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Can Someone Fast Me The Part Number For M35 Fuel Pump

danwatt

By danwatt,
in Four Door Family & Wagoneers

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chook Mentor

chook

Posted
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Here they are, consider aftermarket bolt-in or you may just have some contamination, very fine tolerances inside the pump. Just the act of removing it, draining it and cleaning filter may fix it.

post-780-1238314500_thumb.jpg

danwatt Collaborator

danwatt

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Here they are, consider aftermarket bolt-in or you may just have some contamination, very fine tolerances inside the pump. Just the act of removing it, draining it and cleaning filter may fix it.

I would consider after market but what should I get ?, Would prefer something that bolts straight in.

Thanks for your help

chook Mentor

chook

Posted
Posted

I think the factory pump will put you close to $1k mark. The M35 uses the same pump as the V35 skyline according to FAST. If you check ebay and heaps of US sites there are many aftermarket pumps available for the G35 infinity (same as V35), dephi, walbro and bosch etc, these are for 3.5 NA not your 2.5 turbo, so might take some more research.

KiwiRS4T Grand Master

KiwiRS4T

Posted
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I would consider after market but what should I get ?, Would prefer something that bolts straight in.

Thanks for your help

If you pay someone to install a Walbro or a Bosch you will probably still come out cheaper than a stocker and have a better pump as well (but as Simon says, change/clean your filters first).
danwatt Collaborator

danwatt

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If you pay someone to install a Walbro or a Bosch you will probably still come out cheaper than a stocker and have a better pump as well (but as Simon says, change/clean your filters first).

Thanks for that I will do so, DO you know if the Walbro pumps are fitted inside the tank like the standard ones ?.

Another thing I noticed with the M35 is that the pump has 4 wires controlling it and that it is variable speed.

The extra wires are not the sender unit as this is mounted on the other side of the tank.

andy65b Veteran

andy65b

Posted
Posted
Thanks for that I will do so, DO you know if the Walbro pumps are fitted inside the tank like the standard ones ?.

Another thing I noticed with the M35 is that the pump has 4 wires controlling it and that it is variable speed.

The extra wires are not the sender unit as this is mounted on the other side of the tank.

I did some more research on the weekend end and I stand corrected.

It looks like one side is the Fuel pump, the other side is the fuel gauge.

Cheers

Andy

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted
Thanks for that I will do so, DO you know if the Walbro pumps are fitted inside the tank like the standard ones ?.

Another thing I noticed with the M35 is that the pump has 4 wires controlling it and that it is variable speed.

The extra wires are not the sender unit as this is mounted on the other side of the tank.

My Walbro is intank. Bosch do an intank and outside pump - probably easier to stick with the intank. Haven't sussed out the wiring yet . Apparently S1 has two power levels to pump maybe yours is variable. I plan to change mine to full voltage (13.8v) as it seems there is normally a resistor in place and walbro need full current to perform to max. I will have to do some more research (plently of info in general skyline pages).

danwatt Collaborator

danwatt

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My Walbro is intank. Bosch do an intank and outside pump - probably easier to stick with the intank. Haven't sussed out the wiring yet . Apparently S1 has two power levels to pump maybe yours is variable. I plan to change mine to full voltage (13.8v) as it seems there is normally a resistor in place and walbro need full current to perform to max. I will have to do some more research (plently of info in general skyline pages).

I checked it out today and removed the original pump and its a 2-wire job where the other two are for the fuel level. When i measure the voltage @ idle its 13.8 V all the way to redline so no variable fuel stuff.

Ordered a Walbro intank so will put this in when it gets here.

FYI nissan wanted $450 for the pump.

iamhe77 Grand Master

iamhe77

Posted
Posted (edited)
I checked it out today and removed the original pump and its a 2-wire job where the other two are for the fuel level. When i measure the voltage @ idle its 13.8 V all the way to redline so no variable fuel stuff.

Ordered a Walbro intank so will put this in when it gets here.

FYI nissan wanted $450 for the pump.

Which Walbro did you order (part#)?

Or was it for a VQ35?

Edited by iamhe77
danwatt Collaborator

danwatt

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Which Walbro did you order (part#)?

Or was it for a VQ35?

It was the GSS342, used in G35 & 350Z. Had a better spec than the stock nissan one, I guess Ill have to wait and see if the results are worth it. I guess it has to be since the stocker is shot.

danwatt Collaborator

danwatt

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AFAIK they are 255L/hour hi-pressure??

the stock FPR should take care of any additional pressure

Thats right, Not sure what the fuel pressure is on VQ25 but hopefully it should work ok.

Might be a little richer though and need a tune.

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