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Discussion Starter #1
hutch-

have a recent rebuilt 400 w/hipster trans brake,followed all the direction
to install the brake, but only have 90 psi at idle in any gear.
called tech at ATD (HIPSTER). they suggested the booster valve was
stuck or missing. pulled trans. looked at pump,pressue valve and booster
seen to be ok. did have an issue with the reverse servo didn't want to
move smoothly in the register. changed to spare.ok air checks ok,
don't want to go thru the effort of installing again and then find. it needs
to come out again. any suggestions would be great.

let me know if you need more info or pic's
thanks
robb
 

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Is it possible that the 4 tang spring retainer was forgotten which locates the press reg spring on the PR valve?
What happens to line pressure when you rev the motor.
What was the transmission condition before installing the brake, did you disassemble and inspect the pump when doing the trans mods.

Talk to you soon ,Hutch
 

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Discussion Starter #3
hutch ,

thanks for the reply, the 4 tang spring retainer is in place, the trans.
was a fresh build. the pressure stays right about 90 psi even when
you rev. it up. and only 60 in reverse. it felt firm in forward gears
just nothing in reverse. been in contact with the ATD, they say
there is a possibility the check ball in the valve body is in the
wrong place. but when i checked the line pressure.wouldn't this
give me the pressure before it gets to the valve body?yes took the
pump apart before the build and checked it again since. there is some
slight wear on the gears, and little to no warpage in the matting surfaces
the check ball in the valve body doesn't appear to do anything.
it should be a one way check thru the valve body plate to case
if i'm right and where this one is at there is no hole in the plate.
so what it does i'm not sure. waiting to see a picture from hipster
as to the placement of the check ball.

thanks for the help
Robb
 

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Discussion Starter #4
hutch,

took some pic's haven't got a chance to post them yet, during my photo
journalistic adventure i air checked the spool valve as you asked. also
compared it to a stock pump my buddy brought over. seems this pump
in my car had a b&m manual shift kit in it so the spool valve is different
than the stock valve. during the air check i couldn't get my valve to move
had a lot of air bypassing. checked the stock valve and worked as it should.
took both valves out of the pumps. found the one in my pump had a small
bypass hole in the end that feeds to the next passage. so could not air check
properly. reread the instructions form HIPSTER doesn't say anything about
a new valve only the spring. so i put the stock valve with the heavy spring
back in and reassembled the trans. will put back in car and check line pressure
again. air checked the rear servo and direct clutch working fine.
hopefully this is the problem and i can finally get to the track before the snow
fly's

thanks a ton for the help.

i will still post the pic's if you would like to see the parts still.

thanks again
ROBB
 

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If you are refering to the pressure regulator valve be careful not to mix them up. If you put a solid regulator in an early pump that should take the regulator with a balance hole in it , that will make a huge mess when you start it. It will not regulate and likely break the pump.
Email me what you have and some decriptions and i'll see what I can do.

Take care ,Hutch
 

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Discussion Starter #6
still low line pressure and no reverse

hutch,

sorry it has taken so long to post again, went on vacation and been
working a ton. just got the trans back in to see if the changes did
anything. i changed the regulator valve and got the rear servo working
better. air checked everything seems to work no leaks, checked function
with car off the ground, all gears working. transbrake still not stoping forward rotation. does have reverse. put on the ground and pressure
test. only 90 psi in p,n,1,2 only 70psi in r & 3rd. and no reverse with
vehicle on the ground. so not sure what to check at this point other
than maybe put a new pump in it and try it again. i'll send an email
with the pic's of the valve body and 2 dif. pres. reg's. is there anything
else that could cause this thing to not have reverse or the t/brake
from working. thanks for the previous help
this is the only thing keeping me from putting some laps on this damn
car. sure would be nice to get the damn thing working so i could make
a lap or two before the snow fly's. even just a burn out in front of
my house would make me happy at this point.

thanks
robb
 

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Discussion Starter #8
hutch,

sent you some pic's right to email address. let me know if they made it.
thanks for all the help

robb
 

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Discussion Starter #9
trans brake

hutch-

talked to charlie at ATD-i sent him the t/brake and seperator plate
should here back from him later this week as too what they think is
wrong with my set up. should be getting a new valve body and
seperator plate i hope. getting tired of all the work and haven't even
made a pass down the old 1/4 mile yet. thought there would be more
time in the suspension and nos, not the transmission.
this will probably not be the last time i have the trans. out as i still
need to do some testing with my current converter and the nos.
may need your help some on a new nos converter. my combonation
has changed a bunch since i first bought the converter.
my current combanation is 3300# 70 nova, 4 link, dbl. coil over,
440 cid bbc, 781 heads (340 i,272 e @ .700), erson nos roller
.739/.739,276/284 @.050 on a 112*,13.5:1, and 1050 dom.
10" tci converter and t400, and nos when i know it goes straight.
will be throwing about 250-300hp at the step after we get the
motor running right.
any suggestion's on a converter would be helpful.
and thanks again for all your help so far.

robb
 

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I put together a plate diagram for you .
If you need it to modify what you have ,let me know .
Try the 10" first , then you will have some really good data to get the proper nitrous converter perfect the first time although I would actually want to see a 9" converter in the car when you make the switch if need be.

Take care ,Hutch
 

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Discussion Starter #11
plate diagram

i ups'd the parts monday. should be to them in a day or two. if they
don't want to help out. i'll be calling you for that diagram for sure.
thanks again for the help

Robb
 

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Discussion Starter #12
hell yes.

hutch,

you are the man. just go my parts back from the dipsticks at
hipster (charlie, what a @#$%) he's got the manners of a junkyard
dog. anyway he sent me a new valve body and seperator plate.
didn't say what was up with mine. but do have new parts.
put everything back together. and imagine this it all works. wish i
could have had this figured out the first time i called him back in
july and had the car to the track this year. oh well seems to all
work properly now. haven't got pressures yet but will soon.
all seems good on jack stands. brake works and all.

thanks alot your the best.

let you know on that converter when i get this heep to the track.
thanks again
Robb
 

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Great to hear. Im sure if you looked at the parts closely compared to the pictures you have ,you'll know what the problem was. Glad to hear they looked after it for you.
Hopefully now you can get out and test before it gets cold.

Take care ,Hutch
 
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