I have posted a few questions that you guys have been really cool...

This one maybe pushing it.

Back ground. I've AutoX quite alot the past 3 years. Took 2nd at the SCCA Tour event in Atlanta in STS2 (my first big event). I also just did my first track day and loved it. Needless to say I wont be too conserned about Autox as much any more. So I went out a picked up a 93 Integra RS shell, supper cheap to build into a track toy. I will be picking up a 99 LS motor with just under 50k on it and will be rebuilding my stock YS1 tranny as it has over 200k on it.

My question is a 4.7 FD a big gain, this is going from the stock 4.4???

I contacted the company that builds the 4.7 for the YS and its like $1250. I like to do things once so if its a big gain I'll do it.. But, if not that $ can be used for more track days.

So any input on this will help me plan the rest of the build.

Thanx much

Michael

 

You can get the JDM ITR FD which is 4.785 for less than half the $1250 you were quoted for the 4.7. I'm not into road racing yet but I'd think the gearing would be very nice with a stock LS gearset. With a 4.785 FD every gear ends up slightly shorter than USDM ITR except for 5th.

 

This is the YS1 cable tranny I dont think any of the Hydro tranny gear sets will work...

I maybe wrong???

 

Who makes this? Does it only fit the YS1 cable trans or does it fit other B Series cable trans?

Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vbspec &raquo;</TD></TR><TR><TD CLASS="quote">This is the YS1 cable tranny I dont think any of the Hydro tranny gear sets will work...

I maybe wrong???</TD></TR></TABLE>
Oooh shoot I saw 99 motor and automatically ignored the entire sentence about the existing YS1 tranny. So yeah I'm not sure the JDM ITR FD would work (doubt it), but as long as the YS1 gears are pretty similar, I'd imagine a 4.7 FD would be fantastic on the track... maybe even shorter would be better depending on your redline.

 

not sure about the gain, but you can check out what the effect it will have on your shif points here:

http://nonsense.netfirms.com/speed.html

If you have gran turismo 3 or 4 you can also plug in your ratios to a similar car and see what happens. It's actually pretty good at it's trans calculations....

 

Not looking for any "Gain" other than benifits like a better pull up the hill at VIR N.

And the # is on ATS's site http://www.a-t-s-usa.com/ats-p...shtml

And it is for the cable YS1 tranny.

I assume being kinda green at this I'll just use the money to finish the car and get on track. I may see about picking up the FD and maybe a diff next year..

RJ you can delete this thread...

 

Is this for the Integra?

Swap in a hydro tranny More gear options

 

Umm I dropped in a S4C final drive into my LS YS1 casing. I got about 5mm less clearnace.

http://www.ff-squad.com/tech/temp/Bgears.htm

4.2 has 64 teeth
4.4 has 66 teeth -5 mm clearance to casing over 4.2 (IIRC from my measurement)
4.7 has 67 teeth

So it seems the ITR FD being only a tooth bigger can easily fit into the YS1 casing. But if you are LS YS1 -- you will need to match up the gearing across the main and counter shafts correctly. I think for ITR FD you need 1st gear, so that's taken care of. But you may need to check if 2nd needs to be matched as well.
3-5 are not cast into the shafts so you won't need to match these up. But I would just build it w/ all ITR gearing ratios at this point.

Oh and BTW, the ITR FD will not necessarily bolt on to any 4.2/4.4 diff.
So you will need a diff that accepts the 4.7 FD.

Good luck!

p.s. I am rebuilding a LS YS1 with ITR gearing + 4.7 in a few months.

 

I can't speak for the Integra but I have put several 4.7s into CRXs that were 4.2s stock. This is a bigger jump than the 4.4 to 4.7 but I have always felt that if you want to run up front in an ITA CRX, a final drive and a good LSD were completely mandatory, period. The difference coming out of corners was very noticable and worth the $1250 I pai each time if you want to run up front.

 

Danm I just looked at that gear chart and I have a 4.2 FD not a 4.4 ****!!!

This thing is going to break the bank

 

Also with the stock diff, a 4.4/4.7/4.9 wont bolt up to it..... the bolt pattern for the gear is different.

PM 'hracer' he mentioned that another racer up north was selling final drive sets for the 92-93 integras.

 

You can run the jdm 4.78 Final in a cable ys1, you do have to switch to the 94 and up gsr or type R diff, if you are going to run a limited slip this is no big deal just order the one to fit the gsr. We run this set up in our 92 Integra that we run in ITA and on our tracks, Laguna Seca, Sears Point and Thunder Hill it makes a huge difference. You should be able to find the JDM final drive though http://gear-speed.com/ Ask for James. Last time I checked they were in the $ 500. range, If you need help let me know.


Modified by itaintegra52 at 4:03 AM 8/16/2005

 

nothing

 

I will look into this thankyou very much!!!!!

And I may drop you an IM if I have any questions...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vbspec &raquo;</TD></TR><TR><TD CLASS="quote">nothing</TD></TR></TABLE>

?

 

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

?</TD></TR></TABLE>

I was tired and wrote a big long bitch about how just this engine and tranny would cost almost as much as an ITR swap, which it may come close too. And if this is just a track toy and not a "Race car" why not just swap in a more powerfull engine, with a good tranny.....

I dont know yet my brain hurts thinking about this.

I'm at the point where I think I need to build the enging and tranny close to stock, and build the suspension like I want and get on the track. Seat time seat time seat time.

Hell I may be able to do the diff and FD later like next year.... **** I've done one track event......

Thank you guys, I have taken a ton of notes so that ever i decide I can look back on all the shared info...

 

Forget the 4.7 for now and just go get a VTEC YS1 or a VTEC hydro and swap its guts into your cable casing. A 4.4 diff and better gears will still make you much happier.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonsense &raquo;</TD></TR><TR><TD CLASS="quote">not sure about the gain, but you can check out what the effect it will have on your shif points here:

http://nonsense.netfirms.com/speed.html

If you have gran turismo 3 or 4 you can also plug in your ratios to a similar car and see what happens. It's actually pretty good at it's trans calculations....</TD></TR></TABLE>

That calculator is lame. Use mine:

http://www.fatboyraceworks.com/gears/

Plus it has the 'grant turismo' style graphs. The problem with using GT is often it won't let you do the exact gear ratios that you want. Usually doesn't go up high enough on the FD.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rotten &raquo;</TD></TR><TR><TD CLASS="quote">
That calculator is lame. Use mine:
</TD></TR></TABLE>

yeah yeah .... but did yours take you less than an hour to write? I did that a few years ago when I was taking a perl class. I also have the reverse of it ....

http://nonsense.netfirms.com/speed2.html

Yours is nice, I'll have to bookmark it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vbspec &raquo;</TD></TR><TR><TD CLASS="quote">Not looking for any "Gain" other than benifits like a better pull up the hill at VIR N.</TD></TR></TABLE>

Turn in earlier.

 

So your saying Hydro guts will fit a cable case? or is that just the YS1 case?

Too bad my Quaife is already for a cable. Damm

 

Carry more speed in, throwing it against the hill like well-cooked spaghetti against a wall, it'll stick. It's cheaper too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rex_boy &raquo;</TD></TR><TR><TD CLASS="quote">So your saying Hydro guts will fit a cable case? or is that just the YS1 case?Too bad my Quaife is already for a cable. Damm </TD></TR></TABLE>

Q1: its a complicated answer. let's just say it can be done, but it may take a lot of parts for the older cable units. The YS1 (both kinds) can easily accept hydro shafts and diffs though. The S1/Y1/etc older stuff is more complicated.

Q2: YS1 should accept any hydro parts (in fact some B17 YS1 gears are same PNs as other hydro VTEC trannies)

Is your Quaiffe for 4.2 final drive? That would suck...

 

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

Turn in earlier.

</TD></TR></TABLE>

Tell that to RJ I kept turning in too early on 7 anyway