lcord

Thanks. I appreciate the information. This is good to know. I’ll talk to my mechanic as we work through these issues. Thanks again for your feedback.

I did the light flywheel on my 1995 300zxTT and I still don’t like how the clutch engages. I may consider doing that on the 240z Thanks

Thanks. Will do

Oops. Forgot to ask you. How do you know? I guess I’ll just leave my current differential as is, and just focus on the carb. Do you agree?

Good information. Thanks

Thanks for the info. Much appreciated.

I’ll ask the mechanic to confirm if my 4 speed has the stock differential at the 3.364 ratio. If it’s at that ratio, I’ll consider go to the 3.70. Thanks again

You’re right. I’ll get the original parts working first before I do anything else. When I bought the car back in 2008, it was PierreZ that worked on it and got it running. Ever since then, I haven’t had the carbs or the distributor looked at. He probably just did a general tune up and left some power on the table. Haha Should I go ahead and go with the Pertronix if it’s easier to work on even though it won’t help with the performance?

It’s a 4 speed. I haven’t given it a tune up or had the distributor checked out yet. I will have to bring the car to a mechanic to do it for me. I was thinking about contacting Godzilla raceworks in Forth Worth a call and have them work on the car. Once they work on the carb and distributor and get that corrected would you think that doing any of the other upgrades mentioned above would be beneficial?

I have a 1972 Datsun 240Z with the completely stock L24 2.4-liter engine and original Hitachi round-top SU carburetors. I want to improve acceleration, especially from a stop, and make the throttle response more immediate and predictable. It’s always felt weak during acceleration. It seems I have to use the choke to accelerate even when the car is warmed up. I’m not looking to build a race car or pursue maximum horsepower. I want a responsive, enjoyable street car that remains reliable and retains its original appearance as much as possible. Some of the upgrades on my list would be carb rebuild & tune and changing needles, Pertronix ignition conversion, MSA 3-2-1 headers, change to an R180 differential with a 3.70 gear ratio. If you were starting with a completely stock 1972 240Z today, what would you do and what would you avoid? Thanks in advance for sharing your experience and advise. Larry

Thanks for the information. Appreciate it.

Thanks. I’ll check with the rebuilder.

I got it from this website https://www.carpartsmanual.com/

# part# model from to qty 1 ASSY-MASTER VAC 6INC 47210-E4600 7105 1 47210-E4601 7106 7108 1 47210-E8700 7109 7206 1 ASSY-MASTER VAC 7 1/ 47210-N3001 1 47210-N4300 7508 1

Thanks so much for everyone’s information. I’ll send it off to Power Brake Exchange. I was looking on the carpartsmanual.com website on the master vac for the 240z and it showed that the early 1972 240z had a 6 inch size master vac.