Weight Balance Of R32

[Phantom32]

hey guys, just had a quick question

i did the rb25 transplant in my 32 a little while back and have noticed it is a little more front heavy.

Does anyone know exactly how much more the rb25 weighs compared to the rb20?

Also, to counteract this problem, would fitting a CF or fibreglass bonnet fix the problem?

The car does feel a little more front heavy at times which is only noticable with some spirited driving.

Anyone else have this problem and have a good solution?

Cheers and thanks in advance

[Big Rizza]

I call placaebo effect. The RB25 is on a very basic level essentially an RB20 with bigger holes in the engine block, so I wouldn't think the weight shift would be much. The amount of fuel in the car would have more of an effect on weight balance than the new engine IMO.

Anyone got the actual engine weights?

[Phantom32]

i do remember seeing a thread a few months back where someone knew the actual figure differences of the two engines.

think it was in the 100's or something. can anyone confirm that?

also, how much weight does replacing the stock bonnet with a fibreglass item save?

[Absent]

This is a good question, Im planning the rb25 conversion now and would like to know the weight difference and how it affects the balance of the car.

I have a few other questions for you phantom:

Did you change the gearbox aswell? do you have to?

How is it to drive? is the torque increase huge?

Sorry to hijack the thread with my dumb questions but hey

[Big Rizza]

i do remember seeing a thread a few months back where someone knew the actual figure differences of the two engines.

think it was in the 100's or something. can anyone confirm that?

also, how much weight does replacing the stock bonnet with a fibreglass item save?

There's like 100kg between the SR20, an all alloy 4 cyl, and the RB20, an iron block 6cyl. I can't imagine the gap between RB20 and RB25 to be greater than the gap between SR20 and RB20... COuld be mistaken though...

[Phantom32]

Tuff R32 - yes, i did the gearbox too

in short, once u have the rb25 you will realise how much of a lagger the rb20 was. Torqe is increased dramatically, overall driveability is greater, you don't need to hit boost to get the car to move.

I've also been told that a 200rwkw rb25 in an r32 can do a 12sec run?? altho i'm not sure on those figures.

If u have any other questions on whats required to make it all fit, shoot me a PM>

Rizz, i know u know heaps about the different models nissan produces - anything in there about engine weights?

[Munna1]

A 200rwkw R33 can do 12 second runs to mate.

cheers

[BezerkR32]

This i would like too see.

A 200rwkw R33 can do 12 second runs to mate.

cheers

[Munna1]

This i would like too see.

Its been done plenty of times now - stock turbo, good suspention, tyres, and driver, very possible.

cheers

[Phantom32]

we're talking high twelves aren't we?

with good driver skill.

my mate had 230kwatw in his 180 and ran a 12.5 on street tyres and we consider him a pretty damn good driver.

i'm a little doubtful about 12's with 200kw....was at calder the other night and there were easily 200+ lines there but they were doing in the 13's