CA18 is a baby RB25

Vlade · Post by **Vlade** » Wed Nov 21, 2007 9:49 am

I've been reading this thread... looking at that block and head... its near identical except for 2 extra cylinders... http://www.sxoc.co.uk/vbb/showthread.php?t=260568

Man I would love a RB in the SX

Daniel · Post by **Daniel** » Wed Nov 21, 2007 10:03 am

me to!

hopefully it would break less

Sokar · Post by **Sokar** » Wed Nov 21, 2007 10:03 am

You only noticed this now?

I've been ripping Phinx off about his "Baby RB" for years!!!

You can interchange coil packs, Cam gear covers, Cas, lifters and other stuff with an RB...

Vlade · Post by **Vlade** » Wed Nov 21, 2007 10:19 am

nah i've seen the blocks look very similar before, but thought there was other differences but now... that I saw that thread... its like damn man its the same thing

the cylinder sizes is actually a little smaller than the ca18 they are 416cc odd... where the ca is 450cc odd

jon · Post by **jon** » Wed Nov 21, 2007 11:00 am

What's the weight difference between the RB25 and the CA18?

Surely you would have to change your suspension setup to cope with the extra weight up front?

Sokar · Post by **Sokar** » Wed Nov 21, 2007 11:37 am

jon wrote:What's the weight difference between the RB25 and the CA18?

Surely you would have to change your suspension setup to cope with the extra weight up front?

Lets put it this way, if you have enough money for a RB swap, then a set of springs or coilovers wont be a problem, but yeah, you wont cope on the stock suspension and ill need to get something beefier.

Phinx · Post by **Phinx** » Wed Nov 21, 2007 11:45 am

Well the Cam covers not really but can be made to fit, But the Ca18 head suffers from the same head drainage problems as the RB.
The RB injectors fit 444cc does anyone have a set?

Most of the design is the same, both are excellent motors and the RB has been proven to make power time and again but I still personally think that the CA18 was sold short for the SR20. Don’t get me wrong I might be going a bit off topic here but if the Aftermarket support existed for the CA18 as for the SR20 people would be changing there tune

Wiki Info – Now lets compare Apples with Apples…….

CA18
The CA18DE is a 1.8 L DOHC 16v (1809 cc) engine produced from 1987 through 1989. It produces 131 hp @6400 rpm and 159 nm @5200 rpm. It has the same head as the CA18DET, however it did not use a crank girdle nor piston oil squirters that are found on the CA18DETs.
SR 18
The SR18DE is a 1.8 L (1838 cc) DOHC engine. It produces 125 PS (92 kW) @6000 rpm and 156 nm @4800 rpm

Wiki Info – Now let’s compare Apples with Pears…….

SR20DE engine - 140 hp (104 kW) @ 6400 rpm and 132 ft•lbf (179 N•m) of torque @ 4800 rpm

Not Bad , but Remember may the FLOW be with you

Doctor G · Post by **Doctor G** » Wed Nov 21, 2007 1:28 pm

I owned a few NA CA18DE's in my life and they all had oil squirters/piston coolers

But I agree with phinx the CA18 not such a bad motor as everyone thinks.

The state we find them in and some reliability issues are mainly due to neglect and improper maintenance for 15 odd years.

Gary57 · Post by **Gary57** » Wed Nov 21, 2007 1:42 pm

I think the CA is a darn good motor, the reason the SR makes more power is because it has 200cc on the CA.

Phinx · Post by **Phinx** » Wed Nov 21, 2007 3:23 pm

Now Dont get me Wrong I like the CA18 and this is not a SR bashing thread but it just sad that Nissan never took a second look at the motor.

Like the CA18Vet , Just joking or CA20DET (none hillbilly made)

Gary57 · Post by **Gary57** » Wed Nov 21, 2007 3:30 pm

the cylinder sizes is actually a little smaller than the ca18 they are 416cc odd... where the ca is 450cc odd

So wouldnt this make it identicle to the RB26??

veecee · Post by **veecee** » Wed Nov 21, 2007 3:40 pm

i've been driving my sx in its current condition for exactly a week now.

its smooth, its responsive, its strong, its rev happy, and i'm loving it.

the ca18det in this kind of condition is an awesome motor to be in control of. i totally agree with phinx. the ca18 was sold short, and i agree with vlade - they've been misused and abused for 15 years!

if only i could get the kind of power the RB's get, at the same low revs, then it would be perfect.

and ...

I'VE READ THE FRIGGIN GUIDELINES!!!

Vlade · Post by **Vlade** » Wed Nov 21, 2007 3:58 pm

Don't worry hence the lack of posts today

Gary57 · Post by **Gary57** » Wed Nov 21, 2007 4:11 pm

Don't worry hence the lack of posts today

I'VE READ THE FRIGGIN GUIDELINES TOO!!!