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Spool Rb32

045HOW

By 045HOW,
in Engines & Forced Induction

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GTScotT Grand Master

GTScotT

Posted
Posted

Apologies I thought you were unaware of the rb34 kit and had just noticed the rb32 kit.

Why would you choose the rb32 over the rb34? Cheaper? Rev higher?

RB34 requires some block machine work AFAIK, RB32 should be bolt in and go.

  • 2 months later...
4PIMPN Apprentice

4PIMPN

Posted
Posted

on the spool webiste they have done a comparison chart between a rb30 and their rb34. bit of a increase has been achieved. http://www.spoolimports.com/articles-1/rb34det-results. as for brand comparisons dyno charts, it will probably never happen as not one workshop will see the same style of car, same style of setup do to this unless they cough up the coin themselves to carry out the tests.

045HOW Mentor

045HOW

Posted
  • Author
Posted

on the spool webiste they have done a comparison chart between a rb30 and their rb34. bit of a increase has been achieved. http://www.spoolimpo...rb34det-results. as for brand comparisons dyno charts, it will probably never happen as not one workshop will see the same style of car, same style of setup do to this unless they cough up the coin themselves to carry out the tests.

This thread is not about RB34. There is already an RB34 thread.

rob82 Mentor

rob82

Posted
Posted

on the spool webiste they have done a comparison chart between a rb30 and their rb34. bit of a increase has been achieved. http://www.spoolimports.com/articles-1/rb34det-results. as for brand comparisons dyno charts, it will probably never happen as not one workshop will see the same style of car, same style of setup do to this unless they cough up the coin themselves to carry out the tests.

I'm surprised they didn't lose any hp in the top end due to the smaller bore/stroke ratio. I would say there head was flowing quiet well!

The rb34 bore/stroke ratio is less than an xr6t and those things just don't like to rev over 6500.

045HOW Mentor

045HOW

Posted
  • Author
Posted

I'm surprised they didn't lose any hp in the top end due to the smaller bore/stroke ratio. I would say there head was flowing quiet well!

The rb34 bore/stroke ratio is less than an xr6t and those things just don't like to rev over 6500.

They used a standard NEO head and said a lot more could be done if the head had have been flowed to accommodate the larger displacement.

  • 7 months later...
Gerg_R31 Mentor

Gerg_R31

Posted
Posted

True 3.2? does litre actually matter or stroke? When is the point where longer stroke stops making power?

and creates less?

Spool 3.2 stroke 91mm

86mm bore 3.17

86.5mm bore = 3.2

87mm bore = 3.24

Nitto 3.2 stroke 90mm

86mm bore = 3.14L

86.5mm bore = 3.17L

87mm bore = 3.21L

I personally think these cranks are similar as in the rips main caps and cradle and the spools version not long after

but just ask yourself, why is something cheap? What did they cut out? Was it just to make it sell easier? Or was there something that just wasn't needed?

  • 2 months later...
KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

I'm surprised they didn't lose any hp in the top end due to the smaller bore/stroke ratio. I would say there head was flowing quiet well!

The rb34 bore/stroke ratio is less than an xr6t and those things just don't like to rev over 6500.

I think Rips latest engine in the Stagea will be revving at least 9000 but he is being a bit cagy about the actual size. I would guess its a 3.2 although he could be experimenting with something bigger.

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