D&C Extreme Power Steering Pump - Scout II

[SF79SII]

Has anyone here installed the D&C Extreme power steering pump with the press on pulley on your 76-79 Scout II? If so, any problems with installation or performance? It is supposed to be an upgrade over the OE pump with a larger reservoir. I have a 1979 Scout II with a worn out pump and need to replace it. I don’t like the idea of buying a rebuilt Cardona or other replacement pump with potentially an incompatible return hose connection, and I’d rather not rebuild the pump I have. D&C claims that the return line connection on its pump is compatible. It’s about $300 which isn’t too much more than a new OE unit. Your feedback is appreciated.

 

[Zaedster]

Hi,

Thank you for participating in our IH Parts America forum. We appreciate your engagement and aim to keep discussions focused on the products we offer in our stores.

Regarding your question about power steering pump pressure, higher volume is generally more beneficial. The Scout II has too small of a pulley, which creates more heat in lifted applications or larger tires. Increased pressure can lead to more bypass and heat generation. We offer new power steering pumps and reman, which have a good track record.

Modifying a power steering pump to increase pressure typically involves physically adjusting the rotor within the pump housing (which is a machined rotor that can't be adjusted unless you change it with a custom one). However, I've personally examined "high-pressure" pumps from other vendors and found them to be identical to standard off-the-shelf pumps.

If you wish to support us: https://www.ihpartsamerica.com/store/sii-pwrstr-pmp-new.html

 

[harrywt]

Hi,

Thank you for participating in our IH Parts America forum. We appreciate your engagement and aim to keep discussions focused on the products we offer in our stores.

Regarding your question about power steering pump pressure, higher volume is generally more beneficial. The Scout II has too small of a pulley, which creates more heat in lifted applications or larger tires. Increased pressure can lead to more bypass and heat generation. We offer new power steering pumps and reman, which have a good track record.

Modifying a power steering pump to increase pressure typically involves physically adjusting the rotor within the pump housing (which is a machined rotor that can't be adjusted unless you change it with a custom one). However, I've personally examined "high-pressure" pumps from other vendors and found them to be identical to standard off-the-shelf pumps.

If you wish to support us: https://www.ihpartsamerica.com/store/sii-pwrstr-pmp-new.html

a smaller pulley will make something spin faster. I honestly don't know the answer to this but why is that bad?

 

[ihpartsjeff]

a smaller pulley will make something spin faster. I honestly don't know the answer to this but why is that bad?

Spinning it faster makes the pump 'deadhead' against the pressure relief when in the upper engine rpm's. Doing this builds heat which eventually boils the fluid, cavitates the pump and eventually kills the pump or worse the steering box too.