Leaderboard

Just thought I would share the progress on my 1970 240Z Engine and Engine Bay upgrade. Engine is a Stage 4 from Datsun Spirit in Virginia. I went old school with triple Mikuni's (love the sound and responsiveness). It's been about 15 months to get to this stage. Lots of internal upgrades on every engine component, cam, crank, head, block, rods, pistons, valves, etc. Went Kameari Headers and Exhaust (Exhaust still on a boat from Japan), T3 coilovers, R200 Diff, 300ZX halfshafts, Disc Brakes Upgrade. TEC-gt200 Engine Management System upgrade for performance and reliability. Can't wait to drive it... DSI does some clean work.

Great Magnesium scare stories guys. Meanwhile, Nissan's Kobe Seiko 'Rally Mag' and '432 mag' wheels were made from Elektron. If you find yourself in a situation where your wheels are on fire, you're probably half past cooked in any case. If the 60-odd litres of fuel in the tank, whatever oil is left in your engine and the fumes from the plastics of the interior haven't already killed you, you can at least luxuriate in the white hot expense of burning magnesium alloys turning your bones to dust...

Yes a new ignition module fixed the problem. Drove the car to a Z meet an hour away and it ran like a clock. Waiting for other parts to complete the tune up though. Thanks again to all. 12/70 2.6 block E88 heads Mallory DCOE40 3/2 Twice pipes Tokico 1, 3/4 in sways, ext oil cooler

A good way to destroy drivability..Even on mine with a 262 cam I got nothing under 2k and the power just starts a 4k, above that it comes alive but not the friendliest for taking off from street lights in a civil way., in other words...its a hooligans car.

Kats, he may have made the adapter for his engine stand. I do not recall. When I get to his shop again I will see if I can photo it. He lives in another town.

You're not at all biased, right???

If you use 45's then consider a 33 or 34mm choke. The transition from the 33mm choke to the larger 45mm throat (vs 40mm throat) is the challenging tuning aspect to address according to Passini (fuel will precipitate). Below is a table I made to help fit side-draft carbs to Datsun I6 Engines of different displacements and 6500rpm redline. The red trace is for racing applications and is taken from the Weber's formula. The blue line is extrapolated for street. 3 real-world data points are plotted to validate the extrapolation. For an L28 street application, a 40DCOE with 32 or 33 mm choke is the ideal. For 50DCOE racing and running at a 6500 redline, one will need a 3.4litre displacement engine. note for racers: Operating at higher RPM's than 6500 pushes the red line up.

This is what I have for the Z Triple 45mm OER’s

Oh Jeffery...I hate to make judgments however I'll go on a limb and make an educated guess that most early z owners (given the age group) are not interested (or have time for) in "too much" social media. instagram shminstergram.. As carbs go...and I know I'll be criticized for my opinion, SU are fine however there is a design flaw, the jet tubes don't like to return home when the choke is released, causing the "operator" to open the hood and push them up manually. triples are good BUT are total overkill, the head will never flow what the carbs can provide, 2nd problem is initial cost and then...tuning cost (you got to buy 6 of everything) for that kind of money...I'll go FI first. A pair of DGVs in a perfectly good alternative. Perhaps they are not the best solution due to manifold design however....they are super reliable, xlnt power and economy, easily and super cheap to rebuild (I get the master kit including the power valve for $15 shipped). win win in my book. I been running them in over 30 years, only once I been stumped by funky idle, turned out there was a grain of sand blocking the air correction jet..

Magnesium & Cars: redefining Burnout.

One of the threads I read last night. The guy was a helicopter crash firefighter on a navy ship. They told him if the magnesium wheels on the chopper catch fire you can't extinguish them because they burn so hot it breaks the water into hydrogen and oxygen. He also said they burn so hot they'll burn through the ship deck in just a few minutes. So the SOP was to push the burning chopper overboard...

The engine case on my air cooled Porsche is magnesium. For your reading pleasure, google "Porsche magnesium engine case fires". They burn really hot and are hard to extinguish. Dennis

I drove a friends 240 for 10 minutes a year ago on a cruise, that is the extent of my experience with the S30 as well!

My experience with Yahoo! Japan sellers is that they rarely answer questions. I have someone who can translate for me, but we rarely get a reply. So I often buy items based on photos and poor Google Translate descriptions. Still I find most items arrive as I expected and I find sellers quite good in general.

You could just plant a cherry tree in the middle of the shop. I've heard they make great anchors for dent removal and straightening. @Patcon

I've fabricated the driver side rail now and tacked it in place. I'm about 1/16 out of square on the engine bay but I think ill roll with it. Everything seems to line up with my center and outside lines I'm using for reference. I'll fabricate the lower rad support then tackle how I will fix the twist on the upper strut tower pieces of structure. The pass side is pretty straight but the driver side goes low kinda like this guys situation but ot quite as bad and the opposite direction. Sent from my SM-N950W using Tapatalk