Hi I have a toyota surf that I have stuck a V8 in, got a clutch kit from here. has a soild flywheel, new master clutch cyclinder, new braided clutch line. 2200lb pressure plate. I have bleed it for over 2 days trying to get it to work properly. I have no more air coming out of the slave cyclinder now, but I still need that little bit more pressure to be able change gear first and reverse is a nightmare. but If pump the top spungy part of the peddle six or more times before I select First/Reverse It slips in fine. I really don't think I have anymore air in the system. Any tips to get this sorted would be awesome.
franc123,
Nov 22, 7:31pm
the master cylinder has probably packed it in.
quater,
Nov 22, 7:33pm
So I thourt aswell, But have fitted a new one and no change.
NZTools,
Nov 22, 7:33pm
Smaller diametre slave cylinder will give you more travel, as will a larger master cylinder How much freeboard in there on the pedal! can it be adjusted up a little!
boat3,
Nov 22, 7:35pm
can you lengthen the pushrod a bit!
quater,
Nov 22, 7:38pm
I have maxed the peddle to make sure I have all the travel, The peddle hits the floor tho and I haven't got anymore travel forward. Changing the slave might have to be the next step.
quater,
Nov 22, 7:40pm
push rod has lengthened to about 2mm slack, that really didn't change any peddle feel at all.
NZTools,
Nov 22, 7:42pm
before you do, measure how much the pushrod on the slave cylinder moves, when the pedal is pressed to the floor. If it is already traveling almost it's full length,, a smaller diameter cylinder wont help.
kiwikaryn,
Nov 22, 7:51pm
Make sure bleed nipple is in top hole and line is
quater,
Nov 22, 7:52pm
I must have enough travel in the slave as when its at max pressure (pumping top part of peddle six or more times) it works, but only lasts one gear change, after releasing peddle.
sr2,
Nov 22, 7:52pm
It does not sound like a push rod problem (it seldom is).
sr2,
Nov 22, 7:56pm
If you a correct you have a displacement issue and will need to either reduce the size of your slave or increase the size of your m/cyl.
quater,
Nov 22, 7:57pm
Yes slave needs to extend more which it can, Condition is all new apart from slave, which isn't leaking flulid so I assume isn't passing air.
quater,
Nov 22, 7:59pm
Will it be hard to find a slave that will suit. Do they make different sizes for the same model!
quater,
Nov 22, 8:10pm
Thanks guys, gives me something else to try.
purple666,
Nov 22, 8:44pm
Maybe a dodgey line! Have found that some of those braided lines expand more than others.
snoopy221,
Nov 22, 10:32pm
Back it up. Qauter-what clearence is on the master pushrod!
(pumping top part of peddle six or more times) it works, but only lasts one gear change, after releasing peddle
I'd disconnect the pedal and check-K
Set the master cyl pushrod clearance to slightly negative and re bleed- BUT When bleeding use a tube HIGHER than slave nipple -in to a bottle-and give it 5 to ten FULL STROKES making SURE it is good down pedal speed and SLOW return-give 3to4 strokes-check master then continue-K Oh and post master and slave bore sizes if ya can. But some *Otas* had a problem with the master cyl pedal preload adjustment-and if not correct- it'll explain the *top of the pedal softness** As a tad of preload and the master can not fully recuperate and WILL have residual air in the master. Kapeesh! Long time no sea bra.
snoopy221,
Nov 22, 11:01pm
Set the master cyl pushrod clearance to slightly negative and re bleed- Gunna reword that.
K
You want the pushrod to the master removed and the clutch pedal as high as it can go [pedal stop should be adjustable] and the master cyl pushrod adjusted so you can freely fit the pin on the pedal end in-then refit the spring-if fitted-K KAPEESH!
panicky,
Nov 23, 4:55am
did you grease the spline!
gadgit3,
Nov 23, 5:15am
I had the same issue with my Hiace (1UZ fitted). For me it wasn't a air issue it's more a combo of parts issue. A longer release bearing will sort it, also fitting a longer fork pivot will help. And a smaller dia slave cylinder also fixes the issue. I found the slave to be 15mm out at rest so lenghtened the fork pivot so as the slave was only 5mm out at rest. Issue sorted.
smac,
Nov 23, 6:08am
If you are getting pedal after pumping it, I'd still be chasing air.
unbeatabull,
Nov 23, 11:49am
No ones suggested reverse bleeding it! Silly idea I know, but have had to do it a few times to fix symptoms the same as this (due to air still being in the line/system)
thunderbolt,
Nov 23, 1:19pm
Reverse bleeding! Push air into the slave bleed nipple until it fills the master cyl!
elect70,
Nov 23, 1:52pm
Get apressure bleeder& try that firstthen if no go the mods as outlined . I had similar prob whendidtoyta 5 speed & dyna clutch into 302 clevelandhad to extend thepushrodto givefull release .
gadgit3,
Nov 23, 2:21pm
Thats the issue the parts for the conversion are just not quite right. You get an option of using the 9.5" 3S-GE flywheel and clutch kit to suit W/G series box or you get a 10" custom flywheel and clutch kit. Both require a little more throw then the standed Master/Slave has.
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