righteousrags88 Posted December 8, 2015 Report Share Posted December 8, 2015 So Im working on my 72 240z. I got a 78 280z that I purchased for the engine and tranny that I was gonna swap over to the 72. The engine has been built by the PO and I have the build sheet with copies of the receipts. Basically he temporarily put the stock cam back into but I wanted to run a more aggressive cam as the engine comp is 10.5. Also its FI but I have a set of triple 40dcoe webers that I wanted to convert it to. Im looking for someone around the Seattle area who knows these L series engines and with the parts combo that I have and want to put into it can put it all together and tune it for most optimal performance. Im not at the stage of where Im ready to put it into my 72 as its getting painted right now so Id want to use this time to button together and tune the engine so that when the time comes I can just drop it in. Feel free to message me and I can give my phone number and message you my build sheet. Thanks Igor Quote Link to comment
banzai510(hainz) Posted December 8, 2015 Report Share Posted December 8, 2015 do it your self. Just run it with the stock cam for now . Otherwise the other cam you have all the valve lash pad the correct size and retainers ect??????? Alot of what ifs on parts you have as we are not mind readers go to olddatsuns.com the tech section save this(bookmark this https://vimeo.com/19077890 theres a guy in auburn who just built a red 510 maybe you seen it around. but if the motor is together already I dont know what more you want. UNless you got the parts ready to go. Quote Link to comment
righteousrags88 Posted December 8, 2015 Author Report Share Posted December 8, 2015 Id have no idea how to swap to webers and tune them correctly. That and I think a stock cam is not really taking advantage of whats gone into the build which as a side note, I don't even know how to swap. Would love to watch and learn from whoever would take on the task so I could learn, Perhaps he can improve a few things along the way. I don't have another cam for it cause I don't know which profile would work best for my build. Heres a direct copy and paste of the build sheet the PO sent me. Perhaps it'll give a better understanding of whats its got and what it needs. So to begin: The engine is a combonatin of n42 block (contains more nickel) and a p90 turbo head that I had shaved .080" to raise compresison; this head style (with peanut shaped combustion chambers, allow for ping resistance: only run 91 or up). The cam towers were shimmed up this ammount as well. The valves were redone by Rebllo (three angles). The head was ported in the exhaust bowls to allow for better flow. The head was straightened. The cam was originally stage 1 but I replaced with stock hoping to source another stock cam for a regrind for a stage 2. The valve springs are Schneider performance springs from MSA, the lash pads are hardened steel pads from JDM customs, the valve colets are from Z Car Source of Arizona. The timing kit is from ITM and the rockers are factory. Fel Pro gaskets were used. Valve seals were also fel pro. The n42 block was bored over .020" over I believe, and hot tanked. The crank was polished and the rods were balanced within a thousandth. New bearings were used all around. Pistons are cast ITM pistons (part#15401711, 280ZX .020 (.50mm) Oversize) with new rings and wrists pins. Fel pro gaskets were used. It was painted using por-15 rsut preventaive engine enamel. New freeze plugs were installed. The block was decked flat. Valve cover media blasted and powder coated. MSA cold air intake used. OEM water pump used. New puley belts New alternator New Starter. New dowle pins used for head and block Oil seal rings new (crank) Start up Lube used with ZDDP additive. Oil pan was media blasted and painted black. New plug used. The entire engine has a completley new bolt and hardware set grade 10 used, with the excpetion of a couple of specialty bolts. The spark plugs are from Nissan. the intake was media blasted and powder coated. the fuel rail was custom made. the gas tank was removed, acid dipped, lined and repainted by a radiator shop. A factory nissan fuel pump was ordered. Fuel regulator is adjustable and is from Aeromotive, with gauge on the unit. Braided steel fuel line. Stock harmonic balancer. 240sx tranny, custom driveshaft mace to accomodate the extra 2inch length, and a custom mount for the tranny made. stage 3 clutch, lighter flywheel with Nissan Japan flywheel bolts, new slave cylinder and master scylinder. New brake cyclinder, stock brake booster (2+2 booster is better, so if you switch the car out take the booster cuz its bigger) radiator is tri core with efans that are wired to an automatic temperature sensor. Quote Link to comment
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