Jump to content


Photo
- - - - -

Transmission installation ??


  • Please log in to reply
26 replies to this topic

#1 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 04:13 PM

Hi.
So I did swap my clutch kit on my 4speed transmission.now I am having trouble installing the tranny back into the car .any ideas ..what I am doing wrong here..Thanks

#2 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 04:24 PM

Should the back of the transmission need go in first then the front??

#3 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 04:25 PM

So the back of the transmission need to go in first and then the front??

#4 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 72,210 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 11 May 2018 - 05:03 PM

lrs-23spline_8112.jpg

 

Did you use the spline tool to align your clutch disc before tightening the pressure plate on?

 

Just lift the transmission up level with the engine. The engine is only held in place by the engine mounts and is likely tilted down at the rear making lining up a little easier. Slide the nose of the transmission past the clutch diaphragm fingers and into the pilot bushing in the end of the crankshaft. Wiggle it around while pushing forward and into place.


Posted Image

#5 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 06:01 PM

So I noticed that the clutch kit that i bought on line.. pressure plate seems to be little taller when I placed the old one next to it against the flywheel..

#6 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 06:02 PM

Could that be a problem that is making the transmission getting stuck on the firewall??

#7 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 72,210 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 11 May 2018 - 06:21 PM

PP can be taller but as long are the daphragm fingers are the same height it will work.


Posted Image

#8 Dolomite

Dolomite

    Senior Member

  • Senior Member
  • PipPipPipPip
  • 1,742 posts
  • Location:The Ville, Cali
  • Cars:1971 4 door 510, 2007 Crown Vic cvpi,1990 Supra turbo, 1970 MGB mutt job turbo

Posted 11 May 2018 - 07:06 PM

First things first, did you use a clutch alignment tool? Second, and I’ve not seen it mentioned here, I use two long bolts with the heads cut off finger tight in the top mounting holes. This makes it monumentally easier to slide the trans in. Third, you may have to put it in gear and rotate the tailshaft a tad to get the splines lined up.
Chrome door handles are under rated.

Link to my build thread
http://community.rat...er-project-510/

#9 flatcat19

flatcat19

    Back in Black

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 20,663 posts
  • Location:Tri-Cities, WA/PDX
  • Cars:Smaller. Better. Slower. Lower.

Posted 11 May 2018 - 07:10 PM

Did you use a torque wrench to evenly install the pressure plate?


Did you over tighten the pressure plate?


Is this your first rodeo?

You can't hang if your nuts haven't dropped...it's physics


#10 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 10:55 PM

PP can be taller but as long are the daphragm fingers are the same height it will work.



#11 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 11 May 2018 - 10:57 PM

Ok the fork height is not same.New pp fork is 1/8 shorter then old pp fork

#12 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 72,210 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 12 May 2018 - 06:04 AM

New fork? The fork is being changed??? You mean the distance below is 1/8" shorter???

 

 

post-19298-0-09785200-1451322457_thumb.j

 

If you measure from the flywheel surface back to the tines on the release bearing collar that the clutch arm clips onto, it should be 89mm +/- a mm. That's 3.5".

 

This distance is critical as too short forces the slave to over extend it's travel and it may not be able to compress the PP enough to release the clutch disc. Too long and the release bearing may be pushing on the diaphragm fingers all the time (wearing it out) and the PP may slip.  The slave is designed to move 1.18" so that is fixed as are the push rod and the clutch arm geometry.

 

riuq4Uz.jpg

 

Looking at the clutch arm, the fulcrum point is about 33% shorter on the clutch side to increase the mechanical advantage of the slave. Or, the slave travels 33% farther, so 1.18" of slave travel equals only 0.79" of release bearing travel. Adding 1/8" (0.125) to the release bearing is adding 0.166" to the slave end. Or 1.18 + 0.166 = 1.34". You may run out of pedal travel or slave piston travel.

 

Can you get away with 1/8" shorter? Maybe. The clutch will release closer to the floor, if it does. This may also become worse as the clutch wears down.

 

You might get away with lengthening the slave push rod but again this would move the  clutch arm back closer to the rear edge of the hole the dust boot is in.

 

 

Can you measure the length of the release collar from the clutch side of the tines to the front where the bearing is? Preferably with the bearing off.


Posted Image

#13 Stoffregen Motorsports

Stoffregen Motorsports

    Datsun Mechanic

  • Senior Member
  • PipPipPipPipPip
  • 4,170 posts
  • Location:Cool, CA
  • Cars:http://www.4wdandsportutility.com/features/rover/0611_4wd_1957_range_rover/viewall.html

Posted 12 May 2018 - 07:29 AM

What motor? What flywheel? If it's a 200mm clutch, you may have had a Roadster clutch in it and not known. They are different than a stock L16 clutch, which would explain the height difference.

 

Are you sure you didn't put the disc in backwards, causing the disc to bottom out on the flywheel bolts?



#14 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 72,210 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 12 May 2018 - 07:37 AM

I believe the Roadster clutch is a direct swap. Never heard of any 510 owners complaining about this.
 
I've tried to put a disc in backwards and it can't be done. The spline part sticks out to the front and hits the crank end before you can get the pressure plate bolts in.
Posted Image

#15 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 12 May 2018 - 09:22 AM

What motor? What flywheel? If it's a 200mm clutch, you may have had a Roadster clutch in it and not known. They are different than a stock L16 clutch, which would explain the height difference.

Are you sure you didn't put the disc in backwards, causing the disc to bottom out on the flywheel bolts?



#16 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 12 May 2018 - 09:24 AM

L18.motor.I pulled out old ppl n clutch.I got new clutch kit from online.and when I put them flat next to each other,the new pp is 1/8 in taller

#17 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 12 May 2018 - 09:27 AM

Also I am starting to think that when I gave my old flywheel to the machine shop.i Could have picked up possible different one??
Because my original fly wheel didn't have that circle groove on it .and the one I picked up has circle groove

#18 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 12 May 2018 - 09:33 AM

Clutch kit.
Luk brand part #06-022

#19 john510

john510

    Hall Monitor

  • Senior Member
  • PipPipPipPip
  • 1,984 posts
  • Location:san diego,ca
  • Cars:71,510 2000 toyota truck

Posted 12 May 2018 - 12:02 PM

As others have asked,did you use the alignment tool ? if not that's probably your problem.One thing i do is jack up the front of the engine lightly to tilt the back side down.That helps with the tranny missing the firewall/tunnel.



#20 Rasp933

Rasp933

    Advanced Member

  • Members
  • PipPipPip
  • 262 posts
  • Location:Modesto
  • Cars:70 datsun 510,74 celica,88 prelude,00 tacoma ,02 corolla

Posted 12 May 2018 - 02:30 PM

Used alignment tool