Silver rat look 240z

johnymd

johnymd

Club Member
A little progress. Welded the lambda boss on the manifold. Had a spare crank pulley machined with a spigot to centre the trigger wheel and fitted it to the engine so I could measure up for the pickup bracket. The temp sensors and crank pickup arrived so I'll start getting things back together again.
 

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johnymd

johnymd

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Progress has been a little slow as I've been suffering with a back issue but things have moved forward. Dean came over last Saturday and took on the job of finding a solution for a throttle cable setup which saved me another job and works well. I installed a swirl pot in the engine bay and plumbed in all the pipework for filter and HP pump. Finalised all the sensors and vacuum hoses. Fitted a lift pump by the tank yesterday and put the radiator back in so I'm now just left with the wiring. My mate Ian has ordered an ecu connector and all the sensor plugs and relays. He has also committed to making the loom one evening this week and doing some mapping on Saturday. He is extremely busy with his own stuff plus has 2 customer cars coming this week for complete custom looms so mine may get pushed back :(
 
johnymd

johnymd

Club Member
I was looking for a 1/2Lt pot but could only get a 1Lt version. I got one from ebay at £60 and modified it to fit in the location I had in mind. My blue car has it located by the tank but access is poor in this area so this time I've gone for the engine bay. I was looking for a clean engine bay look so may change its location in future. At the moment I'm just trying to get things up and running and so will readdress various things when I come to "detailing" the entire engine bay.
 
S

status

Well-Known Forum User
I think I'll go for the smaller pot,I get fuel starvation when cornering hard and a small pot should keep the fuel coming in,but I might be wrong
 
johnymd

johnymd

Club Member
the swirl pot should be full to the brim for most of the time and only start emptying when fuel is not coming from the main tank. The level will then start to drop. The smaller the pot, the less time you have before it empties or gets low enough to stop supplying fuel to the engine. The bigger the pot, the less chance of it emptying. Its hard to find 1/2lt tanks for this reason.
 
datsun dave

datsun dave

Club Member
johnymd said:
the swirl pot should be full to the brim for most of the time and only start emptying when fuel is not coming from the main tank. The level will then start to drop. The smaller the pot, the less time you have before it empties or gets low enough to stop supplying fuel to the engine. The bigger the pot, the less chance of it emptying. Its hard to find 1/2lt tanks for this reason.
Click to expand...


On my RB conversion we also ran the fuel return line back to the swirl pot.
 
johnymd

johnymd

Club Member
Yes Dave. Main tank supply line through lift pump to swirl pot. Return from top of swirl pot back to main tank. Feed from bottom of swirl pot to HP pump and to fuel rail. Regulator return feed back to swirl pot. You basically have 2 separate loops.
 
johnymd

johnymd

Club Member
Started the loom today. I've moved up from "back of a fag packet" drawing to old LP sleeve.
 

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johnymd

johnymd

Club Member
Finished laying all the wire and made good progress with the raychem sleeving. I'll Cary on tomorrow.
 

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johnymd

johnymd

Club Member
Loom finally ready to test in the car. Not totally finished as it will only be glued and sealed once the engine up and running with everything working as it should. We configured the ecu for the l series and tested all the I/O's on the bench so ready to start the car in the morning.
 

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johnymd

johnymd

Club Member
All the fuel system is done. Lift pump at the back using the factory wiring. HP pump in the engine bay, controlled by the ecu, along with swirl pot and filter/regulator.
 
johnymd

johnymd

Club Member
I think I am actually there now. With the loom in the car this morning it was time to give it a go. My mate Ian came over and we did a bit of temporary wiring to test things and it was soon time to try starting the car. We used the map from the 1jz as a starting point to see if it would run. The video is the actual first try to get it running. Initially there was air still in the fuel lines but it soon started to clear. This was initially with the ecu just controlling fuel and the old distributor and points used for ignition.

https://www.youtube.com/watch?v=rdfqnmIl4oo&t=46s
 
Rob Gaskin

Rob Gaskin

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Staff member
Site Administrator
John, you have brought a big smile to my silly face. Well done mate, I really admire your approach to motoring and it's challenges. :thumbs:
 
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