R34 4 Door Fuel Pump Install

[tommytomatoes]

Just went to install my pump on the weekend and I popped off the lid. I havent drained the tank yet but the pump looks far down, Im not even sure Ill be able to change it. [This is while having myself squashed in the trunk to take a peek lol] Took a look under the car and to drop the tank it almost looks as if you will need to drop the sub frame.

What does everybody do here? Im going to try draining the tank and sticking my arm in but it looks like itll be a pain in the arse. Thanks guys!

[V28VX37]

I'm pretty sure it's the same as the coupe i.e. access from the top. I had the workshop supply & fit mine in the 4door and from memory there wasn't much labour cost in it.

[Kinkstaah]

You have to do it through the lid.

It's entirely possible. Just reach on in.

To drop the tank you absolutely do need to drop the subframe... aaand in any case, you still have to go in through the lid.

Source: Changed the pump in my car approximately seven million times.

[tommytomatoes]

Thanks guys, will be on my list for this weekend.

[tommytomatoes]

So to pull the pump, its held on a bracket [see pic] that slides upwards, this is on the front inside. Size difference is obvious lol

Put in a Nismo R34 GTR pump as the GTT version doesnt flow enough for what I need. It is a tight fit and some modification is required. Ended up:

Trimming the feed line above the pump just below the upper notch as the pump is way taller.

Cut the size of the sock tube to put it roughly in the same place as the OEM pump sock.

Trimmed a bit of the bottom of the bracket [sock wont line up to bottom slot due to pump being wider]

Worm clamped it to the side of the bracket.

Trimmed one of the insulation tabs due to it pressing against the tank.

At this point Im hoping it doesnt make too much noise being against the tank, but only time will tell.

The good news is the connector fits right into the lid so no need to swap connectors, left the smaller ground alone as I have previously read it is not req for install. I have the tomei pump relay harness which will be installed soon to skip the modulator. Didnt know that some R34 GTR's have the battery in the trunk so I will be running a wire after the fuse to the back of the car and grounding the negative.

Edited July 23, 2015 by tommytomatoes