ok i just bought a type r tranny from a guy but i dunno if its a 98+ jdm spec with 4.7 or just a regular 4.4. the tranny is already installed, by driving it, how can i tell if its really a 4.7 or 4.4 fd?

 

In a few minutes somebody will probably pop in and let you know what you RPM at 60 should be.

 

yea i really needhelp, as far as i kno GSR is at 3k on 5th gear doing 60

 

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

 

http://www.autocrossing.com/cgi-bin/gearcalc.cgi

Try that one as you'll be able to change the values to whatever you is needed.

Like goto the FINAL DRIVE part and enter in your 4.785 final drive with the gearing of the JDM itr tranny and it will give you all the info you need... JDM ITR is pretty much a ITR 1-2-3 and a gsr 4-5 hybrid so you can figure that one out...


Modified by Circuit Star-29 at 10:51 AM 5/14/2006

 

now is this jdm final drive better then our usdm final drives?

 

better for acceleration....

possibly worse for long distance commutes as the revs will obviously be higher.

So yes and no I guess - if you use the R as a daily driver and mind the added NVH.

 

divide the number of teeth on the ring gear and divide it by the number of teeth on the pinion gear. should be like 4.785.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by noopsITR &raquo;</TD></TR><TR><TD CLASS="quote">divide the number of teeth on the ring gear and divide it by the number of teeth on the pinion gear. should be like 4.785.....</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmb18ckid &raquo;</TD></TR><TR><TD CLASS="quote">... the tranny is already installed ...</TD></TR></TABLE>

Here is a run down of the MPH you should be at at around 3500 Rpm w/ a JDM ITR tranny. Assuming you have an overall tire diameter or 23.4 inchs.


Gear ShiftRPM Speed @ 3500 RPM
1st 15.8
2nd 24.2
3rd 34.9
4th 49.2
5th 64.7
RPM in top gear at 70 mph: 3787

 

that link is confusing me.. nobody know what rpm u should be at when youre on 5th gear doing 60 mph?

 

Gear ShiftRPM Speed @ 3500 RPM
1st 15.8
2nd 24.2
3rd 34.9
4th 49.2
5th 64.7
RPM in top gear at 70 mph: 3787


At 60 the gear speed calc says you should be at 3245 rpm, assuming you have a 23.4 inch tire/wheel combined diameter.

How is the link confusing?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Circuit Star-29 &raquo;</TD></TR><TR><TD CLASS="quote">Gear ShiftRPM Speed @ 3500 RPM
1st 15.8
2nd 24.2
3rd 34.9
4th 49.2
5th 64.7
RPM in top gear at 70 mph: 3787


At 60 the gear speed calc says you should be at 3245 rpm, assuming you have a 23.4 inch tire/wheel combined diameter.

How is the link confusing?</TD></TR></TABLE>
awesome man thanks..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmb18ckid &raquo;</TD></TR><TR><TD CLASS="quote">ok i just bought a type r tranny from a guy but i dunno if its a 98+ jdm spec with 4.7 or just a regular 4.4. the tranny is already installed, by driving it, how can i tell if its really a 4.7 or 4.4 fd?</TD></TR></TABLE>

.....just count the teeth.

 

anyone know someone who sells the whole jdm fd kit? NEW

 

Get the 4.9 from ATS

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">Get the 4.9 from ATS </TD></TR></TABLE>

And never look back

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">

And never look back </TD></TR></TABLE>

x2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">.....just count the teeth. </TD></TR></TABLE>

How many on the 4.4? 4.7?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc2.itr &raquo;</TD></TR><TR><TD CLASS="quote">anyone know someone who sells the whole jdm fd kit? NEW</TD></TR></TABLE>
hmotorsonline sells it for 350 plus shipping...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EG6R &raquo;</TD></TR><TR><TD CLASS="quote">

How many on the 4.4? 4.7? </TD></TR></TABLE>

4.4 = 66
4.7 = 67
4.9 = everybody's favorite @ 69