S478 vs S480

[Shocker444]

Looking to pick up a primary charger for my twin build, I am going to be going with a T6 foot, 1.32 ratio housing but not sure what compressor size to get. Do the 8 blade s480s spool that much slower than the 7 blade s478s? I see they are the same price, just wondering.

[DRTurbo]

Looking to pick up a primary charger for my twin build, I am going to be going with a T6 foot, 1.32 ratio housing but not sure what compressor size to get. Do the 8 blade s480s spool that much slower than the 7 blade s478s? I see they are the same price, just wondering.

The new 78mm is a 6 blade design, flows 112lbs/min and is the same weight comp wheel as the 71 :nail:. Spools ridiculous fast and makes BIG power. It will flat outspool the 80mm all day long by a good margin.

[zstroken]

The new 78mm is a 6 blade design, flows 112lbs/min and is the same weight comp wheel as the 71 :nail:. Spools ridiculous fast and makes BIG power. It will flat outspool the 80mm all day long by a good margin.


How about max HP?

[DRTurbo]

How about max HP?

It will make with a race cover right at 1200hp is what we have squeezed on the dyno......crank #'s. Its 40 grams lighter then the 80mm wheel and 5 grams lighter then even the 71 wheel.

[zstroken]

It will make with a race cover right at 1200hp is what we have squeezed on the dyno......crank #'s. Its 40 grams lighter then the 80mm wheel and 5 grams lighter then even the 71 wheel.


Thanks, I meant between the 80 and the 78. Does the 80 still have the edge on top end flow?

[DRTurbo]

Thanks, I meant between the 80 and the 78. Does the 80 still have the edge on top end flow?

The 80 does have a touch more top end flow.....but just not the response. The 78 seems to be the happy ground for us....we get the ~ power of the 80 and the response of the 71mm.

[zstroken]

The 80 does have a touch more top end flow.....but just not the response. The 78 seems to be the happy ground for us....we get the ~ power of the 80 and the response of the 71mm.


Thanks!

[Signature600]

That 6 blade 78 wheel is a wicked mother for sure....have one running on a VE truck and it will spool about 40' off the starting line, even on that little engine:D

Hmm...make's me think about something...
Chris:evil

[DRTurbo]

That 6 blade 78 wheel is a wicked mother for sure....have one running on a VE truck and it will spool about 40' off the starting line, even on that little engine:D

Hmm...make's me think about something...
Chris:evil

Dang right, we have been building a ton of them for some of the big diesel shops, and they love them...have yet to hear 1 single negative feedback. All of them have said....holy crap it spools fast...lol :lolly:

[NickTF]

Dang right, we have been building a ton of them for some of the big diesel shops, and they love them...have yet to hear 1 single negative feedback. All of them have said....holy crap it spools fast...lol :lolly:

The 78 will not spool as fast as a 71 in single applications with the same turbine side or is that incorrect?

[DRTurbo]

The 78 will not spool as fast as a 71 in single applications with the same turbine side or is that incorrect?

On the dyno/track it is pretty close...... :charger:

[Signature600]

On the dyno/track it is pretty close...... :charger:

Yeah...the 78 is fast.

Expect a PM Jose!
Chris

[Howling]

What about a 7 blade 75 in a single application compared to the 6 blade 78?

[DRTurbo]

Yeah...the 78 is fast.

Expect a PM Jose!
Chris

;)....

[DRTurbo]

What about a 7 blade 75 in a single application compared to the 6 blade 78?

78 will flow more air, 75 does have a slight edge on pressure, but less flow at any equivalent pressure of the 78.

[RedBowTies88]

What about a 7 blade 75 in a single application compared to the 6 blade 78?

also interested in this :) spoolup time 75 v.s. 78mm

[94 12valve]

The 78 will not spool as fast as a 71 in single applications with the same turbine side or is that incorrect?

go for it nick :rockwoot: make sure to post your results

[Blacksdieselhp]

The 78 is an awesome piece. We have one from Bullseye and it spools crazy fast. The truck went quite a bit faster with the 78 vs the 75 and spoolup is almost the same.

[Big Swole]

Been told there is a mod for my 480 race cover that is a 7 blade wheel from ED, Heard it spools better and flows more... Supposed to be great for a truck like mine with twins which is a street / strip truck...

Are all 7 blade wheels smaller than the 80?
I wasn't told that it was a different size... Even if it is though, if its better and I can still make my 800+ hp but with quicker spool, Then it sounds like a plan!!

Should I have mine modded to put under my current 62/71/13ss?

Thoughts?

[shiftycapone]

Is the 83mm turbine enough for the 78 or would it be a good idea to move to the 87mm?

[DRTurbo]

Been told there is a mod for my 480 race cover that is a 7 blade wheel from ED, Heard it spools better and flows more... Supposed to be great for a truck like mine with twins which is a street / strip truck...

Are all 7 blade wheels smaller than the 80?
I wasn't told that it was a different size... Even if it is though, if its better and I can still make my 800+ hp but with quicker spool, Then it sounds like a plan!!

Should I have mine modded to put under my current 62/71/13ss?

Thoughts?


We have the billet 80's and they work pretty decent. About a 20-30hp gain max, but it comes at a price. Most of our customers just move up to the 82mm cast wheel and its not as pricey. If you want a big jump in power and keeping spool around the same, swap to the GT47. RonA went from a BW400-80mm to the GT47-88, spooled around the same and alot more power.

[DRTurbo]

Is the 83mm turbine enough for the 78 or would it be a good idea to move to the 87mm?

The 83m turbine is the will drive the 78mm comp wheel, but its at the edge for sure. We really like to go to the 87, or the 92mm turbine with it. Also we have the fast spooling 87mm turbine wheel which is a lower trim....spools faster, but flows about 1 lbs/min less. Not much difference in flow, but it really responds quite nicely.

[Big Swole]

We have the billet 80's and they work pretty decent. About a 20-30hp gain max, but it comes at a price. Most of our customers just move up to the 82mm cast wheel and its not as pricey. If you want a big jump in power and keeping spool around the same, swap to the GT47. RonA went from a BW400-80mm to the GT47-88, spooled around the same and alot more power.

Well, more power isn't really my concern.. I'm conservative on my injector size compared to others...

It's the Spool off idle from a stop while street driving that I'm concerned with, so as to keep my smoke level down as much as possible. All the while Keeping my same Power level...
Unless I can afford to someday turn it into a devoted race truck, 800-850 like I currently have is enough...


I'm still a bit unclear what options there are for my 480 with race cover..
8,7,6 blade
Billet or Cast

Whats going to acheive my goal of spool / power for a decent price?
ED said it was approx. $375 for the 7 blade mod..

Is this comparable to you guys?

[DRTurbo]

Pricing is the same...

As for the 80, its a 7 blade, cast is an 8 blade. If you want a quick spooling unit, then the GT47-80 is better suited, or the S400-80 with the 92mm turbine wheel and 1.10A/R T6 housing. Its a beast...

Well, more power isn't really my concern.. I'm conservative on my injector size compared to others...

It's the Spool off idle from a stop while street driving that I'm concerned with, so as to keep my smoke level down as much as possible. All the while Keeping my same Power level...
Unless I can afford to someday turn it into a devoted race truck, 800-850 like I currently have is enough...


I'm still a bit unclear what options there are for my 480 with race cover..
8,7,6 blade
Billet or Cast

Whats going to acheive my goal of spool / power for a decent price?
ED said it was approx. $375 for the 7 blade mod..

Is this comparable to you guys?

[DieselheaD]

are all s478's 6 blade? or is there a 7 blade too.


just wondering i was reading my march2011 diesel power magazine and they claim the CR truck owned by josh gruis is running a 478, but it looks like a 475(7 blade)

[DRTurbo]

are all s478's 6 blade? or is there a 7 blade too.


just wondering i was reading my march2011 diesel power magazine and they claim the CR truck owned by josh gruis is running a 478, but it looks like a 475(7 blade)

They do make a 7 blade 78mm wheel as well.....flows less air though and weighs more then the 75.....its not a lightweight version. We carry them as well for customers that may have surge issues with running the 6 blade as a single.

[DieselheaD]

They do make a 7 blade 78mm wheel as well.....flows less air though and weighs more then the 75.....its not a lightweight version. We carry them as well for customers that may have surge issues with running the 6 blade as a single.

gotcha. so your saying a 7blade 78 moves less air than a 7blade 75? i understand its heavier.

whats the ideal highest PR for the 6blade 78 and a guesstimate of how many lbs/min it would be moving there?


i can see how the 6 blade might surge with the smallest of s400 turbines, people put these compressors on wrong points of the map at most critical times of producing power on applications that they "think" more boost or tighter a/r turbine housings are the answer to huge power or quick "spool"

i like the sound of a 478 6blade with a 87mm inducer turbine .9-1.1 t4. any idea price wise?

on my buddys truck we ran a 471-83/74 .9 a/r and it ran great very driveable. on the top end a little to hot for comfort 50-60 psi in the gauge.

now its got more fuel enough for 700-800+ on fuel and the stall is going to get changed higher. so i think the 478 (6blade) with bigger turbine would work great

[12vchevydually]

They are awesome!!!! They even sound mean!!!

[NickTF]

go for it nick :rockwoot: make sure to post your results

Lol not happening anytime in the near future but certainly interesting to kick some tires about.:Cheer:

[Extended Power]

Jose, could you PM me a price on this "new" 78mm turbo with all the spec's and dimensions please?
(Would like to know if it will fit where my S480 is now...)

Thanks

[TheBigNasty]

While we're all asking comparative questions....... Say you have the std 480 1.32. Is it better to jump it to the 88 or 91 wheel or just move to a gt50 with 88?

[bsmith]

While we're all asking comparative questions....... Say you have the std 480 1.32. Is it better to jump it to the 88 or 91 wheel or just move to a gt50 with 88?
If you want more air and less drive pressure, then yes gt 50 with 88 is what you want. It has the best turbine technology.

[inline6power]

Jose can you pm me a price to up my 7 blade 475 to the 6 blade 78 wheel? Thanks

Sent from my ADR6400L using Tapatalk

[DRTurbo]

While we're all asking comparative questions....... Say you have the std 480 1.32. Is it better to jump it to the 88 or 91 wheel or just move to a gt50 with 88?

The GT50 is all about drive pressure. Its a beast. BUT, if you don't have a drive pressure issue, then their is no reason for the GT50.