Compound Cummins Spooling!
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- Опубликовано: 23 авг 2024
- Stock/S475 compound cummins spooling, lag, and egt's review.
Anything else you would like to see? Drop a comment and ill try and add it to another video soon!
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I enjoyed your video! Thanks for no crappy music!!!
I love that sound! My truck sounds the same way!, you can hear it in my videos
You need the part number for the leaky coolant hose? Cummins had a fix for it, just a little silicone piece hahaha
There isn't any lag...although if you lift off the throttle and then accelerate all the way down (same gear, no downshift) you still have to wait for the boost to build up in order to really accelerate. Am I saying anything wrong here?
What you just described is pretty much the definition of lag. Waiting on boost/ turbo to spool. There is always “lag” in any turbo charged engine. When people say “no lag” they are commonly referring to the vehicle spooling just like or close to how it did with the stock turbo.
@@krey8171 So a car with compund turbos can't react as a naturally aspirated engine...for example. I thought it would have absolute instant boost and instant acceleration...pretty much like an electric car.
I have got a bmw 335d and eventhough everybody is saying there is instant power and so on...i still have to wait for the turbos to spool up...for half a second or so...it isn't absloute instant full power.
Vlad ZSX what you’re talking about now, is boost threshold. It’s kinda like all squares are rectangles but all rectangles aren’t squares. So, boost threshold is the minimum lb/min of exhaust gas flow needed to produce boost (minimum usable boost). Lag is basically the time needed to produce boost that you can feel. Like feeling the acceleration at 15 psi on a 160ci engine....I hope you understood what I’m trynna say xD
Hey man great video. Did you have an o'ringed or fire ringed head at this time?
Nice truck... I have an 08 6.7 looking to put twins on it... off subject but what's your overall height of tour truck can you fit in a 7 ft garage door?
What all you have for fueling injectors, cp3 etc.? In this video
that is damned impressive
Boost seems low for compounds.
martin1234512345 I never floored it in this video. Only got it to waste gate pressure on the stock charge which is roughly 30psi. WOT I’d see 60-62psi
@@krey8171 why make a video if you're not going to go full send? :D
I have 244,000 on my hub bearings but have been thru 2 sets of free not axle is joints(ok the first set was from pulling ng out a tree). I am dying for compounds. I upgraded my 351 with a 63.5 compressor and 76 exhaust with a 11cm turbine. It's good with throttle but low rpm cruising acceleration sux. In your opinion would a 475 or smaller would help my beasty
A 475 for a compound setup or for a single? 6.7 or 5.9? The 63.5 turbo should spool just fine. A 475 single will be hard to spool, and as a compound it will spool the same as now but have more top end performance.
Looking at putting compounds on my cummins. How much louder would you say it is than just the single turbo while towing?
It's noticeable but not crazy, I wouldn't change it with how much benefit it gives.
Get a proper dyno tune and leave it alone, decent MPG's and lower EGT's are possible.
What trans do you have and have you had any problems?
That coolant hose that is leaking. Is it the little one that goes to the heater core near the firewall turbo side?
Yeah
Did u end up replacing it yet???
Yeah, my buddy that rebuilt my engine replaced it when it was out of the truck.
Did you ever upgrade your valve springs or pushrods.
I did. I used Hamilton 103# springs and Hamilton extreme duty pushrods.
@@krey8171 is it needed for compounds on stock fuel
I had my compounds on stock fuel initially and it would make 53psi max. It’s a risk you play with if you don’t. Some get away without doing it, and others don’t. You run the risk of floating a valve or bending a pushrod...then you’re doing an engine rebuild. I’d rather spend the money up front to prevent those things than 2-3x that amount fixing broken parts.
@@krey8171 did you buy titanium retainers
No, I have stock retainers
Who'd you get your compund kit from?
Industrial injection
Hey Man. Awesome truck. Mind making a mod list of what you've done fuel and air wise? I want almost the exact same setup. Sick of a big single.
That setup had a FASS 150, Fleece Power Flo 750 and Exergy 60% injectors. S475 over stock compounds. I actually have a big single now. Makes more power than the twins I had for less money and it’s easier on the bottom end because it doesn’t make boost down low.
@@krey8171 hows the egt with the big single?
Not too bad honestly. As long as you don’t Tow heavy it’ll be fine.
KReyCummins what single you go with?
Question do you have your cat and or muffler still with the compounds.
It’s deleted I’d bet
more than likely deleted probably deleted before the compounds
What is the A.R. of the turbine housing?
It’s a 1.0 housing
This is the AR on your s475 from your old compound system?
Oh I’m not sure what that was. It was the compound kit from industrial injection. I’m sure there website says what it is.
thankjesus for trucks ahahha