Need engine dimensions for One-off supercar

[mranlet]

Hey all - This is going to be a big message, but please bear with me...

I will soon be starting the ground-up fabrication of a drifting/auto crossing/stuff hauling/drag racing street rod. The frame will be made out of 2"x2"x.1" RHS [Rectangular Hollow Section] steel tubing with double wishbone suspension on all four wheels and pushrod dampening on the front. When finished, the curb weight could range anywhere from 1500-1800lbs with a power-weight ratio of 575+hp/ton depending on ENGINE CHOICE...

For the build I will mosy likely use a swapped-out KA24, but will replace it with a stronger powerplant shortly after.

These are the final motors/layouts I've been considering:-SR20DET RWD-RB20DET AWD (from GTS-Four)-VG30DET RWD-1/2JZ-GT(T)E RWD-RB25DET w/RWD (or to go in with someone wanting a RWD RB26 and swap transmissions so that I can have AWD)

What I really need to know is:1-How much do each of these motors weigh? (My sources put the SR20DET and trans at 490Lbs)2-What are the dimensions (length of block, length of trans, width of combo, height of block, height of trans)?3-Will 2"x2" RHS tubing fit alongside the motor just below the heads, or how much modification would be required?4-Where is the balancing point? (my sources put the balancing point of an SR20DET and trans is around the 3rd cylinder)

NOTE: I'd like to have the availibility of AWD in the future, but it'll most likely be impossible on my current budget. The AWD would preferably need to be disengag-able into RWD (drifting, to compete in more classes of drag/auto-X), so Subaru motors are out (in addition to the $5k price tag of an EJ20 and its too-far-forward balancing point). Cost of getting these motors to 500-600hp is also a consideration, but points 1 and 2 are much higher priority since proper weight distribution is more important to me than raw power.

Obviousally, I'm not expecting people to have answers to ALL of these parameters, but I want to find out as much information as I can so that I may make my decission well-informed.

Any acurate information would be GREATLY appreciated!!!

Thanks in advance!-MR

[IvoryJ30t]

i think what would help us out is if you have an idea of the basic layout of your project. the width of the nose, length of the "car" ect ect... i think the width of the motor would be more of a concern than the balance point because your fabbing up the car so you would be free to move it fore or aft. the real question is what "kind" of power are you looking for? a torquey motor with good top end, or a high strung, high rpm all HP motor?

[Mr1der]

might I suggest the engineering forums? lest you want a general answer:D

[Nismo_Freak]

2JZGTE

[mranlet]

All of these motors would be good for different reasons, and they all would be logical for my project...

Basically, there are no set-in-stone specifics like width, wheelbase, etc, other than that they would be somewhat close to normal production car values.

-Where would I find these "Engineering Forums"?

Thanks for the help thus far

-MR

[Nathan]

I'm going to say turbo a KA...why you ask? Because ALL the engines except the VG will need a rebuild to make that power reliably...in fact I'd probably even rebuild the VG if I was doing it. I rule the VG out though because it's just frieking enormous and a bit on the heavy side. The KA is about the same weight as all the others and a shade lighter than the RB25. Not to mention you have tons of parts available and there is allready a proven plan for making over 500whp on a KA.

[MainEvent212]

The KA is actually the worst choice IMO...

i'd say SR20 just because of the fact that it's small and light...aka, all aluminum

and at that weight you shouldnt need more than 250-300 hp to get you around at light speeds :pface

[Nathan]

It's not much lighter than the SR man...it's a negligible difference and you have the initial cost of buying it, and THEN having to rebuild it...same with the other import motor options. I like the 2JZ idea too but it's heavy as well.

[Nismo_Freak]

2JZ can support power levels of 800-1000rwhp on bone stock bottom ends. The RB26 has nothing on the 2JZ in terms of stock bottom end power production. The 2JZ also will spool turbos sooner, and has a large amount of torque. The only thing I prefer about the RB26 is that it has rev capacity.

[toki]

you're dumb.

drifting/auto crossing/stuff hauling/drag racing street rod.

you need to narrow that down a bit, because I gaurentee you if you try and do all of those, you will end up with a car that isn't really great at anything.

btw building a car from the ground up is pretty dumb also unless you have alot of free time, at which point, get a job, make some money, buy an R32. It will probably cost less and be a better "autox street rod" than your homemade chasis car. Seriously.

[MrFox]

-Where would I find these "Engineering Forums"?

NICO's engineering forum:http://www.nissaninfiniticlub....id=88

Its pretty quiet over there, but guys there like Q45tech are great resources. Drop by!

If you are seriously comtemplating this project, may I suggest http://www.Eng-tips.com/ ; automotive engineering.

Its pretty hardcore, guys there can be pretty harsh but are very knowledgeable (most work in the auto industry).

Good luck!

[dareo]

My mini-dream for a fully custom tube car is this. Get two nissan turbo FWD I4 engines, be it an SR or CA or KA, whatever.. and have a dual engine beast with over 1000hp and under 2500 pounds. Two junkyard Altima engines rebuilt and turbo'd would be perfect. the car could be superbly balanced, and have unmatched AWD. Have you guys seen that twin engine Tiburon? Something like that, but lighter, faster, and fully custom. Put like one seat in the middle and be all that and a bag of chips cool.

Want to get good gas mileage? Only start one engine.

Imagine rolling up to a car like you've never seen before, you rev on him, he looks over and says "its on!" and starts another engine, and lets you hear some BOV. He proceeds to do a sick 4 wheel burnout. How scared would you be? I just might piss my pants at that point.

Someday, when i have too much time and money....

[[Zero-S]]

Whoa...you my friend are twisted.