ArticDragon

RB20 just because I believe it'll give the car a better overall balance. As for the Rb25 having a better head, can't the heads be swapped?
That's dumb, sorry to say so bluntly. The car already has a front biased weight distribution. Putting in a heavier engine in the front and lightening the rear will only make it more front biased. I know Cath will come here and say a greater front biased is actually beneficial for drifting, but I'm talking road racing wise. The smart thing to do would be to lighten the front, not the rear, to compensate for the extra weight in the front.
My .02.

Levi SPL S14

Wow this thread is dumb.
no one makes parts for the RB20.
You still need to use a custom drive shaft. And custom mount's.

SO saying the RB25 is harder to install is dumb.

Sure tis cheap but you get what you pay for.

IF you want revs then go Built NA SR with ITB and rev to 11k all you want. Just like the N2 cars they race.

Fool.

98cwitr

granted..but I think my point is still valid. If you really want to get so technical (err...road racing wise )you could always just relocate the battery to the rear, add a carbon fiber hood...etc. Unless you are a cheap ***. IMHO if you are going with a RB20 you probably are doing it for the reason of "settling" for what you can afford. The RB25 is a BETTER engine...bottom line. um...isnt that what this thread was about anyway

ArticDragon

I was taking taking it one step further and stating what I believe is the better engine for the 240. BTW, I believe battery relocation is only necessary for plumbing reasons. I mean, how much does it weigh to effectively reduce weight or shift weight distribution?

jonpowell

Think about this....RB25 with a Blitz LM air filter and Blitz Realize TT exhaust(empty cat) made 255HP at the wheels stock boost(7 PSI). What are you going to have to add to the RB20 to get 255 at the wheels and is it going to cost more than the RB25 with exhaust & airfilter(you are gonna do this to the RB20 anyway so I think the prices cancel each other there.)

For me its no choice, .5L extra displacement, newer motors, VTC, stronger trans lower boost and more power all leads me to the 25...Plus with the recent developments of 580HP at the wheels on stock internals means that most people will never need to upgrade pistons & such.

RB26 with ~700CC injectors, stand alone & nice big FMIC will make 400HP at the wheels....so engine, + ~$1000(ECU) + ~$500(injectors) +~$600(IC) makes 400HP...I doubt that an RB20 plus $3000 and the mods listed above could put 400 to the ground and be a consistent daily driver.The extra boost required will make it tough on everything inside the motor and the headgasket.

The RB20 is a great motor....for its time period. Nissan fazed it out in favor of the RB25 for a reason...its just plain superior. Sorry to **** off everyone but its the truth. Same as the RB25 got fazed out for the NA VQ35...its just superior. 280HP, larger displacement and no turbo lag. If I could get ahold of a cheap VQ35 I would put it IMMEDIATELY into my 280Z...hands down...then turbo it!!!! HA HA HA HA HA

jonpowell

As for weight distribution, I challenge you, in a 300HP 50/50 balance car and Michael Schumacher in a 300HP 55/45 car to a time attack...both cars setup EXACTLY the same, same weight, same tires, same suspension....

I bet Mike wins. It's all about the DRIVER'S ability to compensate for the cars imperfections. Forget about weight balance and lets move on...its a TIRED TIRED TIRED subject and everyone else who has an RB25/RB26 has learned how to deal & moved on. Only the people who like to bench race still harp on the weight balance subject.

Besides I have seen an RB car with 51/49 balance after weight relocation & proper suspension setup...thats pretty good, aint it?