Jackass w/ LS9: original build and new Jackass 2.0 updates! - Lateral-g Forums

**Stielow** · #1 09-14-2015, 04:25 AM

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Originally Posted by hersheys69z

Hi Mark
I'm thinking of buying a new 2015 Z/28 and was just wondering if you guys have something better coming down the pipe next year that would make me regret it?

We always have something better......

Is the iphone 6 better that the iphone 5...? Depends on what you like or need.

The 2015 Z/28 is a very low production one off car. It is special. It is a pure drivers car. I feel the cars coming in the future will not be as true of a driver's car as the 14/15 Z/28. Will the future have faster cars...maybe. Will they be as raw and fun to drive as a Z/28. That is for the public to tell us. I can say the 2014/15 Z/28 is an iconic car and will have a place in the automotive history books.

On a side note with the goverment required fuel economy ratings coming these type of cars are going to be a lot more expensive in the future. We have to sell a lot of high fuel econmony cars to balance out the high performance cars.

Mark

**waynieZ** · #2 09-14-2015, 08:54 AM

I love to hear ( read ) the passion when you talk about these cars. That's why your builds are so amazing. Keep Chevy on the cutting edge!

LXSS350 · #3 09-14-2015, 10:31 AM

Mark I use the Walbro 460 E85 pumps with the Fore FC3 Triple Pump Staged Controller. Even though I am staging the pumps the biggest issue is the big amperage draw as pressure demand increases. On the Walbro's at say 6bar a pump is pulling 19amps or it pulls just over 15amps at 3bar.

Although my system runs well with the multiple Walbros I just came across the Asnu FP580X (E85) pump. By comparison it is only pulling 12.5amps at 6bar and 7.7amps at 3bar.

**CarlC** · #4 09-28-2015, 11:11 AM

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Originally Posted by LXSS350

Mark I use the Walbro 460 E85 pumps with the Fore FC3 Triple Pump Staged Controller. Even though I am staging the pumps the biggest issue is the big amperage draw as pressure demand increases. On the Walbro's at say 6bar a pump is pulling 19amps or it pulls just over 15amps at 3bar.

Although my system runs well with the multiple Walbros I just came across the Asnu FP580X (E85) pump. By comparison it is only pulling 12.5amps at 6bar and 7.7amps at 3bar.

Nice pump, but it may be difficult to find a replacement. The Walbro's are everywhere.

VaporWorx can PWM the Walbro 450's as well, dual and triple setups. That limits the power to the pumps to only what's needed, so if the engine does not need all that fuel, the controller will throttle the power to the pumps to only what's needed.

**Stielow** · #5 10-07-2015, 06:50 AM

We had a good test day at Waterford Raceway. It was a bit cold but we still got to run 3 15 minute sessions. We finally have enough fuel flow. Now we are refining the system.

The event Sunday was the Shelby Club. Great group to run with. The advance group is one of the best groups I have ever ran with. I would like to go to a few more of their events next year.

Now that I know it will stay together we are taking it to Gingerman this Sunday for the true test.

On our test at Waterford the car is working great. I know it was a cool day but on a 60 degree day the water was 180 F and the oil got up to 195 F after 15 minutes. All the systems on the car work great.

Off the data trace the car is cornering at 1.15 G and braking at 1.3 G so once I get the chassis dialed in we should be doing better.

Mark

**syborg tt** · #6 10-07-2015, 06:57 AM

Morning Mark,

This is more of a curiosity question. How long do your tires last when you are tracking them ?

**GregWeld** · #7 10-07-2015, 07:02 AM

It's so easy to improve stuff that Charlie has owned. LOL

Good to hear it's going the way you wanted it too.... but we know you'd get it handled!

**Stielow** · #8 10-07-2015, 07:16 AM

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Originally Posted by syborg tt

Morning Mark,

This is more of a curiosity question. How long do your tires last when you are tracking them ?

The new Rival S seem to be good for about ten 15 - 20 minutes test sessions with me driving. I would think I will get two events out of a set of tires now that I can run full 20 minute tests without temp issues. If you are not going 10/10th I would think a set of tires should last you 4 - 5 events depending on the HP and mass of your car. I have junked a set of tires in a day in the past though. I tested some Michelin Super Sports and tore chunks out of them.

On a side note the new Rival S tires are WAY better than the old ones. With the current tires wars going on I would plan on new tires every year anyway.

A 2014 Z2/8 can wear out a set of tires in 80 minutes of track time going flat out. (Two tank fulls of fuel) A new Z06 will wear out the tires in 30 minutes and they are the best on the first two laps. (One tank full of fuel).

If you want to play you are going to need to pay....

Mark

RussMurco · #9 10-07-2015, 09:02 AM

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