2017 BS and Chat Thread!

[DMan1198]

So after looking at the thread for Ryan Millikan's new drag car on compd, and their delving into pipe diameter for optimum flow from a given compressor I spent some time working on the equation, and figuring how big of piping my truck actually needs.; Apparently the optimum velocity of air in a system is .4 Mach, or 440ft/sec (higher and the air itself becomes a restriction, lower and it just isn't optimal), and for every 90* bend there's a 1% flow loss (that includes multiple smaller bends that add up to 90*).; Anywho it looks like for my moderate compound setup ~3.2" I.d. Would be ideal for my 98lb/min primary.

[BC847]

I saw some reference to some new way of looking at such. I wonder if said math is considering a naturally aspirated engine.

[DodgeFreak]

went to the doc today (wife made me) for a horrible cough that I've had for over a week, and I found out I have bronchitis. I am on an antibiotic and a steroid.

[dazedandconfused]

went to the doc today (wife made me) for a horrible cough that I've had for over a week, and I found out I have bronchitis. I am on an antibiotic and a steroid.

I've got a horrible cough right now myself. The weather going from 30's to 60's every couple of days is killing me

[ellis93]

went to the doc today (wife made me) for a horrible cough that I've had for over a week, and I found out I have bronchitis. I am on an antibiotic and a steroid.

I've got a horrible cough right now myself. The weather going from 30's to 60's every couple of days is killing me

Don't come to Mississippi then.....you'd shrivel up and die. It's been above 70 here for the last week. I'm luck to be healthy.

[DMan1198]

I saw some reference to some new way of looking at such. I wonder if said math is considering a naturally aspirated engine.

We were figuring it was for an unrestricted forced induction engine, as part of the equation I found was calculating for a 400hp turbo car.

Further research has yielded a member on cf (the thread is called ic piping, if anyone wanted to look at it) finding a calculation to determine volumetric efficiency of a fi engine, and some other fun stuff.

[DMan1198]

With my drive pressure now readable I got a wot run in after building some of a new rear bumper. 50psi overall, 30psi primary, 72psi drive pressure. Looks like I'll be loosening my gate some to try, and bring that dp down some.

[BC847]

I like to think the pipes on the trips is adequate being that coming off the covers. >Fingers Crossed<




Y'all keep your coughs to yourselves, please.

[DodgeFreak]

went to the doc today (wife made me) for a horrible cough that I've had for over a week, and I found out I have bronchitis. I am on an antibiotic and a steroid.

I've got a horrible cough right now myself. The weather going from 30's to 60's every couple of days is killing me

Don't come to Mississippi then.....you'd shrivel up and die. It's been above 70 here for the last week. I'm luck to be healthy.

70s isn't the problem its when it goes from 15-60 and back down to 15 in a week and a half is what gets me. Short sleeves and a jacket one day to coveralls and coat the next.

[DMan1198]

I like to think the pipes on the trips is adequate being that coming off the covers. >Fingers Crossed<




Y'all keep your coughs to yourselves, please.

I mean 3" would be better, but I'm sure you'll be fine. The bit of 4" you have as it goes into the secondary is enough for the 150lb/min of both primaries though (4" is just a little inadequate for 170lb/min).

[skilletky]

With my drive pressure now readable I got a wot run in after building some of a new rear bumper. 50psi overall, 30psi primary, 72psi drive pressure. Looks like I'll be loosening my gate some to try, and bring that dp down some.

I was gonna get a fancy new exhaust manifold for my truck, but then I got around to hooking up a drive pressure gauge. I was suprised to find that all I had to do was loosen up the spring gate just a tad on the manifold turbo to get things to around 1:1. The most boost its seen so far is about 80 psi. 35 psi from the lp and dp was about 80-85.

[1STGENFARMBOY]

Bill, sounds like your cabin is close to Lake George, My wife and I spent a week along 550 last spring, in the Silverton, Teluride, Ridgway, area....as a matter of fact we will be back out to Ridgway this September to meet up with our friends who are full time camping, It sure is beautiful out that way, will you PM me the info on your cabin, sometime we just mite see the need to try to rent it from you guys.

[DMan1198]

With my drive pressure now readable I got a wot run in after building some of a new rear bumper. 50psi overall, 30psi primary, 72psi drive pressure. Looks like I'll be loosening my gate some to try, and bring that dp down some.

I was gonna get a fancy new exhaust manifold for my truck, but then I got around to hooking up a drive pressure gauge. I was suprised to find that all I had to do was loosen up the spring gate just a tad on the manifold turbo to get things to around 1:1. The most boost its seen so far is about 80 psi. 35 psi from the lp and dp was about 80-85.

Yeah, that's what I'm working on now. I backed my spring gate off a turn, and dropped 4psi of drive pressure, and boost didn't change at all.

[Farmboy]

This popped up on my suggested videos to watch on youtube.... Pretty darn neat!

https://www.youtube.com/watch?v=C3bBiqIWffY

[PToombs]

I like how the back of the Charger is all black with soot!
"Letting the 12 valve roll coal like no other!"