 |
 |
 |
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
Go | New | Find | Notify | Tools | Reply | |
| how much converter slip? | Login/Join |
| DRR Trophy |
Bracket car w SBC and glide. 3400 lbs w 9" slick. 6.50s in 8th. How muck converter slip should I see at the stripe? Thanks Ken KEGRACING - DOING IT THE POOR BOY WAY! PONTIAC with a BowTie... for now! 2017 TX Motorplex No E Track Champion | ||
|
| DRR S/Pro |
My .02$ is dont spend alot of time chasing slip numbers.... it doesnt mean much in my opinion J.R. Baxter ""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen." 2024 Miller Rolla Competition Engines ProCharger Hoosier Tires Abruzzi | |||
|
| DRR Pro |
Ken, don't touch it! Well, maybe change the oil and a wash job  Larry Woodfin | |||
|
DRR Top Comp |
Ken, I agree with JR here do not worry about it too much. If I remember right mine is higher than I like around 18% in 1/8 and 12% in 1/4 mile. If I tightened it up would probably hurt my 60 foot and ET. I feel it is always best to have one on the loose side than too tight. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
|
| DRR Pro |
wow I don't agree at all. converter slip is an excellent way to see if the 1000 to 2000.00 you spent on a converter has been properly matched to your combo. 12% may be livable but in my opinion and almost all the converter companies would agree your leaving a lot of performance off the table. I would say 5 to 7percent is really good and my converter company is shooting for 0.00 slip at the stripe. at the very worst its a good number to watch if your et or 60 is going away and you have a drastic change in slip,you know its converter related instead of chasing your tail on other issues. | |||
|
DRR Pro |
Using the Wallace formula my kids Firebird with a new FTI converter is 17.5% in the 1/8 and 8% in the 1/4 mile. Car was built to run 1/4 mile but we've been running a bunch of 1/8 mile stuff. Car goes 9.70's / 6.20's with 4.30 gears/30" tire I'm surprised at the difference ....... | |||
|
DRR Pro |
i like 4 to 5 in 1/4.that will be much higher in 1/8.i dont have numbers in front of me honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
|
| DRR Trophy |
Thanks all. I am getting about 10-11% right now, using Wallace calculator. Not really planning to change anything right now, just thinking about racing... Had HS graduation this weekend for oldest son, lot of family and friends in town, and no racing... Proud of my boy! Miss the track... LOL Ken KEGRACING - DOING IT THE POOR BOY WAY! PONTIAC with a BowTie... for now! 2017 TX Motorplex No E Track Champion | |||
|
| DRR S/Pro |
I’ve moved my slip in the 1/4 from 5 to 2% then had my drive shaft pass the engine and not seen any difference in et or mph...just my experience My coan will slip less then my abruzzi converter but the abruzzi has a good bit more speed, et about the same J.R. Baxter ""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen." 2024 Miller Rolla Competition Engines ProCharger Hoosier Tires Abruzzi | |||
|
| DRR Top Comp |
Sure but a 2000 Hp blower motor needs a much tighter converter than a lower Hp small block. Tighter converter = less slip. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
|
| DRR Pro |
it takes a tighter convertor to achieve the desired slip percent,the slip numbers are not much different in the 1/4 but the convertors are drastic different.the 2000 hp motor can stand less slip and not pull the motor down as much,but my experience tells me both need to be slipping a little honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
|
DRR Pro |
Can a converter be made tight enough to keep slippage below 5% or so in the 1/8th yet actually have enough stall at the hit AND keep the fall back rpm up where the engine needs it? Seems like 1/8 slippage is always very high. As long as my trap rpm is where I want it, I don't really care about the slip %, just want the initial hit to be high enough and the fall back keep the engine in it's range, will print tickets that way. | |||
|
| DRR Pro |
i dont think so mike,i think 5 is obtainable but i dont think it is desirable wirh current technology in convertors. honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
|
| DRR Pro |
Ken my car #2820 w / 32x14 tire. Last time out making eight runs, first four runs 6.41 and last four runs 6.42. I have 23% convertor slippage at the 1/8 mile. I don't see a problem. | |||
|
| DRR Trophy |
My dragster showed just over 18% on the Wallace calculator for 1/8 mile. | |||
|
| DRR Pro |
mine in 1/8 bracket mode 598 na motor was 11 percent with 9 inch slack convertor. mine in ennis a 6 weeks ago was 18 and 5 at 1/4. the second one is a prochared 540. honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
|
| DRR Sportsman |
I have slower car with a lockup converter. If i lock it up, it lowers my trap RPMs and that's about it. ET and speed are about the same. | |||
|
| DRR Sportsman |
Unless the car is maxed out in the 1/8 mile, ie at max RPM for the combo then 1/8 mile slip numbers don't mean a lot. That's why everyone is showing much lower 1/4 mile numbers than 1/8 mile numbers. You will not reach maximum efficiency until maximum RPM is reached. "I am not ashamed to confess I am ignorant of what I do not know." Marcus Tullius Cicero | |||
|
| DRR S/Pro |
| |||
|
| Powered by Social Strata |
 | Please Wait. Your request is being processed... |
|
 |
 |
 |
 |
