TasoZ24 Posted January 24, 2015 Author Report Share Posted January 24, 2015 I know not to think mike, but I have no tach to know. 1 Quote Link to comment
harlow426@mail.com Posted January 25, 2015 Report Share Posted January 25, 2015 I got an mpg increase with my Weber clone. 4x4s have the gears you want. With my truck it pulls best at 3-4k. Yes...with a properly set up 32-36 I average 2-5mpg better than any hitachi. Rebuild kits/parts available 4 the weber @ most parts stores(in-stock) AND much cheaper. Good luck even finding a kit 4 the HITACHI 4 less than $50...will probably have to 'order' it in 4 u. I miss driving a z powered 720. Both the L20b and Z22 are rated @ 110hp, but the L20b doesn't 'wake' up till 4000rpms. Torque curve so much better with the Z head motors. My 80' will 'GO' if I twist it but If I had the time I'd retrofit a Z....b-4 I'd consider building a LZ2.3. 3 Quote Link to comment
TasoZ24 Posted February 3, 2015 Author Report Share Posted February 3, 2015 Welp carb is acting up... again. so I went ahead and ordered the Weber 38. Doing research and its more what im looking for. rather get a carb that I can build around. 1 Quote Link to comment
Z-train Posted February 3, 2015 Report Share Posted February 3, 2015 Yes...with a properly set up 32-36 I average 2-5mpg better than a worn out hitachi. Fixed it for you. 2 Quote Link to comment
TasoZ24 Posted February 4, 2015 Author Report Share Posted February 4, 2015 The conversion kit will be here by friday. going to town tomorrow, is there anything I need to get to complete the install besides silicon? 1 Quote Link to comment
TasoZ24 Posted February 8, 2015 Author Report Share Posted February 8, 2015 ok got a muffler and 2.25 pipe installed yesterday. new weber 38 going on tomorrow. friend just gave me a turbo kit from an old 240 sx, (later project).going to post pics once I get to a computer. once engines flawless ill get interior done, then worry about curb appeal. 1 Quote Link to comment
datzenmike Posted February 8, 2015 Report Share Posted February 8, 2015 The conversion kit will be here by friday. going to town tomorrow, is there anything I need to get to complete the install besides silicon? Why on earth would you need silicon for a carb swap??? This isn't a chevy engine for cryin' out loud!!! Maybe get some thread locker instead for the mounting studs so they don't come loose. 1 Quote Link to comment
Z-train Posted February 8, 2015 Report Share Posted February 8, 2015 friend just gave me a turbo kit from an old 240 sx, (later project). This is way beyond your skill set.In addition,there is no place on a 720 for a proper inter cooler. Research, research, research 1 Quote Link to comment
wayno Posted February 8, 2015 Report Share Posted February 8, 2015 This is way beyond your skill set.In addition,there is no place on a 720 for a proper inter cooler. Research, research, research I put one in my truck, but it's not the greatest setup, and mine is a diesel. 2 Quote Link to comment
TasoZ24 Posted February 8, 2015 Author Report Share Posted February 8, 2015 thought silicon maybe for gaskets. turbo is a neat gift that is going to sit for a while while I do research. the intercooler was damaged in the wreck, wont say no to free stuff. 1 Quote Link to comment
datzenmike Posted February 8, 2015 Report Share Posted February 8, 2015 Gaskets go on dry. If an early S13 with KA24E then the turbo exhaust manifold could be modified to fit a Z series head. If from DE forget. 1 Quote Link to comment
TasoZ24 Posted February 8, 2015 Author Report Share Posted February 8, 2015 we are supposed to hook up later this week ill get the scoop in person. been taking pictures but no computer, once im able I will post my progress. 2 Quote Link to comment
harlow426@mail.com Posted February 9, 2015 Report Share Posted February 9, 2015 thought silicon maybe for gaskets. turbo is a neat gift that is going to sit for a while while I do research. the intercooler was damaged in the wreck, wont say no to free stuff. What I do....coat one side with clean grease...the other with permatex #2 non-hardening. Can disassemble later w/o a battle. I use silicone in very few applications....wp gaskets, thermostat housing, exmanifold gaskets, ex pipe flanges. Silicone impossible to remove from the pores of metal once cured...leads 2 hard scraping/damage 2 gasket surfaces. Quote Link to comment
datzenmike Posted February 9, 2015 Report Share Posted February 9, 2015 They are assembled without sealants at the factory. Today many metal parts are closer tolerances and goo can be used to seal them, but back 30+ years ago gaskets were used to seal imperfections and sealers weren't needed. Still aren't. You can use them if you want, but it's like wearing two seat belts, you aren't any safer. Quote Link to comment
JoeCool Posted February 9, 2015 Report Share Posted February 9, 2015 I ALWAYS use a little black RTV on thermostat gaskets and water pump gaskets. Hell, I had a hell of a time trying to get a gasket for my truck's thermostat, so it has no paper gasket, just silicone. I have had some paper gaskets leak on me, and as a mechanic who gets paid flat rate commission by the job, taking too much time or redoing a job for free pisses you off! I have NEVER had RTV fail me there. But fuel and silicone is a big no-no! Quote Link to comment
datzenmike Posted February 9, 2015 Report Share Posted February 9, 2015 Paper is to thin. I cut mine from cereal boxes. 2 Quote Link to comment
TasoZ24 Posted February 15, 2015 Author Report Share Posted February 15, 2015 Got the 38 on but having problems tuning. Trucks runs for minute then stalls out. 1 Quote Link to comment
TasoZ24 Posted February 15, 2015 Author Report Share Posted February 15, 2015 Which wire goes on the electronic choke? 1 Quote Link to comment
_chiefjt Posted February 15, 2015 Report Share Posted February 15, 2015 Mine is an '86 and it's a blue wire with red stripes. 1 Quote Link to comment
datzenmike Posted February 15, 2015 Report Share Posted February 15, 2015 Red wire idle cut solenoid. This has to have power to let gas through to the idle circuit. Has 12 volts only when ignition ON. You could just run a jumper from the battery to it, just to see it this fixes the idle problem. Blue wire is power to the electric choke. Has power only when engine running. No power can be alternator not charging. 1 Quote Link to comment
TasoZ24 Posted February 15, 2015 Author Report Share Posted February 15, 2015 The prong is for electronic choke which had blue wire on Hitachi so I used corresponding wire before connector. There is a plug in diesel cutoff so not used at the moment. It ran really good first time was running then went rough and stalled. Had weird base measurement instructions, not much about choke disengagement except warm engine. Could use some tips if any. Reading all I can tonight, hopefully get it going. Damn Valentine's under a hood, wife is PISSED!!! 1 Quote Link to comment
TasoZ24 Posted February 16, 2015 Author Report Share Posted February 16, 2015 welp. new holley fuel pump and regulator. nice clean fuel system with sufficient psi. no luck again today, before getting too frustrated I started tearing down front end to get rid of all the parts stockpiled in the garage. truck should be nice and stable once its finally driving again. 1 Quote Link to comment
_chiefjt Posted February 16, 2015 Report Share Posted February 16, 2015 Does it even run at all or it keeps dying on you? 1 Quote Link to comment
TasoZ24 Posted February 16, 2015 Author Report Share Posted February 16, 2015 it only started once today. having a fuel issue. getting fuel past pressure regulator,but not coming to fuel inlet. the two differnt sized metal lines, bigger is input and smaller is return? confused myself there. I have regulator at 4 psi, 7 max, lowest pressure good pump they had and no carters. in order to set base settings, you disengage choke by holding open butterflies and cycling throttle, screw doesnt touch, then letting butterflies go then cycling again, do I have that right? then im seating speed screw lighty, then going half turn. both mixture screws at one full turn out. was starting better yesterday, took off and cleaned adapter, should I make new gaskets? was only installed couple hours, had to tighten allen bolts, couldnt stop thinking they were loose. 1 Quote Link to comment
wayno Posted February 16, 2015 Report Share Posted February 16, 2015 Big is to carb, small is to tank. 1 Quote Link to comment
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