ok so i just ordered this melling 10554 oil pump

http://www.summitracing.com/parts/MEL-10554/

iv been searching and i have been reading alot about the 10554 and using a high pressure spring...

is this the right spring to order

http://www.summitracing.com/parts/NAL-3848911/

and is this the right pickup?

http://www.summitracing.com/parts/MEL-155S/

what will my oil pressure be at around idle and like 2-3k normal driving??
also how do i change the spring?

 

The pickup depends on the pan you're using.

The 10554 comes with the Melling pink spring, the same as the GM spring, so you don't need that spring.

 

Oil pressure is a product of the pump plus bearing clearances. No one can tell you what your pressure will exactly be.

The spring is easily changed (if needed) by removing the bottom plate, knocking out the rolled pin, swapping spring, reinserting rolled pin and reinstalling the plate.

If that Melling pickup is exactly like the GM 12550042 , then it is the right one. I have not seen them side by side. Hard to tell by pictures, but it looks pretty close. It is definitely the right diameter for the pump.


http://shbox.com/1/oil_pump.jpg

 

ok thanks for the help shoebox...if the melling comes with a hp spring why does summit list it as regular pressure/volume?

 

I think it comes with two springs and you use your choice.

 

I recently purhased a 10554 and it did not come with 2 springs. I went ahead and got the white spring also. As shoebox said, it is a very easy swap.

 

ok so we never got t o the bottom of this.....why does the 10554 come with the pinkish purple spring if its stock pressure?

 

Mine came only a single "purple" spring. So I used the GM white spring.

 

does anyone know where we can find a color chart to reference the color vs the spring pressure?

i found this but it doesnt help much

http://www.melling.com/Portals/0/SPR...20announce.pdf


heres a link to the 10554 page on mellings website...they say its machined with the pink spring installed for higher pressure??? also says they include a yellow spring for low pressure?? can anyone shed light on this?

http://www.mellingselectperformance....nOilPumps.aspx

 

What is there to shine light on and what freaking difference does it make? Use the white or the pink spring. Same difference.

 

lol ok man sorry.. lmao i guess ill just order the gm spring

 

It just seems you are worked up over nothing. If you have the pink spring already, you are good to go. Again, the Melling pink and the GM white are both rated at 70#.

 

You have angered the Gods. I'd tell you to sacrifice a virgin, but I have no F'n idea where to find one around here

So how's that build going? Getting it done before you deploy?