[6pack] .75 bore clutch?

[Greg Lemon]

I switched to the later smaller bore MC on my TR250, I like the feel better, the old was stiff and very abrupt, still sporty, but much smoother now.  Agree that both will work fine from a clutch release range of motion standpoint if all is well with the linkage and hydraulics.

Greg Lemon


From: alan salvatore via 6pack 
Sent: Wednesday, May 13, 2015 4:16 PM
To: Btp44 at aol.com 
Cc: 6pack at autox.team.net ; Emailtr4ron at mymts.net 
Subject: Re: [6pack] .75 bore clutch?


Worn out slave cylinder causes clutch release problems.
Worn clutch fork also.  Not the master cylinder being .70.
I would stick with the.70 mc. Unless you like a heavy clutch.


Al
On May 13, 2015 4:06 PM, "Btp44--- via 6pack" <6pack at autox.team.net> wrote:
>
> The reduction of the master cyl. bore dia. was to reduce pedal effort. Which it did, but also reduces the stroke of the slave cyl, which can cause clutch release problems if there is wear in the pivot points of the linkage.
> Berry
>  
> In a message dated 5/13/2015 12:52:16 P.M. Pacific Daylight Time, 6pack at autox.team.net writes:
>>
>> Thanks Jim. 
>> I guess the brake master cylinder was the one I heard I really need to buy new. Good to know you clutch cylinder has been fine. I wonder if the brakes would hold up as well with the new fluid. 
>>
>>
>> —Sent from my Atari 2600—
>>
>> On May 13, 2015, at 12:43 PM, "Jim Jones" <jimjcmo at yahoo.com> wrote:
>>
>>> For what it's worth, I went straight from DOT 3 to silicone. I replaced the master cylinder because it was old, but I kept the slave. Flushed it all out with silicone fluid and never had a problem in the following three years I owned the car. I would stay with the .70 clutch. There was a reason it was changed, but for the life of me I cannot remember. My '72 had the .75 bore part. The effort seemed okay but I didn't care much for the long throw.
>>>  
>>> Jim Jones 
>>> (573) 635-3557 
>>> Jones Beltone Hearing and Audiology 
>>> 1431 Southwest Blvd. Suite 1 
>>> Jefferson City, MO 65109 
>>> www.jonesbeltone.com 
>>>
>>> ________________________________
>>> From: James_ via 6pack <6pack at autox.team.net>
>>> To: 6 Pack <6pack at autox.team.net> 
>>> Sent: Wednesday, May 13, 2015 2:37 PM
>>> Subject: [6pack] .75 bore clutch?
>>>
>>> I am planning on switching my brake fluid to silicone based. Which means I can't use my master or clutch cylinders and need to buy new ones. (Heard the seals will go bad when switching fluid types). 
>>> I have a 1976 model that uses a .70 bore clutch slave but see there is a .75 bore. Is it better? How does it change the clutch pedal feeling? Maybe a longer pedal throw?
>>> Advice?
>>>
>>> James
>>>
>>>
>>> —Sent from my Atari 2600—
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