another clutch not engaging

[Biggo]

interesting idea mr roadrunner. I shall try it.

i have a suspision that the input is on an angle, as it is really hard to get the box 'flat' when putting it in.

I hope its not a motor out job

[brett_celicacoupe]

if its in a kit, whats the master to slave cylinder diameter like?

you might have gotten a small slave cylinder that gives very little displacement.

a mate put a nissan engine/box in a bmw and it was the opposite. there was 100% dissengagement by about 25% clutch pedal depression

bloody zermans

[Biggo]

standard 71 clutch master ans slave. Same with the bellhousing just with an ra60 throwout carrier and bearing.

["Z" UTE]

Biggo, been down this route a couple of times with gearbox conversions/adapters. It basically comes down to making some very accurate measurements. I used a vernier caliper, and a steel rule.

With clutch and pressure plate installed correctly, measure distance from rear of engine to the back of pressure plate fingers. With clutch fork fully rearward, measure distance from throw out bearing to front of bellhousing. Compare measurements, first one should only be 8-10mm longer than the second. If not, select a different height throwout bearing. I found the Excedy clutch book had lotsa pics and measurements.

Cheers Chuck.

[Biggo]

indeed

i was thinking along the exact same line, apparently some sort of RA/MZ clutch/bearing is an exact match but no one seems to know which one. seeing as i went and got pissed fixing a datmo toyota today nothing got done.

so the todo list looks like this:

pull bell off gbox
bolt bell onto motor
determine if it 'works'
if not - got to auto shop with bearing/carrier and search thru ther catalogs

[Biggo]

8-10mm? i can get it to zero which imo is not a good thing havong the bearing on the PP all the time

[Biggo]

or maybe im just to hammered to make sense of it right now?

[Biggo]

after much fucking around (gbox and clutch in/out 4 TIMES!) I found my problem

turns out the spigot holder was 2mm too long. I was RIght

I just dodgied it up woth some washes between the bell and sandwich plate. hehe

[The Real Roadrunner]

spigot bearing i think your refering to.

get the correct one as your quick fix WILL cost you a clutch disc as it will be missaligned even by a small amount.

cheers
linden

[allencr]

the spigot holder was 2mm too long.

Huh, the pilot bearing is held by the crankshaft?
What are you adjusting or changing?

[Biggo]

no its a kit

spigot hollder was not pressed in proper (my fault)

AND the Clutch plate was .5mm too small for some reason, so i die grinded it out and oiled it up.

Made a custom throwout carrier too, all in all after an entire week of head scratching ive finally solved what should have been a simple fix.

But id do it again for the costs, $600 in total to do whats commonly considered a $2k conversion HA!

[oldcorollas]

spigots have holders?.. or you mean the spigot bearing was not pressed into the crankshaft properly?
or is it a bodgy bush in the crankshaft holding the spigot?

what do you mean the cluthc plate was 0.5mm too small? to fit the friction plate in there?
was that measured with the clutch torqued up? could the friction plate still be hitting?

how did this "spigot holder" cause the gearbox input shaft to stay at the flywheel speed?

[allencr]

+1 for oldcorollas puzzlement

no its a kit
Kit, consisting of what, clutch flywheel stuff or clutch operating mechanism stuff?
spigot hollder was not pressed in proper (my fault)
I'll guess that its really the release/throw-out or called by some the thrust/carrier bearing, NOT the spigot bearing, and is pressed onto some sort of sleeve that slides on a tube over the input shaft?

AND the Clutch plate was .5mm too small for some reason, so i die grinded it out and oiled it up.
WTF, i give uo


Made a custom throwout carrier too, all in all after an entire week of head scratching ive Carrier?
finally solved what should have been a simple fix.


But id do it again for the costs, $600 in total to do whats commonly considered a $2k conversion HA!

[Biggo]

kit = spigot holder and adaptor plate with bolts

being custom 2nd hand item i was expecting it to be thrown in and work. the spigot bearing was not pushed in straight.

Clutchplate was the right spine number but .5mm too small for some reason. I really dont care so long as it works.

yair the THOWOUT/THRUST BEARING CARRIER is a custom biggo spec. IT need more push height and a longer body so it alines on the input

[Biggo]

spigot holder is exactly that, holds a spigot to put into the crank to compensate for the 20mm adaptor plate.

Th clutch plate was not sliding along the shaft at all. it was quite interesting trying to see what it did, of all things it burnt the INSIDE of the friction material ie closest to the input shaft.
Probably was made for a P something gearbox in an early landcruiser. (the CP that is)