okay new one for me so my z will not go faster then 80 ml an hr i don't know what i might have dun so can you all help me by throwing me some of your thoughts?? and what i can do??

think you Jeremy

Need a little more info than that to help you find your problem.

Fuel filter, binding accelerator, speedometer error.....pick one.

Dennis

1972 240Z (It helps to know this.)

fuel starvation

bad mechanical advance on distributor

failing points spring

binding in the SU pistons?

any number of other things

Can you be more specific? Are the cylinders missing? How do the plugs read? How recent is your fuel filter? Do you have adequate fuel pressure?

Perhaps the throttle is not opening all the way?

Not to be snarky, but I have libidinous difficulty keeping mine UNDER 80.....

Yeah, a problem keeping it under 80 in 3rd gear, with two more gears to go. Sorry I couldnt help that.

Seriously tho, when was the last time the Z did over 80? What has changed if anything, since then.

Perhaps the PO installed a governor so you won't make it to 88 and therefore sent back to 1955????

Reading the O.P.'s posts makes my head hurt.......

Isn't ml the abbreviation for milliliter?

Isn't ml the abbreviation for milliliter?

So his car doesn't go very fast, but it sure is efficient!

dose your speedo go over that