Pratte makes it in GRM !!

[Dave Barker]

I was perusing my just arrived copy of Grass Roots Motorsports and an article about the Open Track Challenge when I was suddenly aware of a familiar mug staring back at me from the pages. Dave Pratte in the " Driver's Seat " none the less. Dave does ( did ) that little Nissan scaring rocket actually have 198 hp at the wheels ?? Ohmigawd wouldn't 160 have done ?? Any way congrats Dave on having someone recognize your efforts in print .

[Dave]

Thanks Dr. Dave! I haven't got my copy yet, so I don't consider my 15 minutes of fame to be up just yet :)

And yes, my engine was making 198whp, here's the dyno plot...
http://www.hadamotorsport.com/members/rides/davidp/DynoPlot2.jpg

However, I'm now running a less race-prepped bottom end with slightly lower compression and less displacement, so it's probably making about 185whp now which ain't too shabby in a 2,000 lbs car but it feels a little weak compared to the old engine because of the loss of torque (less displacement sucks). Oh well, we'll see how she runs against Adam's all-might Nissan next weekend :)

[alexb]

The Dude has Rock star status now!

[ADAM]

scan and post the article...

neat dyno chart... holy rev's.....

it will be very interesting to see when we are lapping what the difference coming out of the hole on the back of fabi will make....

you have the rev's and great peak HP...i have low down torque.....hmmm...but that 2000lb weight is a big difference....

very interesting

[Jay]

Baaaaaaaa

Whatever Adam! That is why the car has 6 gears! Just select a low gear....... VOILA! Right back in Lord Vtec's realm...

Although that turn is pretty tight so i expect that for a brief period Dave is actually below the sweet spot of revs with that engine. Do you go to 1st gear there Dave?

Torque....torque Baaaaaaaa Just rev the snot out of it!

:D

[ADAM]

guess we will see now won't we...and you can even ride shotgun with me as a witness :)

though while that motor is making 130 some odd FTLBS at 5k rpm.... i am making 255ftlbs at 3500rpm :) with low boost...ha ha ha ha


though the HP level is very impressive it is due to the very flat torque curve and the ability to rev to 9000rpm!!!! holy high revs... no wonder that motor can't stay together.... poor little motor..poor poor little motor...

how do you get the torque curve to be so flat? is it the VTEC?

hmmmm power to weight
honda=2000lbs 197hp 135ftlbs
nissan=2700lbs 238rwhp 255ftbs

honda= 10.15hp/lb 14.81ftlb/lb
nissan=11.34hp/lb 10.58ftlb/lb

hmmmm...going to be a battle of torque vs HP and gearing then...very very interesting...very very interesting....

p.s radar gun is coming in today

[Bubblecar]

Congrats Dave (or should we start calling you Hollywood Dave?)

Nick

[Dave]

Thanks guys...looks like my car will also be in 'Sport Compact Car' in the fall or winter of this year as well, once I swap out the 1.6L bottom end and put something a little bigger in...either a 1.8L GSR block again or a 2.0L B20 (CRV block with custom pistons, rods, oil squirters, etc). We'll see. I have a solid contact at the magazine who is really keen to published the car once it's ready for the "big time" :)

Adam, the car's power-to-weight ratio isn't quite that good anymore, but with an estimated 185whp on the smaller shortblock I figure it's about 10.81 now, so still a bit better than your Nissan brick, but my power-to-toque ratio will be considerable worse than before. But as far as getting out of the hairpin on the Fabi straight goes, don't underestimate the difference my linear rate race springs will make compared to your cushy progressives, not to mention my short wheelbase which makes the car quite nimble in tight corners. And Jay, I'm in 2nd gear through that corner and I don't drop out of VTEC. Nevertheless, with Adam's torque and higher raw horsepower I'd expect his mph at the end of the straight to be higher than mine, but our elapse time down the straight might be another story. It's like 'chopping down the tree' at the drags, Adam may have higher mph but with a better (faster) entry to the straight I may beat him to the corner.

Anyway, we can crunch the numbers all we want but it's still 90% driver anyway. Tony would kick both our asses in our own cars or in Henry Quan's Type R.

See you next weekend!
Dave

[Shaman]

http://www.rumour.com/422dyno.jpg

My current (soon to be old) RW dyno. :D Not my favourite, because fuel cut isn't until 7100 RPM, but then I don't shift there.

Hopefully in September I can try my slow old car against you guys again.

[Bubblecar]

Originally posted by Shaman
[img]My current (soon to be old) RW dyno. :D

Now don't get me going with one of those mine's bigger than yours debates.

Anyway, just as a side story. Took the Talon to Dyno Power Services last Saturday for tuning. Best so far has been 575 - no nitrous, 642 with a 100 shot. (See - mine is bigger. Ooops, sorry I slipped.)

First pass - the dyno goes crazy and we MAX it out. Straight line up to 1200 HP and never comes down again.

Obviously something went wrong with the computer, but wow - what a dyno chart! If I can get it scanned in, I'll post it sometime.

Nick

[Jay]

Dave wrote:

"And Jay, I'm in 2nd gear through that corner and I don't drop out of VTEC."


Pratte have I ever told you how sexy you are while in VTEC!?!

NEVER GO OUT OF VTEC DAVE!

Watching you out of VTEC would be like watchin Andrew Dice Clay (The Diceman) do his standup routine sans cancer stick!

Eddie Irvine without a smart assed comment!

Anna Nichole Smith post reduction surgery!

Ya Heard!

Fram

[Shaman]

Now try it with no nitrous and plain old Ultra94, Nick. That's what I used... and to make things really on par, no turbo. ;)

[Bubblecar]

Yes - but as your good friend Adam would point out - we did it with FOUR (count'em 4) cylinders!

:D :D :D

Nick

[ADAM]

he he...the show down.....

yeah i really have to get rid of my mushy springs...we will see..we can do a few drags down the 1/4 mile and what happens....though if i lose i could just turn the boost up a little :)

shamen...nice dyno pulls...that would be a fast machine..

jay..your just a hindgrinder... the keiths are cooling as we speak :)



radar gun is in :)

[Shaman]

If I was allowed a turbo in ASP, you could add 200rwhp and 250rwtq to that graph. And that'd be on 92 octane, so I could do One Lap in that trim without looking for any alternative fuel. My friend Paul Morris just set his turbo WS6 up for well over 640rwhp/700rwtq and it idles just like stock, which is good since it'll be his daily driver. :)