Crank Trigger
Wondering what the pros and cons are of using a crank trigger over a billet distributor? Does one make your car faster than the other, or is one just better for the valve timing, etc.
Thanks! |
Re: Crank Trigger
The crank trigger should give you more stable timing than dist.. I have dynoed w/both I never have seen real power difference,however if you have mechanical advance in dist. and timing is not stable,can see timing marks moving around bouncing,not staying steady when advanced it will hurt power,and can be fixed usaully by locking advance,take dist gear off ,shaft out,under where weights are there is nut that takes 11/32 wrench remove it w/bushing and rotate 180 degrees where there is hole that stud will fit through and reinstall nut and reassemble dist.
One advantage I see w/crank trigger is when using alot of retard,like with nitrous is that you can phase rotor when timing is retarded. There maybe some power in crank trigger,but have seen alot change and not go any faster. Crank trigger or dist. won't have any effect on valve timing,they will only effect ignition timing. Mike Taylor 3601 |
Re: Crank Trigger
Thanks Mike!
|
Re: Crank Trigger
I am no expert on this subject, but I can give you feedback when I changed to one. Mike is right when it comes to the stable nature of the crank trigger. The marks were very stable, which allowed for small adjustments to be made. The other change I made at the same time was installing a Jessel Belt drive. You cannot believe how stable the entire valve train was. Quieted the noise and vibration completely. No numbers to back it up but the engine was making more power. This was a big block Mopar.
Terry |
Re: Crank Trigger
All I can tell you is claims of more stable timing aside, my 950HP engine, turning 8000 in the lights in my nearly 3200 lb. ride that makes 250+ passes a season, prints time slips WITHOUT a crank trigger and no belt drive either.
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
He still can't find the et bracket section. LOL |
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
What about if your motor lives in the 8500+ rpm range would it be better to have one? We both run 289 I run the trigger and he doesn't but both cars are very consistent.
|
Re: Crank Trigger
If you really have a race car where every .001 counts, and the rules allow a crank trigger, you should have one. The simple fact that a crank trigger is more stable, it has to be, should tell you there is something there.
Personally, I believe if someone that has never tried one, but denounces them, have no business saying you don't need one. For all they know, their car could be faster with one installed. But they'll never know... From my own experience, the two best things I can say about going from Stock to Superstock, aside from the extra 100 HP, was the shaft mounted T&D rockers over the OEM stamped steel rockers and the crank-triggered ignition. Both made the car more stable in their job and the result was a smoother running engine. And I probably have a better distributor system than most in Stock in areas that promote more accurate secondary ignition triggering than most out there. In my opinion, there is no way a crank-triggered ignition system CAN NOT be better than a distributor triggered system. You throw a timing chain in there, cam twist and or flex, meshing of two gears, oil pump issues, valve-train issues (spring pressures, harmonics, etc.), etc.,....I'm all ears if you think you can convince me the crank-trigger ignition is "maybe as good but not better" than a distributor triggered ignition. My new ignition is for Stock and I'll be using an ICE Ignition which is a hall-effect system. I don't hear much about that but I believe it is a better system than the monkey see, monkey do MSD system. But I could be wrong. But I will test both systems on the dyno. Then I will know, not guess. |
Re: Crank Trigger
I always ran a billet distributor for years with a curve in the distributor, and I finally went to the crank trigger and programmable ignition before I started this season. Had to have some machine work on my crank mandrel to fit the wheel on the front of the balancer, and also upgraded the ignition boxes. I picked up a lot. Too much in fact. I run the car in super gas and I don't run a throttle control, I change the shift points for the five speed, using a automated programmable shifter. It was too fast for what I was trying to do, and then I retarded the timing to slow it down, and that worked ok, until, the weather changed big time. Still trying to come up with a programmable curve, so I can control things the way I want. Got close this last two weekends, but then started spinning the tires when it got real hot. Crank triggers are a little bit more expensive, but you can do a lot more with them. I will never go back to a distributor controlled ignition, unless it is on the street car that I am trying to get back to.
|
Re: Crank Trigger
Unless the op is racing Pro Stock, Pro Mod, Comp Eliminator or turning 9000 RPM in a super stocker looking for that last .01, a crank trigger is worth NOTHING on the time slip compared to a properly functioning locked out billet distributor.
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
I am surprised he has not commented on Mexjoe's broken crankshaft ordeal.
|
Re: Crank Trigger
Quote:
Over the next 4 months, Tilburg's, Gulius's, Watters's, Patterson's, Bischoff's and other's engine shops phones will be ringing off the wall and their shops full of the engines for and from the biggest and winingest names in class racing just as will Sunset's, Reher Morrison's, Par's, Shafiroff's, Schimdt's and others with their shops full of and building engines for the who's who of super comp, gas, street and bracket racing and you think you're special cause your "build" your own. Too ****** funny! :D The truth is YOU buy your engine parts just like I do and the vast majority of class and bracket racers do, you pay a machine shop to do your machine work just like I do and the vast majority of class and bracket racers do... Quote:
Quote:
Further, last I checked when reading National Dragster, the NHRA doesn't award Wins, Wally's or $$ for those who's claim to fame is they built their engine! Fletcher along with the biggest names in NHRA Sportsman racing don't build their own engines but somehow, he just managed to win his 84th and 85th Wally. ;) Oh and btw, the vast majority of class and serious bracket racers don't build their cars, carbs, transmissions, converters and headers and neither do you!:p What I KNOW is what works on the track, showing on the time slip and what just lightens your wallet! |
Re: Crank Trigger
Two Eds, one brain.
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Talk about what you know, not what you think you know!
The OP's question was clear and it has been answered. |
Re: Crank Trigger
Ed, I've got more experience with ignition systems than you could ever hope to have, I've set up and diagnosed everything from simple points systems to the latest COP based designs. As I've previously stated simply throw a timing lite on a dist. based engine then do the same to a crank trigger engine , if you're not smart enough to operate one I'm sure we could find someone willing to show you. I personally know 3 engineers who design and build state of the art ignition systems for both the OE and aftermarket, none of which would agree with your statements, so I'm assuming they also know nothing? Yes it was answered...incorrectly by you. Your set up is merely a bracket car that any person wih minimal skills can duplicate, we're supposed to be impressed with that...REALLY? Insisting that you are right in the face of all over whelming evidence to the contrary indicates a problem....maybe you should get that looked at.
|
Re: Crank Trigger
Again, talk about what you know, not what you think you know!
|
Re: Crank Trigger
Tell me again how fast exactly is this 3000 lb. 950 hp rocket of yours? As for me here's a short run down ASE master tech since 1985 GM master tech since 1988, multi year world class GM tech. Please feel free to share your many technical accomplishments if you like. What you're bragging of accomplishing is equal to shooting a target with a shot gun versus a pistol....very little skill required to hit it.
|
Re: Crank Trigger
here's all you need to know, I've been racing nearly 25 years and have more passes by thousands than most that post here and I'm an engineer and make at least 4 times the $ you do so I'm not impressed that you're a "master tech".:rolleyes:
My 3144 lb. MPR built super stock car aka "rocket" that I braket race is both quicker and faster than your junk, running deep in the 8's, and has 60 footed 1.17 leaving off the footbrake with an MSD Billet distributor:p |
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
CLUELESS, statements from a nobody that thinks he knows!
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Am I on Yellow Bullet?
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Quote:
For example,the person that dumps the lavoratories on the airplanes where I work is sometimes called a "lavatory service engineer".NOT a pleasant job. |
Re: Crank Trigger
Quote:
|
Re: Crank Trigger
Wow! Thanks!
|
Re: Crank Trigger
I posted a few pages back I see NO WAY a distributor based ignition system could be as efficient as a crank-triggered ignition system. Not with all the tugging - pulling - flexing - twisting that's going on. Still haven't seen a response to that statement. And I'm not an engineer. I'm a salesman. That means I know BS when I see it! :p
|
Re: Crank Trigger
Jeff, don't expect a reply on this as he has no real proof to contradict your statement. As usual he's opened mouth, inserted foot and replying in 1 sentence drible. Perhaps he's feverishly looking for anyone to jump on the short bus with him and come out demanding dist. based igfnition systems be reinstated as the premier ignition...like they were 30 years ago. Remember when you just had to have a dual point dist.? Kinda like that.
|
Re: Crank Trigger
Quote:
I went to college to be an engineer because I thought I would get to drive the train! |
Re: Crank Trigger
Lol!!
|
All times are GMT -4. The time now is 11:58 AM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.