tilton hrb 600 help
Discussion
Hi guys, newbie in trouble!!!!!
I have jsut installed a tilton hrb 600 concentric release bearing into my 4wd cosworth box, I am running an ap twin plate clutch and appropriate flywheel.
my trouble is when i start the car i am getting a rattling, as if the release bearing were hitting the clutch fingers but the bigger prob is the car doesn't accept gears. could it be that with the clutch pack being used I'd need a stronger master cylinder, currently using an ap .625???? any help gratefully received
I have jsut installed a tilton hrb 600 concentric release bearing into my 4wd cosworth box, I am running an ap twin plate clutch and appropriate flywheel.
my trouble is when i start the car i am getting a rattling, as if the release bearing were hitting the clutch fingers but the bigger prob is the car doesn't accept gears. could it be that with the clutch pack being used I'd need a stronger master cylinder, currently using an ap .625???? any help gratefully received
twin plate clutches usually do rattle. ( when you press the pedal that is )
Do you know how much the fingers need to move, in order to release properly ??
Does your master/slave combo have enough travel ( pedal travel and bore size of master/slave ) to actually release the clutch ??
You must be expecting some extreme power, to have gone to such a clutch on a Cossie ??
Do you know how much the fingers need to move, in order to release properly ??
Does your master/slave combo have enough travel ( pedal travel and bore size of master/slave ) to actually release the clutch ??
You must be expecting some extreme power, to have gone to such a clutch on a Cossie ??
Edited by stevieturbo on Sunday 29th October 15:27
stevieturbo said:
twin plate clutches usually do rattle. ( when you press the pedal that is )
Do you know how much the fingers need to move, in order to release properly ??
Does your master/slave combo have enough travel ( pedal travel and bore size of master/slave ) to actually release the clutch ??
You must be expecting some extreme power, to have gone to such a clutch on a Cossie ??
Do you know how much the fingers need to move, in order to release properly ??
Does your master/slave combo have enough travel ( pedal travel and bore size of master/slave ) to actually release the clutch ??
You must be expecting some extreme power, to have gone to such a clutch on a Cossie ??
Edited by stevieturbo on Sunday 29th October 15:27
stevie
i have looked into the clutch area using a dental mirror and nothing there is moving/rattling, actually now seems to be coming from the transfer box area, new box so maybe another issue to investigate!!!
the cylinder does measure up to have enough travel, i am currently thinking their isn't sufficient pressure to fully release the clutch, will maybe try changing cylinder size before hauling it back out again.
not massive bhp figures but 500lb/ft of torque so it does need a good clutch.
pressure isnt an issue.
You move fluid, your foot creates the pressure.
Unless you have used a balloon for hydraulic hose, pressure is nothing to do with it.
If the pedal stroke at the master cylinder, and bore of master shift enough fluid to move the slave, enough to move the clutch, thats all that needs to happen.
You move fluid, your foot creates the pressure.
Unless you have used a balloon for hydraulic hose, pressure is nothing to do with it.
If the pedal stroke at the master cylinder, and bore of master shift enough fluid to move the slave, enough to move the clutch, thats all that needs to happen.
In my opinion ......
Maybe you should get the figures from AP. Just send their technical team an email - you can do it from their website. You need to know how much travel of the finger tips is needed to release the clutch when new and how much the fingers will move as the clutch wears. You can then work out how far your release bearing needs to be from the fingers when at rest to allow for wear and set the height of the release bearing (by packing under the slave mounts) accordingly. Otherwise your slave can reach max travel before its moved the fingers enough or by having the bearing too close you can put too much pressure on the clutch which will lead to clutch slippage as it wears and the bearing rides on the fingers all the time. At worst allowing too much travel (by incorrect release bearing positon) you could wear your crank thrust bearing faces each time you apply a heavy clutch foot.
Tilton should be able to give you the capacity of the slave which you can match to your master.
ps. I think the Tilton has a built in stop which prevents over travel of the slave which is a bonus when it comes to limiting overtravel.
Sorry if that's teaching your to suck eggs.
But if it's a box problem then that's a bit of a bummer.
Mike
Maybe you should get the figures from AP. Just send their technical team an email - you can do it from their website. You need to know how much travel of the finger tips is needed to release the clutch when new and how much the fingers will move as the clutch wears. You can then work out how far your release bearing needs to be from the fingers when at rest to allow for wear and set the height of the release bearing (by packing under the slave mounts) accordingly. Otherwise your slave can reach max travel before its moved the fingers enough or by having the bearing too close you can put too much pressure on the clutch which will lead to clutch slippage as it wears and the bearing rides on the fingers all the time. At worst allowing too much travel (by incorrect release bearing positon) you could wear your crank thrust bearing faces each time you apply a heavy clutch foot.
Tilton should be able to give you the capacity of the slave which you can match to your master.
ps. I think the Tilton has a built in stop which prevents over travel of the slave which is a bonus when it comes to limiting overtravel.
Sorry if that's teaching your to suck eggs.
But if it's a box problem then that's a bit of a bummer.
Mike
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