Torque Converter Percent?

[Bill Kondolay]

Chris,



Remember also these factors come into play when doing your testing.



Vehicle weight, tire size, gear ratio.



Under steady light throttle you will find that hp makes very little difference. You will find rpms that the lockup clutch goes in at plays a bigger factor.



The method we used was a software developed by MR ET computers .



Once my racecar is finished that software i will be traveling with it to the races and you guys that want to can try it as it applies to your personal vehicles. However you guys would have to drive your trucks down the 1/4 mile. I know i would have to twist your arm to do so Chris(lol) as you dont like to push your truck beyond its factory limit.

 

[pwr2tow]

I sat here and typed for two hours responding to everyone that has slanted me or my credit and then erased it all because all this is doing is becomeing a ******* match again what it comes down to is this::

open ended remarks, That is what most of this is about, and most of the remarks from just about everyone trying to shut me up has been, open ended remarks, not facts.



When someone accusses me of being a liar or giveing false information should I just sit still and let everyone think that. I ask each and every one of you, would you sit still and say nothing.



I can let most sarcasium go by such as that from Bob and a few others, but don't shut me up by discrediting my character, shut me up with facts.



Bill,

Yes I am just a general consumer.

When you threw your hat in the arena and then started accuseing other companies of not knowing what they are doing ( in your questions of how can this and that work and we have already tryed it and it didn't), I guess I just started reading between the lines, which when pushed came to shove and that is what lead me to the questions.



I guess I'am really trying to find out if some of that negative publicity that BD got (and boosted your company) was really some of your fault. That is why I feel you are tip toeing around my questions.



Ron

 

[Bob Wagner]

Ron, Is your screen showing this text?

Originally posted by Bill Kondolay

Ron,



Now i dont know who told you that lie, but DONT EVER USE MY NAME LIKE THAT AGAIN. I had absolutely nothing to do with the design of that or any converter of BD's. While i did try get them to make changes they would never do so because of the cost factor involved.



Again i dont know where you got that information and I really dont care. DO N0T USE MY NAME in conjunction with that or any company .



The reason I quit that company in the first place was because of the converters and torqueloc. The day they put a Suncoast TC in Pier's truck and sent it to a show flying their own colors that was the day i handed in my notice.



You dont believe me , ask Piers.

1-604-853-9396.



Ron i suggest you get your facts straight before you shoot your mouth off.

 

[Strick-9]

Bill,



That's why I proposed the test for everyone to do at 2500 rpm under NO acceleration. It should take most of the weight factor out of the equation.



Well, I did the test on the way to work this morning. 3rd gear, 2500 rpm. I had the TC locked and unlocked it. My 89% showed a glitch of about one needle width on the tach. Anyone else done the test with a 91% or 93% or a BD 7X or Suncoast or anything else.



-Chris

 

[Lsfarm]

Seeing the difference

The way I looked for the difference between locked and fluid drive is to get up to speed, stabilized, level ground, and locked up. Note the RPM and speed, then double-push the O/D button, this unlocks the TC without downshifting to Direct, very little change in speed, or changing the load on the engine. This is how I get the 100 rpm increase [difference].



When I try to watch for the rpm drop, as the TC locks it seems to be less, maybe only 50-75 rpm. I can't seem to hold the speed as steady this way. Maybe I should try it with the cruise on.



I know that there is a big difference with load, rpm, gear ratio, tire size, climbing a hill, head wind etc. But when trying to find a way to explain the difference between the different TC's this was the best I could think up that everyone could repeat.



The difference between a factory TC and a DTT 89% is hard to explain, it almost has to be experienced. This is especially true with a 'bombed' engine, or a heavy load.



The next time I'm out, I will try it at 2500 rpm in direct to see what I find.



I hope the guy who asked the original questions got them answered.



Greg L

 

[D. Showan]

On my stock TC and engine I can notice the difference more dramatically by watching when it goes into fourth gear lockup (light throttle 600-700rpm drop) (full throttle 500-700 rpm drop-depends on starting rpm) hows that for efficiency!!



Doing it the way Strict-9 said ( 2500rpm lock vs. unlock cruising) I only notice a 100-200rpm difference when it goes into lockup. Sounds like my TC is pretty efficient at 2500 right?????? Not.



My stock engine requires almost full throttle just to get it to 2500rpm, it just doesn't want to rev over that. When it goes into lockup at 2500rpm it really doesn't drop rpm much at all. Is the higher line pressure helping the effieciency of the converter?? Maybe it's the lack of HP at that rpm? Its really strange with this thing (as you approach 2500 it acts like a restricted exhaust on a gas engine) My understanding is that it's defueling?



Unless there is something wrong with my truck Strict-9's test doesn't mean much on a stock engine.



But then no one has a stock truck on this board but me so probably no one really cares. After my transmission upgrades I will be getting a fuel plate anyway.



I hate the way this converter works.



Dave

 

[StakeMan]

Doesn't HP play a big role in the percentage?

 

[Lsfarm]

I Tried 2500 RPM

Well, I went out for dinner, and on the way back did the lockup - unlocked check at 2500 rpm in third [direct]. My truck is the same as Chris's, [Strick-9] just about a needle width- [maybe 25-50 rpm] difference.



D. Showan, I think your 12v engine is set up to start defueling at about 2600 or so, my '96 wouldn't rev beyond 2650 indicated. So if your tach is a bit off, you may be defueling at 2500 rpm.



Greg L

 

[StakeMan]

I don't think anyone has answered GLASMITHS question yet.

 

[GLASMITHS]

THANK YOU MR STAKEMAN



About all that has been going on is:-{} :-{}



I know next to nothing (compared to Bill K) about transmissions; however, what are these other folks qualifications?



Bill K. told me through my wife (I"m deaf) that I needed a livestock converter My Doc said to stay away from beef and pork It could also be labled "An Old Blue Hair Converter", probably. Maybe my wife won't scream the next time I punch it; like when I first put the EZ in



It wouldn't have to be very tight to match this "old BD". I never paid much attention before, but it revs to 2200 under light throttle taking off, but it is still better than the stock was

 

[Strick-9]

So far we have two DTT 89% convertors in two totally different trucks getting the same RPM drop. Sounds like the test is fairly effective.



DTT 89% gives one needle width drop on the tach.

stock gives 100 rpm drop.



The original question was someone wanted a converter SLIGHTLY tighter than what he has. The question now is what does GLASMITHS converter get.

 

[Un-Hemi]

Watching for some rpm drop on a lightly loaded torque converter is basically meaningless. There are too many variables at play here, and we are likely to end up on a dead-end road to confusion.



Back in my glory days as a hobby drag racer, it was generally accepted that stall speed normally varied with torque. What this has to do with percent, I have no idea.



Notice that none (that's NONE) of the expert transmission outfits has addressed this question on the TDR site... . at least to my satisfaction. It can't be that difficult. Makes me say HMMMMMMMM!

 

[Stefan Kondolay]

GLASMITHS,



I think that we have a mix-up here, the TC that he suggested was the 89%. It is the nicest as far as spool up goes and is the one that would give you the best holeshot off the line. The converter is very tight, no comparison to what you have. Strick-9 runs the 89% and he is a very high HP truck. I am going to also look at putting a 89 in my truck. We actually don't offer a livestock TC just a livestock Valve Body.



The Livestock Valve Body still runs very high pressure it just has smoother engagement (doesn't jump in gear as aggressive). It's much nicer for most consumers regardless of age.



Hope this clears up any confusion, the 89 is nothing like what you have, if you look at the signatures of our customers you will find that alot have the 89.

 

[StakeMan]

I believe his question was, what is the % of the TC he has now.

Originally posted by GLASMITHS

I need some help - I had a BD t/c put in when my truck was fairly new, Feb 99. What I need is the percent of lock-up in relation to the t//c available now. I am about to replace it as well as everything else and would like to get something "a little tighter. "

Not much , mind you, but a little





Thanks for any inf



George

 

[carson6]

dunrite converter

When I had my Dunwrong converter It felt like 40% compared to a real converter 89%:--)

 

[GLASMITHS]

Somebody needs to take some MIDOL. I relize that it(the livestock spec v/b) is good for all ages.



So based on that, I won't be getting a 93% for sure. And when we get all our schedules together I'm making a trip to Phoenix, and on the way will stop in Kerrvill, TX and have my transmission DTTized.



Stefan: With my set (after) will it rev up to 2200 under light throttle?



Thanks





George





EDIT: Nobodys got any gauges Need a boost and egt

 

[Stefan Kondolay]

GLASMITHS,



It will go to 2200 but you will have the speed to match.

I went for a ride in a truck with a stock TC today and I now no why everyone does want that, he hammered the throttle and the RPM's went up but no speed. But to answer your question it will not flash up to 2200 then take off. It'll hunker down and take off. :--)



I think my dad will chime it to answer the question later this evening.

 

[Bill Kondolay]

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[GLASMITHS]

Thank You Stefan.



Since you just drove one you understand what I mean. However, we have to remember that it also pull 26K down the road and up 7% grades just fine. I am noticing that it is getting weaker though. I want to replace it on my schedule; and if it breaks out in the boondocks, I might have to have it pulled to a 5star thief



Thanks



Geo

 

[StakeMan]

Can you explain whats in the pictures Bill?