Engine braking in manual valve body??

[OTHCUSTOMS]

as i said in a diff thread i said that the tci manual valve body has an engine braking mechanism or something in 2nd gear which means when u take your foot off the gas it slows down the engine...does anyone else have this? should i stay clear of this? does this sound like something good to have???

[OTHCUSTOMS]

wow!!! anyone???? anyone???

[adamsoil]

I sent you a pm.

[OTHCUSTOMS]

is there anyone that knows about this???? or is every1 clueless about this

[OTHCUSTOMS]

wow im very surprised that no1 is helping out on this thread...usually more than 1 person has an idea...

[coppergmc]

Never heard of it. Wouldn't mind reading TCI's directions though.

[XTEN]

Like I said before, I never had a mvb with engine braking in any gear.Are you saying its in 2nd only and not in hi gear?Is this in a th350 or a glide?I always thought if it had engine braking in hi gear,that'd be good to help get woah'ed up!If I had my choice Id prefer one with engine braking in hi gear,if everything else was the same(durability,longevity)If it has braking in a watered down version(like a auto/man)dont even bother with it if its race only.

[OTHCUSTOMS]

no fromn what i understand its engine braking in 2nd gear, and im talking about for a th350, but with all this un sure ness im just gonan find 1 without engine braking....

[XTEN]

no fromn what i understand its engine braking in 2nd gear, and im talking about for a th350, but with all this un sure ness im just gonan find 1 without engine braking....If its a 3 spd,I dont understand what good engine braking would be in 2nd.Hi gear,yeah that'd be nice.I dont think pullin it down from hi into 2nd to use engine braking would be a good idea.Probably blow it to pieces,lotta line pressure.jmo

[OTHCUSTOMS]

ya i can imagine, so scrath this engine braking garbage

[manyfire]

I agree with xten on this, i don't see where braking in 2nd would be any good, third yeah I could see that, Maybe off road that would be it.

[XTEN]

ya i can imagine, so scrath this engine braking garbageI wouldnt scratch the idea yet.Maybe call or e-mail someone from tci,art carr,Rossler,Coan,or someone reputable,and ask.Maybe go on their websites and see if they have a tech line.I think engine braking in hi gear would be great if there isnt a down side.

[Bakas]

never heard of engine breaking in a th350, but when you let off the gas at 6800 like me.. or what ever.. the car will slow down anyway. Just my 2 cents

[OTHCUSTOMS]

well i officially found out today what this engine braking in a manual valve body is all about. i looked at tci website and also ati website and both sites have forward shift pattern valve bodies with engine braking. a buddy of mine called a speed shop that does race transmission and asked them what this is about. he said forward shift pattern valve bodies are mainly used in circle track, off road, transmissions so that whne they need to slow down slighly they have no need to press on the brake, the engine will slow down from the transmission when the pedal is released as like a tractor trailer rig does (jake brake). there is no forward shift manual valve body that does not have this engine brake. they eiether have 2nd gear only, 2nd and 3rd only.
so now basically me needing a manual valve body cannot stick to the forward shift pattern as i wanted to for comfortability from doing it for some long. i have to put on my big boy shorts and convert over to a reverse shift pattern manual valve body, which in turn requires me once again( and some of you may know i went thru 4 of them already) to change my shifter.
like i said the only reason i wanted to keep forward shift pattern is cause im so used to it by now. im just scared at the heat of the moment i may forget n shift up instead of down for 2nd or 3rd at full throttle and end up down shifting. not something i really wanan do and learn in a trial and error shot. but oh well right!!!! hahaha

[XTEN]

well i officially found out today what this engine braking in a manual valve body is all about. i looked at tci website and also ati website and both sites have forward shift pattern valve bodies with engine braking. a buddy of mine called a speed shop that does race transmission and asked them what this is about. he said forward shift pattern valve bodies are mainly used in circle track, off road, transmissions so that whne they need to slow down slighly they have no need to press on the brake, the engine will slow down from the transmission when the pedal is released as like a tractor trailer rig does (jake brake). there is no forward shift manual valve body that does not have this engine brake. they eiether have 2nd gear only, 2nd and 3rd only.
so now basically me needing a manual valve body cannot stick to the forward shift pattern as i wanted to for comfortability from doing it for some long. i have to put on my big boy shorts and convert over to a reverse shift pattern manual valve body, which in turn requires me once again( and some of you may know i went thru 4 of them already) to change my shifter.
like i said the only reason i wanted to keep forward shift pattern is cause im so used to it by now. im just scared at the heat of the moment i may forget n shift up instead of down for 2nd or 3rd at full throttle and end up down shifting. not something i really wanan do and learn in a trial and error shot. but oh well right!!!! hahahaWhats wrong with engine braking,anyway?You have it now.Its not like a jake brake,its just the compression of your motor slowing you down when you let your foot off the throttle,just like in a stock th350.The mvb's Ive had went into freewheel when you let off,like putting it in neutral.Nothing wrong with foreward patern w/engine brake imo.

[chris1972]

i don't see a big deal about it going wide open in 1st 2nd and 3rd don't let off untill the end ..

[Bakas]

Ive still never heard of this "engine breaking valve body" deal before. I dont know if it almost works like a hydrostatic transmission in a lawn tractor or what, let off the gas and throws you foward?

Could you buy a different valvebody? Does it have to be a TCI? I dont know what tranny you have, but their are other people out there that make valve bodies.

I have a coan manual valve body with a foward shift pattern, I dont see why you have to change to a reverse?

[XTEN]

Ive still never heard of this "engine breaking valve body" deal before. I dont know if it almost works like a hydrostatic transmission in a lawn tractor or what, let off the gas and throws you foward?

Could you buy a different valvebody? Does it have to be a TCI? I dont know what tranny you have, but their are other people out there that make valve bodies.

I have a coan manual valve body with a foward shift pattern, I dont see why you have to change to a reverse?I dont think its like a hydrostat,Bakas,ya know how you let off w/a mvb it goes into freewheel?I think what he's talking about is like a stock trans,where the engine compression slows you down when you lift,doesnt go into freewheel.

[oncearacer52]

I can think of no purpose it would serve in drag racing. Surely they would not advocate down shifting to second at the end of the run. Maybe in an emergency situation.....

Some shifters will work either way, forward or reverse. My B&M came with different shift pattern stickers.

[XTEN]

I can think of no purpose it would serve in drag racing. Surely they would not advocate down shifting to second at the end of the run. Maybe in an emergency situation.....

Some shifters will work either way, forward or reverse. My B&M came with different shift pattern stickers.I can think of no purpose,either,but it wouldnt hurt,would it?The only dif I can even think of is at the end of the 1/4,when you let off it doesnt go into freewheeling.It'd be more like a stock tranny that the compression from the engine would slow you down when you let off.Especially if youre running some deep gears.Would it actually hurt anything?

[OTHCUSTOMS]

Ive still never heard of this "engine breaking valve body" deal before. I dont know if it almost works like a hydrostatic transmission in a lawn tractor or what, let off the gas and throws you foward?

Could you buy a different valvebody? Does it have to be a TCI? I dont know what tranny you have, but their are other people out there that make valve bodies.

I have a coan manual valve body with a foward shift pattern, I dont see why you have to change to a reverse?

im just saying bakas i looked at tci and ati, hughes even has engine braking in the forward pattern... but if u are saying coan has it without then ill take a look. as for actually getting it with an engine brake idk cause this trans shop seems to think forward shift pattern mvb's arent that great for drag racing do to the bands being in 1st gear...idk what that really means but he says and even ati says fwd patterns are slightly slower than reverse patterns.

[OTHCUSTOMS]

its not that fact that ive been lookin for this engine braking, i really dont know anything about it, all i want is a mvb forward shift pattern and i came to find all these things with engine braking, which in turn is why i asked if this is good or not, i really have no idea. dont ever plan on down shifting. just want a fwd shift mvb. haha

[OTHCUSTOMS]

Ive still never heard of this "engine breaking valve body" deal before. I dont know if it almost works like a hydrostatic transmission in a lawn tractor or what, let off the gas and throws you foward?

Could you buy a different valvebody? Does it have to be a TCI? I dont know what tranny you have, but their are other people out there that make valve bodies.

I have a coan manual valve body with a foward shift pattern, I dont see why you have to change to a reverse?

bakas i just looked on the coan website it says there mvb has engine braking also....do u have a transbrake? cause there are non transbrake mvb's with engine braking

[stroker1]

Nothing wrong with drag racing a forward pattern MVB with engine braking. You just won't be using the engine braking, or at least you shouldn't. That's for helping to control speed going into a corner without having to ride the brake so much for a road course or oval track.

Most transbrake valve bodies for 3 speeds are reverse pattern. My glide w/transbrake is forward pattern (I think, I haven't even been thru the gears yet. Just got it installed).

[rayL]

dude your over thinking this. get in your neighbors mini van or whatever and shift it into 1st or low. Now hold it to the floor till its about to blow and let off the gas. Now when you go flying up on the dash, thats engine braking. 99% of all stock transmissions have it in every gear except high gear. Ill be damned if i buy another shifter and sweat some small junk over some engine braking?? cmon dude.... its nothing more than the over-run clutch being applied instead freewheeling..heh thats it.

[OTHCUSTOMS]

dude your over thinking this. get in your neighbors mini van or whatever and shift it into 1st or low. Now hold it to the floor till its about to blow and let off the gas. Now when you go flying up on the dash, thats engine braking. 99% of all stock transmissions have it in every gear except high gear. Ill be damned if i buy another shifter and sweat some small junk over some engine braking?? cmon dude.... its nothing more than the over-run clutch being applied instead freewheeling..heh thats it.

hahahaahahahahahaha getting a lil testy huh.... yeah man i know what ya mean, im just going along and buying it, i just wasnt sure thats all, but after all this junk research and all it really is nothing... haha

[rayL]

nah i didnt mean to sound testy it just seemed some were making a big deal out of nothing. Like the guy said, its important to some to HAVE it such as the dirt trackers. To us straightliners..its just another detail.

[OH_YO]

Had a buddy put a hole in a piston with one. He sent his tranny off to install a trans brake with a reverse shift pattern. The guy told him it would coast when you let off of it. He makes his first nitrous pass with new tranny and motor, shut it off after the traps and pulls shoot to get a good read on the plugs......he said it felt like he was in 1st gear....Smoke shoots out the left side. He burnt a hole in the number 3 piston and cracked two more. He sent the tranny back to them this morning to check out.....Do you think they forgot to drill something out? What makes it coast when you let off?

[stroker1]

Had a buddy put a hole in a piston with one. He sent his tranny off to install a trans brake with a reverse shift pattern. The guy told him it would coast when you let off of it. He makes his first nitrous pass with new tranny and motor, shut it off after the traps and pulls shoot to get a good read on the plugs......he said it felt like he was in 1st gear....Smoke shoots out the left side. He burnt a hole in the number 3 piston and cracked two more. He sent the tranny back to them this morning to check out.....Do you think they forgot to drill something out? What makes it coast when you let off?

Sure he was in high gear when he shut it down? I've seen folks shut down half track in 2nd gear (3 speed tranny 350/400) and it would stand on it's nose.

[OH_YO]

Sure he was in high gear when he shut it down? I've seen folks shut down half track in 2nd gear (3 speed tranny 350/400) and it would stand on it's nose.

I hope he was in high gear @ 157mph. I forgot to say it was a 1/4 mile pass.

[OTHCUSTOMS]

well i wouldnt be shutting down the motor, so i hope that doesnt happen at all

[OTHCUSTOMS]

plus i dont have a transbrake and also dont use nitrous

[OH_YO]

Sure he was in high gear when he shut it down? I've seen folks shut down half track in 2nd gear (3 speed tranny 350/400) and it would stand on it's nose.

After thinking about he is in a habit of going from 3rd to neutral then shuting it down in neutral. I will ask him if he went from 3rd back to 2nd thinking he was going into neutral like in times past.....I bet thats what he did.

[OH_YO]

well i wouldnt be shutting down the motor, so i hope that doesnt happen at all

You don't never read your plugs?

[rayL]

how would that eat a piston??? If he shut it down....it should of been shut down.

[OH_YO]

how would that eat a piston??? If he shut it down....it should of been shut down.

I said the same thing....The machine shop guy said it leaned it out while hyhydraulicing the motor.

[stroker1]

I said the same thing....The machine shop guy said it leaned it out while hyhydraulicing the motor.

I don't know about the leaning out part. Probably so rich it was actually hydraulicly locking the cylinders. As with too much raw fuel, which could only have happened if he still had his foot in the gas. And shifted back to 2nd gear with the reverse shift pattern, which would have then created engine braking. So it would still been churning the motor with no ignition. So it acts like a pump with no ignition and sucks up all the raw fuel it can hold until something hydraulically locks, or creates a dieseling effect. !!!??? WOW, that's the kind of stuff that only happens to me.

OR, the fuel noid hung open and hydrauliced the engine with raw fuel!!

[rayL]

or the tune was bad and ate a piston well before the shutdown.

[OH_YO]

or the tune was bad and ate a piston well before the shutdown.

No smoke till shutdown and actually it smoked after the chute was pulled. I have a video of it if I can ever get it uploaded.