to run or not to run? Boss turbo

GC89

GC89

1J-THIS
Jun 13, 2007
938
3
18
38
Spokane, WA
I am trying to get my car ready for the centrailia meet in a little over a month but I only get to work on my car every other weekend. I am putting the spair motor I have in for the next few months while I do a full rebuild on mine. The spair motor has 17k on it all original miles, and a boss series turbocharger. The prev owner sold the fuel rail and injectors before I bought the motor. I put the fuel rail from my motor on with a set of freshly cleaned and flow tested 440s for the time being. I am debating on what to do about the turbo, The oil and water lines are tappped and have stainless lines so its easier to just leave it on there. If I adjust the wastegate plunger arm out all the way will I be able to keep it under fuel cut? I have a wideband so I can monitor things and if it wasnt for the time issue I would try in and just slowly work up to boosting hard. My worry is if it ends up being fuel cut all over the place I dont think I will have time to put the ct back on before centrailia. Any experience or oppinions are appreciated
 
GC89

GC89

1J-THIS
Jun 13, 2007
938
3
18
38
Spokane, WA
That was I was kinda figuring, Me and my brother have been saving the turbo for when we build a motor for it. Since I will only be running this motor in my car for 2-3 months, and dont have the time to get a set of 550s and a lex afm, I thought I might be able to turn the boost down enough for. I just need the car to make it to centrailia and be drivable until Im ready to swap again. I have some experience with the turbo as I put in quite a few hours putting the car it was originally on together, but never at low boost levels. We had 550s, lex afm, safc II and were always working in the 18-22 psi range.
 
GC89

GC89

1J-THIS
Jun 13, 2007
938
3
18
38
Spokane, WA
wow well, I figured Id be able to turn it down to at least 8-10 but I know that even at that the boss compressor housing flows so much mor air it would be fuel cut all day long. I knew it was unlikely but I figured Id ask since I have no experience with this turbo at low boost levels. I guess Ill get to swaping when I get a chance. Thanks for the help GrimJack
 
GC89

GC89

1J-THIS
Jun 13, 2007
938
3
18
38
Spokane, WA
sure did, Iv known dave for a long time. I actually have pretty much all of the performance parts and then some off of the car the motor was in.
 
mikeymkll7mgte

mikeymkll7mgte

Supraholic
Oct 11, 2007
52
0
0
Spokane
thats awesome. i bought the motor that was in the blue supra he had. i was REALLY thinking about buyin that motor and turbo. put down almost 400 to the wheels, through the auto i now have in my mk2. that turbo was nice!! so he sold the rail and injectors huh? i thought he sold it all as one piece. its sad...... that supra is sittin in pull and save...... squished. it was stripped in a couple days.
 
GC89

GC89

1J-THIS
Jun 13, 2007
938
3
18
38
Spokane, WA
It made more than 400 by the time it was done:icon_bigg Ya it was sad, I got a few parts off the car. The worst part is they crushed it when it still had brand new interior pannelling all the way around. Most of the other good parts are on my brothers car, down pipe, exhaust, ic pipes, bov.
 
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Dan_Gyoba

Turbo Swapper
Aug 9, 2007
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Alberta
www.gyoba.com
Sure you can.

An air compressor, electronic valve, and a pressure sensor.

Connect pressure sensor to wastegate port, set it to trigger your electronic valve at desired threshhold.

Connect air compressor at enough pressure to open wastegate to wastegate through valve.

Not that I'd ever seriously expect this to be implemented, as it's more complicated than just making the engine accept the greater flow rate, but it can be done. :p
 
suprafanatic

suprafanatic

New Member
May 25, 2007
1,607
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Greenwood, IN
just dont boost it hard. drive it easy for a while. you can just hold a steady boost under fuel cut if you dont floor it. just an idea :p i know we all like to be able to get on it when wanted..lol
 
MDCmotorsports

MDCmotorsports

Offical SM Expert: Turbochargers
SM Expert
Mar 31, 2005
4,194
2
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Indy 500
www.MDCmotorsports.com
Dan_Gyoba;968372 said:
Sure you can.

An air compressor, electronic valve, and a pressure sensor.

Connect pressure sensor to wastegate port, set it to trigger your electronic valve at desired threshhold.

Connect air compressor at enough pressure to open wastegate to wastegate through valve.

Not that I'd ever seriously expect this to be implemented, as it's more complicated than just making the engine accept the greater flow rate, but it can be done. :p
Click to expand...


Oh shoosh. LOL! Awesome idea though.... ;-)
 
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Dan_Gyoba

Turbo Swapper
Aug 9, 2007
1,836
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Alberta
www.gyoba.com
Wow. And I thought that just qualified as one of those ideas that nobody would ever try, but would work, in theory. :)

Anyway, I still think that it'd be easier, and probably cheaper to just make the fuel system able to cope with the BOSS at 12psi.
 
GrimJack

GrimJack

Administrator
Dec 31, 1969
12,377
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Richmond, BC, Canada
idriders.com
Dan_Gyoba;968544 said:
Wow. And I thought that just qualified as one of those ideas that nobody would ever try, but would work, in theory. :)

Anyway, I still think that it'd be easier, and probably cheaper to just make the fuel system able to cope with the BOSS at 12psi.
Click to expand...
I agree 100%. I didn't actually build it for just that reason. :)
 
americanjebus

americanjebus

Mr. Evergreen
Mar 30, 2005
1,867
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wa.
Hey Ryan, if you dont already have one i can pick up my stock ct w/ fittings for you when i go home to get my car. 67k miles on it and you can use it until you finish your rebuild. If you dont already have one ready this way you dont have to deal with pulling the turbo off of something else.

If you ran that boss then you wouldnt be able to boost at all on the way to centralia and have to drive it granny style. Whats the point in that? :)
 
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