OK got it now. Not that I'll be going to a
much larger turbo any time soon. ;-)
Maybe after I do a rebuild.
Karl Wittnebel via Mercedes wrote:
No its not valve overlap. Its just keeping the AFR where it belongs. Egt
goes up as afr goes down, which is opposite of gas. To get enough air
No its not valve overlap. Its just keeping the AFR where it belongs. Egt
goes up as afr goes down, which is opposite of gas. To get enough air
molecules into the motor to burn more fuel, you need higher air density. So
you need higher pressure at similar temp, or lower temp at the same
pressure,
So increased overlap on the valves to blow
cooling air through? I guess I have to read
up on a lot of that stuff. It's been a long
time. I'm only running around 14 or so on a
stock 617 engine with 313,000 miles on it.
Thinking of possibly adding propane injection
but no good place to put a
Yes an egt probe is sort of a given with any added fuel. I may do a boost
controller to the alda pressure to regulate how and when it adds fuel.
With adequate intercooling, adding air (increasing AFR) cools the egt, so
maintaining 17:1 or higher is the goal to prevent excessive smoke. It would
Make sure you have EGT. 45psi is way up there
beyond piston melting range. might need
water/methanol injection also.
Karl Wittnebel via Mercedes wrote:
Sent it from the wrong account so it bounced.
Great feedback Mitch. It is really just a packaging issue and maximizing
frontal area on the
It's the 1399cc four cylinder variant of the GM Small Gas Engine, code LE2.
The biggest in that family is a 1.5L of about 1470cc, exact same engine with
slightly longer stroke.
The LE2 makes 153hp and 177ft-lb, I believe the 1.5 is about 167hp/188ft-lb.
A tuned LE2 can do around 215hp and
Sent it from the wrong account so it bounced.
Great feedback Mitch. It is really just a packaging issue and maximizing
> frontal area on the car. I cannot fit a decent air to air coooler up there
> due to the curve of the bumper fascia and the existing bumper.
>
> I will likely add another
Yah thats me on the vid.
That Tesla part was actually new. It is so thin it could easily be bent in
packing, but you wouldnt believe the box it came in. Very well packed. I
think it was the factory oem box. Anyway it is a constant radius. Doesnt
look like an accident. Almost imperceptible but
I just watched the video I downloaded this morning.
You made that, didn't you?
Is that from a wrecked car?
If so, it's possible a new one wouldn't be slightly bowed.
I never did the math, didn't realize something that size could have 2000 sq in
of fins.
Should be interesting to see your
I don't see how that tesla radiator is going to cool the intake air, unless
he's just going to mount it in front of the inter-cooler? Or perhaps duct
all the intake air through that radiator? Is he going to use engine coolant
through it, at 80°C ???
On Tue, Dec 25, 2018 at 6:56 PM Karl Wittnebel
Switching to air/water. Not stock. Maybe people have some input on heat
exchangers...
https://youtu.be/kjTc9UYTlFk
On Dec 25, 2018 4:24 PM, "G Mann via Mercedes"
wrote:
That would be the same military that dumped a few million gallons of Agent
Orange, and used to assign privates and corporals
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