Panoply

i always see that 20 psi on a small turbo is not the same as 20 psi on a big turbo. for some reason this doesn't make since to me, psi is psi correct? what exactly is the difference, and why is 20 psi harder on a motor than 20 psi from a smaller turbo.

if you can provide a link that would be great, didn't find anything in the search.

dizzyek

psi is psi yes but pushing 20 psi into a bigger turbo will produce more power than pushing 20 psi into a smaller turbo

Now you should be able to figure out the answer to your second question if you can't your an idiot.

Garage 808 Hatch

its all volume. imagine 20 psi through a straw, not much air, now imagine 20 psi through a 3" pipe

Panoply

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dizzyek &raquo;</TD></TR><TR><TD CLASS="quote">psi is psi yes but pushing 20 psi into a bigger turbo will produce more power than pushing 20 psi into a smaller turbo

Now you should be able to figure out the answer to your second question if you can't your an idiot.</TD></TR></TABLE>

actually by the way you attempted to answer the question there would not be a way i could answer the second question. you gave no indication of what the power comes from other than a bigger turbo (but why does the power come from a bigger turbo?? thats the question), which is something i already knew.

nice attempt at making someone feel like an idiot.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Garage 808 Hatch &raquo;</TD></TR><TR><TD CLASS="quote">its all volume. imagine 20 psi through a straw, not much air, now imagine 20 psi through a 3" pipe</TD></TR></TABLE>

thank you that makes much more sense.

say the outlet of your compressor was 2.5" or maybe even 3", could i assume using smaller i.c. piping such as 2" would restrict and yield the same results as if the 3" outlet was only 2"? meaning less volume?

if i actually put the amount of psi in the ideal gas law, PV=nRT (would this law even apply here? im not even sure how i would calculate the number of moles), and made my Volume the unkown, then having all other variables i should be able to calculate what my volume is. if volume is what damages motors and not pressure then is there a certain volume you would not want to exceed?

if i am going in the wrong direction someone please correct me, im only trying to understand this.

Garage 808 Hatch

its based on the volume in cc's that an individual turbo can output, bigger wheel, means more flow.

Panoply

oh and i realize that the compressor outlet size does not determine the volume of air from the turbo. however, does the restriction of outlet size have any negative result?

Panoply

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Garage 808 Hatch &raquo;</TD></TR><TR><TD CLASS="quote">its based on the volume in cc's that an individual turbo can output, bigger wheel, means more flow.
</TD></TR></TABLE>

i see, so is there anyway of determining the amount of cc's that is too much for an engine? i know we usually rate by horsepower (such as "300 hp is about max on stock block") but i was wondering, if this volume could be calculated (max cc an engine could hold) could you therefore calculate how many psi it would take to get to that max psi or cc the engine could hold without knowing how much horsepower you are making?

DCxMagus

the truth is you never know what YOUR block can take.


http://www.turbobygarrett.com/....html
http://www.turbobygarrett.com/....html