SR20DETT, anyone????

[fairladyz]

Twin-Turbo SR20DE motor.......I'm speechless. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>

[silviasichigo]

I have not seen that one but in option the one woth the green FD on it they had a Japanese guy with a SR20DETT S13 IT was like 700ps at the wheels?? Can't remember I left the mag at work I also have it scanned and posted in the webshots album.

[ca18guy]

The way there set-up looks horrible

[silviasichigo]

That is what I would like to call a lack of space for a lot of power.

[fairladyz]

I don't think those turbos will ever spool. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=''> &nbsp;Seriously though, why would they twin turbocharge a inline 4 engine??? Wouldn't it be better to just go with a huge single snail??

[silviasichigo]

Well actually this other guy I was talking about runs 9 sec 1/4 withthe twin set up

[uuninja]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (fairladyz @ June 25 2002,06:06)</td></tr><tr><td id="QUOTE">I don't think those turbos will ever spool. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=''> Seriously though, why would they twin turbocharge a inline 4 engine??? Wouldn't it be better to just go with a huge single snail??</td></tr></table><span id='postcolor'>
The moment of inertia increases larger the turbo gets. Basically if you had 2 small turbo's vs one large turbo both inducing the same amount of air, it would take about twice as much energy to spin the large turbo. That is strictly a text book answer, so take it with a grain of salt. But it is totally possible for a sequential turbo setup to flow the same volume of air and spool faster that a single large turbo. However there are more variables that would come in to play in any specific instance. One other thing to consider is a single large turbo is a lot simpler and less expensive than using 2 smaller size turbos.

Here is a link to another discussion on sequential vs single turbo's with some really good info and some physics notes <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=''> care of freshalloy's own Asad.

link.

[robinlow]

Twin Turbo will certainly give better pick up..

I had an RX7 FD before I got my Silvia, and the twin turbo was pretty impressive to get your car up to speed, however I tried putting a big turbo, I got a lot more horses on Dyno, but my 0-60 actually suffered.

I did 12.37s on 1/4 mile on twin turbo
But 10.77s on a single big turbo.

Top end is much better for big turbo..

If you are just driving on the streets with lots of traffic lights, twin turbo would be better..


'96 - S14
SR20DET HKS GT2530 Turbo
(Doing RB26DETT Swap if $$ allows)