rb20 stroker???

[fast_s13]

i heard that you could take a gt-r crank and 82mm pistons with a rb20 block to make it a 2.4 stroker.. is this true if so im all over it

[Yellow4g63]

What did you come up with when you used the Search button?

[DSMs_Suck]

i heard that you could take a gt-r crank and 82mm pistons with a rb20 block to make it a 2.4 stroker.. is this true if so im all over it

cant pass this opportunity up (read: take no offence to this) but..

Hello... and welcome to last week!

Yes it can be done

Murray

[Joe]

i heard that you could take a gt-r crank and 82mm pistons with a rb20 block to make it a 2.4 stroker.. is this true if so im all over it

lol with the money you are gonna spend on a GTR crank and new pistons you could just get forged pistons/rods for the RB20 and a bigger turbo.

[DSMs_Suck]

lol with the money you are gonna spend on a GTR crank and new pistons you could just get forged pistons/rods for the RB20 and a bigger turbo.

And not get the displacement?!

All in all i really like the idea of the rb24... assuming you dont need any sleeves to bore out to 82mm (cause that starts getting really pricey then). Keep in mind if he was to go with an RB24 you would have an RB26 crank/rods which are for most cases the same as forged crank/rods (that bottom end has been proven to 800+ whp) and you would have custom forged pistons. So the rb24 DOES in fact have a forged bottom end AND gets .4l of displacement to boot.

My $.02

Murray

[Gold Digger]

Talk about reviving an old thread.

I am thinking this same route on the Laurel. I'm thinking on going RB22 though. 25 crank, rods, and pistons...if I remember right.

I have been thinking about this for a couple days, and have some time to do it right. Thinkin on pullin the motor and takin about a year or so to build it up right, and also because I am on a tight budget, and make a monster RB20 out of it. It would get a completely new bottom end and the head would be redone with new cams. The stock turbo would go bu-bye for a nice HKS or Blitz unit. All in all, I know I am gonna drop some serious coin on this, but I really love my Laurel, and I would like to see what can be accomplished with a 20 on a mild budget over time.

[themadscientist]

If you have an RB26 full rotating assembly I would put it back in the RB26 and quit screwing around. The 2 liter is fine as it is.

[unstable240]

You cannot use 25 or 26 pistons in the 20 they are too large. I am personally building a 2.2 setup with just bored over forged pistons. I am still deciding on wether I am going to keep the stock rods, or have a set of custom ones made up. Unless you some how luck up and some one gives you the 26 parts for cheap, or you find them it isn't worth it. Most guys ask for a lot of coin for the internals. Again same thing with the 25 not a lot of people have the internals sitting around and usually want a good bit for them. I think a 2.2 built up will be plenty for my needs and most everyone else to, but I know everyone always wants to be different to...

[RB20DETodd]

lol with the money you are gonna spend on a GTR crank and new pistons you could just get forged pistons/rods for the RB20 and a bigger turbo.

truth

[Eikon]

yeah..I've never understood the logic behind a stroker build on an RB20det. I mean, I guess if you have the parts laying around in your garage already, than sure, have at it.

If you are worried about .4L just spend the money you are planning on the RB26 equipment on getting an RB25. Now you have the extra displacement.

Heck if your that worried about displacement, why do you even have an RB?

[DriftingisLame]

Forged internals, cams, very large turbo

30 psi.

if you want more displacement, then go with a 25.

..thats what I'd do.

[Gold Digger]

Heck if your that worried about displacement, why do you even have an RB?

Ummm, it came stock in my car.....that's why.

Also, not to many people where I live make their Laurels into a sleeper. It's always the Skylines, Supras, Silvias, RX7's, etc...

[Gold Digger]

You cannot use 25 or 26 pistons in the 20 they are too large.

According to this website you can, that's where I got the idea from.

http://www.meggala.com/nissanrb3css.htm

[Carl H]

According to this website you can, that's where I got the idea from.

http://www.meggala.com/nissanrb3css.htm

no still need to use aftermarket pistons to come up with a rb24 combo.if you use rb25 or 26 pistons you will undoubtly be in the water jackets.......put some good forged pistons in a rb20, clean the stock rods, set of decent cams, gt30r and you will be set for a whale of a time.

[s14 2510's]

Should have just bought a rb26 if you are looking to do all that. JK 26 parts cost hella. 2.4L is the biggest I would go but thats me. O and I know nothing about rb20's. It sounds like too mutch work for a hole load of nothing too impressive to me. More power to you if you want to try it out. But have you added up the price of all the other parts needed to make good reliable hp. I would say do that first then see what you have for extra bling to go crazy on internal work.

[themadscientist]

RB26DETT crankRB26DETT rods small end bushed for new pin4AGZE pistons.

[Gold Digger]

is that your recipie there MAD?

[themadscientist]

No, just the one I have always been told. I like the 20 as a 2 liter. When I wanted displacement I found a 2.8 deisel engine and bolted a DOHC head on it.

[unstable240]

According to this website you can, that's where I got the idea from.

http://www.meggala.com/nissanrb3css.htm

Do you think you can bore from 78 to 86 without hitting the jackets? I mean going 8mm over is crazy. Go 2.2 and call it a day. If you need more power then you should get another motor. If you want a lot of power throw a 30 in it or even better a TB42E with a big single...

[Shahee1]

Go ahead and stroke the RB20 ... the displacement will work wonders for the engine ... not to mention that the RB26DETT internals make the engine that much more reliable. The stock RB26DETT internals are well known to be reliable to over 800HP with good tuning. The internals in an RB26DETT are just as good as forged internals. Its a relly nice upgrade if you secure the parts at a really nice price. I got my R33 Crank and Rods for $200 and 4agze pistons for $100. The pistons for the 2.4 conversion have to be 81.5 - 82mm. Anything bigger than that and you will have problems. Clean up and port the Heads ... nice set of cams ... You'll be good!!! The characteristic of the motor will be different than rb25 and 26 ... a lil addition in displacement is always welcome ... LOL ... the conversion will be much like the muscle car guys getting their 305/350 stroked with stock internals from other motors. Buying another engine hoping and praying that it does not need a rebuild is a little more expensive than what you are about to do. Fix what you have ... at least you know what you will know the motor. If you think you want big number from the motor, you can get forged aftermarket forged rb26dett rods and tomei pistons which happen to be exactly the same as the 4agze pistons except the wrist pins.
Modified by Shahee1 at 4:49 AM 1/2/2006