...before my stupid driver side axle popped out on the way back, no more o'ring and probablly a messed up differential. Wonderful.

On the plus side, I beat my previous trap speed record.

Weekdays at the track suck hard for traction so I wasn't expecting much and only got in 4 runs (way too many people).

R/T: .027
60': 2.287 (that's how bad it sucked)
1/8: 9.144
1/4: 13.939
MPH: 105.190

R/T: .048
60': 2.359
1/8: 9.226
1/4: 14.000
MPH: 105.442

R/T: .011
60': 2.402
1/8: 9.211
1/4: 13.998
MPH: 105.764

R/T -.033
60': 2.264
1/8: 8.998
1/4: 13.772
MPH: 105.881

Worn all-seasons as always. If I could have pulled 2.0's like I normally do I would have expected solid mid 13's.

The air was absolutely perfect, very cold, and the car was pulling hard on the highway on my way there. The engine loves that (hence the high trap speeds), but the tires don't, hence the so-so ET's or horrible 60 foot times.

I'm not fixing the car until next year, it's going in storage that way.

 

Nice traps.

So what's going to happen over the winter?

 

Good trap speeds. Sucks about the axle.

 

Yeah I was freezing my ***** off. Canadian air this time of the year is a mod in itself.

Winter projects (more like making money and slowly buying the parts during the winter and getting it on late March/early April:

- Change the VLSD differencial (it was broke, working as an open diff anyway) for a 10 bolt Altima/Stanza VLSD diffy and replace the 3.82 final drive with the 4.47 Final drive from an AWD Axxess. Diffy, ring/pinion can be had for 300$cnd.

This is basically like a 5.0 notch replacing the 3.08 stock gears with a set of 3.73's. There's a reason this is the first mod they do.

- Axle, brakes, ball joints and suspension (Tokico Illuminas w/ the Tokico springs). The car is still sitting on the 4x4 stock suspension.

- Stickier tires up front (Toyo RA-1, maybe BFG's, anything that fits on the stock sawblades and has a smaller diameter).

- E-manage Ultimate once those f*ckers at Greddy add the VQ30 to the applications.

- An intake manifold that flows up top.

- New paint job sometime in the spring.

The plan is to try to go 12.999 on my daily tires.

 

is this basically a 4th gen with a 3.5 block with ypipe intake exhaust?

 

Headers instead of ypipe. Not that it makes a big difference anyway.

 

3.5 with I/H/E and sawblades... i think the car is on a diet. btw, untuned....

damn, i'm on this site too much

 

The car is far from on a diet. The only weight reduction comes from under the hood (AC, PS, UDP, 3.5 being 35 lbs lighter than the 3.0, and other crap like random brackets and bolts), and a removed spare tire. The rest is a fully loaded SE with heated seats, ABS, sunroof and power seats. The passenger cabin is completely unaltered... right about the sawblades, so the car looks stock from the outside AND the inside. Just the exhaust note that betrays me...

 

What's your raceweight JClaw? And so far you've left the interior in right (seats etc)?

 

Great trap speed, get some stikies and 1.70-1.80 60' then you should be in the 12's fosho.
I'm still stuck with the dreaded car shop curse ... One day I will overcome and finnaly head to the strip.

 

my bad jclaw, i thought you had weight reduction. maybe because maybe ppl with 3.5 swaps mention how much of a benefit it is to do weight reduction and your times look good.

 

Unless 3.5L swap can be counted as "weight reduction" as well ...

 

Raceweight should be around 3050 lbs. I've never taken anything out of my car to race except spare and jack. I weight around 165-170.

 

Awesome traps

 

Cartest has a test called parameter sensitivity, where it will check the best possible combination of any parameter you want to check. I set it to 1/4 mile, and set it up for my car. When I do gear ratio, and lock gears 1-5 as fixed (so it will only try different final drive ratios), it comes up with a best of 5.76 on the final drive. But, this mod only gives less than a full tenth in the 1/4 mile (13.76 to 13.70 for me). Your car might be different because of the torque, but it doesn't seem like as big a mod as 3.73's on a mustang. A 4.47 final drive only changes me from 13.76 to 13.72 (at a lower trap speed), so it may not be worth the trouble.

 

That's wierd because Neal ran a simulation for me a while back and it had me down from 13.3 to 13.1, even though it had me shifting into 5th gear at 6300 rpms. So I was assuming a quarter of a second.

In any case, the mod IS significant for FWD cars too, Hondas have a 4.9 final drive available (vs, say, a stock 4.4 final drive from a GSR) and they say it is the most significant bolt on for the money.

Also, I'm pretty sure the reason 6th gens are just as fast as 5.5 gens is the final drive: 6th gens weight 220-250 lbs more than 5.5's, but their final drive is 4.13 instead of 3.81 (for 6-speeds).

Maybe cartest was overcompensating wheelspin, because I highly doubt it gives that little: I'd be finishing the 1/4 mile at well over 6000 rpms in 4th gear with the 4.4:1 FD. Right now I'm finishing it at 5100-5200 rpms in 4th gear. The lower FD would allow me to use 4th gear ALOT more efficiently, ending past peak power instead of ending at the very beginning of said gear.

The other reason I don't believe these results' validity is that I used to have the first two gears of a 2000 Altima in this car, and my 60 foots went down from low 2.1's to mid 2.0's because my first gear was 3.400 instead of 3.285. If changing an individual gear can do that much of a difference, changing the FD certainly will help a lot.

A thought: could you run the same simulation for a 5.0 'stang? See what results it give you... we know for a fact that 3.73's usually give a couple of tenths and 2-3 mph.

 

You "used" to have 2 gears from an Altima in your car?

So what gears are you planning to run then once you get everything finalized? (list them please)

I also have CarTest along with a dragracing analyzer and will be running a bunch of scenarios on my own car.

 

axxess awd final drive ring is a different diameter and wont fit, been there tried it.

 

axxess awd final drive ring is a different diameter and wont fit, been there tried it.

 

I bought the gear. It fits in the casing, the diameter is the same, meshes perfectly, mainshaft fits in my case, the gear itself fits perfectly around the differencial. The ONLY problem is that the 4.47 gear has 10 bolts instead of 16 bolts like the stock 3.823 final drive. The FWD 50 series VLSD Altima/Stanza differencials are supposed to be 10 bolts and use the same axle pattern.

Maybe yours is an open diff. In any case I've had my transmission open a few times and I can CONFIRM you that the 4.47 and 3.82 final drive gears are EXACTLY the same size, and have the same EXACT inside diameter. The 3.82 has 65 teeth on the gear and 17 on its corresponding mainshaft, and the 4.47 has 76 teeth on the gear and 17 on its corresponding mainshaft. 65/17 = 3.82. 76/17 = 4.47.

 

I can get pics of a VLSD max trans ring/axxes awd ring and max open diff ring they are all different, maybe its a canada thing. I see what you mean its the same diameter as the VLSD but doff bolt pattern

 

It's not a Canada thing. The RS5F50V tranny can house all 4.47, 4.16, 3.89 and 3.82 final gear/mainshafts.

Stock Gearing for all 1995-2001 5-speed maximas:

1st=3.285
2nd=1.850
3rd=1.272
4th=0.954
5th=0.795
Final Drive=3.823

Gearing I used to have from a 2000-2001 VLSD Altima:

1st=3.400
2nd=1.955
3rd=1.272
4th=0.954
5th=0.795
Final Drive=3.823

It should be noted that while my 60 foot was better with these gears, and it felt faster in 1st and 2nd, It actually made me about 0.1 slower in the 1/4 mile, even with a better 60', because of the bigger drop off between 2nd and 3rd gear (the RPMS fall to 4250 instead of 4500, so it widens 2-3 gear spacing: bad thing).

Gearing I will use:
1st=3.285
2nd=1.850
3rd=1.272
4th=0.954
5th=0.740
Final Drive: 4.471

Basically the same as stock, except for the FD and a taller 5th gear from a Stanza and 93-99 Altima to lower Highway cruising RPMs.

 

That is my transmission open. It's the original 1995 VLSD differencial (notice the big bearing on top) with the stock FD. 16 bolts. The 4.47 FD looks exactly the same, except it has 10 bolts. The mainshaft that matches is a perfect fit in the 50V casing.

I even went so far as to remove the 3.82 gear, place the 4.47 gear on the differencial, and put the differencial in the casing with the gear on it and the corresponding 4.47 mainshaft. It spins perfectly, the mainshaft bearing is identical. The ONLY problem is 10 bolts VS 16 bolts.

Also the AWD Axxess has the same 1-2-3-4-5 gearing as 5-speed maximas.

 

I have the whole gear set here from the axxess....i noticed they are even more similar then the altima 5spd is (i have 2 sets of those too)

 

:....

 

Do you have a 5-speed VLSD Altima differencial? It should have 10 bolts. And if it does, the 4.47 gear will fit, and you'll be able to use that too in your 1st gen Altima all motor VQ35 built up.

The older Altimas have less agressive 3rd and 5th gears:

93-99 Altimas:
1st=3.285
2nd=1.850
3rd=1.206
4th=0.954
5th=0.740
Final Drive=3.650, 3.823 or 3.895 depending on years/model.

 

I haven't figured out how to completely manipulate gears yet in cartest, but a quick check on the mustang netted 1 tenth and 2 mph. I may need to adjust shift times since it assumes more shift = more wasted time. Wheel spin could be a factor also.

Having first and second from the altima showed my car losing almost 1 tenth.

 

I got .2s and 1.5mph on a stock 89 302 with a 3.73 vs stock 3.08.

 

Seems like it's overly conservative.

 

It's probably just that I don't have a very accurate model of a 5.0 and I didn't do anything to alter the 60' times to reflect real world 60' times because I don't know what sort of 60's they can pull stock and with the gear.

 

I know someone who has only slicks and 3.73's (everything else stock) and he pulls 1.85's and 13.9's. They are capable of 1.8's on street tires.

 

It was right about that one. Here is a little match up:

Best run on Street Tires with the original (Maxima) first 2 gears (3.28 and 1.85):

60' = 2.137
1/8 = 8.885
1/4 = 13.680
MPH: 104.544

Now, the best run on Street Tires with the more aggressive (Altima) first 2 gears (3.40 and 1.95):

60' = 2.062
1/8 = 8.975
1/4 = 13.792
MPH: 105.268

Wierd, huh? Better 60 foot, worse 1/8 mile, worse 1/4 mile, and better trap speed.

 

BTW Neal, do you remember what model you used when you ran that simulation of the 4.4:1 gear vs the 3.8:1 gear? Your old '96?

 

no i used your car i think

 

I think I got it; you ride out 3rd gear in the 1/4, right? That may be why it "gives so little". Because it forces you to shift into 4th. In my case it's moot because I always shift into 4th, I can't ride out 3rd, not at nearly 106 mph. Instead, it helps me take advantage of the entire 4th gear.

 

thats not bad, and you could of done better with that trap. when i trap 106mph i run a 13.5 or better. it seems like you picked up a lot of speed later on down the line.

 

I know. Like I said I usually pull 2.0's on street tires, my last time prior to this I pulled a 2.02 60', so if it had been a low 2.0 instead of a mid 2.2 it would probably have been a solid 13.5 or 13.4. But that was way back in early September. Now, the track is way too damn cold to pull anything decent. The top end is very strong for an N/A car with the stock ECU though.

 

Sorry for the late response, been away from the org for a little while.....Very nice traps!!!