R33Gtst->Fuelrail+Injectorchange->Tips?

[Torques]

Hi there,

Just wondering If I want to change the fuel rail+injectors do

I have to remove the plenum?

Also it seems the plenum is split in the middle (made of 2 parts)

so would it be an option to just remove the upper half of it to gain access?

Thanks ...

[DVS JEZ]

Can take the throttle Body off and work them up through the gap

[gotRICE?]

Nah you dont need to remove the plenum.

Have just recently done it.

Remove the throttle body is as far as you need to go. Splitting the manifold is actually harder than it sounds.

Everything is reachable. But when you undo the bolts for the rail, watch out for the black plastic spacers. They are tricky to find if the fall haha

[Torques]

Sounds good .. the less parts I have to remove the better

While at it I was thinking to mount a fuel pressure regulator as well.

Is there anything I have to be aware of?

I have not bought one yet, was thinking SARD or Tomei?

(dunno if these are Chinese copies though ..)

http://www.ebay.co.uk/itm/TOMEI-FPR-fuel-pressure-adjustable-regulator-FREE-GAUGE-/160623636990?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2565ea31fe

or

http://www.ebay.co.uk/itm/NEW-SARD-fuel-pressure-adjustable-regulator-RED-GAUGE-/160624021320?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2565f00f48

Nah you dont need to remove the plenum.

Have just recently done it.

Remove the throttle body is as far as you need to go. Splitting the manifold is actually harder than it sounds.

Everything is reachable. But when you undo the bolts for the rail, watch out for the black plastic spacers. They are tricky to find if the fall haha

Edited July 23, 2011 by Torques

[gotRICE?]

You dont need a FPR. The stock one is fine Unless your doing something ridiculous power wise.

I actually took two RB25 fuel rails and injectors off on saturday.

Undo the fuel lines, Take the throttle body off, undo all the injector plugs (squeeze them, the bit you squeeze is on the bottom annoyingly enough) squeeze hard as f**k, and it will "click". And slide off.

Then undo the three bolts holding the rail down. The bolt around the 5/6 intake runner is easier accessed if you unbolt the idle control. Then you can poke a long extension through and undo it no drama

Once thats done, lift the whole rail up, and the injectors will pop out. Watch the injector seals. Id recommended grabbing all 6 and taking them out, if you bump them, they can also disloge and fall into the abyss of tool/bolt swallowingness.. And of course, the pre-mentioned spacers.

Then proceed to gently pull the whole rail out towards the radiator.

Good luck!

[Torques]

Hi,

Thanks for that - very helpful!

As for the FPR .. I have a new fuel rail and need to check if the old FPR does fit ..

(I just had a quick check yesterday)

Cheers from London ..

You dont need a FPR. The stock one is fine Unless your doing something ridiculous power wise.

I actually took two RB25 fuel rails and injectors off on saturday.

Undo the fuel lines, Take the throttle body off, undo all the injector plugs (squeeze them, the bit you squeeze is on the bottom annoyingly enough) squeeze hard as f**k, and it will "click". And slide off.

Then undo the three bolts holding the rail down. The bolt around the 5/6 intake runner is easier accessed if you unbolt the idle control. Then you can poke a long extension through and undo it no drama

Once thats done, lift the whole rail up, and the injectors will pop out. Watch the injector seals. Id recommended grabbing all 6 and taking them out, if you bump them, they can also disloge and fall into the abyss of tool/bolt swallowingness.. And of course, the pre-mentioned spacers.

Then proceed to gently pull the whole rail out towards the radiator.

Good luck!