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JamieXR

Big Barra BF Build

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 I called Brad (Atomic) when I installed my studs, as they wouldn't bottom. He told me that I needed to install 6 mm ball bearings into the block, so that they would. happen.  Not bottoming the studs may lead to inaccurate tensioning.

Edited by HI PSI

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On Saturday, February 27, 2016 at 9:42 PM, HI PSI said:

From memory, 6 mm ball bearings are meant to be inserted....

 

Once the main cap bolts are torqued up there is no way the studs will move

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Yeh. So it's to set the height.  And obviosly you don't want the stud turning while you are trying to tighten it.  

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The other parts of the build that I missed. We recently finished the head for the motor and consists of..

- Faced/glass beaded.

- Race ported head specs and port matched to the inlet manifold.

- Standard valve seats removed and larger aftermarket ones inserted to suit the oversize Supertech titanium valves inlet/exhaust with single groove collets.

- Supertech valve springs with titanium retainers.

- New lifters.

- Stock cams.

 

14627978_10209937867578612_2023887763_n.

14628048_10209937867338606_1482895878_n.

14642678_10209937868098625_195264666_n.j

14642965_10209937868378632_662649559_n.j

14643148_10209937868138626_1019387147_n.

14689257_10209937867218603_1767622009_o.

14694634_10209937867738616_217099812_n.j
 

Also finished of the surgetank set-up aswell...

- 3litre surgetank with x2 Walbro 460s inside, all factory lines removed and replaced with braided.

14694913_10209937868738641_1241202533_n.

Edited by JamieXR

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2 hours ago, JamieXR said:

The other parts of the build that I missed. We recently finished the head for the motor and consists of..

- Faced/glass beaded.

- Race ported head specs and port matched to the inlet manifold.

- Standard valve seats removed and larger aftermarket ones inserted to suit the oversize Supertech titanium valves inlet/exhaust with single groove collets.

- Supertech valve springs with titanium retainers.

- New lifters.

- Stock cams.

 

14627978_10209937867578612_2023887763_n.

14628048_10209937867338606_1482895878_n.

14642678_10209937868098625_195264666_n.j

14642965_10209937868378632_662649559_n.j

14643148_10209937868138626_1019387147_n.

14689257_10209937867218603_1767622009_o.

14694634_10209937867738616_217099812_n.j
 

Also finished of the surgetank set-up aswell...

- 3litre surgetank with x2 Walbro 460s inside, all factory lines removed and replaced with braided.

14694913_10209937868738641_1241202533_n.

 

Have you conducted a very close inspection of those cam shaft lobes. 

Edited by arronm

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probably the sexiest looking barra I have seen. Oversized valves hey? cant say I have seen or heard of that being done on the barra before. Im sure it has been though, what sort of power are you shooting for to be doing things like that?

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2 hours ago, barnz said:

probably the sexiest looking barra I have seen. Oversized valves hey? cant say I have seen or heard of that being done on the barra before. Im sure it has been though, what sort of power are you shooting for to be doing things like that?

 

Yeah we have the resources so thought may aswell, my old boy is an engine builder by trade and what ever it makes on 30psi..

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1 hour ago, JamieXR said:

Yeah of course, whys that??

 

Just what I observed from your images. Any signs of surface spalling will deteriorate very quickly with heavy valve  springs. You need to inspect the rollers as well. They have less surface area. 

 

just hate to see all that work and money end in damage. 

Edited by arronm

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