any gains by using the bigger compressor cover? assuming they ahve the same a/r

 

I would also like to know. Since I have a S cover t4 SC61.

 

bump

 

also would like to know.

 

From everything I've seen - it just depends on the wheel in there. Some wheels will like the S cover, while some will like the E cover more.

I know the 60-1 wheel is slightly more efficient in the E cover versus the S cover.

 

E and S have a different A/R so how can they stay the same? Or are you talking about the turbine housing?

 

i beleive they are talking about the housing....imo the main reson people would go w/a smaller housing is for size/spacing issues.....I would assume the larger housing is going to flow more

 

I believe there is a loss of efficiency when going from a .60E housing to a .70S housing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DefiantGSR &raquo;</TD></TR><TR><TD CLASS="quote">I believe there is a loss of efficiency when going from a .60E housing to a .70S housing.</TD></TR></TABLE>
I've heard the other way around but I have not seen proof of this.

Ive seen same hp on set ups that are the same, but Ive never seen a back to back test done. hmm, this could be something to test on the engine dyno.

 

Saw this in another thread....

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rod Short &raquo;</TD></TR><TR><TD CLASS="quote">
The SC63 is actually more expensive than the SC61, but not a lot more powerful. We rate the SC63 at 700-hp, which is only twenty more than the biggest SC61. By the time you add an S style compressor cover (4" inlet / 2.5" outlet), you already picked up 10 to 15 hp, which would put you just about there. The SC61 has a much more efficient compressor wheel.</TD></TR></TABLE>

That goes along with what I've always heard about larger a/r comp housings.

 

hmm.. well we have access to and e and s cover for the gt3071r.. we might just have to test this out one day..

 

sounds good, if you have the time give it a shot - we'd all be interested in the results