going to the DYNO tomorrow

[cooljess76]

Originally Posted by tiFreak

you only lost 9 hp and 3 ft./lbs., that's actually not too bad for the age

isn't the stock 139hp rated at the crank? If so, that means he's only lost 9hp between the flywheel and rear wheels which is awesome

edit; whoops, went outside to talk to the neighbor, chimed in late

[HuGo]

I have a noob question...

I know HP is added with modifying parts. And if you lose weight on the car you'll eventually go faster. I think 1hp for every 10lbs lost. now my noob question...

Can losing weight on the car actually give you more rwhp on the paper/dyno?

Ex... Car with full interior with mod 1, mod 2, mod 3 making 150rwhp and 160tq.

and, same exact car and mods (mod1, mod2, and mod3) with no interior with 100lbs shaved making 1xx rwhp and 1xx tq... when putting it on paper/dyno. Being lighter making the rollers go faster? Yes noob i know. That's why i am asking :P

I hope this made sense?

[cooljess76]

Originally Posted by HuGo

I have a noob question...

I know HP is added with modifying parts. And if you lose weight on the car you'll eventually go faster. I think 1hp for every 10lbs lost. now my noob question...

Can losing weight on the car actually give you more rwhp on the paper/dyno?

Ex... Car with full interior with mod 1, mod 2, mod 3 making 150rwhp and 160tq.

and, same exact car and mods (mod1, mod2, and mod3) with no interior with 100lbs shaved making 1xx rwhp and 1xx tq... when putting it on paper/dyno. Being lighter making the rollers go faster? Yes noob i know. That's why i am asking :P

I hope this made sense?

You're thinking about power-weight ratio. Hp is Hp, the dyno doesn't know the difference. Now if you take a big ass Mustang and put it against a Ti with the same horsepower, the heavier car will get smoked. Another thing to take into consideration is gearing. Our 3.46 LSD's will leave most e36/e46 M3's off the line, but we'll rev out much quicker which will limit our top speed. For example, in a quarter mile, a 332ti vs. a stock e46 M3 should be an easy win. Even though the e46 M3 makes about 70 more hp than a s52 swapped Ti, the Ti is much lighter and our gearing is lower. By the end of the 1/4, the e46 will probably just be catching up.

[HuGo]

Originally Posted by cooljess76

You're thinking about power-weight ratio. Hp is Hp, the dyno doesn't know the difference. Now if you take a big ass Mustang and put it against a Ti with the same horsepower, the heavier car will get smoked. Another thing to take into consideration is gearing. Our 3.46 LSD's will leave most e36/e46 M3's off the line, but we'll rev out much quicker which will limit our top speed. For example, in a quarter mile, a 332ti vs. a stock e46 M3 should be an easy win. Even though the e46 M3 makes about 70 more hp than a s52 swapped Ti, the Ti is much lighter and our gearing is lower. By the end of the 1/4, the e46 will probably just be catching up.

But HP is HP with the mods accordingly? That's what I thought.

[pdxmotorhead]

Yep the dyno is measuring only direct HP, effective is after the car leaves the Line!

Dave

[Jean H.318TI]

some videos of the bimmer dyno day, first is the stage 2.5 HPF M3, 350z, e30 with M60 swap and my lil toy lol, there was also some other sick cars, more videos later.

tip: Press PAUSE when he zooms in on the dyno graph

http://www.youtube.com/watch?v=0awSuqWZIoQ

http://www.youtube.com/watch?v=rvmBTFvc6ho&feature=sub

only my TI

http://www.youtube.com/watch?v=GplM7pVePqg

http://www.youtube.com/watch?v=w0DuKhVYGQY

http://www.youtube.com/watch?v=Ulthi43w-Hs

http://www.youtube.com/watch?v=Z18lWQpQxZ0

[cooljess76]

Nice vid Jean! That HPF M3 WoWWWW!

tip: Press PAUSE when he zooms in on the dyno graph

[Jean H.318TI]

Originally Posted by cooljess76

Nice vid Jean! That HPF M3 WoWWWW!

tip: Press PAUSE when he zooms in on the dyno graph

thanks

yeah that HPF M3 is so sickkkk, have u seen the stage 4? that is insane

[jaimito79]

Cool video man. What numbers were you anticipating? It's nice to see a Ti on the dyno. Looked like a lot of fun. I probably would not of slept the night before do to the excitement. Thanks for sharing.

[Jean H.318TI]

Originally Posted by jaimito79

Cool video man. What numbers were you anticipating? It's nice to see a Ti on the dyno. Looked like a lot of fun. I probably would not of slept the night before do to the excitement. Thanks for sharing.

i was anticipating somewhere between 100 and 120 tops, and yeah the first couple times going to dynos/track/drives i couldn't sleep the night before but now is normal, pretty much weekly stuff.

[Jean H.318TI]

more videos added ^^^^^^^^^

[jaimito79]

Wow, that boosted Silver e36 M3 almost had as much juice as that e90 M3. Man, you could totally hear the motor in that black Ti. Was that shop doing a promo that day, or did you guys split the bill? Never had a chance to get my Ti on a dyno.

[Jean H.318TI]

it was a bimmer dyno day but every body pay for their own dyno run only $85

[gimp]

Originally Posted by HuGo

But HP is HP with the mods accordingly? That's what I thought.

You can actually get higher numbers on a dyno with lighter wheel/tires/brakes, but doing something like removing the seats before a run will not show up on the graph.

[mohaughn]

Originally Posted by pdxmotorhead

Yep the dyno is measuring only direct HP, effective is after the car leaves the Line!

Dave

On a loading dynamometer that is the case, a dynojet is an intertia dynamometer, so it is really only measuring how fast the car can spin the drum. Dynojet numbers are corrected/calculated, and do not tell you anything about real world horsepower.

A dynojet is good for doing exact comparisons on the same exact car, but you can't compare the BMW rated 129HP to a dynojet reading an make any kind of correlation about how much power you gained or lost.

You can only compare dynojet numbers to dynojet numbers. Any other loading dyno would give you different numbers, and it could be a lot different. Dynojets are very well known to always read high.