Hydraulic throwout bearing for 308 - Ferrari Life
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post #1 of 42 Old 09-19-2013, 05:13 AM Thread Starter
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Hydraulic throwout bearing for 308

I have a heavy clutch pedal due to the high spring pressure on the twin disk clutch on the 208 so I've decided to research options for a hydraulic system, found one in the UK that is really pricey so having a spare bell housing I did a few measurement and found that a unit for a ford T5 transmission will work for $200. It should be in today and I will take pictures of the process and adjustment for those of you who are interest. Still haven't come up with a master cylinder so all comments are welcome.
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post #2 of 42 Old 09-19-2013, 06:30 AM
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I'm trying to use a tilton throw-out in mine if that helps.

I haven't decide on master yet though either so no help there.

I will say that the 3 disc tilton clutch I'm using had a freakishly low pedal pressure using the stock 308 cable setup and a modified arm outside the bellhouse to get the travel right
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post #3 of 42 Old 09-19-2013, 06:59 AM
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Quote:
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...so having a spare bell housing...
Of course you do! Jack, you always make me smile.

There's a company in Germany that also makes a hydraulic TO bearing setup for the 308, but it's probably just as pricey as the one you found in the UK.
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post #4 of 42 Old 09-19-2013, 08:00 AM
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Jack- There were early and late clutch linkages for the 308. The late one really lightened clutch pedal pressure. Which do you have?

Taz
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post #5 of 42 Old 09-19-2013, 08:02 AM Thread Starter
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Mark your always a step ahead of me and I like what you have done, it gives me a few ideas. I promise to get back on the EFI project soon, life has had a few bumps family wise.

Bret you know me to well.
Maybe its in Germany, 695 euros.

I have both Taz but have the early on the car. The late version is on the bell housing I posted a picture of but have had this same clutch on both the later version is better but still to stiff for an old man like me.




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post #6 of 42 Old 09-19-2013, 11:48 AM
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Jack- Good luck on the update, then.

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post #7 of 42 Old 09-19-2013, 02:20 PM
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Jack, you can reduce the bore of your master cylinder to lighten your pedal AND improve the modulation of that twin disc. I went from a 3/4" bore to a 5/8" and like it much better (with the change of my clutch from a single disc organic to a triple disc metallic)

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post #8 of 42 Old 09-19-2013, 05:01 PM
 
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That first one pictured may be a problem because of the large, flat face.
Small aftermarket pressure plates often require a radiused bearing face because the pressure plate becomes concave when depressed.
What kind of pressure plate do you have?
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post #9 of 42 Old 09-20-2013, 04:48 AM Thread Starter
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Mueller Fabrication (Out of business) twin disk clutch aluminum flywheel, I wish I took a picture of it for everyone, to the best of my memory it has a SS ring where all the fingers of the clutch come together. I have a feeling its Mcleod as it has a clover leaf etched into the pressure plate, they must have made the flywheel and put a Mcleod clutch and pressure plate as a package deal.

The hydraulic bearing I ordered came in and it will not work, so I ordered a Tilton like Marks so we will be on the same page. The ID of the sleeve was was 1.375 and I thought I was ordering a 1.435 which will slide right over the collar of the existing set up.

Take that back about the SS ring, it looks just like this one.


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post #10 of 42 Old 09-20-2013, 07:54 AM Thread Starter
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Center force

It was the center force clutch that had the ss ring.

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post #11 of 42 Old 09-23-2013, 07:15 AM
 
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I've got another 4L build to finish after this one that the owner has decided to go with the GT hydrolic setup. When I get on that porject I'll share what I find out as well.

The one thing I did do though is a get a new clutch mfg that is stock size but able to handle 500+ ft-lb tq. assymbled I can take a 1ft long wrench and easily engage/disangage the clutch. the fingers on this pressure plate are flat at full depression.
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post #12 of 42 Old 09-23-2013, 09:43 AM Thread Starter
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Nice!

500 ft lbs on a single disk must require a huge spring pressure. Keep us tuned on the set up your installing, it will be interesting how the master cylinder is going to be located and how to fabricate a pedal stop. Getting my old body under the dash will be a challenge itself.

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post #13 of 42 Old 09-23-2013, 09:55 AM
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.....and how to fabricate a pedal stop. .
As an fyi, on the cable setup I did for the tilton I didn't use a pedal stop. I change the external arm that blots to the bellhousing to get the correct travel at the clutch using the stock pedal travel, so like stock the floor become the pedal stop if I recall.

My plan with the new setup will be to duplicate what I had but hydraulically because the engine change doesn't give me room for the setup I had and this seemed the easiest solution.
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post #14 of 42 Old 09-23-2013, 10:15 AM Thread Starter
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As an fyi, on the cable setup I did for the tilton I didn't use a pedal stop. I change the external arm that blots to the bellhousing to get the correct travel at the clutch using the stock pedal travel, so like stock the floor become the pedal stop if I recall.

My plan with the new setup will be to duplicate what I had but hydraulically because the engine change doesn't give me room for the setup I had and this seemed the easiest solution.
So is the master cylinder going to be located in the area where the cable linkage is now on the bell housing? Using something like this cable actuated master cylinder?
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post #15 of 42 Old 09-23-2013, 10:22 AM
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So is the master cylinder going to be located in the area where the cable linkage is now on the bell housing? Using something like this cable actuated master cylinder?
I didn't even know they made such a thing!

I've been kicking a few thoughts around. I'm 90% sold on ditchign the power brakes and doing a dual master setup and was then thinking I just buy a standard 3 cylinder/2-pedal setup and figure out how to install it.

But it might be neater to do the brak maters right where the stock master is and something like the pull master you found in the tunnel up near the pedal maybe?

Of course the only car related thing I've actually made lately is the F1 car shaped pancakes I made the kids Sunday
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post #16 of 42 Old 09-23-2013, 11:57 AM Thread Starter
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F1 pancakes

Now that is funny! I have working on my wifes porsche cayenne, now I know why they are so cheap.

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post #17 of 42 Old 09-23-2013, 11:58 AM
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...Of course the only car related thing I've actually made lately is the F1 car shaped pancakes I made the kids Sunday
That's a step in the right direction!

My latest project is to get the 125cc shifter kart back together. Once I have that crossed off the list and I'm back on the track, I'll have to slide in a Saturday or Sunday to come down your way and motivate! I'm sure there's something down there that I can mess up while trying to help.
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post #18 of 42 Old 09-23-2013, 12:29 PM
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I'll have to slide in a Saturday or Sunday to come down your way and motivate! I'm sure there's something down there that I can mess up while trying to help.
Don't do it Bret!

If Lana gets wind a friend of Marks is coming down for a visit, she'll end up having you do some house choir. Like paint the trim or something.

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post #19 of 42 Old 09-23-2013, 01:14 PM Thread Starter
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Chris my wife and I are flying out on the 5th to do the fall leaf thing, I promised her 6 years ago we would make the trip again to the northeast and see the change of seasons, my plan is to stop by and say hello if you have the time.

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post #20 of 42 Old 09-23-2013, 03:38 PM
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Chris my wife and I are flying out on the 5th to do the fall leaf thing, I promised her 6 years ago we would make the trip again to the northeast and see the change of seasons, my plan is to stop by and say hello if you have the time.
That's great Jack. Well, at least you kept your promise.

I'll mark it on my calendar and notify the media.

I got Sundays off if you two are going to be around. Keep me in the loop of your schedule.

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