Originally Posted by Gee oh Dee

Moved to chat.

Those who suggest doing it in an auto are crazy.

With a manual trans, you aren't putting any added stress on the trans, except for the syncros unless your not RPM matching. its the clutch and the rest of the driveline that would feel the stress. If you don't RPM match and you just dump the clutch, your forcing the syncros to do double duty, which will cause them to wear prematurely. Its also forcing the clutch to work extra hard as it has to slip a bit until the RPMs match the wheel speed.

If you don't RPM match to keep the stress off the driveline, then your tires are gonna bark, chewing the rubber early.

And I'm 99% sure that the injector pulse is SHUT OFF while under deceleration in an engine braking situation. Therefore getting VERY SLIGHTLY better gas mileage. But it equates out to be a fraction of a percent.

So you really won't notice the gas mileage at all.

Originally Posted by Kyle 4x4 4life

If you know how to drive a manual you wont shift untill you reach lower rpms...and if your at high rpm's and you need to stop/slow down, you normally tap the brakes a few times to slow down then downshift once lower rpms are reached, then downshift accordingly from there...if you downshift and make the tires bark, you DO NOT know how to drive a manual, and should probably stay off the road.lol

Originally Posted by Gee oh Dee

I guess you've never driven a car around a track in a "racing" fashion, have you?

Its called RPM matching. Tapping the brakes in the manner you suggest at speed can upset the balance of a vehicle. Using the gas pedal to bump the motor's RPMs up to match the wheel speed allows downshifting while AT speed without touching the brakes.

A common way to do this is referred to as "heel-toe shifting" where you use both feet to work all three pedals at once.

Similar effects can be achieved on the road in day to day driving by just 'blipping' or lightly tapping the gas just before switching gears and releasing the clutch.

Its something I do quite often. My front brake pads are in poor quality.

Of course a Jeep isn't a race car, so I'm not sure how in depth this needs to go.

Originally Posted by Kyle 4x4 4life

Haha no i have never raced...just been driving manuals since i was tall enough to reach the pedals, and never have i had any clutch or tranny problems driving as i mentioned...but yet i normally dont get over 100mph, being most are pickups.lol

Originally Posted by Gee oh Dee

Get to a safe, clear area. Try RPM matching, you'll notice moving to a lower gear in higher RPM is much easier.

Just don't aim too high with the RPMs, overrevving is bad.

Originally Posted by Gee oh Dee

I guess you've never driven a car around a track in a "racing" fashion, have you?

Its called RPM matching. Tapping the brakes in the manner you suggest at speed can upset the balance of a vehicle. Using the gas pedal to bump the motor's RPMs up to match the wheel speed allows downshifting while AT speed without touching the brakes.

A common way to do this is referred to as "heel-toe shifting" where you use both feet to work all three pedals at once.

Similar effects can be achieved on the road in day to day driving by just 'blipping' or lightly tapping the gas just before switching gears and releasing the clutch.

Its something I do quite often. My front brake pads are in poor quality.

Of course a Jeep isn't a race car, so I'm not sure how in depth this needs to go.

Originally Posted by Gee oh Dee

Get to a safe, clear area. Try RPM matching, you'll notice moving to a lower gear in higher RPM is much easier.

Just don't aim too high with the RPMs, overrevving is bad.

Originally Posted by Kyle 4x4 4life

O i bet it is easier...im guessing it works a lot like driving a semi?

Originally Posted by hal93

When u dive semis u can also use te exhaust breakig. That is a great way to slow down as well as rev matching.

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Originally Posted by Kyle 4x4 4life

The semi i drive every now and then doesn't have a jake brake....but it would sure be nice with a load on.lol

Originally Posted by hal93

Yeah. I bet. Do u just have the air break on the trailer and then the regular brakes? And what type o tranny. Is a a 10 speed,14, or like an 18 speed?

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Originally Posted by Kyle 4x4 4life

Air brakes and its a 10 speed.

Originally Posted by hal93

Sweet. Sound like an old Mack truck with a detroit diesel or an older peterbuilt with a cat or something. Lol
My unc drives rigs so I kinda know a thing or 2 about them. Hehe

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Originally Posted by Kyle 4x4 4life

Old freightliner...and ya my dad, grandpa, and uncle have drove truck ever since i've been alive...and then some.lol...and i started driving truck on the farm when i was 14.lol

Originally Posted by hal93

Good stuff man. I think that everyone should learn to drive a standard trans before they drive an auto. That way if they are ever in the situation where they need to use an older vehicle with a manual they can.

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