Belt Size for Just Under-driving Power Steering

[eacmen]

Anyone out there using under-drive pulley just for the power steering pump? If so, what belt size are you running. Finding 6PK1460 (stock) is too small and 6PK1538 is too long.

[Tbonem3]

The # is the length in millimeters (in case you didn't know) so maybe you can find a belt in-between the 6PK1460-1538 range? Might have to search Conti's own catalogue or something. Doubt anyone is running just the p/s or just he w/p pulley alone.

In case you can't find Conti -

https://www.amazon.com/Bando-6PK1500-Quality-Serpentine-Belt/dp/B000CB0KJI?th=1

[eacmen]

Thanks tbone, Conti does not make a 6PK series belt between these two sizes. Bando one might be the only option.

Update: was able to get the stock belt on with the aide of a helper to hold the tensioner in place. Belt doesn't seem overly tight, just a pain to get on.

Reason I am trying this franken-setup is I am experimenting with a couple different things. Noticed voltage dips going into slow corners on track, so I swapped out turner alt pulley for stock. Now I am testing the affect of under-drive water pump and stock on cooling.

[old///MFanatic]

I replaced my belt for the AA kit, using both PS, WP, (*not alternator) and the belt from Continental is 6PK 1538.
As you’ve found the tensioner will take up some slack.

[Tbonem3]

Ya if you're just testing, as long as the tensioner picks up the slack it should serve your purposes, just might not be good enough long term? I wish we knew the range, in millimeters, that the tensioner can handle.

[eacmen]

I replaced my belt for the AA kit, using both PS, WP, (*not alternator) and the belt from Continental is 6PK 1538.
As you’ve found the tensioner will take up some slack.

Yeah the 1538 is WAY too lose. You can put it on without even moving the tensioner!

The 1460 is very tight but will fit. The tensioner did move a little when released. There is still slack in the belt. Started her up and no bad noises so I think it's good to go.

[old///MFanatic]

Yeah the Alternator pulley isn’t as large an increase in size as the WP/PS.