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Top 2GNT Technical Turbo/Nitrous Tech topic #102845
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Subject: "boost controller / wastegate" Previous topic | Next topic
nicerydezFeb-16-08 11:03 AM
Member since Jan 18th 2008
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#102845, "boost controller / wastegate"




          

Hey, so i do appreciate all the post on here.. and also, seeing that i'm posting.. the reponses..

just curious, i have installed a turbo on my 95 talon, i'm running an external wastegate on it, and i was told that it was set to 7psi

now i haven't really had a chance to fully run my car *my other post*

but before i get this thing going.. if the wastegate is set to 7psi, does that mean that if there is a build up of 7 pounds in the exhaust section.. or does it read from the vaccuum line that runs to it that there is 7 psi in the intake?? and prevent overboosting? now i haven't done any internal work to the engine.. yet.. but i did upgrade the fuel.. and i dont want to over boost.. how much boost can stock internals handle?? i'm sure there is tons of posts.. i did the search.. i couldn't find anything similar..

so should i get a boost controller to prevent this?

sorry for the poor spelling and grammer, i'm at work and am typing all this real fast.. emoji

  

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Replies to this topic
RE: boost controller / wastegate, Moderatorcs82685, Feb-16-08 01:15 PM, #1
RE: boost controller / wastegate, nicerydez, Feb-18-08 02:23 AM, #2
      RE: boost controller / wastegate, 2GeclipseRS, Feb-18-08 03:34 AM, #3
           RE: boost controller / wastegate, RyaN95i4, Feb-18-08 03:46 AM, #4
                RE: boost controller / wastegate, nicerydez, Feb-19-08 03:41 AM, #5
                     RE: boost controller / wastegate, totaleclipse_05, Feb-19-08 04:48 AM, #6
                          RE: boost controller / wastegate, nicerydez, Feb-22-08 03:25 AM, #7

Moderatorcs82685Feb-16-08 01:15 PM
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#102846, "RE: boost controller / wastegate"
In response to Reply # 0




          

Originally posted by nicerydez
Hey, so i do appreciate all the post on here.. and also, seeing that i'm posting.. the reponses.. just curious, i have installed a turbo on my 95 talon, i'm running an external wastegate on it, and i was told that it was set to 7psi now i haven't really had a chance to fully run my car *my other post* but before i get this thing going.. if the wastegate is set to 7psi, does that mean that if there is a build up of 7 pounds in the exhaust section.. or does it read from the vaccuum line that runs to it that there is 7 psi in the intake?? and prevent overboosting? now i haven't done any internal work to the engine.. yet.. but i did upgrade the fuel.. and i dont want to over boost.. how much boost can stock internals handle?? i'm sure there is tons of posts.. i did the search.. i couldn't find anything similar.. so should i get a boost controller to prevent this? sorry for the poor spelling and grammer, i'm at work and am typing all this real fast.. emoji


If the wastegate is set to 7psi, that means that the wastegate stays closed until the 7psi is reached in the vaccuum source for the wastegate. Once that set psi is reached, the wastegate opens and allows exhaust gases to bypass the turbo preventing more boost from building

a boost controller doesn't control boost in the sense you're thinking. A boost controller can only raise your boost by preventing the wastegate from seeing boost until a certain pressure is reached in the boost controller.


I contributed to the Wiki!
EVO IX - just a really expensive boost gauge and a K&N air filter
96 Eclipse RS -awaiting registration and inspection
95 Eclipse GS - parts car
Mods/Profile - http://www.2gnt.com/index.php?d=cs82685

  

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nicerydezFeb-18-08 02:23 AM
Member since Jan 18th 2008
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#102850, "RE: boost controller / wastegate"
In response to Reply # 1




          

Sweet! thanks! good to know! so can these motors handle that with stock internals you think?? or should i take it easy till i change everything on the inside?

  

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2GeclipseRSFeb-18-08 03:34 AM
Member since May 06th 2007
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#102851, "RE: boost controller / wastegate"
In response to Reply # 2


          

8psi tops. 9-10psi with a good tune watching your afr and egt's.... If you like boosting all the time and are using a basic fuel delivery system, stick with 5-7psi. Our pistons give out from boost pretty quick, especially if you have a real high mileage engine. Do a compression test and all the usual stuff to make sure your motor can be boosted safely. Have you ever held a 420a piston and rod assembly in your hands? I feel like i'm going to break it just looking at it. Be careful and read up.

Have cash ready to rebuild your motor when it goes. Atleast $1200.


I like boost as much as the next guy. I dont like my daily driver on jackstands for weeks like the boost-happy next guy though....

It'll be a year since i've had my car this comming may and i still haven't turboed my car. Stuff keeps breaking and you have to fix that shit before you even think about going faster.

Good luck with your project and keep us updated.

Brandon

Goodnight sweetheart...yes its time to go...bum bum bum bum bum...good night sweetheart yes I am one little a$$hole......bum bum bum bum....

  

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RyaN95i4Feb-18-08 03:46 AM
Old School 2GNTer
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#102854, "RE: boost controller / wastegate"
In response to Reply # 3




          

Ran 13-16psi for 2 years on a stock motor with a 16g.

Never easy on the car and at the time the car was also daily driven. Not saying anyone and everyone should be running 1 bar of boost on their stock motor, but a good condition motor with a decent tune will take it willing. Any type of detonation at that boost level will crack a ringland however.

I cracked a ringland on piston #3. Was believed to be due to heat fatigue however (likely from abusing the car at high boost for so long), not detonation. That was a long, long time ago.

95 Avenger
ATX->MTX Swap
Holset HX40 @ 26 psi

  

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nicerydezFeb-19-08 03:41 AM
Member since Jan 18th 2008
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#102863, "RE: boost controller / wastegate"
In response to Reply # 4




          

Oh okay.. thanks, yeah i have a higher milage motor.. and well i am already looking at the junk yeards for a neon block.. and i'm going to start the rebuild.. i think i'll play it safe.. i'll stick to 5 pounds.. and then change it up after i swap motors..

cuz yeah, i dont like to be out of my car for very long..

it's just tricky to run 5, because i dont know for you guys or not, my lag when i start is hardly there if any at all, and the boost just climbs really fast!! i want more emoji but again.. i dont like the whole two feet and a heart beat thing.. emoji


it's unreal though, k so off topic.. but i put a BOV from a volvo (laugh if ya want) lol but man... by far it sounds the sweetest ever.. if i go to the junk yard again to search for a block.. i'm going to grab as many as i can.. emoji

so if anyone is interested, based on if there are anymore there, you guys pay for (actual) shipping.. and i'll give them to ya.. they cost me like 2 bucks or something.. (but once i have some.. i'll post it on the buy/sell forum)

  

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totaleclipse_05Feb-19-08 04:48 AM
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#102868, "RE: boost controller / wastegate"
In response to Reply # 5


          

Originally posted by nicerydez
Oh okay.. thanks, yeah i have a higher milage motor.. and well i am already looking at the junk yeards for a neon block.. and i'm going to start the rebuild.. i think i'll play it safe.. i'll stick to 5 pounds.. and then change it up after i swap motors.. cuz yeah, i dont like to be out of my car for very long.. it's just tricky to run 5, because i dont know for you guys or not, my lag when i start is hardly there if any at all, and the boost just climbs really fast!! i want more emoji but again.. i dont like the whole two feet and a heart beat thing.. emoji it's unreal though, k so off topic.. but i put a BOV from a volvo (laugh if ya want) lol but man... by far it sounds the sweetest ever.. if i go to the junk yard again to search for a block.. i'm going to grab as many as i can.. emoji so if anyone is interested, based on if there are anymore there, you guys pay for (actual) shipping.. and i'll give them to ya.. they cost me like 2 bucks or something.. (but once i have some.. i'll post it on the buy/sell forum)


I'll stick with my GReddy Type-S.

Mike D
-------------------------------------------------------------------------------------------------

Originally posted by DR1665
You're welcome to all the beer you can drink, but you have to go get it yourself. Don't get pissy when we point to the fridge and tell you to get it yourself.

  

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nicerydezFeb-22-08 03:25 AM
Member since Jan 18th 2008
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#102900, "RE: boost controller / wastegate"
In response to Reply # 6
Feb-22-08 06:31 AM by nicerydez



          

lol, yeah... it's not bad.. i like it... but i mean for what i paid.. i cant complain..

I mean, you know you dont REALLY.... want your nice shiney BOV... you want an older volvo one!! and i know, i know.. your feeling the urge to go rip your out to trade.. emojibut i cant.. i feel i'm going to get ripped off!! lol jk


but for a $4 BOV... i'm not complaining!! lol emoji

  

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