I just went to moros a week ago and only was able to get a 14.4 with a 60ft time of 2.290 with 4.77 gears. I received very similar times last year when I was stock. Im looking at the quarter-mile section in the street encounter forum and noticed some of the time slips.

I know with 4.77 gears, you have that extra shift on 5th gear which could reduce your time. but in most of the slips with mods or even stock, other s2k owners got 2.1 to 2.2 in the 60ft and endedup with a quarter-mile time of 13.6-14.0. The big difference was their mph at the 1/8. I mostly in all 4 runs I did was around 77. Others stock and modded with 4.56 were around 80mph. Shouldn't with 4.77, it be eaiser to have a time around 80mph since compared to stock their isn't any extra shifting to get to 80mph. I think my shifting is normal to good. How could some stock cars receive a 60ft time of 2.3-2.4 stock and still be able to obtain a 13.8 to 14.0 in the quarter-mile time.

Are their any advantages to the 4.77 gears. I always belived and read in post that it would be beneficial even with the extra shift in the quarter mile compared to 4.56 since you would be ahead of the 4.56 on each shift since you are using more torque in the lower end. Im starting to doubt the effects on the 4.77 due to the recent results.

Here is the link to my results at the track:
https://www.s2ki.com/forums/index.php?showtopic=389458

As you can see in the link, my mph in all of them are at 77pmh. It seems like it didnt matter if I was able to get a 60ft of 2.290 or 2.5 60ft since the mph were practically the same. Is the mph due to slow shifting. Could it be the clutch (has 75k miles on it) may be not grabbing the added low end torque the car puts down now. Spark Plugs?? Im trying to determine if the gears the the issue or if its something with the car. Even with normal shifting, I was expecting to get a better time compared to last year but my time slips from last year look pretty similar. If you think its the shifting, does that mean if you have two cars, same driver, one is stock and one has 4.77 gears or even 4.56 gears and they shift the same, that the stock car would keep up with those two cars?

Thanks for any help, just trying to figure this thing out.

 

The only place you need to look to is your own driving. Honestly that's it. It has nothing to do with the extra shift (a 4.77 can run the 1/4 mile in the same time as a 4.57).

a 2.29 60' time is really bad. you should be 2.0-2.1.

your problems aren't in your clutch, or spark plugs, or gears, or anything. it's just your driving. you need more practice.

no, the 4.77 and 4.57 will walk away, given equal drivers. you may not be used to the gears yet either.

 

But there are cars in the quarter-mile post with a 2.2-2.3 60ft time running 13.6-13.9 with gears. My shifting hasn't changed from last year. And even if it has, it would it make a .8 sec difference since I was able to get a 14.4 last year stock. Winsconsin, whats the best time a 4.77 geared car has run. I know many have ran with 4.57, but I havent seen much about 4.77.
And is shifting the only explination regarding the slow mph of 77mph time on the 1/8.

I just dont see how shifting faster can get a .6 to .8 sec drop compared to a similar 60ft 2.2 time.

 

What are your trap speeds at the end of the quarter? Sounds like you are having a hard time hooking up off the line. How are your launches, meaning, are you bogging or producing a lot of wheel spin?

I am going to install the 4.77s as well, but I went to the track stock and put on a spin show until I adjusted my launch; I am used to launching awd cars. Good luck.

edit: I just looked at the other post. Does a stock s2000 trap at 98~ in the quarter at its best?

 

Trap speeds didnt exceet 98pmh.. If I was looking from the crowd and saw someone driving my car, I would have thought it was stock. I think my highest trp speed was 98.74mph. I did the first two runs have a hard time hooking up. I tried a recommendation of a post to drop the clutch at 6k and just accelerate until it grabs but that didnt worrk that good. I was peeling out till around 32mph. The best run I had I let it off slowly from around 5k and it peeled out just about a sec and then went off. I thought it was at least a high 13 to low 14 run since it was much better than the others, but didn't happen. Never really bogged. I try to avoid the bogging since they advised it affects the differential. Mainly wheelspin except for the my last run which wasn't much wheelspin

 

This is where you're wrong. A stock geared car and a 4.57 car CAN achieve 80 mph in 3rd gear. A 4.77 car needs to go into 4th.

I've stated this before but it's worth doing again. Any advantage of "gears" will be defeated if you take too long to shift, assuming that you are getting up into speeds that require extra shifts.

Video yourself doing one of your typical "fast" shifts, then go replay it in slow-mo and count the frames if you know how many frames per second your camera records at. Then you'll know if you take more than 1/2 second (and how much more) to complete one shift. If you do, then there goes all your gear advantage.
A 1/2 second in a 1/4 mile drag race is HUGE! You can so easily lose that edge if you take more than 1/2 second the shift.

 

What is a fast shift, like taking .25 on every shift. Isnt that close to like power shifting. How can you achieve a shift like that, I guess when you cluch it, you just drop the clutch like in a lanch instead of moving your foot back.

I know what your point is xviper about shifting, but I acheived the same time stock as with the 4.77. My shifting to me is the same, so I should have at least improved a couple.? on the quarter-mile judging that gearing helps you accelerate faster than a stock s2k.

 

Xviper and Winsconsin, I used the gear calculator regarding the 4.77 and it stated that on 4th gear, the 4.77 can reach 99.3mph. I have 245/50/16 in the rear now, a bit larger than stock so lets say it can reach 100mph, then that would not require me to shift to 5th gear since I could hit 100. My mph are around 98mph so its not reaching its potential mph for that gear. So the extra shift isn't affecting me at that point.

 

Maybe a Shifter Beeper could help?
Makes you shift at the right revs => not losing any valuable revs => hp => accelaration.

 

The advantages are in it's multiplied torque effect. Do you not notice that you accellerate faster through each gear compared to a stock S2000?, thus giving you the ability to quickly travel through the torque curve based on your quicker Revs, in turn giving you more trust in accelleration on each and every gear you use. The slow down is in your shifting as others have said.

I can testify for the gears. I've launched against 350z, RX8s, and G35s and the gears pull stronger through each gear than what I could do with the stock final drive.