I got a problem with the tranny on my 99 si, it start grinding only on 4th gear, anyone knows what the problem could be?

 

Get a GSR tranny. :D

 

Tranny is on its way out the door, to be blunt. It will only get worse. This can be delayed/alleviated by changing the fluids out to GM's Synchro mesh trans fluid, it may help out your situation, but in no way does it fully solve it. Your eventually going to have to get a new trans or have your current one rebuilt.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hgemsi &raquo;</TD></TR><TR><TD CLASS="quote">Get a GSR tranny. :D</TD></TR></TABLE>

He siad 99 si...
Arent B16 trannys slightly shorter than GSR ones?

 

Like they said youre tranny is going to give out soon..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Ej6mike &raquo;</TD></TR><TR><TD CLASS="quote">
He siad 99 si...
Arent B16 trannys slightly shorter than GSR ones?</TD></TR></TABLE>


Gears? Yeah I believe sooooooooooooooooooooooooooooo

 

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


Gears? Yeah I believe sooooooooooooooooooooooooooooo</TD></TR></TABLE>

Then why would he get a GSR trans? That would be a technical downgrade from his B16 trans

 

GSR Granny = Longer Gears
SI Tranny = Shorter Gears
All US ITR Tranny = Shorter Gears with LSD 4.4fd
98+ JDM ITR Tranny = 99 SI 1, 2nd, 3rd, gsr 4th, 5th, 4.7fd

Some say SI trannies are weaker. Not sure. People like GSR cause a lot of people drag race so longer gears = less time waisted shifting. But personally faster you get to red line = better within reason of course ;p Crazy big final drive and you kill your top speed or end up shifting too many times. Really depends on the motor setup though, n/a or turbo and a few other things of how you will use the car.

As far as the actual question, If it's grinding it's usually a syncro. Either get it replaced and might as well check the rest while you have it open and think about going with an lsd or fd. Or just call it a day and get a whole new tranny depending on how lazy you wanna be

GM syncromesh fluid helps is feel a little better till you fix it also

I'm assuming it's not something like you just ran out of tranny fluid somehow and are grinding because it's dry

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kay_animation &raquo;</TD></TR><TR><TD CLASS="quote"> GM syncromesh fluid helps is feel a little better till you fix it also

I'm assuming it's not something like you just ran out of tranny fluid somehow and are grinding because it's dry </TD></TR></TABLE>

If the tranny were running dry, woudlnt it whine pretty loud?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Ej6mike &raquo;</TD></TR><TR><TD CLASS="quote">

If the tranny were running dry, woudlnt it whine pretty loud?</TD></TR></TABLE>

Depends on how low the fluid is. Different low levels net different results.

 

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

Depends on how low the fluid is. Different low levels net different results.</TD></TR></TABLE>

Years ago, when i busted my y7, fluids were so low, it sounded like a supercharger whining when i drove it, haha.

 

i change the oil about a month ago, i use royal purple 10-30 plus a 1/2 quarter of slick 50 but still grind, i forgot to tell ya i got an lsvtec whit a b16 tranny,