Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

dyno loading?

Reply Subscribe

Search this Thread

Old

Sep 4, 2008 | 07:56 PM

#1

Thread Starter

TECH Fanatic

iTrader: (1)

Joined: May 2006

Posts: 1,786

Likes: 43

From: earth

Default

dyno loading?

i dyno'ed on 2 dyno jets.

#1 in vegas, dyno'ed 511/570 , 10psi turbo w/ Salt Lake City tune where i live at.

#2 in utah, dyno'ed 430/530 , 5psi , same tune...

i'm guessing the lower dyno # is because the #2dyno didn't have the brake on for some rolling resistance not allowing the turbo to spool ?

Last edited by hawk584; Sep 4, 2008 at 08:31 PM.

Old

Sep 4, 2008 | 07:58 PM

#2

firefighting1101

TECH Resident

iTrader: (48)

Joined: Sep 2007

Posts: 963

Likes: 0

From: Miami, FL

Default

or the 5 psi difference?

Old

Sep 4, 2008 | 10:37 PM

#3

Thread Starter

TECH Fanatic

iTrader: (1)

Joined: May 2006

Posts: 1,786

Likes: 43

From: earth

Default

i suspect it only spooled to 5psi because there wasn't enough of a load on the motor/turbo due to the drum spinning pretty much freely

Old

Sep 4, 2008 | 11:18 PM

#4

TECH Enthusiast

Joined: Mar 2008

Posts: 635

Likes: 0

From: Largo,FL

Default

Could you post the dyno sheet? That will help evaluate things.

Old

Sep 4, 2008 | 11:27 PM

#5

Thread Starter

TECH Fanatic

iTrader: (1)

Joined: May 2006

Posts: 1,786

Likes: 43

From: earth

Default

i'll post up the dyno sheets tomorrow. the 430 print out is in the garage a few miles away

Old

Sep 6, 2008 | 12:50 AM

#6

TECH Veteran

iTrader: (1)

Joined: Sep 2004

Posts: 4,904

Likes: 906

From: Stockbridge GA

Default

I tried a Dynojet once, and my 9 psi tune barely boosted on the dyno. I kept cranking the boost controller until I got almost 10, then had to imediately turn it down when it tried to spike to 16 on the way home. Dynos are tools, and must be viewed as such. The wrong tool for the wrong job=the wrong result.

Old

Sep 6, 2008 | 01:24 AM

#7

10 Second Club

iTrader: (24)

Joined: Aug 2004

Posts: 7,972

Likes: 4

From: Eternity

Default

Mine had to be locked up on the dyno to see any kind of boost, supercharger though, even with that, it saw a couple more PSI on the track.

Trending Topics

Never knew about this Trans Am before

9

213
Starting issues

20

623
Epic SRK B/S thread of 2019

12.7k

561.0k
Compression check

9

300
4L80e loosing line pressure

30

865

Old

Sep 10, 2008 | 05:14 PM

#8

TECH Regular

iTrader: (2)

Joined: Feb 2004

Posts: 426

Likes: 0

From: 1985

Default

Which shop was the dyno in Vegas - Have heard of a couple places in town dynoing high - then dynoing lower at other locations.

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Old

Sep 10, 2008 | 05:18 PM

#9

TECH Senior Member

iTrader: (7)

Joined: Dec 2001

Posts: 6,150

Likes: 7

From: Orlando

Default

can you post the files, and are they DRF or DLF files? If DRF then no load was used (either, old 248 or non load control 224 dyno's) For a turbo car, you need to use load, and ideally the eddycurrent load, not the brakes.

Reply Subscribe

dyno, loading, turbo

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 03:40 PM.