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twin su manifold,carbies to close to extractors?

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osk80

Post subject: twin su manifold,carbies to close to extractors?

Posted: Wed Jul 15, 2009 10:38 pm

848cc

Joined: Fri Apr 10, 2009 7:16 pm
Posts: 220
Location: on the yellow brick toad Brissie

I have manifold part no aeg 347,and the bowls sit very close to the extractors . i have a spacer onbetween carby to manifold. Do i need / can i get wider spacers?
thanks up front.

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drmini in aust

Post subject:

Posted: Wed Jul 15, 2009 10:54 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39763
Location: near Baulkham Hills, NSW

Just use 2 spacers. This adds volume and length to the inlet tract too. Better for torque.

_________________
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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mini_mad_matt

Post subject:

Posted: Thu Jul 16, 2009 8:13 pm

1098cc

Joined: Tue Aug 05, 2008 8:03 pm
Posts: 1479
Location: Qld, Brisbane

Should also have a heat shield too shouldnt it?

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osk80

Post subject:

Posted: Thu Jul 16, 2009 8:45 pm

848cc

Joined: Fri Apr 10, 2009 7:16 pm
Posts: 220
Location: on the yellow brick toad Brissie

I got a pair of spacers from a MG specialist today.Now it looks like i'll have to get longer studs or try bolts , its been segested to use unc threaded bar cut to length. any idears?

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drmini in aust

Post subject:

Posted: Thu Jul 16, 2009 10:13 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39763
Location: near Baulkham Hills, NSW

Yep UNC threaded rod is fine.
You can also use long UNC setscrews (ie fully threaded bolts) from Supercrap, and cut the heads off. These are Grade 5 hi-tensile steel.

_________________
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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