MONTE CARLO "COPO" Monte Carlo SS - Turbosaurus Build (Swinging Dick Racing's c*ck got bent... she bounced a little too high & hard, & came down awkwardly)
- Thread starter motorheadmike
- Start date
- Status
Are you worried about the deleterious effects of methanol going through the turbo and or the flammability aspect of this? Or are you shooting water as well?
No. That's a marginal risk. Turbochargers and superchargers have been drawing fuel through them since their inception. Water isn't a fuel so I won't be injecting it.
Pre-turbo Injection
I've been researching pre-turbo methanol injection for the past few hours and while I have a pretty good idea of what to do, I would like some confirmation before I go ahead. Background: VW 1.8T with K04-001 turbo that spikes to ~20 PSI. I currently have a DO3 nozzle injecting pre-TB with the...
www.alcohol-injection.com
Some decent information. 100% meth pre turbo does seem safest
I am flattered. But, I am just another caveman with little regard for his own safety.
Yup, many ways to skin a cat. The important thing is to tune to the fuel you are using: When it comes on, how much goes in, timing, and air mass/AFR.
If this was a Closed Loop system some of this would just be fire and forget.
Butt dyno says adding ~15% more fuel slows the car down. A lot. Rather than trying to bench test the flow rate of the assembly (and doing the math) I decided it would be easier, and more fun, to just take the car out and see how it responds. So now that I know how much its pumping in, I can pull the requisite amount of fuel out of the VE table. After that is done I can start cranking up the timing, boost, and leaning the car out a hair more.
Totally forgot to mention this yesterday.
One the problems with Open Loop fueling and supplemental fuel systems is if the supplemental system fails - it fails lean. In this case 15% lean. That's a lot of lean. Obviously if this were a Closed Loop system it would compensate automatically within design, mechanical, and programmed limitations.
To counteract this OL issue here the SCG-1 will cut boost to maintain a target AFR as a fail-safe. Not ideal but it was a consideration from the outset. It would be nice if it could trim itself... but that's what the Holley Terminator X is for.
One the problems with Open Loop fueling and supplemental fuel systems is if the supplemental system fails - it fails lean. In this case 15% lean. That's a lot of lean. Obviously if this were a Closed Loop system it would compensate automatically within design, mechanical, and programmed limitations.
To counteract this OL issue here the SCG-1 will cut boost to maintain a target AFR as a fail-safe. Not ideal but it was a consideration from the outset. It would be nice if it could trim itself... but that's what the Holley Terminator X is for.
- Status
