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SU high performance gaps
https://www.ausmini.com/forums/viewtopic.php?f=2&t=13067
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Author:  deleted [ Fri Nov 11, 2005 10:23 pm ]
Post subject:  SU high performance gaps

SU carbie spacers.

my 1 1/4 carbie has a half cm spacer between the carbie and manifold, without this, the manifold bolts hit the carbie body and you cant tighten it up (there is a half cm gap between).

i have a 1 1/5 carbie, there is about say 4 cm of thread on the manifold bolts, and these are hitting against the carby body, there is about a 3/4 cm gap between the carbie and manifold at this point (I dont have a spacer)

Do i need a spacer??

why are the manifold bolts so long??

Could i instead just saw 2cm from the thread and bolt it up with no spacers, or does the spacer provide some other purpose??

Author:  drmini in aust [ Fri Nov 11, 2005 10:29 pm ]
Post subject: 

The spacer adds some volume to the manifold (and clearance behind the throttle plate) and this improves airflow.

Author:  deleted [ Fri Nov 11, 2005 10:41 pm ]
Post subject: 

Thankyou for your prompt reply Dr :)

Author:  deleted [ Sun Nov 13, 2005 8:48 pm ]
Post subject: 

What is the width of 1 1/5 SU spacers ?

I might need to get one laser cut.

I would say 10mm or more?? (ii havnt got one to look at)
Or does anyone have one i can have? :D

Author:  drmini in aust [ Sun Nov 13, 2005 9:14 pm ]
Post subject: 

I would guess the 1-1/2" one is 10 or 12mm thick.
Hey, any Mini joint would have these S/H, they are alloy... :wink:

Author:  deleted [ Mon Nov 14, 2005 9:38 pm ]
Post subject: 

but any mini joint charges me a fortune!!

Ok this plate wasnt too bad, the gaskets wernt exactly cheap though.

So i have purchased it, does anyone have any engine bay pics of their own 1 1/2 carb on manifolds so i can ahve a look.

My air filter is mounting facing the opposite direction to the front of the car (the spout that the 1 1/4 filter mounts on is not on this 1 1/5, is this normal)

I would thinkmounting it here would be very bad for air flow +its in the way of my speedo cable!

It also appears as if this carb is a mirrored one?


anyway, any pics of 1 1/5 in engine bay if you could thanks!

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