Engine Swaps? What's the deal?

[thekawaii]

JUST SWAP WHATEVER YOU CAN.

It doesn't matter how great your engine is, without proper tuning and caring, you'll mess up so bad with either low ka24e or high rb26dett whatever.Some people i saw at the shop, blew up their VG or whatever engine with just 5 psi of boost, cuz he didn't take care of it.

[Dattebayo]

6 cylinder is not accepted as being better than 4. Larger displacement is generally, but the amount of cylinders has nothing to do with just how good a motor is.

As for motor swaps, the CA is a turbo JDM swap motor with a good design and has american parts available for easy fixes. It also costs about 1K for a full set when you can find it.

But nobody wants the little motor because they dont ever hear anything about it. *sigh*

[Eikon]

Hey guys.. I've been watching this thread for a while, and it is very interesting. First a short intro, then I want to pose a theoretical question..

Obviously not the first time we've argued about which engine is better. But, there are a couple new people who've chimed in on this thread who have some interesting perspectives and background knowledge.

Scottsi: It is great to have you here on NICO. Welcome! You clearly have a lot of knowledge and previous experience with a variety of Nissan engines. It's great to have you as a new resource. Thanks for signing up and sharing with us. Hope to see you lots on the RB board and all of NICO. I am especially interested in what you learn and can contribute on engine management. It will be cool to see what Carl turns up with the BIKI system as well.

Anyhow... Now to pose a question. A bit of a newb question, but again, I am interested in your perspectives..

Scottsi... in your post below you state that "more cylanders respond better to modification". Another statement is... "there's no replacement for displaceent". Which one is more accurate? Which is more important.. The size of a cylander or the # of cylanders?

What is more important.... # of cylanders or displacement?Take for example this very hypothetical question... SR vs. RB... Sr20 is 4 cylander at .5L per cylander. RB20 is 6 cylander at .33 per cylander. Both engines have equal displacement.

Let's say you had infinite ability to modify an engine... So you wanted to take the two engines and equalize them at 3L and 6 cylanders.

Take the SR and add two more cylanders... In other words, would the SR be a more powerful engine than the RB if it were an I6?Take the RB20 and add 1 liter of displacement.... oh wait.. we already have a 3L RB.. and that's a beast!

Which one would be more powerful?Is there truly "No replacement for displacement". Or do "more cylanders respond better to modification". Both are true statements, but which one is more true?

We already know of the Rb30et and how remarkable it can be... But, what of the SR20...

[SimpleEnigma]

What about the VG30ET....the single turbo motor from the z31? it is the same block as the z32, but it is a SOHC instead of a DOHC and lacks a turbo... they still make very decent HP and torque. Would be a bit easier to work on since you dont have the piping from two turbos to deal with....My best friend runs 15psi non-intercooled on the stock motor and turbo with no trouble at all. parts for that guy are relatively cheap. even though it runs very low compression in stock trim, all you would have to do is swap out the pistons for the ones in the NA VG30E and you would be set.

[scottsi]

Hey guys.. I've been watching this thread for a while, and it is very interesting. First a short intro, then I want to pose a theoretical question..

Obviously not the first time we've argued about which engine is better. But, there are a couple new people who've chimed in on this thread who have some interesting perspectives and background knowledge.

Scottsi: It is great to have you here on NICO. Welcome! You clearly have a lot of knowledge and previous experience with a variety of Nissan engines. It's great to have you as a new resource. Thanks for signing up and sharing with us. Hope to see you lots on the RB board and all of NICO. I am especially interested in what you learn and can contribute on engine management. It will be cool to see what Carl turns up with the BIKI system as well.

Anyhow... Now to pose a question. A bit of a newb question, but again, I am interested in your perspectives..

Scottsi... in your post below you state that "more cylanders respond better to modification". Another statement is... "there's no replacement for displaceent". Which one is more accurate? Which is more important.. The size of a cylander or the # of cylanders?

What is more important.... # of cylanders or displacement?Take for example this very hypothetical question... SR vs. RB... Sr20 is 4 cylander at .5L per cylander. RB20 is 6 cylander at .33 per cylander. Both engines have equal displacement.

Let's say you had infinite ability to modify an engine... So you wanted to take the two engines and equalize them at 3L and 6 cylanders.

Take the SR and add two more cylanders... In other words, would the SR be a more powerful engine than the RB if it were an I6?Take the RB20 and add 1 liter of displacement.... oh wait.. we already have a 3L RB.. and that's a beast!

Which one would be more powerful?Is there truly "No replacement for displacement". Or do "more cylanders respond better to modification". Both are true statements, but which one is more true?

We already know of the Rb30et and how remarkable it can be... But, what of the SR20...

well, no replacement for displacement is true, and so is more cylinders respond better to modification. but hmm, you pose a very interesting question.

SO theroretically, say you had a 2.6l SR, while still being a 4 cylinder, and say you have a rb26dett. Now the rb26dett will rev much higher and make more high end horsepower, and the "2.6l SR" will make GOBS of torque, probably surpassing the ammount of hp made. its a give and take of whether youre trying to make HP or TQ which depeneds on the R/s ratio. a bigger engine(displacement) will make more torque no doubt, but then you get into rod to stroke ratio, which one has a longer stroke will make more tq, but will not be able to rev as high and might not make as much HP, but a engine with a shorter stroke, more cylinders, and the same displacement will make more HP and less tq, while revving much higher.

If you had infinite ability to build each engine, honestly, i dont know which would make more 'power'. Id like to say the one with more cylinders but i really dont know. What im arguing about in this thread is a stock for stock engine, which one has the most capability and potential:cost:dificulty to work on

edit

after reading this once more

Take for example this very hypothetical question... SR vs. RB... Sr20 is 4 cylander at .5L per cylander. RB20 is 6 cylander at .33 per cylander. Both engines have equal displacement.

Let's say you had infinite ability to modify an engine... So you wanted to take the two engines and equalize them at 3L and 6 cylanders.

Take the SR and add two more cylanders... In other words, would the SR be a more powerful engine than the RB if it were an I6?Take the RB20 and add 1 liter of displacement.... oh wait.. we already have a 3L RB.. and that's a beast!"

doing so would therorectially create the same engine, they would have the same r/s ratio (given you are creating this displacement by giving the engine more stroke instead of piston diameter) and the one that would make the most power would be the one that has the best flowing/designed head, if they both had the most headwork done possible, exact same cams with the same lift/duration, the best turbo setup, exactly the same on both of them, and ran the same ammount of boost.

but who knows its never been done, and ive only been working on nissans for a year while being just 19 if i've managed to confuse anyone else ive done my job lol