Next Generation in Supercharging Means 275whp!

[turbophil]

Following is a video clip from an outing with my good friend, Ron, yesterday. Ron is a multi-time SCCA Solo champion (his wife is too, how cool is that?).

At this event last year, I was running the m62 (katana/BWR type setup) and Ron would run off down the straights with ease. This year, a different story... in the straights anyway... The man is CON-SIS-TENT and out drives me in the twisties, but my power affords me the speed to catch him in the long front straight... I literally had to half pedal in parts of the straights just to maintain a distance. It was nice to get this comparison under my hat, as I've been wondering how the turbo torque would stack up against TVS power lap after lap...

It's hot and humid for this track day. Ron is running a FF275, Sport Elise, with slicks. His car is both lighter and has less aero drag than mine does, but it still can't hang in the power department...

On a non-TVS related bit, if you ever get a chance to learn from Ron, take the opportunity to listen. The man is gold

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Cheers,

Phil

[robains]

Nice phil, is Ron running the same springs/shocks you are? Ron's car looks pretty good on the body roll front also.

As for Tires vs. Aero, I'd take better tires 95% of the time over Aero for our cars (at least with the Reverie stuff that we have) -- especially with all the low speed corners you have at that track you can't flex the benefits.

As for the TVS it's sad to see I'm guessing Ron is putting down about the same wHP as I - 250 -- that 30 wHP and extra TQ seems to be a real PLUS for your TVS setup. Jealous!

Rob.

[jim-clayton]

Nice video. That dude kicked your a**.


Now quit playing around at the track and get my IC done.

I want more HP for Labor Day.

[turbophil]

Hey Rob,

Ron has the ohlins spring/shock setup with the lotus sport sway bar. He actually stiffened the sway bar a fair bit to take care of some of the yaw. He's got cut steering arms as well. He's running those light rota wheels with his slicks. It's a very well balanced car and with his driving he's hard to pace for a whole session, as he just doesn't make many mistakes.

The turbo setup is making 250whp, but also over 200wtq, it's just doesn't hold it as high in the revs as our TVS setup. It's that whole "usable power" issue and how much of that usable power ya got

Now for a contrast. Here's a short clip of a C6 Z06 with slicks. The guy is a very good driver and an Audi Instructor. He's pulling me on the straights, but not a whole lot... C6Z06s used to leave me like I was up on jack stands in the front straight... This is also another orchestrated cat and mouse game...

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Cheers,

Phil

[turbophil]

Originally Posted by jim-clayton

Nice video. That dude kicked your a**.


Now quit playing around at the track and get my IC done.

I want more HP for Labor Day.

Kicked my arse? C'mon man

The three of us were certainly the pace setters at this event. We were always running right with each other and we were all faster in different portions of the track than the other and would end up with what I presume to be about the same lap time since we never did leave each other. I could always catch Ron in the straights and Bruce in the tight sections at 10-13 and 5-6. It was fun to see where we each did better or worse, which is why we traded places. I was just the only guy with a camera unfortunately.

I guess I could only post videos of "kills" or just driving solo, but that's not as fun

Rob is right about the slicks. The R888s just can't hold like those guys slicks do-- even with the wing...

This R8 was there... He was quick... No Lotus, but quick

[jim-clayton]

Originally Posted by turbophil

Kicked my arse? C'mon man

Just pulling your chain.

[robains]

R8 looks awesome, too bad it's so heavy for it's power.

Put on some Hoosiers and you'd be all over that C6 Z06 like a fly on ****, you'd be on the power so much sooner on exit that he'd pull maybe 1-3 cars lengths max on you on that straight -- rather than say 10 car lengths

Vette's still are one heck of a good bang for the buck for track duty, they need some track prep just like most cars, but not a lot. There's much good to be said about normally aspirated V8 displacement -- I know the motor is pretty old tech (ok very old tech), but it gets the job done in a package that not too heavy.

So your choice is Hoosiers, or an IC and more boost -- which is it going to be? Hopefully your answer is BOTH

[darkSol]

Rob, how much stickier are the R6's over the R888's? How's wear life?

Just asking...

[robains]

David,

Night and day stickier. I found the A048's to have more grip than the 888's. The 888's aren't bad, so don't get me wrong, they're a great street tire, but it'll be a cold day in hell before I give up my Hoosiers for track duty. The 888's are just a stand by tire in case I get a flat and no tire shop at the track to replace it.

So far (read about 4 hours track time) the R6's have VERY good wear, much much much better than any other porker car I pushed around the track on R6's. The Lotus is VERY good on the consumables (tires, brake pads, rotors) - lets not talk about engines.

I have at least another 8 hours left on them.

I obviously have not spent as much time as I would like on the Hoosiers, but so I've experimented with tire pressure and cold 24 seems to work best -- if you have a lot of power/tq you might want to consider 23 in the rear. They do take a couple of laps to come up to temp. I'm running -1.4 front camber and -2.4 rear.

I should take some pics of them and post, the post track wear is amazing, no graining no uneven wear, lots "tread" depth.

Rob

[shay2nak]

The R8 has those Dymag carbon wheels?

[turbophil]

Originally Posted by shay2nak

The R8 has those Dymag carbon wheels?

yessir.. just about everything on that car was carbon. EVERYTHING that wasn't silver was carbon... All the little grills in front, splitter, wing, grills in back, stripe on the side, wheels---- everything! was carbon. Was insanely carboned out.

[E7L]

Turbophil (or anyone else with the BOE system),
Are you bringing the TVS to LOG29? I'm hoping to see/hear one in person.

[turbophil]

I'd love to go, but have a family occasion I cannot get out of... Dave and Jim were going to go, but they're both getting soft on the commitment Perhaps with enough coaxing from ya'll they may still go

I'm not sure about anyone else. Everyone is so far away that it makes it hard to go

We need to start a Dave/Jim chant

[Bavarian Motorist]

That R8 is about 500 lbs lighter than stock with a full CF body, and it's BLOWN to 550+ HP

Truly bad ass!

[shay2nak]

Originally Posted by turbophil

yessir.. just about everything on that car was carbon. EVERYTHING that wasn't silver was carbon... All the little grills in front, splitter, wing, grills in back, stripe on the side, wheels---- everything! was carbon. Was insanely carboned out.

it would be nice to have those Dymag wheels in Lotus sizes.

[sleepe]

Originally Posted by shay2nak

it would be nice to have those Dymag wheels in Lotus sizes.

How light would they be on lss sizes?

[shay2nak]

Originally Posted by sleepe

How light would they be on lss sizes?

I'd imagine they'll be a few pounds lighter than RACs (11 and 13 lbs). I'm guessing the Dymags would be <8 and <10? I think LSS are 13 and 16. I would even think that possibly they would be almost half the weight of LSS wheels, which would be insane.

I don't think they make 16" and 17" yet. I heard talk of it, but you'd have to email them to know for sure. They'll be expensive as hell though.

[darkSol]

Over the past few years I've kept metrics of the performance of my car as it has evolved from a bone stock beastie in August 2005 to the TVS monster it is now...

I've always timed these numbers on the same bits of highway and averaged them in both directions in about the same weather conditions (nice 70 degrees weather)... soft top (or hard top) is on. These are all extracted using my Race Technology DL-1 to eliminate human reaction time - and runs are started and ended a bit below and above the set mph to allow "settling"...

Result Summary:

What I've determined is that acceleration with the TVS is approximately what a stock car is... 2 gears down...

Notice the 60-80 mph times... 4.17 seconds for stock in 4th, 4.62 seconds for the TVS in 6th.

More impressive is the 80-100mph times... 4.62 seconds for stock in 4th, 4.89 seconds for the TVS in 6th. You can basically just leave it in 6th while on the highway to pass almost anything.

Finally my fave is the 60-120mph "double my speed" metric... I was in EvoMind's (slightly modded) C6 Z06 Corvette about 2 years ago and was floored by it's acceleration. Only using 2nd & 3rd gear it was able to rocket from 60-120mph in 7.29 seconds (using a stopwatch). The TVS can do it in 8.78 seconds using 3rd, 4th and 5th... a higher redline (and an intercooler) will undoubtedly drop this number substantially...

<table border=1><tr align='center' valign='top'><td></td><td nowrap>bone stock (na)<br><br>8500rpm redline<br></td><td nowrap>intake+header+<br>decat/exhaust<br>8500rpm redline</td><td>katana supercharger<br>(3.4" pulley)<br>8500rpm redline</td><td nowrap>tvs supercharger<br>(90mm pulley)<br>8200rpm redline</td></tr><tr align='center'><td>whp</td><td>167.31</td><td>177.17</td><td>230.11</td><td>286.44</td></tr><tr align='center'><td>wlb/ft</td><td>120.74</td><td>126.04</td><td>149.15</td><td>186.50</td></tr><tr align='center'><td>weight</td><td>1949</td><td>1896</td><td>1854</td><td>1852</td></tr><tr align='center'><td>lb/whp</td><td>11.65</td><td>10.70</td><td>8.06</td><td>6.47</td></tr><tr align='center'><td colspan=5>&nbsp;</td></tr><tr align='center'><td colspan=5>60-80 mph</td></tr><tr align='center'><td>2nd-3rd</td><td>3.41</td><td>3.19</td><td>2.94</td><td>2.36</td></tr><tr align='center'><td>just 3rd</td><td>2.94</td><td>2.76</td><td>2.21</td><td>1.90</td></tr><tr align='center'><td>just 4th</td><td><b>4.17</b></td><td>3.96</td><td>2.91</td><td>2.63</td></tr><tr align='center'><td>just 5th</td><td>5.39</td><td>5.43</td><td>4.15</td><td>3.87</td></tr><tr align='center'><td>just 6th</td><td>6.35</td><td>6.33</td><td>5.02</td><td><b>4.62</b></td></tr><tr align='center'><td colspan=5>&nbsp;</td></tr><tr align='center'><td colspan=5>80-100 mph</td></tr><tr align='center'><td>3rd-4th</td><td>5.43</td><td>5.11</td><td>4.75</td><td>3.70</td></tr><tr align='center'><td>just 4th</td><td><b>4.62</b></td><td>4.33</td><td>3.83</td><td>2.94</td></tr><tr align='center'><td>just 5th</td><td>6.75</td><td>4.01</td><td>4.40</td><td>3.88</td></tr><tr align='center'><td>just 6th</td><td>7.71</td><td>6.43</td><td>5.41</td><td><b>4.89</b></td></tr><tr align='center'><td colspan=5>&nbsp;</td></tr><tr align='center'><td colspan=5>60-120 mph</td></tr><tr align='center'><td>2nd-5th</td><td>15.24</td><td>14.20</td><td>12.39</td><td>9.23</td></tr><tr align='center'><td>3rd-5th</td><td>14.77</td><td>13.77</td><td>11.67</td><td><b>8.78</b></td></tr><tr align='center'><td>4th-5th</td><td>15.65</td><td>14.65</td><td>11.73</td><td>9.24</td></tr><tr align='center'><td>just 5th</td><td>20.15</td><td>19.41</td><td>13.86</td><td>12.14</td></tr><tr align='center'><td>just 6th</td><td>26.23</td><td>25.83</td><td>16.87</td><td>14.95</td></tr></table>

Enjoy!

[toedrag]

holy crap. this is the kind of thing that makes me want to just install a TVS and void my warranty....

must.....resist.....until Nov.....AHHHHHHHH

Thanks for posting. fun data to read. (fun data to make, no doubt)

[breinhar]

Ahh the temptation is correct.

Just not ready for a new clutch and doing my own tuning, although I am interested in doing my own tuning as a computer guy.

Someday.

Great info, Thanks.