Tremec T56 trans

kcd1369 · Feb 28, 2015

Great job. That looks like a blast to drive. Even better when you get the few kinks worked out. Nice work. :bow::bow::thumb:

Belgiquebasterd · Mar 3, 2015

Haven't had much time to do anything, did drive it some more though.

Noticed that I can move the shifter over to the reverse position but when I push it forward it won't go into reverse gear. If I keep pressure on the gearshift lever and then wiggle it a bit it pops into reverse without any weird sounds or grinding noises.

Still hoping that it's a problem with the clutch rather than the trans internals, I had contact with the fabricator of the clutch and according to them the clutch need .280" to .315" to fully disengage. I 'measured' and it looks like the clutch slave only moves around 0.240 ish so the clutch probably doesn't fully disengage.

Video says a thousand words

, the black marks are about 0,196" apart:

Question now is what causes this?? I can think of 2 reasons:

Clutch not properly bled of air, I followed the OEM procedure and the clutch got a good even feel to it all the way through the stroke. Any other tricks of bleeding one of these type clutch slave? (type without a bleeder valve on the slave)

Mismatch of parts, mainly between the 2005 viper srt clutch master cylinder and the 2009 dodge challenger slave cylinder. Could it be that the master cylinder stroke/oil volume is too litlle for the challenger slave?

slave:

master:

Any advice is more than welcome!

Redtruck-VA · Mar 3, 2015

I'm not any help here, but I had a mismatched clutch master cylinder on a conversion I did and it wouldn't properly release the clutch much like you are experiencing. If it doesn't improve by pumping then I'd say mismatched volumes of master/slave cylinder... Good luck.

charged392 · Mar 4, 2015

It's likely there's a volume issue of you
Bled it out and it still
Doesn't stroke fully. Maybe some more fab coming to make a diff
One fit.

MANual_puller · Mar 4, 2015

Would a master cylinder out of a HD 2500 or 3500 truck work better maybe?

Belgiquebasterd · Mar 4, 2015

charged392 said:
It's likely there's a volume issue of you
Bled it out and it still
Doesn't stroke fully. Maybe some more fab coming to make a diff
One fit.

Lifted up the nose of the truck today, to make the clutch master reservoir the highest point in the system and then pumped the pedal about 500 times but no progress, still won't go into reverse.

Now the question is what master do I get, I checked online and the stock 2009 challenger looks to be a completely different setup (mounting wise) than this one. Any other suggestions are more than welcome.

Belgiquebasterd · Mar 4, 2015

MANual_puller said:
Would a master cylinder out of a HD 2500 or 3500 truck work better maybe?

Looks like it would fit in the stock location, offcourse I have no idea if this one has enough stroke.

Pre Filled Clutch Master Slave Cylinder 01 04 Dodge RAM 1500 2500 3500 | eBay

charged392 · Mar 4, 2015

Will it shift to reverse off fine and this issue is just a running issue?

Redtruck-VA · Mar 4, 2015

Christof, that's a matched set so my guess is it would work.

Belgiquebasterd · Mar 4, 2015

charged392 said:
Will it shift to reverse off fine and this issue is just a running issue?

With motor running:

- will not shift into reverse, I can move the gearshift lever over to the reverse gear gat position but it won't engage the gear. If I then wiggle the gearshift lever a little bit it pops straigth in without any weird noises or grinding.

With motor off:

- shifts into every gear, reverse included, without any problem

Another thing is, I can't downshift in the higher gears. Both this and the reverse gear 'symptoms' all have me believe that it's a clutch problem. That is why I checked how far the clutch slave extends when the clutch pedal is depressed.

Belgiquebasterd · Mar 4, 2015

Redtruck-VA said:
Christof, that's a matched set so my guess is it would work.

I wouldn't need the whole set, I'm using a different style slave. I'd prefer using the master cylinder of a 2009 dodge challenger, since that is the OEM partner of the slave I'm using. From the pictures I have managed to find, I'm worried that I wouldn't be able to mount it properly, it looks like a completely different configuration than the ram ones.

MANual_puller · Mar 4, 2015

Can you start by using a hose and graduated jug to see how much fluid the slave cylinder needs by pulling it out as far as you need it to move? You could use the same hose and jug setup to see how much fluid the master cylinder displaces and compare. If they match you've got air in the system yet or a shim issue, if they don't you've got mis-matched parts :thumb:

Belgiquebasterd · Mar 5, 2015

MANual_puller said:
Can you start by using a hose and graduated jug to see how much fluid the slave cylinder needs by pulling it out as far as you need it to move? You could use the same hose and jug setup to see how much fluid the master cylinder displaces and compare. If they match you've got air in the system yet or a shim issue, if they don't you've got mis-matched parts :thumb:

hmmmm, good idea, but that also means pulling the transmission again :sad:

MANual_puller · Mar 5, 2015

Belgiquebasterd said:
hmmmm, good idea, but that also means pulling the transmission again :sad:

Well maybe there is another way...might be able to research the bore and stroke of both parts and calculate the displacement

Belgiquebasterd · Apr 10, 2015

Small update, haven't been home much so haven't driven it much. Did however order an updated master/slave set, originally meant for an SRT10 truck, so should fit perfectly (or so i hope

) Will be a while before I have the time to install.

charged392 · Apr 11, 2015

There yah go

Redtruck-VA · Apr 11, 2015

:thumb: that should do it....

surgicaltech2004 · Apr 11, 2015

The suspense!!!!

MANual_puller · Apr 17, 2015

Cristof, what does your input shaft measure and what is the spline count? I am having a devil of a time locating a performance clutch for my truck....:sad: Thanks!

Belgiquebasterd · Apr 18, 2015

MANual_puller said:
Cristof, what does your input shaft measure and what is the spline count? I am having a devil of a time locating a performance clutch for my truck....:sad: Thanks!

Back offshore now, will measure when i get back home in a couple of weeks!

Tremec T56 trans

kcd1369

Belgiquebasterd

Redtruck-VA

charged392

MANual_puller

Belgiquebasterd

Belgiquebasterd

charged392

Redtruck-VA

Belgiquebasterd

Belgiquebasterd

MANual_puller

Belgiquebasterd

MANual_puller

Belgiquebasterd

charged392

Redtruck-VA

surgicaltech2004

MANual_puller

Belgiquebasterd

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