06-03-2019, 04:36 PM | #43 | |
Drives: 2010 SS/RS M6 BIG cam Join Date: Mar 2016
Location: McDonald's DT
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I honestly don't know what the hell a yugo is , but I do own a 2015 Yamaha grizzly 700 sitting on 28" mud zillas that see's more time being a swamp submarine than you could ever imagine You ever been up to you neck in mustkeg trying to get through impassable trails.... did not think so. Come out for a day quading with my crew and you be crying for your mommy in the first hour
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BIG cam ...... 305 45 18 Mickys ...... BMR suspensions
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06-03-2019, 04:37 PM | #44 |
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Drives: 15 2lt RS Top Gun Camaro Join Date: Mar 2019
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Where I see improvement's is in the temp and isolation from the condenser and radiator. The intake is in a good spot bit not pulling good isolated cold air. The tubing is not insulated with the rad directly in front of it. Even a 10 degree difference in temp will add something. Also there is a pulse wave going back and forth in the intake, this reversion can be taken advantage of by tuning the length of the tube and adding louvers that limit back flow in the entire air-intake system. Even the Ram Air on my Ta's responded to much better throttle response by modifying the inlet lid. I'm sure you have seen lids they sell? Also if you ever take your throttle body off you will be shocked what is behind it. There is a small cone shaped opening that funnels the air into the intake. I'm sure its there to distribute the PCV gases-oil vapor evenly across all the cylinders but its a huge restriction. I notice when you buy a ported intake they remove this entire piece. I may not remove it but I will explore opening it up a bit and smoothing it. Sometimes its the little things that add up to more drivability and that means funner to drive<I no funner aint know werd.
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06-03-2019, 05:16 PM | #45 | |
Drives: Miss Con Ception Join Date: Aug 2016
Location: Chicagoland
Posts: 2,998
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If you monitor your IAT from the sensor you will see a rise when idling at a stop. It will quickly fall back to only a degree or two above ambient when moving. Some remark that the throttle doesn't open 100% when floored from a stop. This has been done for many years as a means to equalize the distribution and maintain velocity. And not only for the PCV. Some throttle plates open to direct air towards the front of the motor. With the computer control directing the throttle plate anything is possible, unlike the old days when vacuum was the primary source. Be careful removing what you think is a restriction. I've been there and having a bog as a result is not what you want. Sure they remove it on a ported throttle body, and maybe that's good at the top of the 1/4 mile, but it may not be something you want for everyday drivability. The engineers spend millions of dollars and thousands of computer hours modeling air flow, under all possible conditions from -40° to +140°, too dry, too wet, etc. I have to believe they know more than what looks good. I won't tell you not to experiment, but don't be surprised if your results aren't what you expected.
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2011 1SS/RS LS3 CGM
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06-03-2019, 06:09 PM | #46 |
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Fred don't worry I don't live near you and Top Gun won't be lookin fur ya..... lmao
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06-03-2019, 07:45 PM | #47 |
Drives: 2010 SS/RS M6 BIG cam Join Date: Mar 2016
Location: McDonald's DT
Posts: 857
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All bullshit aside the "v8 vs v6" stuff , Fred just gave you some incredibly good advice. Velocity is king when tweaking naturally aspirated motors. Hogging out the intake manifold and air box makes sense on forced induction motors. On a naturally aspirated motors it is not recommended unless you only want your car to live at 6000+ rpm. I get were you coming from with past experiences with opening up the lid on a ls1 f body but with the new achievements of computer designs use on cars them days are over and the gains for so called "free mods" are just not there any more. Cold air intake only nets 3hp+ and even the most precise manifold port will only net 9hp+ to 12hp+ at the top of the rev range
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BIG cam ...... 305 45 18 Mickys ...... BMR suspensions
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06-03-2019, 11:27 PM | #48 |
Envy
Drives: 2011 SGM 2SS/RS - Black hood/hockey Join Date: Aug 2011
Location: Renton, WA
Posts: 915
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06-03-2019, 11:48 PM | #49 |
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Drives: Camaro V6 Join Date: Oct 2016
Location: U.S.
Posts: 1,722
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06-04-2019, 12:33 AM | #50 | |
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Drives: Camaro V6 Join Date: Oct 2016
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Jason@JacFab did remove that small coned shaped opening you're talking about on his ported TB's and found it to be a restriction when testing before and after on a flow bench. He describes this in pretty good detail in his old posts in the V6 forum. It's interesting you mention the pulse wave that travels back and forth through the intake tract when the intake valve opens and closes. What you are referring to is what engineers call standing waves of the 1st, 2nd and 3rd Harmonic. The old GM tuned port injection (TPI) took advantage of this feature, particularly the 3rd Harmonic standing wave, to force feed air into the cylinders at a certain rpm range. Hence the name, tuned port injection. The problem was, the intake system was originally designed for the 305 SBC. When GM decided to keep the 350 around, they just used the same intake system on that engine as well. It boosted torque output just like on the 305, but the airflow requirements were not enough to feed the larger displacement engine so it ran out of breath pretty early in the rpm band (<4400 rpms). |
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06-04-2019, 01:18 AM | #51 |
Envy
Drives: 2011 SGM 2SS/RS - Black hood/hockey Join Date: Aug 2011
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Manual is always way more fun and more capable. There are things you can do with a manual that you can't do in an automatic. I don't care how fast an automatic can shift. I'll never own one if I can help it. If a car only comes in auto, that's 100% a dealbreaker for me. But then, most people aren't enthusiasts. :(
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06-04-2019, 01:34 AM | #52 | |
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06-04-2019, 05:16 AM | #53 | |
Drives: 2011 Camaro 2LT/RS Join Date: May 2015
Location: Farmville, Virginia
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06-04-2019, 05:46 AM | #54 | |
Drives: 2010 Camaro 2SS Victory Red 6M Join Date: Apr 2015
Location: Gulf Coast, TX
Posts: 1,424
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2011 2SS 6A Red Jewel Metallic, Vararam Tune CAI, Magnaflow 3" Competition c/b, Speed Engineering 1-7/8 LT's, Circle D 5C, M/T 275/40R20 S/S, HPTuners tune by Ryan@GPI
12.3 @ 112 ACM as of 12/22/19 Gone on 12/28/19 R I P 2010 2SS 6M Victory Red/Black (old ride) CAI intake, Speed Engineering 1 7/8" LT's, X4 base tune, Flowmaster Outlaw axle-back. 12.6 @ 115 SAR as of 9/19/15 Gone but never forgotten. |
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06-04-2019, 08:03 AM | #55 | |
Fast Cars and Old Guitars
Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012
Location: N. CA
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I'll keep quoting this old thread til the cows come home or someone disproves it. The GM CAI dyno'd a 16HP increase. Look it up.
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“I don’t want to belong to any club that would have me as a member.” - Groucho Marx
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06-04-2019, 08:33 AM | #56 |
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I've been involved in many design developments, 1st thing you learn is there is no such thing it can't be improved. Its how far do you want to take it. Its like MATURITY, you can act like a 12 year old till you're 75 or YOU CAN GROW THE EFF UP!
Good Lord you guys |
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