240260280

You lye you lyer!

The L series I6 engines were first used in the Cedrics long before the 240z. These were basically taxi cars... not racing chassis like the S20 was designed for. It is simple: torque, displacement, reliability are what made the L24 an eventual winner once Nissan resolved the crank harmonics. The crank problem was first displayed in public by BRE and Sharp engine failures during racing. We only have a limited view of what was going on behind the scenes in Nissan to identify and resolve the problem, but the crank change during production in January is one clue that it occurred well before the sharp and BRE failures. This fact seems to support their statements that no one in Nissan alerted them of the early crank racing risk.... otherwise they could have swapped the cranks out in February. All of this is well documented. 1966 Cedric

Hi @kats I just did a quick look and apparently putting some brittle plastics in boiling water for 10 to 30min can revive them: https://rennlist.com/forums/928-forum/950600-restore-brittle-plastic-boil-it.html https://goldwingdocs.com/forum/viewtopic.php?t=12060

From BRE artical in Classic Motorsports magazine: On early L24 crank failures and possibly why the L24 did not race in Japan until this was sorted: Explaining what put Nissan in this situation requires a wider look. Unlike the high-revving Prince Z 432 engine intended for the Japanese-market Fairlady race car, the 240Z’s new American-market, six-cylinder engines had never been designed for or even expected to see competition. Nissan’s management, including Katayama, was completely unaware that American racing rules required the use of engines and components as delivered in their production cars and sold to the public. Unlike most international racing regulations, the SCCA’s didn’t allow special, factory-built racing engines or components. Since Nissan had simply assumed that the Prince engine would be used in America for racing, the new L-series was never tested at high rpm. Without realizing the situation, Nissan had put its reputation–along with Mr. K’s–at serious risk.

Not too vintage but the S30 in its high speed glory

　最先端技術を投入したレーシングエンジンのS20型より、ローテクな大排気量で、乗りやすい実用エンジンのL24型エンジンを搭載したクルマの方がパフォーマンスが高かったというのはちょっと皮肉な話だが、これも日産が2つのタイプのエンジンを持ち、スカイラインGT-RとフェアレディZを同時期に作っていたからこそ分かったこと。 Posted on April 12, 2019 Posted by: "Auto Messe Web Editorial Department" TEXT: Ryuta Fujita PHOTO: Takahiro Masuda Rare cars on display at the Automobile Council In the history of domestic cars, there have been two years when performance and quality suddenly jumped. That is 1969, 1989, 20 years later. Speaking of the protagonists in 1969 when the times changed, there were two Nissan Fairlady Z (S30 type) and the first Skyline GT-R (PGC10 type). The Nissan booth of “AUTOMOBILE COUNCIL 2019” which closed last week will commemorate the 50th anniversary of the birth of both cars. Exhibit Skyline GT-R (reconstructed vehicle) of No. 39 that won the championship. We were able to confirm the origin of the sports car that Nissan is proud of. Car No. 39 won the first win of the Skyline 49 consecutive wins Another Skyline GT-R is a car that was born to win the race against Fairlady Z's “Minna no Sports Car”. The first "Nissan Skyline" (GC10 series), which appeared first after Prince Motors and Nissan merged, is equipped with the Prince racing car R380 DOHC engine and the GR8 detuned version = S20 engine. The name of the GT-R was given as the world's first high-performance sedan for touring car racing equipped with the world's first 4-valve DOHC engine. It is also very interesting that these two units debuted in 1969 from the same manufacturer. This 39th car won the 1969 JAF Grand Prix, the first GT-R team. This is a restoration of the machine that recorded the first win of Hakoska's 49 consecutive wins (52 wins in total). The rival is Toyota 1600GT (corona's high-performance version), and in fact this 1600GT also received a top checker with a 1.19 second difference, but it became a penalty of 1 lap subtraction by judging that the runway was obstructed to the final lap, GT- R went up and won. The GT-R ran in the TS class of the undercard, so the handle was entrusted to the clubman driver, not the works driver. The strength of GT-R is the strongest 2-liter engine with 160 horsepower, the S20 engine itself. In order to suppress twisting of the crankshaft at high revolutions, a side bolt combined system unique to racing engines is adopted. The crankshaft bearing cap is fastened to the cylinder block from the left and right in addition to the bottom. The head bolts were twice as many as the L20 type of the same straight 6 engine. The carbs consist of 3 Solex (40PHH). There were also Solex 44PHH and Weber (45DCOE) as racing options, and it was a high-tech lever engine at that time (engine unit price = 700,000 yen). Moreover, since it was a typical high-speed engine, I hear that it is refreshing below 4000 rpm. Although the Toyota 2000GT was a rival, it also raced the Z432 with the same S20 engine in a Fairlady Z S30 chassis; but the 240Z, with the L24 type 2.4 liter straight 6 SOHC engine had more torque making it best. It is a bit ironic that the performance of the L24 engine, which is a low-tech, large displacement. practical engine, was better than the S20 racing engine, with the latest, and more advanced technology.

Jan 71 240z 1970 Owners Manual

Is it possible there were more than 1 switch supplier? Here is the switch on HLS30-00147

Easy: Remove dash and put the seat forward. Reposition firewall forward. Put engine where seat was.

Ultrasonic works nice too but your purple beats it. Nice info! Thanks!

I'll have to try the furniture polish. I have been using soap since repairing and modifying olds synths in the 90's

Undiluted dish washing soap and a toothbrush will clean embossed areas and also clean knurled plastic knobs nicely. The bathroom sink is a great location for this.... Remember to not use your toothbrush!

Let me know what you are looking for. I just scored this one: (very early manifold with no drillings for heat shield and it is from mould #1)

Glad to help!

Very clever engineering! Just like the rear control arms. Thanks @kats

No, I have several already. I let Jim A. know first but he is set; so I posted here. I'm looking for a NOS 140psi sender for Kats so if any one else is looking for early parts let me know. I hunt often and have a bit of luck. I'm looking for a 10 Bar Oil pressure gauge.

https://www.ebay.com/itm/Datsun-240Z-Series-1-Temperature-Oil-Pressure-Gauge-140-PSI-Kanto-Seiki-OEM/293365062656?hash=item444deb9c00%3Ag%3AVQsAAOSwE19d6AUr&LH_ItemCondition=4

One of my fav threads! Thanks always for the update and have a good weekend!

How to increase resolution:

1971 Euro (w lip) Note the missing front turn lights and ad hoc substitutes on the bumpers. 1973

How about doing tribute 432R's using LHD mules... very unique... and as valid.

Is $250,000 too high? For a regular 432 one could do similar by purchasing an excellent L20 Fairlady Z for well under $100k and put in a OS Giken for ~ $70k

They look great!