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Hr31 Coupe Rb26 (For Now)


DCIEVE

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Thanks gents.. the manifold really is a very nice thing to look at.

Mr Baron - yes full race manifold. Geoff talked me into an 88-75 with 1.00ar rear, it will be replaced by an efr down the track once they're 'sorted' and available (there was a lot of negativity around the time I ordered so I thought I'd bide my time!).

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Thanks gents.. the manifold really is a very nice thing to look at.

Mr Baron - yes full race manifold. Geoff talked me into an 88-75 with 1.00ar rear, it will be replaced by an efr down the track once they're 'sorted' and available (there was a lot of negativity around the time I ordered so I thought I'd bide my time!).

Great stuff... interested in seeing the results.

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cool. the 88-75 should be pretty good. it's still a 2.6 yeah?

It will be going on an rb30 bottom end. I spent a bit of time talking it over with Geoff and he convinced me the 83-75 is perfect on an rb26 but too small on a 30. We will see I guess!

Have you by any chance test fitted the manifold on the engine in the bay? How would it go for room running the ext gates with how the inlet pipes are sitting now?

I've only trial fitted the manifold using a gt35 on the old rb26 (pics at the bottom of the first page) - the manifold fouled on the steel hr engine mounts but the extra deck height on the rb30 should clear that up. The front gate sits pretty close to the strut tower and the gate plumbing is going to be interesting. The inlet and ic pipes shouldn't be an issue though.

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  • 5 weeks later...
  • 1 month later...

Have you by any chance test fitted the manifold on the engine in the bay? How would it go for room running the ext gates with how the inlet pipes are sitting now?

Hey Corey - a good mate lent me his spare 26/30 to trial fit various bit's and pieces so I can answer you now. The manifold places the turbo higher than the motor, I have only a few mm clearance between the bonnet and comp cover (less than I have btw the motor and bonnet). The front waste gate sits pretty close to the strut tower as well. As mentioned before the gate plumbing will be fun.

rb30trial_02.jpg

rb30trial_01-1.jpg

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Few more pictures/updates given there isn't much real progress :P

Was disappointed to find the ati balancer fouls on the radiator when the pump drive is fitted so it's for sale and will be replaced by a custom (shorter) balancer. Hopefully the Ross alternative is as good as the ati...

Still waiting on the new head from Brad, it's coming together with a big single pump which should be a lower risk option than running a couple 044's in parallel.

Sound deadening is all gone, rebuilt and powder coated the pedal assembies & now in the middle of putting it back together. Turns out hr's come with n1 spec brake booster so it's off for a rebuild.

interior_05.jpg

Dummied up the rail and 1600cc injectors on the old motor to check fitment.

injrail_01.jpg

Fuel cell complete with e85 specific foam and a couple of curious russians!

fuel_cell_01.jpg

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Hey Corey - a good mate lent me his spare 26/30 to trial fit various bit's and pieces so I can answer you now. The manifold places the turbo higher than the motor, I have only a few mm clearance between the bonnet and comp cover (less than I have btw the motor and bonnet). The front waste gate sits pretty close to the strut tower as well. As mentioned before the gate plumbing will be fun.

rb30trial_02.jpg

rb30trial_01-1.jpg

That is a nice tight fit. Looks awesome sitting in there though. I have a 31 sitting next my 32 at home will have to take some measurements the fullrace mani is absolute porn.

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