recent you spoke to them about it though

It's been a couple of months when I talked to them.

I would love to see something in writing from Vortech where they recommend running 2.5 to 3 ounces instead of 4. Then I could put my 2.85 pulley back on and not have to worry about oil spitting out. I know some people run them a little low but 2.5 to 3 seems excessively low.

[cupcakez]

[Update]:

928 Bearings Rebuild Package finally came in this afternoon.

Will have the blower rebuilt tomorrow by the same person who built it earlier this year!

Then going to have it installed probably Friday.

Here's hoping that I can be back on the road soon!

[Hotrodz]

Originally Posted by cupcakez

[Update]:

928 Bearings Rebuild Package finally came in this afternoon.

Will have the blower rebuilt tomorrow by the same person who built it earlier this year!

Then going to have it installed probably Friday.

Here's hoping that I can be back on the road soon!

Good luck!

Sent from my SM-G965U using Tapatalk

[cupcakez]

I agree. Something in writing would be amazing. Although mine seized up due to having sufficient oil to low enough to where it stopped working lol. Which means it consistently spilled out. How much was left? Not sure. I should have measured it but I didn't lol.

Plugging both holes... ill let you guys know how it goes, xD

[TopgunZ]

Why would vortech go through the trouble and cost of having a machined plug replace an already installed plug if it serves no purpose?

[redondoaveb]

Originally Posted by TopgunZ

Why would vortech go through the trouble and cost of having a machined plug replace an already installed plug if it serves no purpose?

Exactly why I didn't put a shipping plug in mine.

[cupcakez]

Originally Posted by redondoaveb

Exactly why I didn't put a shipping plug in mine.

Not sure lol.
Perhaps maybe they only say it for the 928 upgraded internals? Honestly I'm still confused as to if vortech really said that or if 928 just is putting words in their mouth.

[Optimiser]

Originally Posted by cupcakez

Not sure lol.
Perhaps maybe they only say it for the 928 upgraded internals? Honestly I'm still confused as to if vortech really said that or if 928 just is putting words in their mouth.

I would trust the original manufacturer, Vortech, and not 928 and NOT risk it. Use a bit less SC oil as suggested and USE the vent plug.

[cupcakez]

Originally Posted by Optimiser

I would trust the original manufacturer, Vortech, and not 928 and NOT risk it. Use a bit less SC oil as suggested and USE the vent plug.

Thats what seized my blower in the first place. Doing exactly that...

I mean I can do that again, I just need to buy 100 bottles of SC oil so I can keep refilling it every couple days lol..and I'd continually have a mess in my engine bay due to engine spilling everywhere.

Or...

I can plug both holes up.

Or...

I can come up with some custom solution to circumvent this issue, and if it works, I can increase the PSI with no issue at all while still keeping all the oil in the blower lol

If plugging both holes fails me, I'll rebuild it a 2nd time and this time, I will use my last resort plan, which I think may work

[TopgunZ]

Why dont the other 600+ who guys have this problem?

[cupcakez]

Originally Posted by TopgunZ

Why dont the other 600+ who guys have this problem?

I don't know. That's what I'm wondering too xD

But it is definitely known across the board for the 928 upgrade, that the oil is spilling.

Perhaps it is the 928 impeller that is causing the issue and maybe I need to purchase the Si impeller and just replace the 928 with the Si...and then maybe I wouldn't get any oil issues.

That's another idea I have.