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Posted

Thanx. I  so glad I went with this colour now. I have never seen one this colour

In real life and I must say it looks much better than it does in the photos.

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Posted

Best Color for a 240z ever! Seriously it's 1 of the best factory colors and hardly any of the 240z's left have it. You made a great decision.

 

My 240z was originally silver but not sure I like the factory shade of silver so much on the Z. If it was lime like yours I would have definitely gone that color though :)

Posted

Now that the body is almost painted i need to think about getting the motor ready to fit.

while i have the engine on the engine stand i will replace all the gaskets and seals as well as the cam belt and water pump. and give the engine a general clean up.

I have most things that i need to get the rb20 in and running but one thing i need is a fuel delivery system. I recently purchased a surge tank but i still need the lift pump and  main pump. I will probably use a vl turbo for the main pump but i am on sure what pump i will use for the lift pump. dose any one have any suggestions?

 

IMG_11901.jpg

Posted

not sure a bicycle pump will do  :P :P

Lol

Maybe you could wear some old Reebok pumps and plumb them into the fuel system.

Then while you drive, bend down and squeeze the little basketball on the tongue. Job done!

8) 

Posted

High volume, low pressure.

Believe it or not, looking in the Prehistoric pushrod piece of sh$# catalog will give you a good start.

Holley make a very nice low pressure pump (holley blue)

Most muscle cars run quite well with them, they are often relying on it to fuel a big motor with big carbs.

Tis all about flow on that one.

Plumbing your return into the surge tank can also help reduce any issues with your lift pump not being up to scratch, although there is an argument that by not cycling the fuel back into the main fuel tank first, you can build up excessive heat in the surge tank.

Eg, the fuel is heated in the rail/lines in the engine bay, then cycled around the loop again, but not getting into the main mass of fuel in the tank to wash off heat.

My personal opinion is that if thats an actual problem, it'll never be an issue on 99% of the modded cars on the road.

Besides, the overflow from the surge goes into the main tank, and the volume and surface area of the return line under the car should wash off any residual heat that the fuel picks up on its very brief pass through the engine bay.

Posted

thanx mate that helps heaps. just before i red this post i put a bid on a holly blue as i rember that i used one on my injected and supercharged a14 in my old datsun 1200.

So if i run the the return in to the surge tank and then back in to the main tank. should i need to make the original return line to the main tank bigger? I don't want to if i don't have to because i hate welding petrol tanks

Posted

Hi Mick, good to see your car is coming along.

I've had trouble with a Holley blue recently and replaced it with a similar Carter unit, bit cheaper and actually quieter.

Roger

 

 

Posted

Hi Mick, I run a Holley Blue on mine with the return going back to the surge tank.  Seems to work well and yes they are very noisy!

 

Do you run yours with a regulator. Or do you use the full 14 psi?

Posted

Hey Mick

 

I am not a fan of Holley Blue's due to the noise they make, and they provide more volume than you will need for an RB20. On my 400HP L28/240Z, I run a medium size Walbro inline pump to feed the surge tank, and a Bosch xx 090 pump as the main pressure pump (drawing from the surge tank). The 'lift' pump doesn't need to have the capacity of the main pump because its feeding fuel at no pressure, while the main pump has to maintain required fuel flow rate at 350kPa. The lift pump draws from the original tank pickup and fills the surge tank, and I run a 6mm overflow from the top of the surge tank back through the factory return port on the tank. That way the surge tank is kept full at all times, and passes excess flow back to the main tank. The main pump feeds the fuel rail and the excess flow is fed back to the surge tank. This way there is a degree of mixing and keeping the fuel cool in the surge tank. I have never had hot or cold fuel handling isses on hot or cold days.

 

Cheers

 

Jamo

Posted

Do you run yours with a regulator. Or do you use the full 14 psi?

 

Nah, no regulator on the lift pump, just on the pressure pump from the surge tank. The lift pump should never see much pressure anyway as it only has the resistance of the lines. I have a return from the top of the surge tank back to the main tank the same as Jamo.

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