Nemesis415

I have a 94 del sol SI. When my car is parked and i first start the motor and if the first gear i shift into is reverse, the tranny makes a loud grinding noise for a second and then it slips into reverse. After in reverse no more grinding, just at the point where i am pulling the shift **** down towards reverse. When it is grinding, i can feel the vibrations in the shift ****. This same problem happens sometimes when shifting into 5th while driving, ESPECIALLY at higher RPMS. It keeps happening even though i release the clutch all the way. Can someone please tell me what might be the cause of this. im planning on changing my clutch, TOB, and my ISB but before i do it, i would like to know if there are other things to do to solve my problem while i have the tranny pulled out so i dont have to go throught the hassel of pulling it out again. please help. thanks

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nemesis415 &raquo;</TD></TR><TR><TD CLASS="quote">I have a 94 del sol SI. When my car is parked and i first start the motor and if the first gear i shift into is reverse, the tranny makes a loud grinding noise for a second and then it slips into reverse.</TD></TR></TABLE>

Thats normal, reverse isn't synchronized like the forward gears are. You should shift into a forward gear first and then into reverse to prevent this grinding. 5th shouldn't grind though, may be a syncro issue.

EJ8_Enthusiast

yeah, I've learned to always shift into fourth gear before reverse, solves the problem.

Nemesis415

so is there anything i should look fo when i pull out my tranny?
or maybe even replace?

Nemesis415

so is there anything i should look fo when i pull out my tranny?
or maybe even replace?

Syndacate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94EG8 &raquo;</TD></TR><TR><TD CLASS="quote">

Thats normal, reverse isn't synchronized like the forward gears are. You should shift into a forward gear first and then into reverse to prevent this grinding. 5th shouldn't grind though, may be a syncro issue.</TD></TR></TABLE>

Yeah, you should shift into 4th to synchronize it before dropping it into reverse.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ8_Enthusiast &raquo;</TD></TR><TR><TD CLASS="quote">yeah, I've learned to always shift into fourth gear before reverse, solves the problem. </TD></TR></TABLE>



@ OP:
You shouldn't be putting it into reverse b4 1st, that's counterintuitive, if you need to back up to get out of wherever you're parked, put it in a high forward gear (ie. 4th), then put it in reverse.

I would say a synchro issue, but reverse doesn't have synchros, but the weird thing is that 5th and reverse are on the same countershaft in the trans - so I wonder if it's a possible problem with that. Not sure, not a trans expert.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nemesis415 &raquo;</TD></TR><TR><TD CLASS="quote">shifting into 5th while driving, ESPECIALLY at higher RPMS.</TD></TR></TABLE>

Question though:
I'm dying to know where you're shifting outta "high RPM" in 4th. I'm assuming that puts you around 150mph?

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">Question though:
I'm dying to know where you're shifting outta "high RPM" in 4th. I'm assuming that puts you around 150mph?</TD></TR></TABLE>

DX tranny would put it at around 120mph, shifting at 7,200RPM, Si tranny should be even earlier. I was young and foolish once.

sageuvagony

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94EG8 &raquo;</TD></TR><TR><TD CLASS="quote">

DX tranny would put it at around 120mph, shifting at 7,200RPM, Si tranny should be even earlier. I was young and foolish once.</TD></TR></TABLE>

Hmm... My DX tranny hits/maxes out at 110mph in 3rd gear, and that's at 6,800 RPM.

My D16Y7+DX tranny maxes like this :

1st = 38mph @ 6,800 RPM
2nd = 70mph @ 6,800 RPM
3rd = 110mph @ 6,800 RPM
4th = cuts off at 118 MPH because of speed governer, but when it cuts its like at 5,800 - 5,900 RPM, and still would continue picking up if the governer weren't there. No way 4th could max out at 120. Maybe at least 130.

I also just saw another car on youtube with stock D16Y7 as well and had the same exact numbers as I do



Modified by sageuvagony at 1:24 PM 8/16/2008

94EG8

I run a JDM D15B vtec in a '94 sedan with a DX tranny, 4th will take me to 197km/h so right around 120mph, thats at around 7000 - 7200 rpm, who knows hows accurate the stock gauges are at that speed and rpm. It essentially tops out at 197km/h it doesn't cut out, thats just as fast it will go, 5th just lowers the rpms from 7 grand to about 5 grand. I wound it out a couple of times after i swapped the engine in on some dark deserted straight roads late at night.

Nemesis415

well right now i have bad bearings and i try to keep away from red lining it. when i said high rpms i meant at around 6000. but everytime i go that high, my 5th grinds then pops in. it doesnt sound pleasant...