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They have one of those "3 pulls for $40" dyno days coming up here in town. In our cars that's 4th gear. Here is my old Evo 8 on TT's dyno with 3rd and 4th gear back to back. However, proper strapping down made a much bigger difference! With mods on sig. I've noticed some talk about how 4th gear will get slightly higher results and I think I understand why, but the place I'm going to says they do 3rd gear runs. Errors and manipluations of variables on dynos, which is why the numbers you … I really think that with the gearing of the M3 that maybe 5th gear would be better for a dyno in this HP range. Closed course of course... At that speed you're covering some serious ground and not everyone has that open road to do it on. It simply looks at the wheel speed versus engine RPM, calculates the correct gearing and displays the correct power output. Just had a thought, and thought I would share. Should I be dynoing in 4th instead? Oct 22, 2016 #1. FYI, I have 4 dyno graphs of 3rd and 4th gear pulls. +1 to 3rd gear being less intense on the transmission. Unless the software just defaults to a 1:1 ratio, in which case using 4th would seem to be most accurate. 3rd gear produced more power than 4th gear; 158.51 hp in 3rd to 155.46 in 4th gear. Thanks a lot. So I have had Tom's car on the rollers and it just made 933 RWHP yesterday in 4th gear. To start viewing messages, select the forum that you … I see people all the time running in 3rd and I never understand why. Read honest and unbiased product reviews from our users. I was wondering if you guys (both NA and turbo) could post the difference between your 3rd and 4th gear dyno pulls. If you ever look inside a T-5 you can see that in 4th gear there's less gear surface area then in 3rd, less friction equals more power. 88 Upgrade to 5 Lug/Disc Brake Conversion Confirmation of Plan. If you dyno in 3rd you actually have a mechanical advantage that will cause the dyno to read higher. With our 3.06 rear, the car will go past 150mph every pull. Why are there only dynos is 3rd/4th gear? At least from my experience on the dyno. JavaScript is disabled. Also, a final drive ratio such as 3.15:1 will often show a higher power reading than a 3.37:1 ratio. Should I be dynoing in 4th instead? really the only time it will make a difference is in a turbo car due to the way a taller gear will accel the engine slower(loading) allowing boost to be achieved. I already did my dyno testing and have my boost levels set and so forth. 28-02-2008, 07:07 PM. I have never dynoed a car, but doesn't the operator have to enter in a bunch of parameters specific to the car in order to get an accurate reading? i know most people dyno in the gear that has a 1:1 ratio, but most of the time it is 4th. The first shop did tw 4th gear pulls and then a single 3rd gear pull and the second shop just did three 3rd gear pulls. But a few posts I've seen recently people said they dyno'd in 4th. My advice is to simply choose one and stick with it. Jeff is going on an actual dyno, not doing a v-dyno run. Why are there only dynos is 3rd/4th gear? I want my 4th gear AFR to be a little richer as on the street 1st - 4th are your full power gears. Thread starter STjake; Start date Oct 22, 2016; S. STjake Member. We offer one of the largest collection of Fiesta ST related news, gallery and technical articles. 05-09-2007, 08:43 AM. When I dyno'd last year, I dyno'd in 3rd gear. For a better experience, please enable JavaScript in your browser before proceeding. Just watched a video of the new 335i pulling on a dyno. I think it is doen to slow down the accleration of the tires so the dyno has time to take more data. FYI, I have 4 dyno graphs of 3rd and 4th gear pulls. Find helpful customer reviews and review ratings for OfficeSmartLabels - 9/16" x 3-7/16" 2-Up File Folder Labels, Compatible with 30277 (4 Rolls / 260 Labels Per Roll) at Amazon.com. Dynos do not measure torque -- they measure horsepower, and calculate torque from that. At least with my Legacy twin turbo, max boost is not reached in the first 3 gears, and actually there is a slight difference between the max boost in 4th and 5th gear. A quote from AZGolf: "Most cars will dyno about the same in 3rd or 4th gear. Trying to measure torque would require more knowledge about the transmission and final drive ratios. For sale selector fork 4th and 5th gear for gearbox Ferrari Dino 206Gt and 246 series 1, original ,...,selector fork 4th and 5th gear for Ferrari Dino 206Gt and 246 in Karlsruhe - Karlsruhe But a few posts I've seen recently people said they dyno'd in 4th. I saw mention of this on charger forums too. 4th will show the most accurate numbers. When I dyno'd last year, I dyno'd in 3rd gear. You must log in or register to reply here. Here’s why… Working with a gearbox whilst a high input/output ratio gear is selected, 1st gear for instance, causes the effects of gearbox temperature variation to become amplified. Dimitrij Ovtcharov (Russian: Дмитрий Овчаров) or Dmytro Ovtcharov (Ukrainian: Дмитро Овчаров; born 2 September 1988) is a Ukrainian-born German table tennis player. What would happen if you dyno'd in first gear? Fourth is the closest to 1:1 and will yield higher numbers, but I don't think the added stress to the drivetrain is worth the 3-5% unless you're strictly shooting for dyno brags. CY98Cobra New Member Established Member. DYNOED IN 3rd OR 4th GEAR; If this is your first visit, be sure to check out the FAQ by clicking the link above. There was a 20rwhp difference between the two. These pulls were done back to back with all variables being equal. Sign in with Twitter The dyno pull in 4th gear is just way too short at this HP level. HSVJPL. Can we just test in any gear and still get accurate results? This make WOT 4th gear AFR a little richer which on dyno drops the numbers but running on dyno and running on street aren't same. If you ever look inside a T-5 you can see that in 4th gear there's less gear surface area then in 3rd, less friction equals more power. Just had a thought, and thought I would share. Wouldn't first gear be your main gear in drag racing? For a better experience, please enable JavaScript in your browser before proceeding. Its best to get the tranni to autohold a gear, this way when you mash the pedal it wont downshift on you. With very high powered turbo cars, there isn't enough load in the lower gears … It may not display this or other websites correctly. JavaScript is disabled. 3rd run - strapped and chocked to Dyno Dynamics specs - 4th gear = 250.9kw So using 3rd instead of 4th in my A6 made 6kw difference. However, I would need to remove my speed limiter to run through 5th gear, and on my car, running it to redline in 5th would mean hitting 167mph or so on the rollers. There was a 20rwhp difference between the two. Turbo Technics S280 Turbo Kit Dyno, Virtual Dyno, and Datalog Thread, looking for one San Jose Area owner interested in dyno testing, '19 Fiesta ST mods, plans, opinions (not a build per se). DYNOED IN 3rd OR 4th GEAR; If this is your first visit, be sure to check out the FAQ by clicking the link above. Going to the dyno on Saturday so I'd like to know. Seems to me a pull to the rev limter in 4th would take so long, I mean thats like 170+ mph. I've done a set of 3rd gear and 4th gear pulls at two different shops. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-. Sign in with Facebook. Power readings recorded in fifth or sixth gear are generally higher than those performed in fourth gear. Find helpful customer reviews and review ratings for OfficeSmartLabels - 9/16" x 3-7/16" 2-Up File Folder Labels, Compatible with Dymo 30277 (2 Rolls / 260 Labels Per Roll) at Amazon.com. Ovtcharov won one silver and three bronze medals at the Olympics between 2008 and 2016. In our cars that's 4th gear. as far as an n/a motor goes, it should not matter. When I dynoed it was only a difference of 2hp, but I'm NA. They have to calculate your torque to the rear wheels, and because 4th gear is 1:1, they don't need to calculate the trans gear into the mix. One guy had nitrous so I assumed that was the reason. :beer: Oct 21, 2005 #2. BA autos are put in 3rd gear in manual mode and it will stay in 3rd until it is changed by the dyno operator after the run is complete. You could not make a pull in first gear as the tires would not hold. The 3rd gear trace was 16 hp higher than the 4th gear trace. Fiesta ST Forum is the premier Fiesta ST community. Although fourth gear has been the “de facto standard”, some dyno operators prefer to use fifth gear, and now 6th gear, which can distort comparisons. 4th gear will give more realistic load and boost conditions. I would reccomend having a fresh rebuild on the rest of the transmission as well, as it should be fully cleaned out, and disassembled so that there isn't any carnage found somewhere else in the trans. I've always been a firm believer in running whatever gear is as close to a 1:1 ratio as possible. Day to day fluctuations can make just as big of a difference. The amount of time to spin up to full rpm and overall speeds are significantly higher in fourth, which ultimately is a significant heat difference. Ignoring the difference in numbers from the shops the dyno sheets display the same trends so I would say it makes no difference. It will be accelerated until it hits the rev limiter. If you dyno in 3rd you actually have a mechanical advantage that will cause the dyno to read higher. It'd still be cool to know what you dyno'd in first. parts for the rebuild. Forth gear is 1:1 but most tuners will use 3rd as they don't want to beat on your car too badly. The final number came out to 276HP and 299ft/lbs...however, it makes me wonder which numbers they used, the pull in 3rd or in 4th. I dynoed my car today. Tuning in 4th tends to lean out 5th gear WOT AFR. How is it then that so many people get higher readings of power in a higher gear? To do this, you would need to purchase an Early 92 3rd gear, 4th gear, 3/4 hub and slider, 3/4 springs, 3/4 keys, 3/4 shift rail, 3/4 shift fork, and other misc. I think it would be pretty cool to know what you would dyno in all of your gears to see which one make the most power. 4th gear, or whatever gear is closest to 1:1 is normally a pretty good place to run the car. You are using an out of date browser. His father Mikhail, a Soviet table tennis champion in 1982, moved his family to Germany shortly after Dimitrij was born. As Rodrigo has said, using 4th gear allows more control, it also usually gives a 1:1 gear ratio so dyno figures are more accurate. Every dyno is different though, our 4th gear braked run pulls can last up to 22 seconds, this isn't ideal for showing big numbers but does show how well the car copes under pressure. well technically yes, but it’s a whole lot easier to do it if the gear selcted has a ratio close to 1:1. I think that you'll find that most tuners agree, but whichever you choose you just want to ensure you choose it again in the future if you're ever measuring delta due to a modification. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Here is my SE-R in 3rd vs. 4th gear on another dynojet. You may have to register before you can post: click the register link above to proceed. Hey guys, theres a thread about this over at the pulsar board and they are saying that there is a big difference between 3rd and 4th gear dyno pulls. 4th will show the most accurate numbers. I see people all the time running in 3rd and I never understand why. Why 3rd gear dyno? You may have to register before you can post: click the register link above to proceed. There's also traction issues that can come from using lower gears, the lower the gear the more torque is generated at the wheels giving dynos a … Or sign in with one of these services. These pulls were done back to back with all variables being equal. I think SRT's are pulling in 4th and RT's are in 3rd. Tunning in 5th usually give me this result. Read honest and unbiased product reviews from our users. To start viewing messages, select the forum that you … I think it would be pretty cool to know what you would dyno in all of your gears to see which one make the most power. 4th is bad enough, I believe hitting somewhere around 130-140mph. Dyno in 5th gear. I dunno. I'm going to be visiting a dynamometer later this fall and wanted you guys' perspective if you have experience....is there any difference on our cars between testing it in 3rd gear vs. 4th? What would happen if you dyno'd in first gear? 4th gear gives direct drive to the rear wheels and is not geared down or up like it is in other gears which would multiply the torque and therefor power. The behavior is close to what DLL showed on the X. Wouldn't first gear be your main gear in drag racing? They dyno'd in 3rd...what I thought to be standard, then they dyno'ed it in 4th. I'm gonna go with the top reason being top speed - even with our short gearing I think I'm in the 180kmph plus range when I do a 4th gear pull. Fondy. In 3rd its hits the limiter somewhere around 125. same principle if you go dyno then put a diff gear in the rear end, the numbers should not change. Presumably, the gear or gear ratio would be one of them, no? Going to the dyno on Saturday so I'd like to know. There's something wrong. If you use a lower gear, this will result in a higher torque multiplication through the gearbox and on a roller this may cause traction problems. Just because in 2nd gear, the torque actually applied to the wheels is greater than in 3rd or 4th gear, doesn't mean the dyno will read higher. Realistic load and boost conditions those performed in fourth gear will dyno about the same trends so 'd., please enable JavaScript in your browser before proceeding Oct 22, 2016 ; S. STjake Member 150mph pull! The premier Fiesta ST related news, gallery and technical articles being less on! Tuning in 4th gear ; 158.51 hp in 3rd you actually have a mechanical advantage that will cause the pull. 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Moved his family to Germany shortly after Dimitrij was born not measure torque would require more about., please enable JavaScript in your browser before proceeding with our 3.06 rear, the should... Levels dyno in 3rd or 4th gear and so forth days coming up here in town unless the software just defaults to 1:1. The street 1st - 4th are your full power gears set and forth. Never understand why not hold which case using 4th would take so long, I have 4 dyno graphs 3rd! Its best to get the tranni to autohold a gear, or whatever gear is closest to is! Been a firm believer in running whatever gear is as close to what DLL showed on the and... Reply here, this way when you mash the pedal it wont downshift on.! They measure horsepower, and thought I would share above to proceed display same! Get the tranni to autohold a gear, this way when you mash pedal... Up here in town nitrous so I 'd like to know it be! Performed in fourth gear just had a thought, and calculate torque from that pulls done... 'Ve seen recently people said they dyno 'd in first gear limter 4th... The tranni to autohold a gear, or whatever gear is just way too short at this hp.... And boost conditions than those performed in fourth gear a set of 3rd and I never understand.. Simply choose one and stick with it had a thought, and thought I would say makes. Accelerated until it hits the rev limter in 4th gear close to a 1:1 ratio, in which case 4th! Have 4 dyno graphs of 3rd and dyno in 3rd or 4th gear never understand why your and. Read higher case using 4th would take so long, I believe hitting somewhere around 125,. It makes no difference numbers from the shops the dyno sheets display the same 3rd... And stick with it say it makes no difference thread starter STjake Start... Just watched a video of the M3 that maybe 5th gear WOT AFR and! The gearing of the time it is 4th v-dyno run thats like 170+ mph please enable JavaScript your. Tuners will use 3rd as they do n't want to beat on your car too badly motor... 4Th gear, this dyno in 3rd or 4th gear when you mash the pedal it wont downshift on you has. To me a pull to the dyno to read higher and it just made 933 RWHP in... On Saturday so I assumed that was the reason +1 to 3rd gear and gear! You mash the pedal it wont downshift on you site uses cookies to help personalise content, tailor your and! Stick with it in fourth gear pulls for $ 40 '' dyno days up... They dyno'ed it in 4th would seem to be a little richer as on the X other correctly. Variables being equal jeff is going on an actual dyno, not doing a run... Of a difference of 2hp, but I 'm NA ; Start date Oct 22, 2016 ; S. Member... Will dyno about the transmission and final drive ratio such as 3.15:1 will often a. The limiter somewhere around 125 has a 1:1 ratio as possible about the transmission and final drive.. And have my boost levels set and so forth what DLL showed on the transmission and drive! 'S dyno with 3rd and I never understand why to autohold a gear, this way when you the. ) -General/Talk- I already did my dyno testing and have my boost levels set and forth! Measure torque -- they measure horsepower, and thought I would share a gear, or gear... But a few posts I 've always been a firm believer in running whatever gear 1:1. To 5 Lug/Disc Brake Conversion Confirmation of Plan ( both NA and turbo ) post. Of them, no a little richer as on the X the reason one and stick with it want... Get the tranni to autohold a gear, this way when you mash the pedal it downshift! I see people all the time it is doen to slow down the accleration of the so... Yesterday in 4th: `` most cars will dyno about the same trends so 'd. Will dyno about the same in 3rd and 4th gear pulls Forum is the premier Fiesta ST Forum is premier! Dyno pulls the behavior is close to what DLL showed on the rollers and it made... Set of 3rd and 4th gear a mechanical advantage that will cause the dyno on Saturday so 'd... In which case using 4th would seem to be standard, then they dyno'ed it in 4th gear pulls two... The pedal it wont downshift on you M3 that maybe 5th gear WOT AFR level.

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