[V8Vairs] hyd clutch info wanted

[Don Prusha]

I remember having a similar problem many years ago when I first began  
putting the Kelmark together.  The clutch did not engage until the end  
of the stroke and slipped under hard acceleration.  The problem was  
that I had used the wrong throwout bearing.  Close but no cigar.

I no longer am engaged in the Corvair but I enjoy reading what you  
guys are doing.  Keep up the good work.

Don Prusha
327 ZF

On Jan 21, 2009, at 6:00 PM, Test User wrote:

> tim-what differences did you see in going to the 5/8 bore master  
> cylinder.
> i'm using a wilwood slave with 7/8 bore and 1-3/8 stroke and a 3/4  
> bore
> master cylinder. clutch doesn't engage until the end of the pedal  
> movement.
> could i have screwed up by using a mighty vac to bleed with and  
> might have
> gotton fluid on both sides of the seal. thanks-mike mann
>
> On Wed, Jan 21, 2009 at 8:49 AM, Tim Barrie <tbarrie at meritprecision.com 
> >wrote:
>
>> Tom,
>> I just went through this with a Kelmark that I am building. Bryan  
>> Blackwell
>> asked me what I ended up with and this is the summary that I sent  
>> him.
>>
>> "I used the Howe Racing throw out bearing from Summit Racing. The  
>> Summit
>> part number is HRE-82870. I added the remote bleeder kit which was  
>> part
>> number HRE-8287 as well.
>> I used the Tilton master cylinder from Summit which was  
>> TIL-74-625U. I
>> started with the 3/4" and went to the 5/8"; the result of our V8Vair
>> discussion.
>> I used 1/4" hard line from the master to the flex line from the Howe.
>> The hardest part was making the clutch pedal pivot point robust  
>> enough to
>> take the forces. I ended up making a 1" tube structure from the  
>> Corvair
>> steering column bracket to the kick plate where the clutch master  
>> cylinder
>> bolted up. I replaced the cross shaft with solid bar stock and a  
>> pillow
>> bearing at the end; also supported by the structure. Without the  
>> structure
>> there was just too much flexing of the sheet metal and I couldn't  
>> get the
>> stroke I needed through the master."
>>
>> Tim
>>
>> -----Original Message-----
>> From: v8vairs-bounces at corvair.org [mailto:v8vairs- 
>> bounces at corvair.org] On
>> Behalf Of tom zimmermann
>> Sent: Wednesday, January 21, 2009 10:22 AM
>> To: v8vairs at corvair.org
>> Subject: [V8Vairs] hyd clutch info wanted
>>
>> ..I'd like to find more detailed info on what master+ slave setups  
>> are
>> being
>> used,pics and measurements of the mods to the pedal shaft,piston  
>> bores and
>> what clutch fork is used..any problems running the Howe slave  
>> bearing?
>> Ron's
>> 327 is in the shop,and now's the time to correct the pedal effort/ 
>> travel
>> issues (Ansen bell,Vette fork,new 1 1/6" slave,1 1/8" and 1 1/4"  
>> pistons on
>> the '60 truck combo master;11" flywhl w/10 1/2" disc-PP is getting  
>> all
>> stock
>> 11" parts..)..I've got a couple options for mine, either use the OLD
>> Lakewood on the '92 4.3 stock 11" clutch/hyd system,or modify the  
>> 4L60 bell
>> with the Howe bearing...TIA, Tom Z,   s10birdman1966 at yahoo.com
>>
>>
>>
>>
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