Ok, now I was never a fan of bench racing, but I had just wondered something and did a search but couldn't find the answer (BTW, if there is a thread and I'm missing it feel free to post up a link and tell me to **** off, I won't take offense).

I had wondered how a 2003-2005 350Z 6-spd with an MD 5/16 Iso plenum spacer and stock 06 intake box would do up against a bone stock 2007-2008 350Z. I wondered this because I know the power difference stock for stock is about 20hp, and the Z got a little heavier over the years (~200lbs from what I understand).

The reason I said if the 03-05 had a spacer + stock 06 intake box is because it would than put it on par (upgrade wise) with the HR since Nissan eliminated the need for a spacer, and then both cars would have right around 305hp at the crank (give or take a few).

So with the power being almost equal, and the weight, I figure it would be a pretty close pull. I'm not one for actually racing myself, so I'm not about to go find out. Someone on here had to have thought about this before and did it, and I'm curious as to the outcome.

Again, if this has been covered in the past and I just couldn't find the thread with the information, just post up a link and call me names, heh


Edit: This was moved by a mod from the "General" to the "Drag" section, but I am curious on car vs. car. Drag racing is all the driver (I was an NHRA tech assistant for 3 years), hopefully someone in here still has some info though.

 

A 2003 is not getting 305 crank hp just from an airbox and a spacer. It might be like 290, give or take a few. I also don't think that the slight weight advantage of the older car is going to cancel out the 20+ whp and the better powerband of the HR. Given equal drivers, I think the HR is still going to walk away.

 

Well that's a shame because I would give you a “well done” if you were out there trying. 15 14 13 seconds no matter. Never let someone do your racing for you. Its pathetic.

 

+1.

 

I was just taking the stock 287hp and adding Motordyne's advertised increase of up to 14hp, giving it 301. I don't know how much the 06 box adds, but my guess is the box+spacer= 300-305hp crank. Of course I have no real numbers, only estimates.

And I also think that the HR will walk away, I was only trying to see by how much.

I had my racing days way back when I was a teen when I played around with turbo DSM's doing consistant 11 second passes. I used to live down the street from a dragway and also worked there back in high school, therefore I raced for free. I also used to have a 500+whp 300ZX TT that I built up to do highway runs, but to many points on the license led me to sell it and pick up the 350 a couple years ago. Now I just cruise, no need to race or speed in general. I had a few friends lose their life over it in the past 4 years so it hits home when it comes to racing and going fast.

As for legal drag racing, I'm over breaking things, heh. I used to be fixing stuff night and day to be able to race the next week. Now that I'm older, have a family, and real responsibilities, its hard to find time for things like that with work, graduate classes, keeping up around the house, and no garage or tools anymore. It would be a big commitment in time and money to get back into drag racing. And I know that if I do it once, I'll want to get back in full force!

When things start to get less hectic around here I may see myself in this section a little more often though

 

The HR in STOCK form has trapped (with a good driver) 1mph higher than what we have seen a good driver in a full bolt on DE....

Same drives the HR walks it every time.

The DE would need many more mods just to be able to hang with it let alone beat the HR.

Of course on the street a good driver in a stock 03' COULD beat a so so guy in an HR.

 

Yes very true, with such similar cars it would definitely be a drivers race.

What do you define as "full bolt-on"? I'm just curious because a lot of people include different things.

 

I personally define full bolt on as.. intake, plenum spacer (if applicable), headers, test pipes or hfc's, exhaust. basically all the breathing mods that make any power. some will include other things like pulleys, flywheels etc..

 

14hp, HAHA. If only.

 

What? I highly doubt a plenum spacer and a intake box would get you anywhere near 290.

I hate the fact Nissan overrates there power.

 

I thought Motordyne's dynos were fairly accurate?

What is the actual crank hp for an 03-05 then? Far below 287?

 

I think they were looking at the whp and not bhp. But all your looking at is hp figures and not focusing on where they are making power. Honestly my 06 traps what the stock 03's do. 101-102 mph. My 06 can pull 03-05's fairly easily with intakes only even despite the weight advantage.

The HR's however are in the 105-107 range stock. A full bolt on DE is in that range also. The HR's superiority comes in the fact that its midrange power is much stronger, plus it pulls top end. Lastly the HR puts alot more power to the ground than the 03-05 especially and 06.

 

GTR.