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sealing hs4 throttle shafts for boost

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volkmini

Post subject: sealing hs4 throttle shafts for boost

Posted: Wed Oct 10, 2007 7:55 pm

848cc

Joined: Sun Nov 26, 2006 8:51 pm
Posts: 254
Location: Mornington

hi, i'm woundering how to seal the shafts. i know that hiff have special seals but i carn't get any info on hs4 1"1/2 carbys. machine a grove in the shaft each side and putting in a rubber o-ring or a special o-ring for the friction. will this work.

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brickworx

Post subject:

Posted: Wed Oct 10, 2007 10:27 pm

1275cc

Joined: Tue Dec 14, 2004 9:38 am
Posts: 2008
Location: Adelaide, South Australia

You will constantly be changing the seals.
not a very good carby for sealing boost in

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suffolk

Post subject:

Posted: Wed Oct 10, 2007 10:34 pm

848cc

Joined: Sun Jan 07, 2007 3:22 pm
Posts: 249
Location: narrogin w.a

Put weber bearings on throttle shafts,stops air leaks and shafts will never wear again...P.M me if you want to see pics of some installed..

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brickworx

Post subject:

Posted: Wed Oct 10, 2007 10:37 pm

1275cc

Joined: Tue Dec 14, 2004 9:38 am
Posts: 2008
Location: Adelaide, South Australia

aren't they too big for an SU?

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suffolk

Post subject:

Posted: Wed Oct 10, 2007 10:44 pm

848cc

Joined: Sun Jan 07, 2007 3:22 pm
Posts: 249
Location: narrogin w.a

Mines got bearings on them and its a old trick that used to be done years ago,not sure on size, but they fit with a bit of machining on carb body.

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brickworx

Post subject:

Posted: Wed Oct 10, 2007 10:49 pm

1275cc

Joined: Tue Dec 14, 2004 9:38 am
Posts: 2008
Location: Adelaide, South Australia

On as HS type the body is very thin...
i have seen it done but i thought weber bearings were too big

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sgc

Post subject:

Posted: Wed Oct 10, 2007 10:51 pm

This space for rent

Joined: Thu Feb 08, 2007 12:40 pm
Posts: 5455
Location: Melbourne

What you probably need is this:

http://www.ausmini.com/forums/viewtopic.php?t=35277

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Simon

The adventures of an owner builder in the Tallarook Ranges

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suffolk

Post subject:

Posted: Wed Oct 10, 2007 11:16 pm

848cc

Joined: Sun Jan 07, 2007 3:22 pm
Posts: 249
Location: narrogin w.a

[img][img]http://i152.photobucket.com/albums/s193/suffolk_photos/su002.jpg[/img]
This is on a twin setup and has 2 bearings each side of throttle shafts..cheers[/img]

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drmini in aust

Post subject:

Posted: Thu Oct 11, 2007 9:52 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39764
Location: near Baulkham Hills, NSW

Very nice...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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