what causes this?

[Bryan Gillespie]

band adjustment (all the way in,then out 3 turns)
also change fluid and filter

[Bob Verwold]

Originally Posted by Bryan Gillespie

band adjustment (all the way in,then out 3 turns)
also change fluid and filter

70 inch pounds in and 3 1/2 to 4 out is the way I adjust mine........

[BIZMANRACING]

i adjust my low band about a month ago. turned all the way in and then 4 complete turns out. i might add that it was a bitch with the CSI cover over the trans. its a little hard getting the allen head in there.

as for the line pressure being low and increasing the rpms. that might just be the only other thing to try. always some **** for me in the 3rd round. just finished practicing on friday. back to back to back runs just to see what the car would do if it had a good drivier. everything went fine and it repeated. now this.

well it will just have to rest until friday, then will do a little maintenance and put it away again until race day. see, bad thing about race cars is that you just can't take them out into the street and try them out. hell, it would blow the tires out anyway.....lol

[SlickVic]

Carlos, sometimes my trans rocks the car foward or backwards when engaging the trans brake. Ive tried adjusting an still does it. The way i fixed it was just to bring the rpms up a little before i stage. This brings the line pressure up and no rock. The nova also engages the line lock when the transbrake is engaged to keep it from rocking but becomes a pain when backing up w/ a hipster.

[dak]

I had run into this a couple of times when I first started racing ...1st thing I started doing was bringing the idle up 11-1200 RPM..the 2nd was before I would stage I would cycle the brake 3 or 4 times ...just press and release the button...I have no idea if any of those things helped ..maybe it was just a timing thing between going in the beams and applying the brake. but I know that once I started that routine the car never moved ... I still do it today

[Adger Smith]

Rolling forward when you hit the brake has nothing to do with the low gear band adjustment. Low gear band adjustment has everything to do with the timing of the low band dropping out & the High clutches applying. Any one that has really looked at a racepack graph of driveshaft RPM / engine RPM can see if the shift holds low too long or lets it loose causing a flare in engine RPM. Comp racers & savy .90 class racers chase the bump on the graph to get it as smooth at the shift as possible.
The low band is already in full apply when you are rolling forward into the beams. It is line pressure or fluid vol required for a loose reverse clutch pack that makes the car roll forward. The rev clutch pack isn't applying quick enough to lock the tranny up. The cycling of the T brake before the final apply is filling the rev piston cavity with fluid. So when you make the final apply it doesn't take a full load of fluid to move the piston forward to apply the Rev clutches.

[BIZMANRACING]

ADGER

at first i guess i didn't understand your first post. then all the comments about the low band. so the lowband adjustment has nothing to do with my problem at all. that being said now back to my problem

now if i understand you correctly, because this is racing and as soon as i and the other racer are staged we get on the buttom and mat the car. now if i had all the time in the world and say could wait a few secs before i hit the buttom i might not have any problem at all.

but,

because i do its because one i either have a real problem and the trans is going away or i'm lopw on fluid or just a little more rpm to get pump pressure up. all this or some of this and my problem goes away.

that is unless my trans has seen better days. did i get it right.