I think you're describing the blanking plug at the end of the pressure release valve, in which case no.

Quote:
Sounds like he's actually after the original (proper?) Datsun emblem/logo (circle with red top half, blue bottom half, and "Datsun" across middle). I think this design, which you often see, is actually the newer "Nissan" emblem with name changed.

Haven't gone to the site or read but think I have the gist from comments above.

I reckon it would create zero boost given the "supercharger" has the same volume output as the remaining "engine" capacity. (and I can't see any reason the "supercharger" would have superior cylinder filling and therefore output over the "engine".)

Theory might work for a V8 if you used say 3 cyls as the engine and 5 as "supercharger". One of the reasons Superchargers are overdriven say 1.5 times engine speed.

Ignores the frictional losses etc of course.

Agree it has more promise than the "direct Exhaust Injection" though!!

Ratios and Strength is same between 60A and 60L box. Dogleg (in NZ at least) was matched to the B310 A14. Std pattern came with the facelift B310 and A15.

The purpose of the box or hat is to equalise the pressure acting on the carb jets.

Carbs rely on the ventury/suction effect of the air going through the carb to suck fuel through the jets to create the air/fuel mixture your engine runs on.
If you just pressurise the air intake on the carb no fuel will get into the engine - it will just blow air backwards through the jets.

Sealing the whole carb as opposed to just the top ensures air doesn't get blown out around the throttle spindles etc.

You also need to devise to keep the fuel pressure at around 3-4psi above boost pressure.

Keen to see a pic of this head. Sounds good.

Looking at where the reverse idler sits (lump on LHS at front of tail housing where it meets sandwich), and what appears to be the small hole size for the clutch cable, I'd say it's an early 1200 box. (120Y and B310 cases differ in those areas)

CAR: 1980 Sunny B310 (Body std)
MOTOR: A12 (bored to 1286cc. mild cam. A12 GX head)
GEARBOX: 4 speed (std)
DIFF: 3.889 (std/open)
INDUCTION: 2 x Dellorto 40s (32mm chokes)
EXHAUST: Extractors and 2 inch system
WHEELS/TYRES: Bridgestone Eagers 185/60x13 on 6" alloys

60ft time: -
1/4 mile:16.537
MPH:83.56

This was my roadcar back in 1989 and used for club events. Severe wheelspin. An A14 or A15 would have better suited the relatively big and heavy B310 but back then they were hard to come by (in my price range). Fastest I ever managed to get it to go was 6700rpm in 1:1 top (revved freely to 8k through gears) whereas I'm told a 1200 with a good engine will pull 7500rpm (less weight and drag/frontal area I guess and normally on 12"s back then).

Same engine later transplanted into (much lighter) 1200 Coupe racecar which was a second quicker despite option 1 C/R box - which has very tall 1st gear (2.169:1) and best suited to rolling starts. Could not spin wheels (race slicks) - just the clutch!

If it's a 60A or 60L (or 56A) series box driveshaft will be the same as 4 speed (length and shaft/spline). 63A 5 speeds have bigger shaft/spline at both ends (clutch and driveshaft).

Mine has been machined down to 4kg which is lightest I've seen a standard one taken down to. Std 10 ish?