Is there life after SR20DE* ?

johansx · Post by **johansx** » Thu Jun 14, 2007 8:16 pm

Interesting read on the new engine set to replace the SR and KA series...

http://www.sportcompactcarweb.com/tech/ ... index.html

veecee · Post by **veecee** » Fri Jun 15, 2007 9:24 am

i've been daydreaming in traffic for a while now about this engine, and the way it behaves under my accelerator pedal ont he way to work.

i keep thinking "this feels really torquey underfoot, it pulls hard from about 2000rpm, how would it behave with a nicely matched turbo, can i mount it longitudinally, what gearbox would i use, when will the aftermarket tuning bits start appearing"

i also think "it has quite a long stroke (100mm) compared to bore (89mm), so can we widen the bore to increase the capactiy, yet still be safe and reliable"

i also think "its not really a pretty motor, like SR is, so can we get decent engine covers, for the show factor"

then i think "are they even importing them yet?"

its a very thought provoking motor, it seems!

veecee · Post by **veecee** » Fri Jun 15, 2007 9:25 am

i forgot to say that i have one in my xtrail 2.5 4x4.

Gary57 · Post by **Gary57** » Fri Jun 15, 2007 9:26 am

my xtrail 2.5 4x4.

You guys definately earn too much money.

veecee · Post by **veecee** » Fri Jun 15, 2007 9:28 am

Gary57 wrote:
my xtrail 2.5 4x4.
You guys definately earn too much money.

you're young, you'll get there eventually!

Gary57 · Post by **Gary57** » Fri Jun 15, 2007 9:29 am

you're young, you'll get there eventually!

Its taking too long.

veecee · Post by **veecee** » Fri Jun 15, 2007 9:39 am

i forgot ...

johansx · Post by **johansx** » Fri Jun 15, 2007 9:44 am

The only bit I don't like is the open deck. Reminds me of an old grilfriend with her Peagot 305 or something.... blown head gasket. They lighter valves, cams etc. will probably be more expensive to mod or get aftermarket parts and expertise.

Maybe I will stick with the SR or RB series a bit longer.

Sokar · Post by **Sokar** » Fri Jun 15, 2007 9:57 am

Any motor that needs counter rotating balance shafts to stop the motor from shaking itself apart, shouldnt have a space in the "Performance" Market.....

veecee · Post by **veecee** » Fri Jun 15, 2007 12:51 pm

Sokar wrote:Any motor that needs counter rotating balance shafts to stop the motor from shaking itself apart, shouldnt have a space in the "Performance" Market.....

hhhmmmm... you should forget about putting a rotary into your beemer then!!!

Gary57 · Post by **Gary57** » Fri Jun 15, 2007 12:55 pm

Any motor that needs counter rotating balance shafts to stop the motor from shaking itself apart, shouldnt have a space in the "Performance" Market.....

Lancia motors used this design and won numerous world rally championships with it.

Sokar · Post by **Sokar** » Fri Jun 15, 2007 3:40 pm

Gary57 wrote:Lancia motors used this design and won numerous world rally championships with it.

Yes, Used, gone, forgotten... Re-read the article, Nissan has taken all the nice "beefyness" out of the motor loosing alot of the potential and bringing it closer to the borderline. Its power figures are also not impressive for this day and age, and the power can be chalked up to 1 thing, the increase in displacement.

Its an Evolution, but an evolution towards better economy and cost saving. I'll never see this motor as a superior "Evolution" to the CA or SR. Listen to yourselves, this engine has the same displacement as a N/A RB25DE? What would you rather have.......

Sokar · Post by **Sokar** » Fri Jun 15, 2007 3:44 pm

veecee wrote:hhhmmmm... you should forget about putting a rotary into your beemer then!!!

????

The Calibrator · Post by **The Calibrator** » Fri Jun 15, 2007 7:01 pm

100mm stroke= blows up over 7000rpm.

Can you imagine the piston speed at 8000rpm?

I had the dubious privelige of driving a Oetinger 2.2ltr 16v Golf with 100mm stroke and 93mm bores.
It was a tractor even with head work and cams.