I missed a upshift(!) from third to fourth last night - hit second and saw what appeared to be @7300 rpms. No obvious resulting problems. Tough little motors. A good reminder that rev limiters won't save you if you drop into a lower gear at the wrong time. I'm still adjusting to my Alta SS - well that is the excuse and after all I'm over 50....Growing up is so hard to do! Thank god (pick one) for fun cars,

Cheers,

 

How do you like the Alta short shifter? Where do you have the adjustment?

Thanks

 

I did that once when I first got the car, went from 3rd to 2nd, RPM went way pass 7300..... Ticking sound came from the motor and went off after 15mins of driving. Thank God!

 

it happens to the best of us, just dont do it again!

 

The shift I miss the most is 5th to 6th. I used to hit 4 one time in 5. Now that I'm all adjusted to having 6 gears I don't do it much at all. Even still, that doesn't really result in over rev just the embarassing, unexpected engine brake.

 

JPIT - I'm very happy with the Alta SS because of the adjustability, I've got mine set at a pretty conservative point - best guess @ a 20% reduction. A very worthwhile mod.

Cheers,

 

when I was learning, I couldnt get to 5th.. kept putting it into 3rd when getting onto the highway. eek! Car is still alive.

 

The hard one for me in the girlfriend's Mini is 6th to 3rd. Actually 3rd or 4th coming from 5th or 6th. Anything in the middle row. It's just getting used to 6-speed.

 

Might as well wind it out a bit on the on ramps, gives you more options when you merge!

 

What if you miss a shift like that from 2nd to 3rd and it revs out, then the idle goes up and down, you shut it off and let it sit for 15 min then start it up and it runs fine, but the engine light is on next to the speedo? Has anyone heard of this before? thanks for any help.

 

Don't we have rev limiters on our MINIs?

 

Rev limiters can't help when you drop into a gear too low, i don't think.

 

if youre running ~6900rpm and shift down instead of up, the rev limiter is useless

considering there are many guys who run 7200-7400rpm i dont think you have a problem ( im running 7800... ok different head, but still )
i would even say everything till 8000rpm should not be a problem if its only for a moment. ( you usually realize really quick what you did wrong an stomp on the clutch again )

if the engine goes, it does so with a big bang

 

I may be wrong but the rev limiter does not prevent the rotational movement of the reciprocating assembly to exceed the limits. It is my understanding that the rev limiters stops the ignition firing so as not allow the engine to over rev during acceleration. So if you miss a shift your engine could still rotate past the rev limits but you could not accelerate past them. Right?

I think that when you compare the difference between someone that misses a shift and no load verses someone under power and going to 7200-7400 or more is a big difference. I have read an engine free rotating no load is more likely to be harmed than one under load under these condition we are talking about.

 

right

where did you here that ?
if you rev till 7400 and then shift, the engine is rotating free also...

 

Internet explanation sometimes gets lost. Ok When you shift depressing the clutch for a brief period shifting from 0.05 seconds (formula cars) to average person say two seconds. (Real handicap shifter), the engine during that short time is un-loaded for that short time. Unless you miss a shift the engine speed can’t climb the rpm scale very quickly loaded. So a loaded engine speed is somewhat buffered and the rpm’s controlled.So you are more likely to do damage revving an un-loaded engine under these circumstances. Yes?