I have the V2 SQ trim and I asked Carl at 928 if his impeller will fit it? his answer was , MAYBE. He says if it's an earlier model , it might fit..He would need the blower to answer the question...If no fit, pay only shipping..

 

For the record I have a V2 SC trim with the 928 impeller.

 

Me too...928 impeller...Sc trim...good for 600whp

 

So a newer V3 SCi blower won't work with a 928 then. Can you purchase a new V3 unit in S trim? Sorry for the confusion.

 

I think Vortech has discontinued the S/SC trim for the V3, so you probably can't get the S or Sc trim brand new...you may be able to call Vortech and see if they will sell you an old S or Sc trim volute, I believe someone here tried it and managed to get their hands on a S trim volute.

 

Interesting...

FWIW, the 928M was first advertised for both S and SC trim blowers. However, the site currently only says S trim. There's a possibility that the S and Sc trim volutes are identical, if not really close, to spec.

Also FWIW, I had the 928M installed on my SCi trim volute. The impeller fit and made 14psi. I sent the blower to 928M, and I was told I had the improper trim. I then switched to a S trim volute and produced 18psi.


Hard to argue with facts!


Correct. I was the guy who actually got one from Vortech. The nice gentleman at Vortech had a old S trim volute that was on the shelve for 3 years. He wouldn't sell me the volute without sending them my blower however.

It's going to be hard to find a S trim volute from Vortech since they are discontinued. I would recommend calling Vortech and maybe ask if they can hold one on the side for you if one comes in for an upgrade. Apparently, they ship the old parts off to scrap. Else, you might want to search mustang forums, as some of the kits have identical volute styles.

 

Makes sense, but sucks. So really the only way to max out an SCi blower is with a smaller pulley, regardless if it's V2 or V3.

 

Well this is funny

 

Now is one bolt reverse threaded? Bcuz I got the jackshaft pulley bolt off and I'm stuck with the other pully just spinng.
Or is it just pushed in

 

whoa, looks like your jackshaft is installed on the wrong side of the bracket

anyway, you either need to break both bolts loose at the same time, or use a strap wrench to hold one of the pulleys still.

 

Yea idk what the hell happend,someone was having a bad day or something.

I'm gonna go get a sw tomorrow.
Thanks.

O do you happen to know the tq specs on thos pulleys?

 

FWIW the 928 impeller was designed around an SC trim blower. The Sc and S are identical but the SC has the tips of the impeller trimmed to reduce tip velocity.

The increase in boost that was seen may have coincidental due to a volume being tighter than the last due to machining tolerances.

 

Interesting... I'm curious to know why it's no longer being advertised for the SC trim on the website. I'm sure putting that back up would attract more business and cause less confusion, but .

Aren't you the guy who's father-in-law is Carl? I could have sworn a member on here made that comment. If so, I trust you're info especially if it came from the source. lol

 

I am his son-in-law. If I were to guess, there must have been an issue where someone had an Si trim blower and ordered the 928 impeller and had a figment complaint. Carl must not have been aware of the mixup and assumed the complaint was legit.

The reason I know it fits an SC trim for a fact is because it was my SC blower that was sent out East to be reverse engineered for a couple of months. I also did the initial testing with the same blower.

 

SQ is not a trim FYI. SQ indicates helical gears for quieter operation and nothing else.

 

Yea , found that out after calling Vortech early this week...I have the SC trim which I understand is compatible with the 928...

 

Have you seen or do you have any dyno's results comapring the pre and post 928 on a Vortech SC blower??

 

Found 05Z33 pre post dyno with the 928 impeller...Impressive delta..

 

And that's without spinning it to the max impeller speed; there is significant power to be had from the 928...

 

All these are from my car during initial testing of the impeller:

BOOST GRAPH:


POWER GRAPH (SWAPPED IMPELLER OUT ON DYNO):


VIDEO:
http://www.youtube.com/watch?v=Qt8YD...4&feature=plcp

People have seen even better results then me but the above information was the initial testing.

For good measure here is a video of why my 928 Vortech is no more though....

http://www.youtube.com/watch?v=MdgZs...6&feature=plcp