Shim oil pump or not?

[Kevin]

Quick question guys.. i recently bought a very low mileage oil pump.
so i am planning on shimming it. i went to do it and took off the bolt and this is what came out..

the bolt on top of the hollowed bolt is waht confuses me.. looking at the diagram here
http://www.supramania.com/forums/showthread.php?t=4419&highlight=shim+oil+pump
there is no bolt between the spring and the hollow bolt. does that mean my oil pump was already shimmed by previous owner? lol

---------- Post added at 10:41 AM ---------- Previous post was at 10:39 AM ----------

btw that brown bolt seems to fit inside the hollow bolt perfectly. and the hole seems to be perfect size too. and the bolt height seems to be about 5mm too lol

 

[black89t]

looks like somebody already shimmed it. although you might want to shim it more. 7-10mm seems to be the norm. btw most 10mm nust are 5mm thick.



and brand new there isn't a 10mm nut inside the plug...

 

[Kevin]

hmm ok thanks. so 7-10mm? where does that number come from? looking at shaeff's thread he says 5mm its good enough?

 

[jdub]

That pump was already shimmed - might want to get a new spring from Toyota and check the clearances on that "low mileage" pump.
5mm is plenty.

 

[black89t]

oh god....so over 5mm is to much? :aigo:


i shimmed mine to about 7-8mm because i read from 5mm (jdub) to 10mm (adjuster). then how some went to 12mm. the 7-8mm was pretty tight since it was on a new pump. does anybody know when the spring starts to bind? even though i'm not about to pull my motor out just to unshim it a couple mm.

 

[jdub]

You should be ok - the spring will start to bind at ~11mm. 5mm is still plenty

 

[black89t]

cool.

thanks for the info.

 

[Kevin]

so how'd you guys get the bolt back on.. its pretty hard
lol. if theres no trick.. i just keep trying

 

[black89t]

^i agree. it was pretty tough. i just pushed on the back of the plug with my right hand and turned it with my left. took a couple trys. i did this with the engine on the stand and the pump bolted down too. i think that should help. it helps hold the pump in place while you go at it with that little plug. lol.