Hello,

Ive done a search on the topic but im still a little confused about several things:

1) Is it a waste to perform this mod if I am not planning on doing clutch and flywheel?

2) How much is top speed affected? Ive read several posts by people saying they didnt really notice that much of a change in top speed but does anyone have an actual figure? Ive read 134, 145, etc....

3) Is the JDM FD the way to go or ATS? From what I understood the ATS is shorter than the JDM.

I apologize if this has been covered before but any feedback would be appreciated.

Thanks,

Steve

 

I can't see where changing the clutch and flywheel can affect your decision to change the final drive, but whatever floats your boat. Top speed will be affected according to which final drive you use. Naturally the JDM final drive will cause you to lose some top end speed, and cost you some gas milage due to high rpms. But it won't affect it quite as great as a 4.9 final drive will. And naturally the JDM final drive will be much more extreme than say a 4.6 (I don't know if anyone even makes a 4.6, but just for reference sake). Which one you choose depends upon your goals.

 

for daily driving, id say if you HAD to get a FD, the JDM 4.7 is the way to go.

 

Thanks for the response.

I guess what im getting at is what approx is going to be the RPM difference between each shift?

 

Try this:

http://www.a-t-s-usa.com/ats-p...shtml

 

1) IMO, no its not a waste of time to do a final drive mod even if you arent doing a clutch and a flywheel (but i'd do it since the tranny will be apart from the motor) but if you cant do it yourself or have a friend do it, then it might be pretty costly

2) Top speed will be affected, but depending on your redline, tranny and size of tires is what will make it variate

3) Depends on how much money you have to spend, if you dont mind your RPM's higher with the higher FD, but ATS isnt the only company who makes the 4.9 FD

I for one just ordered the JDM FD, and am doing a clutch and flywheel since my tranny is gonna be pulled apart from my motor, besides..my stock clutch is starting to slip a little, and holds me back from running a decent time at the track

 

1) Not a waste at all, especially if your ITR parts are in great condition, you can sell them on the second hand market to make some money back from buying a lightweight flywheel and more aggressive clutch... if you do want to "upgrade".

2) Top speed is effected a lot with just a swap from stock 4.4 to the TS 4.9 fd but ask yourself is top speed important and how often do you get there?

3) I chose the ATS 4.9 and have been overwhelmed by how it transformed the car into a torquey feeling setup, I love it, one of the best mods done yet. But it does rev about 5000 rpm on the highway around 80mph so its not for everyone...

 

Search, Research and so on and so forth.

1) Yes it's worth it if it's what you want. a Light Weight Flywheel is a great compliment though.

2) Read this post entirely: https://honda-tech.com/zerothread?id=746641

3) Again, refer to the same post: https://honda-tech.com/zerothread?id=746641 And make sure to read all 3 pages, take a long look at the graphs and use the posted gearing calculators.

No need to appologize, it has been covered before, both many times and in depth. The above post just happened to be the most recent.

Best of luck, and be sure to research till you are sure. It would also be a great idea if you could to drive a car equipped with either the ATS or JDM FD.

 

I drive the JDM tranny with 4.785 final and LOVE IT!

<-----------Never looking back.

 

I understand his dilemma. I don't wanna open up my tranny 3 individual times. I'm lazy =p

I've heard nothing bad from people with the ATS 4.928. THen again, I've never heard anything bad from people with the JDM 4.785. Your decision.

 

If you're going to do it, go with the ATS. HIGHLY recommended!!!

 

I ride in Brads R alot, and i see how the car is. I will tell you its not a waste. Well worth the money.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XenonDepot &raquo;</TD></TR><TR><TD CLASS="quote">1) Is it a waste to perform this mod if I am not planning on doing clutch and flywheel?</TD></TR></TABLE>

It's not a waste, if you want the mod. The only thing that is relevant regarding the clutch and flywheel is that if you are planning to do those other parts at some point as well, you may as well do it at the same time as the FD, to save labor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XenonDepot &raquo;</TD></TR><TR><TD CLASS="quote">Is the JDM FD the way to go or ATS? From what I understood the ATS is shorter than the JDM.</TD></TR></TABLE>

Think of the JDM as partway between stock and the ATS.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XenonDepot &raquo;</TD></TR><TR><TD CLASS="quote">I guess what im getting at is what approx is going to be the RPM difference between each shift?</TD></TR></TABLE>

Changing the FD has no effect on the RPM difference when shifting.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Owen_the_soyboy &raquo;</TD></TR><TR><TD CLASS="quote">ask yourself is top speed important and how often do you get there?</TD></TR></TABLE>

Also do your homework (follow those links), and ask yourself whether you do a lot of driving at speeds where the stock FD is faster than the ATS 4.9, rather than the speeds where the 4.9 is faster. And whether the overall difference is sufficient for the cost of the part and especially the time or cost of the labor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">2) Read this post entirely: https://honda-tech.com/zerothread?id=746641</TD></TR></TABLE>

Also this one as well: https://honda-tech.com/zerothread?id=241652

 

not to jack the thread, but a quick question. I hardley ever drive a freeway; maybe once a week and i drag race my R and want to get into auto crossing if they ever open up the local ones at arco again. from what info i picked up it would seem like the ATS 4.9 fd would be for me correct?

 

Wow,

Thanks for the responses. Ive read over the threads you guys suggested and I think that for my needs I should go with the JDM final drive.

Next question to you guys would be where is the best place to pick up this stuff?

Thanks,

Steve

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XenonDepot &raquo;</TD></TR><TR><TD CLASS="quote">
Next question to you guys would be where is the best place to pick up this stuff?
</TD></TR></TABLE>

i second this question

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeRPaul &raquo;</TD></TR><TR><TD CLASS="quote">

i second this question</TD></TR></TABLE>

For the ATS FD I suggest either Direct from Yasu at ATS USA,

Or

From Dave at R&D Motorsports.

Both of their links are in my Sig at the bottom.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeRPaul &raquo;</TD></TR><TR><TD CLASS="quote">not to jack the thread, but a quick question. I hardley ever drive a freeway; maybe once a week and i drag race my R and want to get into auto crossing if they ever open up the local ones at arco again. from what info i picked up it would seem like the ATS 4.9 fd would be for me correct?</TD></TR></TABLE>


yes.

 

Since you are in Canada you may want to pick one up locally. I got mine from a shop in Alberta.

http://www.polepositionproducts.com/

If you are driving on the street the JDM is great. The only downside for me is that at Mosport I almost run out of gears. Lucky for me I can rev to 9000 rpm.

AW

PS. I got my HID's from XD for my old M roadster. I sold that car and put the lights in my integra and they have been great.

 

AW,

I remember you man!!!! That was a seriously long time ago!!

Thanks for the advice!

Steve

 

I have the ATS 4.929.

a) My top speed at revv limit in 5th gear is 145mph indicated on my speedo on the dyno.

b) My gas mileage still hovers around 28mpg, and 70% of my driving is on the highway at 4500rpms. You must realize that RPMS have VERY LITTLE to do with gas mileage, its the CHANGE in RPMs that kill gas mileage, accelerating...If you wanted to, you can cruise at 8000 rpms, and have better gas mileage than someone who gasses it to 2k rpms, lets the rpms fall to 1k, and then gas back to 2k for the same distance.

c) Is it worth doing it all at once (in respect to clutch and fw)? The only loss I see is 2 quarts of MTF. Thats if you have the mechanical ability to drop your transmission without paying someone. To add a little, I dropped my tranny and drove it to AJ Racing where they installed the FD for $150CAD...so high installation costs is definately not a problem.

d) Is it worth every penny to have a shorter FD? HELL YEA!

 

Been thinking about getting the ATS 4.9 FD for a while now and most likely picking up a flywheel and clutch at the same time. Leaning towards the TODA flywheel, but not definate about the clutch. I know some clutches are pretty harsh on this flywheel. What clutch would some of you recommend? Would the ACT Extreme clutch be fine? Car is mostly stock.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR00-1200 &raquo;</TD></TR><TR><TD CLASS="quote">Been thinking about getting the ATS 4.9 FD for a while now and most likely picking up a flywheel and clutch at the same time. Leaning towards the TODA flywheel, but not definate about the clutch. I know some clutches are pretty harsh on this flywheel. What clutch would some of you recommend? Would the ACT Extreme clutch be fine? Car is mostly stock.</TD></TR></TABLE>

I'm using the Fidanza 6.5lb FW and Exedy OE replacement clutch and that combo is working good. If I were making any more power I'd be using a Clutchmasters Stage 3. The TODA flywheel is a good peice, but overpriced IMO...I picked up my Fidanza for $240 shipped and it has a replaceable friction surface.

 

my car is stock.. intake. Would the clutch master oe clutch be fine for my application.. much much better than stock? I've seen the act extreme clutch and it engages pretty hard. Are these harsh on LW FWs?

 

Actually, light flywheels carry less inertia so you actually have smoother shifts...although you do have to use your clutch a little more from a stop.

The best feature on the clutchmasters disc clutches is the feel, they are barely stiffer than stock, but hold a lot of power.