Justin's last numbers with TVS

[mustang loco]

Check out Justins last results,pretty amazing,816rwhp.....:wow2:


http://www.svtperformance.com/forums/shelby-gt500-150/743801-816-rwhp-2007-shelby-gt500-vmp-2-3l-tvs.html

[Boston Mike]

Check out Justins last results,pretty amazing,816rwhp.....:wow2:


http://www.svtperformance.com/forums/shelby-gt500-150/743801-816-rwhp-2007-shelby-gt500-vmp-2-3l-tvs.html

I think I heard of someone else getting better with lower boost numbers.......................now where did I hear that..........

[mustang loco]

I think I heard of someone else getting better with lower boost numbers.......................now where did I hear that..........

I think it was a member here,"black shelby" making 832...if I remember correctly...

[JTB]

Impressive!

What's the difference between a VMP TVS and the ordinary TVS?

[Joe G]

I think it was a member here,"black shelby" making 832...if I remember correctly...

Yes. And Jimmy was using regular pump gas, not race gas.

[mustang loco]

Impressive!

What's the difference between a VMP TVS and the ordinary TVS?


From what I've read so far,he's got a machined "snout" to accept a 2.5" pulley...that's all I know for now...

[mustang loco]

Yes. And Jimmy was using regular pump gas, not race gas.

:wow2:,didn't remember that part....

[Boston Mike]

From what I've read so far,he's got a machined "snout" to accept a 2.5" pulley...that's all I know for now...

and a new plenum that looks suspiciously familiar................:sofa:

[65SC]

Yes. And Jimmy was using regular pump gas, not race gas.

on a built engine, heads and 9.2:1cr. plus the p&p Jim has is second to none. well maybe George or Herm

[Tommy Gun]

From what I've read so far,he's got a machined "snout" to accept a 2.5" pulley...that's all I know for now...



More boost equals more heat. :nonono:

[65SC]

More boost equals more heat. :nonono:

more CR less boost

[68fastback]

I think it was a member here,"black shelby" making 832...if I remember correctly...

...and I'd bet with less timing too.

[68fastback]

More boost equals more heat. :nonono:

...right... the goal is the most HP with the least boost -- efficiency -- so the numbers translate to actual use not just on the dyno.

[Gr8snkbite]

Check out Justins last results,pretty amazing,816rwhp.....:wow2:


http://www.svtperformance.com/forums/shelby-gt500-150/743801-816-rwhp-2007-shelby-gt500-vmp-2-3l-tvs.html

late as usual....:doh2:

[blackshelby]

It’s all about keeping the blower as close to its island(look at its compressor map)
You can bring up the efficiency a good deal from opening the inlet and porting the blower but the curve or compressor map will still be the same since it’s the lobe design that creates that curve.(Meaning you can help efficiency but its most efficient area and where it falls off will still be the same)


Now that being said the TVS doesn’t like to be spun faster than 18.5k rpm or so and not operate with boost levels higher than 18psi.

Yes it can be spun faster and yes it can make more boost but its efficiency it starts falling off fast past either one of those.



So spinning it faster creates heat and operating it higher then 18psi creates more heat(Not in its efficiency range at that point)
Its also not only about heat but also how much power it takes to turn the blower



For short dyno pulls you can get get away doing that but for consistent power you want to keep the blower in the range its design to work(Look at its compressor map to understand where that is)


I spent literally thousands of hours on the engine dyno when I was doing R+D and helping developing blowers with procharger.(D series and F series blower)
I plotted many compressor maps ,observing many different lobe design, impeller design, blower designs etc.

I tested many different style blower's while doing this.
Including testing dozen of cylinder heads, 50 plus cam profile designs, different strokes, piston, compression etc.
You name it we did it delevloping those blowers.
We spent over six months straight, doing this testing and collecting data.

I have a pretty good understand what to do do a blower and were one should try to make the blower operate to get the most out of it.

Once you understand the blower then designing cams and building your engine, you want to match it to those specs to get the most out of that one blower design you are using.
What works for one blower might not work as good for another one. But there is some rules that work the same on all blowers. :)

[blackshelby]

...and I'd bet with less timing too.


18 degrees of timing 16 psi through a full exhaust including cats :)

[CH53Driver]

Great info BlackShelby. Thanks.

[68fastback]

18 degrees of timing 16 psi through a full exhaust including cats :)

...that is an extraordinaryg high-water mark ...to make the HP you are at only 16# and only 18* timing! :faint:

[Gr8snkbite]

Great info Jim....knowledge IS power....always loved the fact that my 07 produced 15lbs boost...it was all it needed.

[68fastback]

... see post 18 -lol.

[Gr8snkbite]

Repeat....:doh2:

[68fastback]

That's weird ...when I posted it, the screen returned to the edit panel -- so I hit it again -lol.

[mustang loco]

late as usual....:doh2:


:doh2: