dawg7

I'm working on getting a dyno run. I'll be surprised if it hits 200 but all I know is I have a lot of fun with the torque. This engine is definitely a budget build BUT it was put together by a professional engine builder!

Retired US Army. Working on FTCKY.

I replaced the stock fuel pump with a nice quiet 5 PSI Carter pump and wired in the inertia cutoff switch. Just block the mechanical and it's ready for a set of Weber DCOEs.

That hood gets a mixed review. No middle ground from the crowd.....they just love it or hate it! Also here are a few shots of the Magnaflow exhaust.

Pros: Car has been in Murrieta, CA from 1993 unitl 2010; Texas until 2016. Been in TN for one year. 3.1 stroker setup with 1000 miles since build. Z Therapy carbs with needle setup for 3.1 stroker engine. Light wire harness relay upgrade. Z Specialists 125 amp alternator. S2000 seats. Innovate O2 wideband. Cold air intake. 79 280zx 5 speed that was overhauled 2014. Fuel pump inertia cutoff switch. USB wired in glove box. Floor pans are solid. Floor from firewall to rear was primed and then Fatmat installed. Toyota 2 piston calipers with 15/16 master cylinder. Just replaced clutch master cylinder. Cons: Front end is loose. Rod ends were replaced in 2011 so I am thinking the rack and pinion needs reworked. The paint job was done in 1993 and showing its age. A few rust bubbles on the top of hatch. No rust inside the rear hatch area. A few dings underneath from idiot at tire shop not hitting the jack point. Speedometer needle doesn't move. Odometer works. The stroker engine setup: N42 block L28 293547 overbore 3mm KA24E PISTONS ITM RY6660 CUT .5mm by machine shop N42 head mildly ported and polished; gasket matched Cosmetic head gasket 1.2mm Isky L480 cam 480 lift 280 duration 71 240z connecting rods MSA 6-1 header 2 ½ “ Magnaflow exhaust Canon Intake 1979 280zx distributor welded to 15 degree max advance (15 idle to 30 @ 3500 rpm). Vacuum plugged. MSD 6AL and MSD tach adapter 3 ohm Petronix flamethrower Taylor 8mm spark plug wires

Bruce from Z Therapy highly suggested the cold air intake setup.

I just installed a set of Z Therapy SU carbs and decided to go with a cold air intake setup. I didn't have any air filters so thought this would be a cool setup. So I bought the air box from Unique Z products (99$) and the Spectre 3 inch chrome covered plastic piping with filter (80$) from O Reilly parts. Very tight fit going thru the 3 inch hole near the radiator. Should have opened that hole up a bit and not scratched one of the pipes. I plan on moving the horn to the other side and rigging up a standoff clamp to go around the pipe.

Yes, I entered the numbers incorrectly. I edited the first post to reflect the correct numberts which are 182 HP and 189 TQ.

Definitely the engine knocked at 32 degrees. The idle was best at 17 degrees and only a mix of 100 octane and 93 (40/60 mix) would allow anything higher. The first weld ended up at 15 degrees and I stuck with that for the dyno run. Might have put another weld on the dizzy and go with a 13 degree travel. But I knew I was selling the Webers. And the head was only gasket matched, nothing fancy. Snappy? I sure enjoyed the torque but I thought the cam would go higher than 5800. Reversed numbers? The dyno shop put the lead on the coil as he couldn't get a reading from the plug wire. Not sure if that affected the readings?

I was using the optic tube and it was just low around 23mm.

I am posting this information for reference only. I already sold the Weber carbs with manifold and will be going either Z therapy SUs or Arizona Z 4 Barrel setup. The reason for selling? Just didn't have the skill or motivation to get educated on tuning the Webers. Still up in the air on getting the Top end racing TWM throttle body system. Kinda pricey at 3k minus the ECM. Once I get one of those installed I will get back on the dyno. I think the carbs, canon manifold and the mild porting limited the HP. Did a few chassis dyno runs last month and here is the best pull. 182HP and 189 TQ at max pull at 5800. I also have an O2 wideband installed. The AFR was 13.4 at an idle, 12.0 around 3500 and 11.1 at 5800. The stroker engine is made up from this setup: N42 block overbore 3mm KA24E PISTONS ITM RY6660 CUT .5mm by machine shop N42 head midly ported and polished; gasket matched Cosmetic head gasket 1.2mm Isky L480 cam 480 lift 280 duration 71 240z connecting rods MSA 6--1 header 2 ½ “ Magnaflow exhaust Canon Intake 1979 280zx distributor welded to 15 degree max advance(15 idle to 30 @ 3500 rpm). Vacuum plugged. MSD 6AL and MSD tach adapter 3 ohm Petronix flamethrower Taylor 8mm spark plug wires Weber DCOE 40-18 settings. CHOKE 34 AIR CORRECTION 180 MAIN JET 140 IDLE JET 50F9 EMULSION F11 AUX VENT 4.5 PUMP JET 1.75 NEEDLE SEAT 1.75 INLET VALVE .55

I feel kinda crappy for not replying back alot sooner. I mean I fixed the carb back in April. That was a great write up by zKars and it worked out great. Also I am trying to sell the carbs and want all to know it was fixed in a very solid manner and looks pretty good. I bought the durafix rods and with a bit of practice had a nice solid piece of metal to work with and made a nice pin support. The JB weld did not hold up well at all. I would recommend the process as explained above by zKars to anyone.

Siteunseen- That is a 71 (is/was) owned by Mark Ralston located in Austin, TX. 1971 Datsun 240 Z- Classic Import & Tuner Car - Super Street All Pages