Baseline Dyno 7/16/08 - Page 2

Tim · #16 07-14-2008, 08:03 AM

I imagine you would have broken 200whp if you had a 5 speed instead of a 6 speed, correct?

TomsSVX · #17 07-14-2008, 10:08 AM

Quote:

Originally Posted by SVXRide

Yeah, your "custom exhaust" includes hand fabricated equal length headers

(remind me of their ID and length?)
-Bill

Quote:

Originally Posted by Tim

I imagine you would have broken 200whp if you had a 5 speed instead of a 6 speed, correct?

Bill, 1.75OD on the primaries... Too big for an N/A car... I probably would have been over 200 wheel if the exhaust wasn't built for an engine twice this size.

Tim, that may be true but I cannot say yes without being skeptical.

Tom

SVXRide · #18 07-14-2008, 11:21 AM

Quote:

Originally Posted by TomsSVX

Bill, 1.75OD on the primaries... Too big for an N/A car... I probably would have been over 200 wheel if the exhaust wasn't built for an engine twice this size.

Tim, that may be true but I cannot say yes without being skeptical.

Tom

Yeah, that's what my memory was telling me

Want to PM me the length of the primaries?
-Bill

TomsSVX · #19 07-14-2008, 11:26 AM

They are between 32-34" with more ground clearance in mind on this set it would have been near impossible to make them any closer in length.

BTW here's the sheet

tom

JaySVX · #20 07-14-2008, 11:32 AM

Nice numbers! I am interested in seeing where this one goes.

TomsSVX · #21 07-14-2008, 11:42 AM

using 27% loss in the driveline rough math puts it about 260 at the crank.

Tom

SVXRide · #22 07-14-2008, 01:44 PM

YT,
Can you get SAE corrected plots? Most of the data in my dyno database have this correction. What gear did you do all of the pulls in?
Thanks.
-Bill

TomsSVX · #23 07-14-2008, 03:14 PM

Quote:

Originally Posted by SVXRide

YT,
Can you get SAE corrected plots? Most of the data in my dyno database have this correction. What gear did you do all of the pulls in?
Thanks.
-Bill

4th gear on my v.8 jdm 6spd. I cannot get the plots... they did 120 pulls on 40 cars that day... So what I have is all that I can get

Tom

RallyBob · #24 07-15-2008, 11:08 AM

Quote:

Originally Posted by TomsSVX

Bill, 1.75OD on the primaries... Too big for an N/A car... I probably would have been over 200 wheel if the exhaust wasn't built for an engine twice this size.

Maybe in your current state of tune, but if you eventually are pushing for more N/A power I think you're okay.

Jack's car runs 32" long 1.75" primaries, and while I honestly thought they were too big initially (we were eventually planning forced induction when I built them), they ended up working quite nicely with our modified high rpm N/A setup.

TomsSVX · #25 07-15-2008, 12:18 PM

Quote:

Originally Posted by RallyBob

Maybe in your current state of tune, but if you eventually are pushing for more N/A power I think you're okay.

Jack's car runs 32" long 1.75" primaries, and while I honestly thought they were too big initially (we were eventually planning forced induction when I built them), they ended up working quite nicely with our modified high rpm N/A setup.

Understood... but I built them in mind for my s/c along with the very large and heavy 2.5" true dual behind them... I am happy with where the car is at... Very consistent and w/o any issues. This means I have a great base to work from... Now I await the ever so important email

Tom

vlmaclean · #26 07-15-2008, 07:27 PM

Quote:

Originally Posted by TomsSVX

They are between 32-34" with more ground clearance in mind on this set it would have been near impossible to make them any closer in length.

BTW here's the sheet

tom

I found this very interesting. I was thinking the 6 could do more with mods. A modded RS 2.5L is putting down the same power here:
http://www.rs25.com/forums/showthrea...2dyno+chart%22

LetItSnow · #27 07-15-2008, 08:02 PM

Quote:

Originally Posted by vlmaclean

A modded RS 2.5L is putting down the same power here:
http://www.rs25.com/forums/showthrea...2dyno+chart%22

The same peak perhaps, but the 2.5L is not nearly "the same" until ~6000 RPM.

Peak power stands for little in my book. It's all about the area under the curve.

TomsSVX · #28 07-16-2008, 09:50 AM

Quote:

Originally Posted by vlmaclean

I found this very interesting. I was thinking the 6 could do more with mods. A modded RS 2.5L is putting down the same power here:
http://www.rs25.com/forums/showthrea...2dyno+chart%22

This is also a baseline... this engine has completely stock internals. If you want to look at an N/A build RallyBob has put together an EG33 RS making 290 at the wheels.

Tom

Myxalplyx · #29 07-17-2008, 07:23 AM

Nice numbers Tom!

Better to compare other cars that have dyno'd on the same dyno. Area under the curve is all good but just remember there are other variables to consider as well. Sure an RS making the same peak with less hp/torque under the curve can appear to be slower all around but if it is lighter (depending on how much lighter), it could blow away an SVX with a better 'area under the curve'. Or two SVX's making the same hp/torque and the same weight but one has lighter weight wheels and junk-inside-the-trunk vs one with heavier wheels and no junk inside. And the variables go on......

Looking forward to seeing how things turn out Tom. A friendly race or two at the track would be nice.

***Heading back into the shadows***

TomsSVX · #30 07-17-2008, 09:03 AM

not charts but here are some numbers from others running the same day...

Tom