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Powersteering Bracket

The Bogan

By The Bogan,
in Engines & Forced Induction

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The Bogan Grand Master

The Bogan

Posted
Posted

Instead of modifying the RB25 one will the RB30 E one fit with the 25 pump, I would rather a straight swap over trying to modify the one on it, my problem is the 5 mm offset that is causing the power steering belt to come of at high RPM.

And I did search but only found that a RB30E bracket might fit.

Thanks, Mark

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https://www.sau.com.au/forums/topic/349714-powersteering-bracket/
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tm_r33 Experienced

tm_r33

Posted
Posted

i just use the rb25 one i think. unmodified. just had to put spacers between the bracket and the block on two or the three mounting points. from memory this was only because the aircon pump bracket used to go between the block and the powersteer pump bracket on the rb25. so now that i dont run the aircon bracket on the 30 i needed to chuck about 30 mm of spacer in on two of the bolts.

*i think* lol.

JonnoHR31 Grand Master

JonnoHR31

Posted
Posted (edited)

cant remember exactly but i'm pretty sure the only different is the one bolt hole. i compared a 30e and 25 bracket when doing the conversion and thats the only difference i noticed. went from using the 25 bracket on the 25 to the 30e bracket on the 30det with no dramas, re used the old belt and its never come off.

Edited by JonnoHR31
The Bogan Grand Master

The Bogan

Posted
  • Author
Posted

Sadly the RB30 bracket will not accept the 25 pump and the top bolt hole also doesnt line up with the 25 head anyway, UNIGROUP are making a bracket up now so all is well.

Modified = good-Standard = bad

Thanks, Mark

dorifticon Community Regular

dorifticon

Posted
Posted

On the rb26, the top bolt hole doesn't line up because on the 2.6 motor the top bolt is in the cylinder head, and on the 3.0 it's in the block. Pretty sure it's the same for the 2.5.

The RB30 bracket has all the mounting bosses at the same depth, but on the 2.6 the top hole has a thicker casting. I tried to use the rb30 bracket, but it sits the pump too far back.

Easy solution is to just hacksaw off the excess material from the 2.6 bracket, the cast iron is pretty soft and it's not difficult or time consuming to get a nice cut that sits everthing neatly and then you know you're belt lines up straight. I haven't had any problems with mine after 2000 kms.

My 2c.

The Bogan Grand Master

The Bogan

Posted
  • Author
Posted

On the rb26, the top bolt hole doesn't line up because on the 2.6 motor the top bolt is in the cylinder head, and on the 3.0 it's in the block. Pretty sure it's the same for the 2.5.

The RB30 bracket has all the mounting bosses at the same depth, but on the 2.6 the top hole has a thicker casting. I tried to use the rb30 bracket, but it sits the pump too far back.

Easy solution is to just hacksaw off the excess material from the 2.6 bracket, the cast iron is pretty soft and it's not difficult or time consuming to get a nice cut that sits everthing neatly and then you know you're belt lines up straight. I haven't had any problems with mine after 2000 kms.

My 2c.

My main problem apart from the top bolt which would need some fab work is the pump has different adjustment points, the 25 had a threaded rod where the 30 uses a slot in the bracket so I would need to swap from the 25 pump to a 30 pump, Its going to be much cheaper to fab up a plate and use the 25 bracket instead of replacing the whole set up.

Mark.

tm_r33 Experienced

tm_r33

Posted
Posted

use the 25 pump on the 25 bracket on he 30 block. and yer ur on the money, i went to use 30 bracket but the 25 pump wouldnt fit the 3 litre bracket so i used the 25 bracket and spaced it out im pretty sure.

The Bogan Grand Master

The Bogan

Posted
  • Author
Posted

A bracket was made to join the lower fixture points and the top fixing point on the bracket was milled out to allow it to move forward about 3mm so that the H/balencer and P/steering pump idlers line up.

She revs to 7.2k now without throwing the belt onto the under tray, WIN.

  • 2 weeks later...
  • 3 weeks later...
  • 2 weeks later...
The Bogan Grand Master

The Bogan

Posted
  • Author
Posted

either use the 30 bracket or cut the excess off the top lug of the 25 bracket. easy

If youve got the 30 pump thats fine but if your using the 25 one you need to mod the bracket at the bottom with a plate and remove 5 mm from the rear of the top hole to allow the pump to move forward 5 mm.

The 26 pump/bracket is different again Im told.

Mark

  • 4 months later...

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