A
Anonymous
Guest
hehe.... gotta love addo. Getting a bit touchy at your old ages i see (haha i can still say that for now) j/p lol.
Linc's 200":apji1t5u said:ski4evr":apji1t5u said:
Scott, I think you meant to say: "He would write in the same manner...."
Thanks Linc's 200. I'm writing about writing and I use the wrong form of the word. Duh.
(I read this post three times before "submitting")Scott
A
Anonymous
Guest
Thanks Does10s.
Bob
Bob
kirkallen143
Famous Member
Since we are on the subject of turbos, what form of boost control do y'all use? Whats a T3's psi run usually, about 6 to 8 psi. A while back i remember someone making one out of a relief valve (?), adding a spring and ball bearing, from one of the local home depots. Believe me it has been a while, so I could be, and usually are from my wife's standards, wrong.
Kirk
Kirk
kirkallen143
Famous Member
Check this out:
http://www.xmission.com/~dempsey/perform/grainger.htm
Now that is what I am talking about...$ wise. What do y'all think? One more question, my T3 does not seem to have a restrictor in the hose to the wastegate, that I know of. So still vent the one side to the atmosphere w/out a restrictor or some sort of one-way vent? Or what it looks like, in my case, no vent at all in the hose to wastegate.
Kirk[/url]
http://www.xmission.com/~dempsey/perform/grainger.htm
Now that is what I am talking about...$ wise. What do y'all think? One more question, my T3 does not seem to have a restrictor in the hose to the wastegate, that I know of. So still vent the one side to the atmosphere w/out a restrictor or some sort of one-way vent? Or what it looks like, in my case, no vent at all in the hose to wastegate.
Kirk[/url]
A
Anonymous
Guest
A T-3 with built in wastegate is usually set to around 6-8 psi, that is correct.
Most T-3's can have the boost pressure raised a little by messing with the length of the actuator rod.
You can see my homemade manual boost controller on my turbo 200 thread. If you do something like that , you have to install it inline between the wastegate diaphragm and the pressure fitting.
Most T-3's can have the boost pressure raised a little by messing with the length of the actuator rod.
You can see my homemade manual boost controller on my turbo 200 thread. If you do something like that , you have to install it inline between the wastegate diaphragm and the pressure fitting.
A
Anonymous
Guest
Hey guys.
first off thanks for totally molesting my posts ( j/k ) but anyways yah i really like all the info ya'll are giving me so i guess i'll ask some more questions? ok for the turbo i need a timer right! so thats if i'm not mistaken ( some guy told me i didn't need one though?!? ) so if it's needed what do you suggest?? well please let me know!! and thanX! for all the info even tho mst of it was bashing!!
~peace~
Jon D.
first off thanks for totally molesting my posts ( j/k ) but anyways yah i really like all the info ya'll are giving me so i guess i'll ask some more questions? ok for the turbo i need a timer right! so thats if i'm not mistaken ( some guy told me i didn't need one though?!? ) so if it's needed what do you suggest?? well please let me know!! and thanX! for all the info even tho mst of it was bashing!!
~peace~
Jon D.
Jon,
A timer? No you definately don't need that!
If you're looking for a boost controller then there are a couple of different types out there. The simpliest (and cheapest) is a bleed off valve. All it is used for is to bleed off some of the boost pressure that the wastegate sees. The wastegate will open later thereby increasing the speed of the turbine which increases the pressure to the motor. Do a Google search for "boost controller" and you'll get a better idea of the ones that are out there.
The more expensive type is the electronic version. I personally don't know much about them because they are outlawed by most racing organizations. So they must be good! But I believe they work with a solenoid that's normally closed. Boost increases to a programmed point, solenoid opens, W/G opens, blah, blah blah.
Later,
Will
A timer? No you definately don't need that!
If you're looking for a boost controller then there are a couple of different types out there. The simpliest (and cheapest) is a bleed off valve. All it is used for is to bleed off some of the boost pressure that the wastegate sees. The wastegate will open later thereby increasing the speed of the turbine which increases the pressure to the motor. Do a Google search for "boost controller" and you'll get a better idea of the ones that are out there.
The more expensive type is the electronic version. I personally don't know much about them because they are outlawed by most racing organizations. So they must be good!
But I believe they work with a solenoid that's normally closed. Boost increases to a programmed point, solenoid opens, W/G opens, blah, blah blah. Later,
Will
A
Anonymous
Guest
ok thanks Will i'll check it out!! coolness!!
~peace~
Jon D.
~peace~
Jon D.
kirkallen143
Famous Member
Jon,
Did some calculating for ya:
170*.75*5000/3456=184 cfm*0.069=12.7 lbs/min (how much your engine can ingest at 5000rpm w/ a VolumetricEfficiency of 75%)
Running 8 psi (@ highest you can run w/out an intercooler)
(14.7+8)/14.7=1.54 pressure ratio
And by the looks of it, a Garrett T3 50 trim would fit you just fine, even if you increase boost up to 15 psi and still stay in the 75% range of the compressor map.
Now that one was a freebie, I had to learn how to do it by myself, like you should if you want to understand the turbo basics. Lots of math, but not too bad. Good luck.
Kirk
Did some calculating for ya:
170*.75*5000/3456=184 cfm*0.069=12.7 lbs/min (how much your engine can ingest at 5000rpm w/ a VolumetricEfficiency of 75%)
Running 8 psi (@ highest you can run w/out an intercooler)
(14.7+8)/14.7=1.54 pressure ratio
And by the looks of it, a Garrett T3 50 trim would fit you just fine, even if you increase boost up to 15 psi and still stay in the 75% range of the compressor map.
Now that one was a freebie, I had to learn how to do it by myself, like you should if you want to understand the turbo basics. Lots of math, but not too bad. Good luck.
Kirk
gravelrash
Well-known member
mid69camaro,
i am actually putting my 250 2v turbo back together at the moment, i`ll take some pics for you if it will help
i am actually putting my 250 2v turbo back together at the moment, i`ll take some pics for you if it will help
A
Anonymous
Guest
Turbo timers are used as safety precaustions mostly ofr htat "added security".....if you are running long periods of high heat (1200, 1300 degree, which is pushing it) then it would be worth the investment, but anyone running things like that knows better than to shut down a perfectly smokin hot turbo.
A
Anonymous
Guest
hey thanks for all the help!! and thanks for the freebie!!
Jon D.
Jon D.
Similar threads
