Notification

Icon
Error

Login


Take the time to read our Privacy Policy.

BAD WB Offline
#1 Posted : Monday, 23 June 2008 9:27:15 PM(UTC)
BAD WB

Rank: Member

Reputation:

Groups: Registered
Joined: 13/06/2007(UTC)
Posts: 113

Is there a way to work out how much hp is lost through the drive train with out putting it on the dyno, Say if you already have the figures for the engine?
Steve_in_Adelaide Offline
#2 Posted : Tuesday, 24 June 2008 2:35:47 AM(UTC)
Steve_in_Adelaide

Rank: Member

Reputation:

Groups: Registered
Joined: 8/04/2008(UTC)
Posts: 46

About a 20% loss (in general)

Aqua HQ GTS 350 Coupe
White SS Hatchback Torana 355
Aqua HQ GTS 350 Coupe
White SS Hatchback Torana 355
jabba Offline
#3 Posted : Tuesday, 24 June 2008 7:18:16 PM(UTC)
jabba

Rank: Member

Reputation:

Groups: Registered
Joined: 17/04/2005(UTC)
Posts: 465

There is a drag racing site (which I cant track down) where you factor in acceleration, weight, tyre size, etc and it spits out an "effective" hp reading.

Is called an HP Calculator or something of that nature.
________________________________________

Edited by user Tuesday, 24 June 2008 7:18:53 PM(UTC)  | Reason: Not specified

__________________________________________
Keep the shiny side up, and the greasy side down.
jabba Offline
#4 Posted : Tuesday, 24 June 2008 7:18:16 PM(UTC)
jabba

Rank: Member

Reputation:

Groups: Registered
Joined: 17/04/2005(UTC)
Posts: 465

There is a drag racing site (which I can't track down) where you factor in acceleration, weight, tyre size, etc and it spits out an "effective" hp reading.

Is called an HP Calculator or something of that nature.
_______________________________________

Edited by user Tuesday, 24 June 2008 7:18:53 PM(UTC)  | Reason: Not specified

__________________________________________
Keep the shiny side up, and the greasy side down.
JBM Offline
#5 Posted : Tuesday, 24 June 2008 7:25:56 PM(UTC)
JBM

Rank: Member

Reputation:

Groups: Registered
Joined: 28/03/2006(UTC)
Posts: 810

Thanks: 1 times
Was thanked: 1 time(s) in 1 post(s)
Bob Kotmel who writes a drag orientated column for Street Machine refers to Moroso HP and ETs derived from engine size, tyres, diff etc.

Couldnt find any reference to it on the Moroso site.

James



----------------------------------------------

You only have to be in front at the end of the race.
Mr.Jones Offline
#6 Posted : Tuesday, 24 June 2008 8:42:35 PM(UTC)
Mr.Jones

Rank: Member

Reputation:

Groups: Registered
Joined: 17/08/2006(UTC)
Posts: 485

Thanks: 1 times
Was thanked: 1 time(s) in 1 post(s)
Doesnt Moroso HP comes from a chart dependent on ET or MPH. 'Generally' whatever you have at the engine in kW will convert to hp at the rear wheels ie efi 5.0L 165kW at the engine are usually around 120-130kW (160-170hp) at the wheels. Work on auto 30% ma

Edited by user Tuesday, 24 June 2008 8:51:22 PM(UTC)  | Reason: Not specified

"Planet earth is the asylum to which the rest of the universe sends it's lunatics"
Voltaire
Mr.Jones Offline
#7 Posted : Tuesday, 24 June 2008 8:42:35 PM(UTC)
Mr.Jones

Rank: Member

Reputation:

Groups: Registered
Joined: 17/08/2006(UTC)
Posts: 485

Thanks: 1 times
Was thanked: 1 time(s) in 1 post(s)
Doesnt Moroso HP comes from a chart dependent on ET or MPH. Generally whatever you have at the engine in kW will convert to hp at the rear wheels ie efi 5.0L 165kW at the engine are usually around 120-130kW (160-170hp) at the wheels. Work on auto 30% manu

Edited by user Tuesday, 24 June 2008 8:51:22 PM(UTC)  | Reason: Not specified

"Planet earth is the asylum to which the rest of the universe sends it's lunatics"
Voltaire
Guest
#8 Posted : Tuesday, 24 June 2008 8:55:07 PM(UTC)
Guest

Rank: Guest

Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977

Was thanked: 5 time(s) in 5 post(s)
Look for "Moroso power speed calculator"

Its just a slide rule that references weight in lbs versus horsepower and gives a theoretical best case et/mph, Then you use this mph to reference gearing/tyre size for your car with trap rpm.

Itll get you a
Guest
#9 Posted : Tuesday, 24 June 2008 9:00:13 PM(UTC)
Guest

Rank: Guest

Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977

Was thanked: 5 time(s) in 5 post(s)
Also, im yet to find any software that equates to all engine/driveline combos and power at each end.

The dyno is just another tool for measuring improvement, it wont account for all external variables so ignore it. Find a guy you trust to tune it and k
Guest
#10 Posted : Tuesday, 24 June 2008 9:00:13 PM(UTC)
Guest

Rank: Guest

Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977

Was thanked: 5 time(s) in 5 post(s)
Also, im yet to find any software that equates to all engine/driveline combo's and power at each end.

The dyno is just another tool for measuring improvement, it wont account for all external variables so ignore it. Find a guy you trust to tune it and
JBM Offline
#11 Posted : Tuesday, 24 June 2008 9:01:16 PM(UTC)
JBM

Rank: Member

Reputation:

Groups: Registered
Joined: 28/03/2006(UTC)
Posts: 810

Thanks: 1 times
Was thanked: 1 time(s) in 1 post(s)
This what it looks like:



from here:

http://www.moroso.com/ca...splay.asp?catcode=27042

James




You only h

You only have to be in front at the end of the race.
Users browsing this topic
Guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF | YAF © 2003-2025, Yet Another Forum.NET
This page was generated in 0.074 seconds.