WasteGate or EBC?

Information on the naturally-aspirated KA24E and KA24DE engines.
yoyoS14
Posts: 23
Joined: Wed Nov 06, 2002 7:16 am

Post

What do you guys prefer wastegates or electronic boost Controllers? Which one is safer/more reliable? Share your experiences or opinions??


Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

You HAVE to have a wastegate, either internal or external. The EBC or MBC just adjusts the amount of air getting to the wastegate and changes when it opens. If you dont have a wastegate you will be in a whole world of hurt because an EBC or MBC ain't gonna do jack.

yoyoS14
Posts: 23
Joined: Wed Nov 06, 2002 7:16 am

Post

I thought that there were BC's that just bleed excess air into the atmosphere when you reach a certain boost level...

Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

No...your probably thinking of BOV's, I gotta run but if it isn't explained by when I get back I'll give a more in depth explanation :) Oh, and in case you havent been welcomed yet, welcome to NICO!

yoyoS14
Posts: 23
Joined: Wed Nov 06, 2002 7:16 am

Post

you probably have to run somewhere important cause you overlooked the fact I registered in Nov 2002but thanks anyway...So on EBC's one hose goes from intake to EBC and the other EBC to the actual wastegate??

:: orion ::
Posts: 1483
Joined: Fri May 23, 2003 4:40 pm
Car: '96 240SX, with KA-T @ 12psi...
Contact:

Post

Yes...

No matter what kind of boost controller you use, you will feed a boost/vacuum signal from the intake manifold into the boost controller, and then the outlet will go to the wastegate.

The EBC (or MBC) does nothing other than alter the signal to make the wastgate stay shut until the desired boost is reached...

Later - Brian

IvoryJ30t
Posts: 3076
Joined: Sun Aug 17, 2003 1:36 pm
Car: 95 Maxima GLE, 95 Maxima GXE

Post

yoyoS14 wrote:you probably have to run somewhere important cause you overlooked the fact I registered in Nov 2002


I love to Tulips in the spring time...they are my favorite.

Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

I'd rather have Sunflowers myself...

IvoryJ30t
Posts: 3076
Joined: Sun Aug 17, 2003 1:36 pm
Car: 95 Maxima GLE, 95 Maxima GXE

Post

I hate sunflowers...Tulips or daisy's bro.

Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

You've got to be kidding...Daisy's are gay.

User avatar
vuse1
Posts: 112
Joined: Mon Mar 17, 2003 10:36 am

Post

I'm a cactus lover myself, but flowers are sure pretty.

IvoryJ30t
Posts: 3076
Joined: Sun Aug 17, 2003 1:36 pm
Car: 95 Maxima GLE, 95 Maxima GXE

Post

I somtimes peel banana's for retarded monkeys...

User avatar
gtune4
Posts: 445
Joined: Mon Jul 28, 2003 4:45 am
Car: toonah
Contact:

Post

bovs , ebcs, abcs , efgs, xyzs....

User avatar
C-Kwik
Moderator
Posts: 8070
Joined: Thu Aug 01, 2002 9:28 pm
Car: 2013 Chevy Volt, 1991 Honda CRX DX

Post

Was this really necessary? If you guys read his post carefully, he said it because you were welcoming him to NICO despite the fact that he has been registered for about a year. Sounds like a misunderstanding on Nathan and Ivory's part to me. Yoyo wasn't being rude. Why is everyone here so quick to want to flame someone? There were 9 posts(10 including mine) that have nothing to do with the original question and all it does is bring down the list with flame wars and insults. Grow up. Were not in Grade school fellas.

yoyoS14
Posts: 23
Joined: Wed Nov 06, 2002 7:16 am

Post

Quote » Oh, I'm sorry, I mistook you for a new person that didn't know jack ****. Your answer is in my previous post as well as Orion's, I dont feel the need to elaborate any more.

Edit: Please excuse me for being nice, I wont make that mistake again with you. [/quote]

I appreciater your answer, I did not want to seem ungrateful, I'm sorry if I did..
vuse1 wrote:been registered for a year and only 14 posts... must be one of those ppl who just visits NICO, do you even own a nissan? jk..but seriously, dont be an ungreatful, Nathan was just trying to answer your question....


I guess I just dont have much to say, actually I ve had my 97 for 2 years and I almost never visited the KA-T section on NICO until I realized its easier than a swap..., and I wasn't being ungrateful, thats why I said Quote » But thanks anyway [/quote]

Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

C-Kwik wrote:Why is everyone here so quick to want to flame someone?


Because you SUCK!!! Now please, try to figure out when to die.(That's a joke btw ;)) Yoyo, I appologize for overreacting, C-Kwik is right, I misunderstood your post. That's the problem with the internet, it's easy to misinterpret what someone said so once again, sorry.

What I was going to say was that the wastegate acts as a vent of sorts for the turbo, it allows exhaust gasses to bypass the turbo, hence keeping the turbo from spooling up any more because there is an inadequate amount of exhaust gas for it to do so. Actually, if you have a wastegate that is too small then even when it opens fully the exhaust gasses cannot bypass the turbo enough and it continues to spool and hence, increase boost. This is frequently a problem with larger, internally gated turbos and is one of the reasons that externally wastegate setups are preferred. The wastegate is actuated by a vacuum line that takes it's signal from the intake manifold, basically when the turbo increases the pressure high enough in the intake manifold that same pressure makes it's way to the wastegate and in effect, pushes it open allowing the turbo to maintain a set level of boost. The level of boost is directly related to how stiff the spring in the wastegate is, a stiffer spring and it'll open later and allow the turbo to boost higher, a lighter spring and it'll open earlier stopping the turbo from boosting as high. What an electronic boost controller does is use a solenoid that basically actuates a valve in that vacuum line between the intake manifold and wastegate to limit the signal that the wastegate sees. An electronic boost controller can vary the amount that the valve allows through to adjust the boost on the fly and to adjust for boost spikes. A manual boost controller does the same thing, however it is not adjustable from in the ****pit because you manually have to tighten or loosen the valve, this is also why an MBC cannot react to boost spikes like an EBC can. Hopefully you can now see that because of how a boost controller works, it is not possible for it to vent any more exhaust gasses than the wastegate will allow. This also means that whatever spring is in your wastegate (for example, 7psi, 10psi, 15psi, etc.) you can never set the boost lower than that with an EBC because it cannot vent anything. The only thing capable of venting excess air in a turbo/intake system is the blow off valve, this is also actuated by a vacuum line off of the intake manifold. All a BOV does is open and allow compressed air to escape the intake system when the throttle butterfly is closed and a vacuum situation is encountered, such as when shifting or quickly closing the throttle at high rpms. This is done so that the turbo does not experience backpressure from the intake charge slamming up against the throttle butterfly with nowhere to go. Not only does it help keep the turbo spooled for the next gear (in a shifting situation) but it also prevents the turbo from being hurt by the sudden stoppage of airflow. I hope this explanation was thorough enough and not confusing, I'm pretty tired and probably not making much sense so if anything is confusing/wrong then you can call me on it :)

No hard feelings I hope!

User avatar
WDRacing
Moderator
Posts: 15983
Joined: Mon Nov 25, 2002 2:00 am
Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
Location: MFFO
Contact:

Post

There, I feel better now. Lets try not to be so quick to bash people on here fella's.

WD

Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

As usual, we have WD with the "creative" editing, thanks ;)

User avatar
aleph1
Posts: 907
Joined: Tue Jul 23, 2002 10:08 pm
Car: 1990 240SX hatch MODS: class.
Location: Fort Collins CO

Post

hahahahaha!.....HAHHAHA! thats the funniest **** ever.

I actually thought you guys said all that flower junk (didnt notice the edited by WD) and then I read C-kwicks post and was baffled, looked back, noticed the editing...HAHAHA! great WD, a masterpiece.

User avatar
WDRacing
Moderator
Posts: 15983
Joined: Mon Nov 25, 2002 2:00 am
Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
Location: MFFO
Contact:

Post

ThankYou...I find doing that is better then simply deleting.

User avatar
aleph1
Posts: 907
Joined: Tue Jul 23, 2002 10:08 pm
Car: 1990 240SX hatch MODS: class.
Location: Fort Collins CO

Post

...as you delete =P haha

IvoryJ30t
Posts: 3076
Joined: Sun Aug 17, 2003 1:36 pm
Car: 95 Maxima GLE, 95 Maxima GXE

Post

hehehe

User avatar
AZhitman
Administrator
Posts: 54538
Joined: Mon Apr 29, 2002 2:04 am
Car: 58 L210, 63 Bluebird RHD, 64 NL320, 65 SPL310, 66 411 RHD, 67 WRL411, 68 510 SR20, 75 280Z RB25, 77 620 SR20, 79 B310, 90 Z32, 91 GTi-R, 92 Silvia Qs, 98 S14, 23 Z.
Location: Surprise, Arizona
Contact:

Post

Well done, WD and Nathan.

The Master is pleased. :D

andrave
Posts: 3264
Joined: Mon Apr 07, 2003 10:00 am
Car: 1989 Nissan 240SX Coupe
Contact:

Post

tulips.

Nathan
Posts: 5629
Joined: Fri Mar 07, 2003 6:43 am

Post

Well I'm not pleased, he hasn't posted since then :( now I feel bad, I tried to e-mail him to invite him back but it's disabled for him.

deezlins
Posts: 216
Joined: Sun Oct 26, 2003 7:10 pm
Car: 95 240SX SE

Post

that flower thing was funny


Return to “KA24E / KA24DE Forum”