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Author Topic:   abnormal noise from car in corner
bp22m1
Dirt Full Roller

Total posts: 69
posted September 25, 2005 08:28 PM  
last night for our feature the track was icy slick. all drivers were having to really pedal through the corner except one. he would be smooth throught the corner and his car was a making a popping noise in the corner. all other cars were either real sideways or off the gas, except this guy. he would get massive bite outta the turn with a track that had pretty much none. he won by over a straight away on a big half mile. were did he get all his bite??? curious to hear opinions!!!

joeltjen
Dirt Maniac

Total posts: 182
posted September 25, 2005 08:37 PM  
two words: TRACTION CONTROL! probably one of the older ones as they weren't as smooth on cutting out the cylinders as the new ones.

mod95r2
Dirt Roller

Total posts: 12
posted September 25, 2005 08:41 PM  
could he have pull a spark plug wire off to cut hp, could explain the popping noise

nyimcamod8t
Dirt Full Roller

Total posts: 67
posted September 26, 2005 02:32 PM  
could this maybe explain that same cars multiple feature wins at another track that is dry slick all the time? don't feel too bad, we had the same deal at my home track at our last race, a car that runs in the back half of the top ten on most nights ran a straightaway out on me, i could stay with him going in the turn, but from middle out he would just point straight and go, no wheel spin or nothing.people in the stands said he was "skipping" also, go figure. best thing about that was there was no tech that night either.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted September 26, 2005 04:52 PM  
Sounds like possible TC to me too!!!

bp22m1
Dirt Full Roller

Total posts: 69
posted September 26, 2005 05:41 PM  
nyimcamod u know what im talking about i take it. yes like 10 wins at one track that is super slick, and this last saturday i have never seen the track this slick and it was like throwing a blanket over the rest of the field. he would like just kinda casually drive into the corner and then just power outta the turn like there was tack in the track. but i think we are on the same page!!!! may i also add that this car was imponded once this season for doing somthing ur not supposed to after the feature, but nothing was done in the impound, just held the car and after a little while let him get it back. used to make an extra lap after EVERY feature until that happened and then the next week he DIDNT win. go figure. i admott he is a good driver and has a good crew and car but there where about 5 other real fast cars there as well.

[This message has been edited by bp22m1 (edited September 26, 2005).]

[This message has been edited by bp22m1 (edited September 26, 2005).]

rpm20
Dirt Freak

Total posts: 338
posted September 26, 2005 06:23 PM  
we got the same deal at both tracks we run at.......track champ both tracks 2 years in a row. i dont have the cash for tc and its hard to compete against it.

i did see a guy this season put a low , like 5000 chip in his car in the heat and win by half a lap in a heat.....legal tc i would call it, she popped and banged a lot but it worked. lol
at least he didnt cheat.

the guys who know where i am at will likely chime in next.
if it aint dirt...you aint racin. rpm20

mod95r2
Dirt Roller

Total posts: 12
posted September 26, 2005 06:33 PM  
i still think he my be disabling a plug wire. Most tracks allow a cool down lap after A and B features. Traction Control is very expensive and not practical, in fact ridiculus for weekly racing. why does everyone think that if someone starts winning there using TC, the probably found something that works good and soon everyone will catch on and the cycle repeats over and over.

bp22m1
Dirt Full Roller

Total posts: 69
posted September 26, 2005 06:38 PM  
mod 95 i agree but they way the track was and the amount he won buy is ridiculos. this team does nto car how much money to spend as long as they win. i agree it is expensive for weekly racing but they dont care. yeah but if he is disabling a plug wire he wouldnt have starightaway speed right? or is he doing it only in the corner and if he might be how does he do it? i wanna hear all opinions on this. rPM may i add that his car is popping and stuff but his motor sounds like its not turning many RPMS at all it sounds doggy.

[This message has been edited by bp22m1 (edited September 26, 2005).]

mod95r2
Dirt Roller

Total posts: 12
posted September 26, 2005 06:50 PM  
i would say he is just removing a plug wire off the dist. before the feature which isnt illegal. as far as straight away speed it helps there too. straight away speed is effected the most by cornering speed. Plus i would bet that everyone buzzes their tires at some point down the straight away. taking a plug wire off would take away torque the most but still give the rpm he needs just not as quick.

bp22m1
Dirt Full Roller

Total posts: 69
posted September 27, 2005 04:51 AM  
Wouldnt u hear a difference in the way his car sounded while lined up for the feature?
i think thats whats hes doing bc when he enters the corner it sounds like his car is barly running but when he gets on it outta the corner he just takes off. i see how taking a plug wire off will help. and u cant really protest against that i guess bc ur not cheating. but isnt there somethingh about altering timing with plug wires in the IMCA rule book?

mod95r2
Dirt Roller

Total posts: 12
posted September 27, 2005 08:46 AM  
imca rules says u have to run a oem firing order. the way i read it, it doesnt require u to use all 8 cylinders. u have to use the oem firing order bc they(IMCA) doesnt want someone to claim a motor that has the 4/7 swap and not know, cause a lot of headaches trying to figure out why the motor wont run right. lol with out a plug wire on youre probably not going to notice idling. you can try taking a wire off your car and just see what sound diff. there is. We dont run on dry slick very often here in NE so have run into it, but friends down in texas have done it, says it works, you have to change oil more often bc of the alcohol blow by on the dead cyclinder.

bp22m1
Dirt Full Roller

Total posts: 69
posted September 27, 2005 09:50 AM  
thanks for ur input mod95. i think we will try that at the shop this week to see what the sound difference is. it shouldnt hurt teh motor at all should it? it sounds like a free legal version of TC. thanks for your information.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted September 27, 2005 11:12 AM  
A few weeks ago 5 laps into a 25 lap feature driver says he all of a sudden noticed it lost powered and sounded different, almost shut it down but caution came out so he checked guages, everythign seemed fine and felt like it ran fine. After that he said the car only seemed to tighten up on him but was still able to finish the race and move from 20th and almost crack top 5. In the pits it sounded fine, you wouldnt know anything by idleing it. Got home the next day and found a broken pushrod on #7 intake. He had run 19 laps on 7 cylinders and didnt even know it. Worst part is if he had been using all 8 he might have one the thing.

Alltel
Dirt Maniac

Total posts: 180
posted September 27, 2005 11:37 AM  
Just my 2 cents, but, if the guy can pull a plug wire and still whip everyone by over a straight, then some people need to be working on setup. I've got to be making 500+ horses, and I cannot spin the tires with my 4/z on imca tires and a very dry slick track. That is not to say I wouldn't on that track. It might be alot slicker than what I'm used to, but I refuse to believe that someone can kill that much HP in today's age and still be that dominant. Kelly Shryock said in a published article that 650 horses and imca tires is no problem for him to hook up with today's suspension. In fact, USMTS has a rule that states if they can hear your motor missing, and you are going forward, then it is an automatic black flag. Why? Because they can't tech TC but they do know the guys are good enough that someone down on power shouldn't be going forward no matter the track condition. I think I read somewhere also where they said pulling a plug wire is a bad thing to do. You're still dumping fuel into a motor but not burning it. Seems like it could do some damage to the valves, or at the very least cause the headers to glow and shoot flames.
Now, I could be wrong. Maybe he did and it worked, but I'm hard pressed to believe it. I haven't seen anyone even claim to do anything like that in a very long time.

Everyone claims that TC doesn't help that much, but a Dirt Late Model magazine did a private test with one. It is printed somewhere on the net. Maybe someone remembers the link to it, but I cannot recall it. Some drivers were much fast with it, up to 4 tenths a lap. Others didn't see much of an improvement, except for the fact that the lap times were much more consistant over the whole run with TC. Now, if it helps with those giant soft tires, imagine what it could do with those little old hockey pucks!

[This message has been edited by Alltel (edited September 27, 2005).]

widebody
Dirt Freak

Total posts: 296
posted September 27, 2005 12:24 PM  
You guys are kiding yourself. The guy races 5 nights a week, has a bottemless budget, brings 2 cars to race. He is the closest thing to a professional racer that class has.

And all the poping you heard was from him being off the gas rolling through the corners while everyone else was blowing the tires off theres. He carried way more speed into-through-out of the corners than everyone else. He also has a solid crew.
And 1/2 a lap lead at Fonda isnt nothing, when the top runners of any class hit the setup, they will lap more than half the field. Fonda is all setup and momentum.

Guys have beat him before when his setup is off. And if you watched him everyweek you would know he is not very consistant.

And as far as his extra laps go, the officials were woried he was picking up mud or something on the extra lap. I guess hes close alot of the time. BUT in his defense, when the race is over they expect the car to stop on the track to get into the scale area, while others are still racing, especially when he has lapped cars during the race. I dont blame him on that aspect, but IMCA has a rule that says an extra lap is a no-no.

nyimcamod8t
Dirt Full Roller

Total posts: 67
posted September 27, 2005 02:44 PM  
http://www.behrents.com/Merchant2/4.19/merchant.mvc?Screen=CTGY&Store_Code=BPW&Category_Code=DAVIS

$1895 for a tc unit from Behrents, not really that expensive if you can get away with it and win a bunch of races. Why are some people so stuck on the plug wire off deal,I've heard them both at work, they sound different.there was a big rash of TC use in the Dirt mods the last few years up here in the northeast.TC is quite easy to notice if your looking for it.

bp22m1
Dirt Full Roller

Total posts: 69
posted September 27, 2005 04:27 PM  
chris, im pretty sure thats the one in use. the key word in the description of that TC unit is DRIVER REMOVABLE. i rest my case. what do u think chris?

44nymod
Dirt Maniac

Total posts: 120
posted September 27, 2005 05:14 PM  
bp22m1 I agree! I was there or atleast in the back. That had to be the slickest track I ever ran on. This was the first time I ran a 1/2 mile and that flat of a track. I didn't notice the poping because I was to busy trying to keep the car straight but when the other top 4 car's went by I could get back into the groove and follow them but when the leader went by he was absolutly gone you didn't have to worry about being in his way. Some of you guy's from out west have to realize that our tracks up here in the north east are slick but of a different breed then you guy's are accompanied to. I speak from experience. That's why some of us guy's from the Northeast are so fast out to Boone during late heat at night, you guy's say the track is slick and junk, but we feal like we're at home. One more point I'd like to throw out. I'm not a bad driver, I do all my own set-ups and most of the work on the car. On my team I'm the brains as far as the car is concerned. My crew does as much as they can or what I tell them, we never had a problem passing tech out to Boone and can run with the best in the country, but some of our top dog's from out here have been known to just plain out **** out their. Why is that? Maybe because you can't get away with as much! Just my two or three cents.

bp22m1
Dirt Full Roller

Total posts: 69
posted September 27, 2005 08:07 PM  
44nymod. i agree 100% on our slick here in the northeast. and also agree 100% about ur information about boone!!!!!!! if u were in the stands u wouldnt have a had a problem hearing the popping. see ya at FMP!!!!!!

nyimcamod8t
Dirt Full Roller

Total posts: 67
posted September 28, 2005 02:21 PM  
yeah, could very well be.guess if i was gonna run tc that would be my choice. take it with you and no evidence. any of you guys coming to Can-Am next wednesday for the series race?

bigstick4u
Dirt Newbie

Total posts: 3
posted September 28, 2005 02:37 PM  
One time I took one of those cockpit timing retarders (not TC), the kind with a hand-dial that could retard or advance timing up to 15 degrees. The thought was to to start dialing out the timing as the track got slicker. The 2 times that I used it, the header gaskets blew out, and it popped severely.

Usually when you cut out cylinders or lose a spark plug, it doesn't pop, it just sounds rough.

Alltel
Dirt Maniac

Total posts: 180
posted September 28, 2005 06:42 PM  
Found it: http://www.moretraction.com/
read the dirt LM article from the link at the bottom.

I wasn't implying that you guys didn't know how to set up cars or that the track wasn't slick. I was trying to imply that the guy was running TC to be doing that good. Sorry if I hurt any feelings, that wasn't my intention.

We had a guy win like 75% of the races in one year. He went from running 10th to running 1st in one off-season. The only nights I can remember him losing was the night they checked for lockers in the rear-end and the next week. He suffered back to back mysterious rear-end failures in the same night and then didn't run very well the next week. They never checked for lockers again and he went right back to winning. Track tech people. You gotta love'em.

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