howlong

I just bought a 84 with the 12 A and it is running 4000 rpms at 70 mph i was just wondering if that was normal

steve84GS TII

Roughly,yea.

Worn out tires will affect it a little,but 4K is nothing for a rotary.....thats where they start to sing!

MattG

iTrader: (2)

4k thats childs play for a rotary! lol

But yes I run about the same at those speeds.

trochoid

iTrader: (6)

Welcome to the forum and the Darkside. You get the usual sig line with a link to the online FSMs and other rotary related materials. Enjoy.

DriftFB

I belive the diff gearing is a little different between S2 and S3, but I'm at 3,400rpms or 3,500rpms at 70mph

notveryhappyjack

iTrader: (4)

4th at 70 = 4,000
5th at 70 = 3,500
85 Gs 5-speed

Siraniko

iTrader: (13)

I dotn want to disclose what RPM my engines run with 4.44 (FB) and 4.88 (RX-3) on the freway. Its like having a speedlimiter.

MtotheIKEo

Cruising on the freeway has my SA between 3500 and 4k in 5th gear.

trochoid

iTrader: (6)

Diff gears are all the same stock, 3.909, except for the manual SE diff, which is 4.10. Changing tire sizes/diameters makes more of a difference than anything else.

Hyper4mance2k

iTrader: (40)

No you're wrong it's his muffler bearings. You need to change 'em soon! Here's what mine looked like.

MattG

iTrader: (2)

WTF Mate!

trochoid

iTrader: (6)

He likes to toss that pic up every so often, The surgical gloves are a nice touch. Adds a bit of proffesionalism and authenticity to a very old joke.

Nicholas P.

iTrader: (1)

I thought that was my joke. Now I have to find a new one..

t_g_farrell

iTrader: (1)

You in 4th or 5th gear? Either way its close, but 5th should be around 3400 RPM or so.

DriftFB

ah, thats what I was thinking of, I was close, but no cigar.

howlong

it has bigger wheels then stock i cant remember what size though. thanks for the help....i uh liked the muffler bearings thing that was a good chuckle

FirebirdSlayer666

iTrader: (3)

4k for me is about 80-85mph. When I moved here to ID, from about an hour north of Salt Lake City all the way to Boise my tach never dropped below 4k. averaged about 90 LOL. About 3500-3600rpms is when the secondaries open up so if you keep it just under you'll get the best fuel economy

RotaryFTW

i think whoever had my '83 before me put a new transmission it, im exactly at 4k at 80mph