Subject: [Spridgets] Datsun 5 Speed Clutch

From: Michael MacLean via Spridgets <[email-masked]>
Date: Tue, 7 Dec 2021 22:44:29 -0800

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You guys that have a Datsun 5 speed trans conversion using a modified
flywheel to accept a Datsun clutch assembly by Paul A., can you tell me
what slave cylinder you are you using?  Also, can you describe your pedal
feel.  I have always had a very stiff pedal that more or less acts like an
on and off switch.  All the action is a few inches up from the floor.
Moving from a standing start is difficult, but once moving, changing gears
is not a problem.  Very difficult not to chirp the tires in 1st or
reverse.  I am using the 948 slave cylinder which according to Paul A.
would be OK.  Just not fun to drive this way.  I have just converted to
disc brakes using a 3/4" Lockheed master.  Nothing will change for the
clutch as I had my original 7/8" master with a 3/4" sleeve on the clutch
side.  Have been thinking of re-engineering the clutch back to a 1275
clutch with a Spridget slave. I don't want to go to the expense if it won't
change anything.
Mike MacLean

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<div dir=3D"auto">You guys that have a Datsun 5 speed trans conversion usin=
g a modified flywheel to accept a Datsun clutch assembly by Paul A., can yo=
u tell me what slave cylinder you are you using?=C2=A0 Also, can you descri=
be your pedal feel.=C2=A0 I have always had a very stiff pedal that more or=
 less acts like an on and off switch.=C2=A0 All the action is a few inches =
up from the floor.=C2=A0 Moving from a standing start is difficult, but onc=
e moving, changing gears is not a problem.=C2=A0 Very difficult not to chir=
p the tires in 1st or reverse.=C2=A0 I am using the 948 slave cylinder whic=
h according to Paul A. would be OK.=C2=A0 Just not fun to drive this way.=
=C2=A0 I have just converted to disc brakes using a 3/4&quot; Lockheed mast=
er.=C2=A0 Nothing will change for the clutch as I had my original 7/8&quot;=
 master with a 3/4&quot; sleeve on the clutch side.=C2=A0 Have been thinkin=
g of re-engineering the clutch back to a 1275 clutch with a Spridget slave.=
 I don&#39;t want to go to the expense if it won&#39;t change anything.<div=
 dir=3D"auto">Mike MacLean</div></div>

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Archive: http://www.team.net/pipermail/spridgets  http://autox.team.net/archive

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From: Rick Fisk via Spridgets <[email-masked]>
Date: Wed, 8 Dec 2021 11:34:53 -0500

I have an uninstalled Rivergate kit in my garage.  It came with a Datsun slave cylinder and a modified Datsun clutch disc.  You use the standard A-series flywheel and pressure plate.  Go figure.  :-)

> On Dec 8, 2021, at 10:40 AM, Bill L. via Spridgets <[email-masked]> wrote:
> 
> Hello Michael,
> 
> 
> When we put it together Paul just re-used the slave from the tranny on the 1098. 
> I believe we have the slave adjusted "all the way out" so that the take up is not at the top of the pedal range, nor just off the floor. 
> We also used the original master.    
> I don't have the problem that you have at all. Easy to slip the clutch and the engagement f
> 
> 
> 
> -- 
> Best regards,
> Bill                            mailto:[email-masked]
> 
> 
> Listen to sermon, THEN eat missionary! 
> 
> ------------------------
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From: Rick Fisk via Spridgets <[email-masked]>
Date: Wed, 8 Dec 2021 22:36:44 -0500

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I should have said how much play between the pushrod and pistons?

> On Dec 8, 2021, at 8:27 PM, Michael MacLean <[email-masked]> wr=
ote:
>=20
> =EF=BB=BF
> Adjusted.  Close, but not contacting the bolt stop.
> Mike M
>=20
>> On Wed, Dec 8, 2021, 4:37 PM Rick Fisk <[email-masked]> wrote:
>> Mike,
>>=20
>> How much play do you have between the pedal and pushrods?
>>=20
>> Sent from my iPhone
>>=20
>>>> On Dec 8, 2021, at 7:27 PM, Michael MacLean via Spridgets <spridgets@au=
tox.team.net> wrote:
>>>>=20
>>> =EF=BB=BF
>>> We have decided that without pulling the engine and looking what's going=
 on in the bell housing, we're done with the clutch for now.  Another proble=
m now is with the brake pedal.  The whole purpose of this was to switch to d=
isc brakes from the original drums.  I swapped the old master with a 7/8" bo=
re to a new AP Lockheed master with dual 3/4" bores as per disc brake 1098/1=
275 Spridgets up to 1967.  I used the old 7/8" brake pushrod that was 4 - 1/=
8" long and cut it down to 3- 11/16" in length.  The clutch pushrod was alre=
ady cut down for the 3/4" sleeve in the original master to accommodate the D=
atsun clutch.  After bleeding the brakes and clutch, the clutch is just as i=
t was with the old master cylinder, but the brake pedal goes half way to the=
 floor before becoming solid.  Brakes work OK, but the excessive travel in t=
he pedal is a mystery.  If there was air in the system, you could pump it up=
 to have the pedal at the top, but pumping the brake pedal makes no differen=
ce.  No air in the system, so what could it be?
>>> Mike M
>>>=20
>>>> On Wed, Dec 8, 2021, 10:16 AM Jeff Kelly <[email-masked]> wrote:=

>>>> Michael et all,
>>>>=20
>>>> I have a Rivergate kit.  When I installed I used the modified Datsun=20=

>>>> clutch disk , spridget 1275 flywheel and the billet slave cylinder they=
=20
>>>> supplied.  I think it is a 7/8" slave. My master is a3/4" bore. Went to=
=20
>>>> 3/4" when I converted to front disc brakes. The clutch system did not=20=

>>>> work out too well.  I burned up 2 disks before I sent my flywheel to=20=

>>>> Gerard and had it drilled for the Datsun clutch plate and disk.  Works=20=

>>>> better, but still needs some adjusting.  To completely disengage, my=20=

>>>> pedal is all the way to the floor.  I wonder if a 7/8" master would wor=
k=20
>>>> better.  Long range I plan to install seperate brake and clutch masters=
=20
>>>> and us a 7/8" for the clutch.
>>>>=20
>>>> Jeff Kelly
>>>>=20
>>> ------------------------
>>>=20
>>> [email-masked]
>>>=20
>>>=20
>>> Archive: http://www.team.net/pipermail/spridgets  http://autox.team.net/=
archive
>>>=20
>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/refi=
[email-masked]

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">I s=
hould have said how much play between the pushrod and pistons?</div><div dir=
=3D"ltr"><br><blockquote type=3D"cite">On Dec 8, 2021, at 8:27 PM, Michael M=
acLean &lt;[email-masked]&gt; wrote:<br><br></blockquote></div><b=
lockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<div dir=3D"auto">Adjusted=
.&nbsp; Close, but not contacting the bolt stop.<div dir=3D"auto">Mike M</di=
v></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Wed, Dec 8, 2021, 4:37 PM Rick Fisk &lt;<a href=3D"mailto:refisk@charter=
mi.net">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex"><div dir=3D"auto">Mike,<div><br></div><div>How much play do you have b=
etween the pedal and pushrods?<br><br><div dir=3D"ltr">Sent from my iPhone</=
div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Dec 8, 2021, at 7:27 P=
M, Michael MacLean via Spridgets &lt;<a href=3D"mailto:[email-masked].=
net" target=3D"_blank" rel=3D"noreferrer">[email-masked]</a>&gt; w=
rote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=
=BB=BF<div dir=3D"auto">We have decided that without pulling the engine and l=
ooking what's going on in the bell housing, we're done with the clutch for n=
ow.&nbsp; Another problem now is with the brake pedal.&nbsp; The whole purpo=
se of this was to switch to disc brakes from the original drums.&nbsp; I swa=
pped the old master with a 7/8" bore to a new AP Lockheed master with dual 3=
/4" bores as per disc brake 1098/1275 Spridgets up to 1967.&nbsp; I used the=
 old 7/8" brake pushrod that was 4 - 1/8" long and cut it down to 3- 11/16" i=
n length.&nbsp; The clutch pushrod was already cut down for the 3/4" sleeve i=
n the original master to accommodate the Datsun clutch.&nbsp; After bleeding=
 the brakes and clutch, the clutch is just as it was with the old master cyl=
inder, but the brake pedal goes half way to the floor before becoming solid.=
&nbsp; Brakes work OK, but the excessive travel in the pedal is a mystery.&n=
bsp; If there was air in the system, you could pump it up to have the pedal a=
t the top, but pumping the brake pedal makes no difference.&nbsp; No air in t=
he system, so what could it be?<div dir=3D"auto">Mike M</div></div><br><div c=
lass=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Dec 8, 20=
21, 10:16 AM Jeff Kelly &lt;<a href=3D"mailto:[email-masked]" target=3D=
"_blank" rel=3D"noreferrer">[email-masked]</a>&gt; wrote:<br></div><b=
lockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #=
ccc solid;padding-left:1ex">Michael et all,<br>
<br>
I have a Rivergate kit.&nbsp; When I installed I used the modified Datsun <b=
r>
clutch disk , spridget 1275 flywheel and the billet slave cylinder they <br>=

supplied.&nbsp; I think it is a 7/8" slave. My master is a3/4" bore. Went to=
 <br>
3/4" when I converted to front disc brakes. The clutch system did not <br>
work out too well.&nbsp; I burned up 2 disks before I sent my flywheel to <b=
r>
Gerard and had it drilled for the Datsun clutch plate and disk.&nbsp; Works <=
br>
better, but still needs some adjusting.&nbsp; To completely disengage, my <b=
r>
pedal is all the way to the floor.&nbsp; I wonder if a 7/8" master would wor=
k <br>
better.&nbsp; Long range I plan to install seperate brake and clutch masters=
 <br>
and us a 7/8" for the clutch.<br>
<br>
Jeff Kelly<br>
<br>
</blockquote></div>
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</div></blockquote></body></html>=

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