i hav a JDM gsr gearbox, i think it's a S80 wit lsd, n when i'm racin when i launch in first @ 8200rpms, it falls to like 5800rpms, i hav in a ACT racing clutch n streetlite flywheel 10.5lb, n i to play ketch-up....
wats causin dat is it to ratios or something else?

 

When you are not moving, VTEC will not engage, so don't expect full power. Your axles hate you. I don't see how you are getting traction anyway with a launch that high.

 

sorry
i mean when i shift to second it falls, i not launchin dat high, dats my shift point....

 

In that case it is normal as determined by the ratios.

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

 

Yea when you go to launch try it out at like 4000 rpms. I had great succes launching there when my car was stock and LS cars with bolt ons.

 

don't race?

id give helpful information but you dont seem to be too intelegent by the way your wording.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by type_r_teggy &raquo;</TD></TR><TR><TD CLASS="quote">i hav a JDM gsr gearbox, i think it's a S80 wit lsd, n when i'm racin when i launch in first @ 8200rpms, it falls to like 5800rpms, i hav in a ACT racing clutch n streetlite flywheel 10.5lb, n i to play ketch-up....
wats causin dat is it to ratios or something else?</TD></TR></TABLE>

?!!!!!!!!!!! Where do you buy your weed?!!

Anyway, if you're shifting from 8200 in 1st , the RPM will fall to around 5500 or so in 2nd unless you're shifting hard enough to spin the tires in 2nd.

GSR gear ratios suck ***. Buy a B16 or ITR trans. You'll be much happier.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by type_r_teggy &raquo;</TD></TR><TR><TD CLASS="quote">i hav a JDM gsr gearbox, i think it's a S80 wit lsd, n when i'm racin when i launch in first @ 8200rpms, it falls to like 5800rpms, i hav in a ACT racing clutch n streetlite flywheel 10.5lb, n i to play ketch-up....
wats causin dat is it to ratios or something else?</TD></TR></TABLE>

from now on please use proper spoken and written english...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by what gsr &raquo;</TD></TR><TR><TD CLASS="quote">don't race?

id give helpful information but you dont seem to be too intelegent by the way your wording. </TD></TR></TABLE>


And I'm sure you meant to spell "intelligent" that way right?

 

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


And I'm sure you meant to spell "intelligent" that way right?

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

lol I love when that happens. I'm glad I have perfect grammar. Also, I'm very good looking.

 

**Sprays Extinguisher**

Stop it. Focus people. OP is from Trinidad.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by what gsr &raquo;</TD></TR><TR><TD CLASS="quote">don't race?

id give helpful information but you dont seem to be too intelegent by the way your wording. </TD></TR></TABLE>

People might say the same for you for starting a flame in the Integra forum.

 

I &lt;3 my ITR transmission.
Some people say it's too short for drag racing, but with my modest 250WHP setup I'm at about 7K, 4th gear, at the end of the 1/4 mile. Any power will probably require me to get larger wheels or switch back to the GSR tranny.
What is WTK? Want To Kill?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thewrai6th &raquo;</TD></TR><TR><TD CLASS="quote">I &lt;3 my ITR transmission.
Some people say it's too short for drag racing, but with my modest 250WHP setup I'm at about 7K, 4th gear, at the end of the 1/4 mile. Any power will probably require me to get larger wheels or switch back to the GSR tranny.
What is WTK? Want To Kill?</TD></TR></TABLE>

Want to know.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thewrai6th &raquo;</TD></TR><TR><TD CLASS="quote">I &lt;3 my ITR transmission.
Some people say it's too short for drag racing, but with my modest 250WHP setup I'm at about 7K, 4th gear, at the end of the 1/4 mile. Any power will probably require me to get larger wheels or switch back to the GSR tranny.
What is WTK? Want To Kill?</TD></TR></TABLE>

lol yea, want to kill...i dont know why anyone would change back to gsr tranny. itr tranny and boost+traction is deadly...

 

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

lol yea, want to kill...i dont know why anyone would change back to gsr tranny. itr tranny and boost+traction is deadly...</TD></TR></TABLE>
LOL I thought he was mad at the GSR tranny and wanted to kill it :D
I guess the reasoning behind the swtich back to GSR would be to keep from shifting to 5th during a 1/4 mile run... anything over 115mph and you're gonna have to shift to 5th. Of course, an LSD install would be required for it to make sense.
As far as bogging the 2nd gear shift, the ITR tranny will put you roughly 200RPM higher than the GSR at the same 8200 shift, landing you at 5200 or so, instead of 5000. These numbers are not exact, just estimates.

Edit: Here is a good resource for the OP: http://www.fatboyraceworks.com/gears/

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thewrai6th &raquo;</TD></TR><TR><TD CLASS="quote">
LOL I thought he was mad at the GSR tranny and wanted to kill it :D
I guess the reasoning behind the swtich back to GSR would be to keep from shifting to 5th during a 1/4 mile run... anything over 115mph and you're gonna have to shift to 5th. Of course, an LSD install would be required for it to make sense.
As far as bogging the 2nd gear shift, the ITR tranny will put you roughly 200RPM higher than the GSR at the same 8200 shift, landing you at 5200 or so, instead of 5000. These numbers are not exact, just estimates.

Edit: Here is a good resource for the OP: http://www.fatboyraceworks.com/gears/</TD></TR></TABLE>

The ITR trans will put you at around 6k or so in 2nd. Otherwise, it would fall out of VTEC.

 

vtec is 4400... You mean IAB's? They give more kick than the smooth VTEC engagement.
Edit: Nevermind, I'm sure you meant B18C5 vtec, since that is what the tranny was designed for.


Modified by thewrai6th at 12:41 PM 2/28/2008

 

Here are some calculations I did:
B18C5 rev limit, VTEC 5700:

JDM98-01 ITR top speed in 1st: 38.37mph @8500 RPM
JDM98-01 ITR RPM in 2nd @ 38.37mph: 5540 RPM

USDM ITR top speed in 1st: 41.72 @8500 RPM
USDM ITR RPM in 2nd @ 41.73: 5540 RPM

GSR top speed in 1st: 41.72 @8500 RPM
GSR RPM in 2nd @ 41.72: 5000 RPM

B18C1 rev limit, VTEC 4400, IAB at 5750:

JDM98-01 ITR top speed in 1st: 37.01 @8200 RPM
JDM98-01 ITR RPM in 2nd @ 37.01mph: 5345 RPM

USDM ITR top speed in 1st: 40.25 @8200 RPM
USDM ITR RPM in 2nd @ 40.25: 5345 RPM

GSR top speed in 1st: 40.25mph @8200 RPM
GSR RPM in 2nd @ 40.26mph: 4825

Hopefully these will help the OP.


Modified by thewrai6th at 2:28 PM 2/28/2008


Modified by thewrai6th at 2:48 PM 2/28/2008

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thewrai6th &raquo;</TD></TR><TR><TD CLASS="quote">Here are some calculations I did:
B18C5 rev limit, VTEC 5700:

ITR top speed in 1st: 38.37mph @8500 RPM
ITR RPM in 2nd @ 38.37mph: 5540 RPM

GSR top speed in 1st: 41.72 @8500 RPM
GSR RPM in 2nd @ 41.72: 5000 RPM</TD></TR></TABLE>

Why would the GSR and ITR have different first gear speeds? For the USDM versions, both have identical ratios and final drives.

 

Fixed.


Modified by thewrai6th at 2:48 PM 2/28/2008

 

sorry
i mean when i shift to second it falls, i not launchin dat high, dats my shift point....

 

You should technically dip to ~5400 with a strong clutch and no slipping. If you're only dipping to 5800, then your clutch is slipping a bit.
Either way, there is not much you can do about your shift points without switching or fully building a custom tranny.
http://www.gearspeed.com can do it.