Bill's 308 driveby

Mar 3, 2008, 4:07 pm

#26

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Joined: Mar 10, 2007
Posts: 2,323

The early Corvettes had a problem just with normal exhaust smoke staining the bumpers so the exhaust tips had to be lengthened, so I would guess flames would be even worse

Error: divide by zero mpg

Mar 3, 2008, 7:39 pm

#27

Mighty Mouse

Joined: Jul 5, 2007
Posts: 1,477

Raza76 wrote

I'm serious. Do exhaust flames damage the back of the car any?

Bill's looked like a pretty quick pop, but my racebike would hold a steady flame sometimes when I got off the throttle...

Dan mentioned something about Diablo's cooking their bumpers from flames out the exhaust. I'd really hate to do the same, but I also really don't want Cat/Conv's either...

Jason, any issues after this weekend's Fire-breathing might asian pornstar mouse?

Mark, the only issue I have is that their fireballs and not continuous flames. I want my steak to be done when I get to the destination. No issues with the clam.

More power makes it fast on the straight, less weight makes it fast everywhere - Colin Chapman

Mar 3, 2008, 9:19 pm

#28

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Joined: Mar 11, 2007
Posts: 2,411

I attribute my flame pops to my suspected rich jets. The plugs suggest that and the pops confirm. With no cats, pretty open mufflers and short pipes as with most rear/ mid engine cars, that is unburned fuel making it to daylight. I'm a bit surprised to hear that some of your injected cars do it too, even with sophisticated engine management systems.
My tailpipes are long enough they are not at risk of scortching anything, just need to work on my tune some I think.

2006 Time Magazine's "Man Of The Year"

Mar 4, 2008, 3:48 am

#29

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Joined: Sep 30, 2007
Posts: 1,024

SMS wrote

I attribute my flame pops to my suspected rich jets. The plugs suggest that and the pops confirm. With no cats, pretty open mufflers and short pipes as with most rear/ mid engine cars, that is unburned fuel making it to daylight. I'm a bit surprised to hear that some of your injected cars do it too, even with sophisticated engine management systems.
My tailpipes are long enough they are not at risk of scortching anything, just need to work on my tune some I think.

Let's see... wicked sound followed by fire-pops... I'd say your tune is just about right!

Those that are lucky their whole lives usually die young...

Mar 4, 2008, 5:03 am

#30

Mighty Mouse

Joined: Jul 5, 2007
Posts: 1,477

SMS wrote

I attribute my flame pops to my suspected rich jets. The plugs suggest that and the pops confirm. With no cats, pretty open mufflers and short pipes as with most rear/ mid engine cars, that is unburned fuel making it to daylight. I'm a bit surprised to hear that some of your injected cars do it too, even with sophisticated engine management systems.
My tailpipes are long enough they are not at risk of scortching anything, just need to work on my tune some I think.

I'm using a solution for that thing called the ECU.

More power makes it fast on the straight, less weight makes it fast everywhere - Colin Chapman

Mar 4, 2008, 7:40 am

#31

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Posts: 2,411

rev440 wrote

A supercharged 308, very neat car. How much boost are you running?

6 psi boost and a 2 stage fuel system kicking on the big pump at 1 psi. Not sure yet how much boost I can get by tweaking the pop-off valve before I have to change pulleys, but so far the 6 seems ok. And my current 10 psi on the fuel delivery works out good, 4 psi putting around on the stock pump then 1 added lb of delivery pressure for each added lb of boost.

2006 Time Magazine's "Man Of The Year"

Mar 4, 2008, 7:45 am

#32

Mighty Mouse

Joined: Jul 5, 2007
Posts: 1,477

SMS wrote

6 psi boost and a 2 stage fuel system kicking on the big pump at 1 psi. Not sure yet how much boost I can get by tweaking the pop-off valve before I have to change pulleys, but so far the 6 seems ok. And my current 10 psi on the fuel delivery works out good, 4 psi putting around on the stock pump then 1 added lb of delivery pressure for each added lb of boost.

Bill, can't wait to see and hear her in person.

More power makes it fast on the straight, less weight makes it fast everywhere - Colin Chapman

Mar 4, 2008, 12:32 pm

#33

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Joined: Aug 5, 2007
Posts: 2,352

SMS wrote

6 psi boost and a 2 stage fuel system kicking on the big pump at 1 psi. Not sure yet how much boost I can get by tweaking the pop-off valve before I have to change pulleys, but so far the 6 seems ok. And my current 10 psi on the fuel delivery works out good, 4 psi putting around on the stock pump then 1 added lb of delivery pressure for each added lb of boost.

...and you are still running rich. What're the possible boost scenarios you're looking at? What's max you can eek out with stock situation without detonation rearing its ugly head?

1983 Datsun 280ZXTurbo

Mar 4, 2008, 1:22 pm

#34

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Don't know. This is a one off, not a kit, so a dyno with all the life support connections is needed to get to the edge. I have 8.3 JE forged pistons and Total Seal rings, so we have the right guts in place. A guy on FC (gasp!) Has a supercharged 308QV injected at 10 psi boost.

2006 Time Magazine's "Man Of The Year"

Mar 4, 2008, 3:49 pm

#35

Forum Fundraiser

Joined: May 1, 2007
Posts: 394

andrew wrote

Holy crap.. this car sounds awesome!

http://www.midwestscc.com/video.php?v=44

Reminds of the roar Godzilla makes when he is about to go fight Rodan.
Sounds like a monster there. I love it. When a video sounds that good on my laptop I know I must here it in person!

Mar 4, 2008, 4:57 pm

#36

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Joined: Sep 30, 2007
Posts: 1,024

SMS wrote

Don't know. This is a one off, not a kit, so a dyno with all the life support connections is needed to get to the edge. I have 8.3 JE forged pistons and Total Seal rings, so we have the right guts in place. A guy on FC (gasp!) Has a supercharged 308QV injected at 10 psi boost.

I can't wait to actually see this car in action. We were talking some time back about starting a cruise from a Car-shop with a Dyno.

Those that are lucky their whole lives usually die young...

Mar 5, 2008, 3:11 am

#37

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Joined: Aug 5, 2007
Posts: 2,352

SMS wrote

Don't know. This is a one off, not a kit, so a dyno with all the life support connections is needed to get to the edge. I have 8.3 JE forged pistons and Total Seal rings, so we have the right guts in place. A guy on FC (gasp!) Has a supercharged 308QV injected at 10 psi boost.

I think you're right on a wired tune for safety. How do you add an intercooler to a 308...where do you put the silly thing to reduce the air charge temp? Seems like anywhere in the rear isn't going to get good air flow/cooling.

I really need to learn more about superchargers. I keep trying to apply turbo tech to SC's and that just doesn't work well. And then you go and have a SC on a carb'd engine.

1983 Datsun 280ZXTurbo

Mar 12, 2008, 2:05 pm

#38

Mighty Mouse

Joined: Jul 5, 2007
Posts: 1,477

Raza76 wrote

I can't wait to actually see this car in action. We were talking some time back about starting a cruise from a Car-shop with a Dyno.

I can't wait to drive it with super extra caution.

More power makes it fast on the straight, less weight makes it fast everywhere - Colin Chapman

Mar 13, 2008, 10:02 pm

#39

Webby #2

Joined: Jul 27, 2007
Posts: 839

Raza76 wrote

Image scaled. Click here to view full size

whoa...

Bill, that is one kickass Ferrari. Can't wait to see it!

Mar 17, 2008, 5:56 am

#40

Official Carrera GT Slayer

Joined: Mar 22, 2007
Posts: 5,668

shit!!!.....

man I really need an exhaust now
the 308 is kicking my ass

the Sledgehammer

2001 Lamborghini Diablo 6.0 - Baby Huey!!! <3
2004 Porsche Carrera GT -Terrorizing society since Oct 16 '09 - DEAD
2001 Acura NSX -SOLD-