VRO Pump Interchange.

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Bassboat101

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Jun 28, 2007
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I have a 1986 GT 150 that the oil pump ingested water and as a result killed a cylinder. Compression test was all cly 90-95 and 1 with 25 psi.
My question is that I see a lot of vro pumps on ebay off of v-8 engines with different part numbers than " i shop marine" calls for this motor,some even say that their pump will fit all motors that use vro pumps. I don't want to pay $330 dollars for a new pump. I would think that they would be calibrated different
 
tashasdaddy

tashasdaddy

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Nov 11, 2005
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51,019
Re: VRO Pump Interchange.

use the one for your engine. also consider deleting the vro, and going premix. the 80's vro's have proven to be troublesome.
 
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Bassboat101

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Jun 28, 2007
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Re: VRO Pump Interchange.

I believe the pump was working but was pumping water instead of oil, the engine died twice and did not want to restart until 5 or 10 min.
Since the vro had water in it, should I replace it before a rebuild? I still need interchange information.
 
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seahorse5

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Jan 24, 2002
Messages
4,698
Re: VRO Pump Interchange.

Bassboat101 said:
still need interchange information.
Click to expand...


From the VRO story:

...Do not interchange any of the springs with other pump assemblies. They are calibrated for each model of pump.


The latest P/N 5004558 (superceded to 5007420) pump is a universal fit that can be used as a replacement for all VRO equipped motors and each part is available for servicing....
 
B

Bassboat101

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Re: VRO Pump Interchange.

Thanks Seahorse5
The next step will be to rebuild the powerhead.
 
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