V8 Picture
Lexus Champion
Joined: Nov 2001
Posts: 2,328
Likes: 2
From: PHX
Re: V8 Picture
Originally posted by vredniykot
are manifolds supposed to get that hot or is it just enhanced for more effect in the pic?
are manifolds supposed to get that hot or is it just enhanced for more effect in the pic?
I saw a video of a porche on a dyno... went from red like that, to birght red, to white... those things get hot... real fast
here's an M5 exhuast nice and toasty. Off www.m5board.com
Lexus Champion
Joined: Sep 2002
Posts: 2,984
Likes: 0
From: TheOC
Re: V8 Picture
Quote from Planetsoarer.com
From the classic LS400 ad from the early 1990's - emphasis on engineering and testing. You can see the standard headers glowing red hot. These are supposed to flow quite well and are hard to improve on. See other standard header photos down below.
From the classic LS400 ad from the early 1990's - emphasis on engineering and testing. You can see the standard headers glowing red hot. These are supposed to flow quite well and are hard to improve on. See other standard header photos down below.
Driver
Joined: May 2003
Posts: 124
Likes: 0
From: Georgia
Very cool picture. I've seen the turbo manifold on a dood's 7M glow red during dyno runs. Everytime it did it i felt a strong urge to poke it with a screwdriver or ink pen 
Back in my wild highschool days, I remember my friends and I lit a doobie off my friend's Nova's header at 6 in the morning. Goodtimes.
Back in my wild highschool days, I remember my friends and I lit a doobie off my friend's Nova's header at 6 in the morning. Goodtimes.
Lead Lap
Joined: Dec 2001
Posts: 622
Likes: 1
From: CA - San Deigo
Re: Re: V8 Picture
Originally posted by SupraCoup3
I saw a video of a porche on a dyno... went from red like that, to birght red, to white... those things get hot... real fast
here's an M5 exhuast nice and toasty. Off www.m5board.com
I saw a video of a porche on a dyno... went from red like that, to birght red, to white... those things get hot... real fast
here's an M5 exhuast nice and toasty. Off www.m5board.com
I have also seen that video or one like it ... a twin turbo porche on the dyno ... it was awesome
Trending Topics
Lexus Champion
Joined: Sep 2002
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From: TheOC
Last edited by siniquezu; Jul 29, 2004 at 01:51 PM.
Lexus Champion
Joined: Nov 2001
Posts: 2,328
Likes: 2
From: PHX
Originally posted by siniquezu
Here is my badass contribution for a cool wallpaper.
http://uploads.offtopic.com/files/46asdfg.jpg
Here is my badass contribution for a cool wallpaper.
http://uploads.offtopic.com/files/46asdfg.jpg
Last edited by SupraCoup3; Jul 29, 2004 at 07:27 PM.
Lexus Champion
Joined: Feb 2001
Posts: 3,124
Likes: 32
From: Texas
In reference to the 1UZFE picture in the first post...
I have posted that and referenced it for my agument that the 1st gen 1990-1994 1UZFE was OVERRATED from the factory. The picture does appear to be of dyno testing.
I base this on chassis dyno number consistently being in the 175-180hp range. That is a hard to believe 28-30% drivetrain loss. I suggest 230-235 flywheel horsepower is probably more accurate. That would make a more reasonable 24-25% drivetrain loss... still a bit high but understandable.
BTW, the 1995-1997 LS400s (1996-1997 SC400s) were up rated to 260hp and typically dyno around 190-200rwhp. That equates to a 23-27% loss range. Also, the 1995 LS400 was around 200 pounds lighter than the 1994 and was a full SECOND faster 0-60. 10hp is not enough to make that difference. 20-30hp is more like it. I suggest the 1990-1994 at 230hp and the 1995-1997 (96-97 for SC400s) at the actual 260hp.
The thing that really catches my eye about the picture is that the exhaus does NOT have catalysts or the rest of the restrictive system in place. It also has an unrestricted intake. This "dyno" engine probably made the 250hp that the engine is advertised with but with cats, exhaust and intake restrictions of the installed engine power drops a good 15-20hp.
I have posted that and referenced it for my agument that the 1st gen 1990-1994 1UZFE was OVERRATED from the factory. The picture does appear to be of dyno testing.
I base this on chassis dyno number consistently being in the 175-180hp range. That is a hard to believe 28-30% drivetrain loss. I suggest 230-235 flywheel horsepower is probably more accurate. That would make a more reasonable 24-25% drivetrain loss... still a bit high but understandable.
BTW, the 1995-1997 LS400s (1996-1997 SC400s) were up rated to 260hp and typically dyno around 190-200rwhp. That equates to a 23-27% loss range. Also, the 1995 LS400 was around 200 pounds lighter than the 1994 and was a full SECOND faster 0-60. 10hp is not enough to make that difference. 20-30hp is more like it. I suggest the 1990-1994 at 230hp and the 1995-1997 (96-97 for SC400s) at the actual 260hp.
The thing that really catches my eye about the picture is that the exhaus does NOT have catalysts or the rest of the restrictive system in place. It also has an unrestricted intake. This "dyno" engine probably made the 250hp that the engine is advertised with but with cats, exhaust and intake restrictions of the installed engine power drops a good 15-20hp.
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