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What mods should be done???

Discussion in '1st Gen. Tacomas (1995-2004)' started by closha63, Nov 28, 2008.

  1. Nov 28, 2008 at 9:25 PM
    #1
    closha63

    closha63 [OP] QuickShift

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    3'' Though Country Suspension lift, Grey Wire Mod, Cold Air Intake, Tundra TRD Exhaust Tail pipe ( all custom pipe) Sounds real mean!! Huculiner bed protectant, Rear diff. Breather Mod.
    Well i purchased my 04 tacoma the beginning of the summer. Since then i have done the gray wire mod and for some reason i took an exhaust from a 2007 tundra and made it fit my truck. Really i think that it sounds better then any FlowMaster and it looks so much better. Am working on the rear diff. mod but i can not find the fitting that screw down into the diff. If anyone has any idea on what size it is that would help. So any ideas on what i could do please advise.
     
  2. Nov 28, 2008 at 9:27 PM
    #2
    007Tacoma

    007Tacoma I dub thee malicious!

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    I would love to see some pics and maybe a sound clip of your exhaust! :thumbsup:
     
  3. Nov 28, 2008 at 9:53 PM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FWIW, a friend and I built an exhaust useing the muffler from a V8 Tundra to find out what kind of gians it would have as a favor for Ridgerunner. Turns out, it showed a pretty good gain! It gained over 10 h.p. The guy who supplied the truck was happy as a clam!
     
  4. Nov 29, 2008 at 6:13 AM
    #4
    STLharry

    STLharry Lube: It's the key to penetration.

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    wow really?
    thats sick. closha 63, do you have a 6 cyl? I'm assuming you do because you have a TRD. i have a flowmaster but i was thinking of changing it to something else
     
  5. Nov 29, 2008 at 8:05 AM
    #5
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
  6. Nov 29, 2008 at 8:15 PM
    #6
    closha63

    closha63 [OP] QuickShift

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    3'' Though Country Suspension lift, Grey Wire Mod, Cold Air Intake, Tundra TRD Exhaust Tail pipe ( all custom pipe) Sounds real mean!! Huculiner bed protectant, Rear diff. Breather Mod.
    Yeah it a V6. The thing with the exhaust is that instead of using the muffler with the tailpipe i found that the the post exhaust muffled the sound enough to give it the sound i was looking for without the rice burner sound. I found that the engine exhails a lot easier.
     
  7. Nov 29, 2008 at 8:26 PM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    The main thing with an exhaust, is to maintain the scavenging of the cylynders.
     
  8. Nov 29, 2008 at 8:52 PM
    #8
    closha63

    closha63 [OP] QuickShift

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    3'' Though Country Suspension lift, Grey Wire Mod, Cold Air Intake, Tundra TRD Exhaust Tail pipe ( all custom pipe) Sounds real mean!! Huculiner bed protectant, Rear diff. Breather Mod.
    Well the thing with Scavenging is that the exhaust will have little to do with it. Well its more for the emissions part of the vehicle and is greatly effected by a Super/Turbo charger. So manly you can run a straight pipe and it will have little negative effect of the engines performance. And lucky for me a don't have emissions inspections where i live and if i did i would do it myself.. But thats besides the point. So a Scavenging problem will be the least of everyones problem.
     
  9. Nov 29, 2008 at 8:56 PM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Not sure Im following you here. Your saying that exhaust scavenging is not important if you are turboed or supercharged, right? And it IS important if you are NA, right?
     
  10. Nov 29, 2008 at 8:59 PM
    #10
    closha63

    closha63 [OP] QuickShift

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    3'' Though Country Suspension lift, Grey Wire Mod, Cold Air Intake, Tundra TRD Exhaust Tail pipe ( all custom pipe) Sounds real mean!! Huculiner bed protectant, Rear diff. Breather Mod.
    I am not saying that its not important i am says that yes if not super/turbo it should be taken into consideration but if not super/turbo then nothing to worry about.. Gas prices are more to worry about then that.
     
  11. Nov 29, 2008 at 9:00 PM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Proof read your post. Your contradicting yourself here. :confused:
     
  12. Nov 29, 2008 at 9:10 PM
    #12
    closha63

    closha63 [OP] QuickShift

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    3'' Though Country Suspension lift, Grey Wire Mod, Cold Air Intake, Tundra TRD Exhaust Tail pipe ( all custom pipe) Sounds real mean!! Huculiner bed protectant, Rear diff. Breather Mod.
    Scavenging is the process of pull in unburned fuel vapor after the exhaust stroke by valve overlap on the intake stroke. So it kind of goes hand with the EGR valve but now a day that is controled by the ECU and if there is a problem then it will set the MIL on. So on a none NA engine scavenging really wont be a problem because the engine does not reach High RPM's fast enough. If it did there would probably be some floating valves witch is a bigger problem then you want. Now.... NA engine compress force and compress air at a higher rate then an NA engine does. So the fact of over lapping the exhaust valve is not needed do to the fact of the higher compression's. Im not sure if this helps any but it's pretty frickin close to what happens
     
  13. Nov 29, 2008 at 9:18 PM
    #13
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Scavenging is MOST important on a Normally Asperated engine. It has nothing to do with the EGR valve. This is from one of my posts:
    As the piston moves up to evacuate the chamber of exhaust, the valve opens and the exhaust leaves the cylynder in a "pulse". This pulse, since it has mass, is pulling behind it a low pressure zone. This pulse moves down the exhaust as another exhaust valve is opening. As the other valve is opening, the exhaust gasses in its cylynder are now "Sucked" out of the chamber by the low pressure zone behind the first pulse. This cycle repeats. To add, when the exhaust is pulled from the cylynder, a "vaccume" is now formed in it, alowing the Air/fuel charge to be "pulled" into the cylynder. and on and on. With VVT this is kept pretty constant thru the rpm range. ANy changes in the exhaust system have an affect. Some better, many worse.

    Now, when turbo/supercharged, scavenging does not play as important of a role, as the air is forced into the combustionchamber, and the exhaust is "pushed" out of it, so in that case, a larger, free flowing exhaust would be benaficial.
     
  14. Nov 29, 2008 at 9:21 PM
    #14
    closha63

    closha63 [OP] QuickShift

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    3'' Though Country Suspension lift, Grey Wire Mod, Cold Air Intake, Tundra TRD Exhaust Tail pipe ( all custom pipe) Sounds real mean!! Huculiner bed protectant, Rear diff. Breather Mod.
    hOW IS THIS KNOWN?
     
  15. Nov 29, 2008 at 9:39 PM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Its how an engine works.
     
  16. Nov 30, 2008 at 6:26 AM
    #16
    007Tacoma

    007Tacoma I dub thee malicious!

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    So... I'm confused. Does this mean that it is better for me to get a high-flow exhaust, or to keep my stock setup? I have heard people say that going to high-flow drops their MPG, but I don't know if that is because of the lead foot syndrome or it is the actual dynamics of the system...

    :confused:
     
  17. Nov 30, 2008 at 6:39 AM
    #17
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    It depends on the system. I havent had a chance to test all exhaust systems, but I have found that the Dynomax super turbo has given the highest h.p. gain so far. Im tired and on my first cup-O-coffee, but iirc, the Dynomax gave an 8 hp gain. Flowmast lost hp, magnaflow gave a few. The reason for the loss in mpg most of the time is due to less efficiency of the system. A high flow exhaust may give more hp on the top, but since the timeing of the exhaust is screwed up, a loss occurs at the bottom end, which is where most people are in when driveing. There is more to it than just scavenging as well. Size can play a role. If you go too large a diameter, the exhaust pulses loose velocity, and cool too fast, throwing the scavenging off. On new vehicles, there reall is more to it than just throwing an exhaust on and saying you got a bizzillion more hp. The phisics of an engins efficiency start at the intake, and work all the way to where the exhast exits. I tried to do a write up, but the post was too long, and the site wouldnt accept it. At which point I said "screw it". Maybe I will give it another go today and just make 2 entries.
     
  18. Nov 30, 2008 at 6:47 AM
    #18
    007Tacoma

    007Tacoma I dub thee malicious!

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    If you need any help with that, let me know. I am really interested in the write-up. The ones that I have done have been multiple posts. So, don't let that discourage you.
    :D
     
  19. Nov 30, 2008 at 6:49 AM
    #19
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    That would be great! Maybe I can PM the finished product to you, and you could edit?
     
  20. Nov 30, 2008 at 7:34 AM
    #20
    007Tacoma

    007Tacoma I dub thee malicious!

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    Will do. I need to go to the store, and wash my truck. After that I will take a look at it. Cheers!
     
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