M30 gearing questions

[E30SPDFRK]

Ugh, that sucks. How did you manage to seize a cam?



Look at the bright side though, now's the time to throw in a B35!

[RickSloan]

Ugh, that sucks. How did you manage to seize a cam?



Look at the bright side though, now's the time to throw in a B35!

i would love to know how the cam seized, thing is it happened within 30 seconds and seized so hard it stalled the motor and shattered the plastic guide rail cause the chain tighten so fast. really sucks cause now the crank bolt won't come off, the head i payed a bunch of money for has a stuck b35 cam in it...

i dont have enough money to go b35 is the shitty part, i can't afford mounts at all... i need this car to run. i gotta drive it!

[RickSloan]

so to update, the car runs and the 3.73 is well... fucking sweet

highway sucks and im guzzling gas currently but pulling in 5th from 50 to 110 is fucking sweet.

i went from 80 in 2nd to 60 tho... but its worth it to spin thru 3rd ;)

[E30SPDFRK]

Haha awesome. I can barely spin in second right now with the 2.93 :(

What RPM are you at at 80 in 5th?

[Jean]

60 in 2nd is fine... I plan on using s3.73 with mine as well.. Where does your 3rd top out?

[RickSloan]

60 in 2nd is fine... I plan on using s3.73 with mine as well.. Where does your 3rd top out?

i dont have a tack yet... but 5th is loud so the RPMs are higher then i like

and as far as the top of third i believe around 100 havent really checked was 115 with the 2.93

[ghonarea318i]

i've got a s373 in mine and i don't like it much. it's not for eurpean driving. like rick said highway sucks and it guzzles gas. the max speed it will allow with a non-sport 5 speed is between 135mph and 145mph. (usually closer to 130) and at 120mph rpms are around 5k
great low end and can rip tires through 3rd sometimes 4th but in the long run i'd rather have gas. got a line on a dogleg and a diff re-geared by alpina hopefully i'll have it soon (racewars at end of july.) anyway i also have a s391 from an ix anyone have that set up? curious how it is on the highway

[Jean]

I would imagine if you don't like 3.73 you wouldn't like 3.91 ;)

[ghonarea318i]

yeah but that's for once i'm back in the states. to help keep me from speeding too much.

[E30SPDFRK]

Ok, I give in. I'm throwing my 3.64 in next chance I get. Screw highway comfort.

I may be deaf by the end of the week though :)

[E30SPDFRK]

So it turns out the diff I had was a 3.25 after all. Put it in today and drove around for a mile or so. First gear has no chance of traction now, second feels a bit faster.

When you guys say spin, do you mean drop the clutch while shifting and have a long chirp or drive along in gear hit on it and spin?

[RickSloan]

in first i can just stomp it at a roll and spin them, other wise if im spinning first, and slam second and third ill keep spinning

also let me know what you think of the 3.25 cause as my luck goes my rear is clunking hard and i will be swapping out for my e28 3.25 in a few weeks

[LowR3V'in]

What ratios did m30 come with factory?

[E30SPDFRK]

3.25, 3.46 and 3.64 I believe.

[LowR3V'in]

I see.
Was the 3.25 for 5psds only?
Other two where for autos?