Turbo on a 2.5

[BUKI]

Bnine to answer the question obout turbo lag.  my friend the cnc machinist and i are going to port & match the intake and exhaust ports as well as polish the exhaust for way more reliability and cut down on the chances of detonation.  This should also add more power.  as for money we have done the math and a good turbo 200-500  dolars intercooler 300 (core from mack truck and new tanks welded on, cut down to size that fits).  Machining free, manifold (he wants to teach me how to use the cnc, so just the blank metal.  welding(now thats an art) I dont weld well so ill have to pay to get that done.  really the only thing we would have trouble with would be fuel management, its THE HARDEST PART.  The intercooler I would either top mount with brakets paralel to the hood and add a hood scoop (functional no laughing please)  and for those times when you are crawling I would add a small pull elec fan, ie. from a firefly.  And with the intercooler on the top the boost pipes would be very easy to route, keeping everything nice and close.  Also on the LAG portion you can get hybrid turbos ie t3/t4 or I believe t3/t66 is another one these are very tiny exhaust prop with larger comp end.  this = extreame quick spools and tons of volume.  only prob with more vol. larger chance of boost creep.  Your right though supercharger probably better for low speed crawling.  but Those kits are like 5g notes arent they.  I plan on spending way less than one thou.  yes this will probably be a on off, for now untill all bugs are addressed.  Then I will talk to my friend Leen and well keep the kits cheap.  But lets face it anything is better than the stock 123 hp.

[Bnine]

Cool, look forward to seeing what you come up with.

[BUKI]

Oh and yjcanible, all boost equals more torque.  Stock 2.5l= 139 lbs/ft  with a turbo at approx.  7psi boost you get roughly a 50% increase in peak torque.  Roughly 70 lbs/ft more so 210 total (again very rough estimates could be more could be less).  the only diffeerence is the exhaust needs to be pushed through the turbo to get it going, hence lag.  at WOT with a good matched turbo could be fractions of a second.  this results in higher torque out put but also at a higher engine speed ie 210 lbs/ft at 4200 rpm vs 139 at 3200 rpm.
Boost is definetly different and takes some getting used too.

[yjcanibul]

thanks Buki ,  I like and cant argue with those numbers,  my thoughts were the aftermarket is mostly making superchargers for offroad cause you can use them at lower engine speeds to make the same/similar torque which if correct seems to be desirable,  I know they both offer lots of power improvements but where and how they make it in the powerband seems tobe whats important ...

this is a question more then a statement - I thought you had to push the vehical ( gas pedal = down, rpm = up ) to make use of the turbo and because they spin at 20,000 rpm they are really sensitive to dirty air opposed to a s-charger ...

thats a pretty huge undertaking and let me know how it goes cause I am always interested in such things and learn lots from these discussions ...