First Pull Ever. Need Some Input now though on gear choice please - Competition Diesel.Com

Zeppelin654 · 08-03-2012, 05:52 AM

First pull ever:

250 feet. Couldn't get on top of the charger. I went 4th gear 4 low. I launched at 4500 rpm. I never brought it up to boost and it didn't run to its full potential. 34's with 3.54 gears, nv4500. I think if I launch it at 5-5300 rpm it wont fall off as much and ill be able to keep it lit. (I was only at 30 lbs of boost where on the street, I can see 50 psi….)

…..maybe 3rd 4th low or 2nd gear 4 hi…..I'm not sure. I think I need to slip the clutch just a bit more until boost climbs before I fully release the clutch….I hope to pull again on Friday night in Pittsfield, PA near Warren. Maybe I'll give 4th gear another shot. Can't give up on it after one time, ya know?

Any suggestions are greatly appreciated. Thanks. Here it is:

http://www.youtube.com/watch?v=yi6Kp5JYRDk

ktm1302 · 08-03-2012, 06:11 AM

3rd gear would let you get on top of your charger better and get your ground speed up sooner, where momentum is your friend and the sled is lighter....

Good pull though

Zeppelin654 · 08-03-2012, 06:20 AM

thank you sir. I'll have to try different things until I find the sweet spot I think….

ktm1302 · 08-03-2012, 06:25 AM

You will get it, with a few more hooks

If u can get on top of that charger early and get a good bite she will haul!!

*Valair1* · 08-03-2012, 07:45 AM

34's and 3.54's good luck with 4th, I'd probably try 2 hi it is in between 4l and 3l

zstroken · 08-03-2012, 07:48 AM

I think with the 34" tires 4th low with 3.54 is dreaming. However you did go farther than I expected.

BTW thanks for the great video.

BigB82789 · 08-03-2012, 08:00 AM

If that was Clearfield, PA you got lucky trying to run that gear because every time I've been there the track was garbage. Once you get on a tight(er) track you will probably fall off the charger. Try a slower gear. 2nd high is about the best choice. Thats still pretty steep with anything higher than a 33" tire unless you got alot of power.

Zeppelin654 · 08-03-2012, 01:21 PM

so do you guys think 2nd hi or 3rd low. I'd like to stay on the low side, so as to not break too much stuff….Sorry about the video. All my buddies "forgot" to video it and my other friend recorded it on his crappy phone. I wonder if I should not give up on 4th 4 low just yet, until I try launching it at a little higher rpm next time….The track at clearfield was pretty decent actually (probably b/c I was the 4th truck to run last night and not the 100th lol)

nasty 2005 · 08-03-2012, 01:31 PM

I run 34 with 3.54's in 4th gear and it runs great! I finish in the top every weekend, I have tried 3rd low it won't load the motor enough and you won't have any wheel speed it has to be 2hi or 4th low.

*TMONEYDIESEL* · 08-03-2012, 01:41 PM

Quote:

Originally Posted by nasty 2005

I run 34 with 3.54's in 4th gear and it runs great! I finish in the top every weekend, I have tried 3rd low it won't load the motor enough and you won't have any wheel speed it has to be 2hi or 4th low.

Sham Wow

Zeppelin654 · 08-03-2012, 04:35 PM

Quote:

Originally Posted by nasty 2005

I run 34 with 3.54's in 4th gear and it runs great! I finish in the top every weekend, I have tried 3rd low it won't load the motor enough and you won't have any wheel speed it has to be 2hi or 4th low.

Exactaly the info I was looking for. Thank you!!!!

*Valair1* · 08-03-2012, 04:53 PM

I ran 3.54 gears pulling in 4L 33" tires, it was really hard on the rest of the driveline. So after many broken parts, carriers, gears, pinions and axles, I changed the gear ratio to 4.88's and seems a lot better. So if your not gonna make it a dedicated puller better drop a gear. JMO

Then the motor went so I'm building one now.

Zeppelin654 · 08-04-2012, 07:00 AM

Why do you think it was the reason for all the broken parts? I thought 4 low, and more specifically 4th gear in the nv4500, was the strongest combo and also provided the best final drive ratio? I'd like to stay on the low side. If having a good load on the motor means using 4th gear, I'll just have to start at a little higher rpm, say 5-5200....

johnstontruckin · 08-04-2012, 09:05 AM

Quote:

Originally Posted by Zeppelin654

Why do you think it was the reason for all the broken parts? I thought 4 low, and more specifically 4th gear in the nv4500, was the strongest combo and also provided the best final drive ratio? I'd like to stay on the low side. If having a good load on the motor means using 4th gear, I'll just have to start at a little higher rpm, say 5-5200....

If your wanting this thing to be a competitive puller you will prolly want to go to 4:88 and 33s or 5:13 and 35s. It would be so much less stress on the drivetrain.

BigB82789 · 08-04-2012, 09:20 PM

If you dont have the motor or the air flow to support the rpms from the start revving it up more isnt going to help. To an extent yes, but it will just drop down to the rpm its gonna run down the track any way.

Zeppelin654 · 08-05-2012, 10:55 AM

I feel as though my motor can handle the higher rpm. I also don't want to get new gears now due to already having spent so much money. My turbo is kind of limiting me, however the runner intake, 210 cfm flowing head, and 188/220 cam should help with air flow. Bottom end is fully balanced as well including a zero balanced ati damper. Pump flows 650cc's going to 5x.020's up to 6000 rpm so the fuel is there as well...... Turbo wasn't fully lit in the video.... I feel like if I slipped it a bit more and got boost up higher, I could have stayed on top of the charger for the whole pull, instead of falling off at the 200' mark

johnstontruckin · 08-05-2012, 11:07 AM

Quote:

Originally Posted by Zeppelin654

I feel as though my motor can handle the higher rpm. I also don't want to get new gears now due to already having spent so much money. My turbo is kind of limiting me, however the runner intake, 210 cfm flowing head, and 188/220 cam should help with air flow. Bottom end is fully balanced as well including a zero balanced ati damper. Pump flows 650cc's going to 5x.020's up to 6000 rpm so the fuel is there as well...... Turbo wasn't fully lit in the video.... I feel like if I slipped it a bit more and got boost up higher, I could have stayed on top of the charger for the whole pull, instead of falling off at the 200' mark

What rpm did you carry down the track?

Zeppelin654 · 08-05-2012, 03:15 PM

About 3600-3800 down the track.

johnstontruckin · 08-06-2012, 08:56 AM

Quote:

Originally Posted by Zeppelin654

About 3600-3800 down the track.

I would try second on the high side. I dont think 4th low is a good choice without a gear change and you also have a ton of fuel for that turbo with that tight of exhaust housing. Could be putting out your fire. Just my

08-03-2012, 06:11 AM	#2
ktm1302 Name: ktm1302 Title: Green Behind the Ears Status: Not Here Join Date: Jan 2012 Member`s Gallery Posts: 70	3rd gear would let you get on top of your charger better and get your ground speed up sooner, where momentum is your friend and the sled is lighter.... Good pull though __________________ Petercar with too much frame 09 MC DRW fun hauler "Changing ZipCodes" B&G Performance Diesel

08-03-2012, 06:25 AM	#4
ktm1302 Name: ktm1302 Title: Green Behind the Ears Status: Not Here Join Date: Jan 2012 Member`s Gallery Posts: 70	You will get it, with a few more hooks If u can get on top of that charger early and get a good bite she will haul!! __________________ Petercar with too much frame 09 MC DRW fun hauler "Changing ZipCodes" B&G Performance Diesel

08-03-2012, 07:45 AM	#5
Valair1 Name: Valair1 Title: Valair Inc. Clutch Status: Not Here Join Date: Jul 2008 Location: Crowley Texas Member`s Gallery Posts: 2,498	34's and 3.54's good luck with 4th, I'd probably try 2 hi it is in between 4l and 3l __________________ 97 4x4 *"The Farm Truck"* 13 4x4 CCSB Laramie 15 4x4 CCDRW Valair Performance Series Clutches

08-03-2012, 07:48 AM	#6
zstroken Name: zstroken Title: For $$$ your name here Status: Not Here Join Date: Sep 2006 Location: Western Michigan(by the lake) Member`s Gallery Posts: 23,151	I think with the 34" tires 4th low with 3.54 is dreaming. However you did go farther than I expected. BTW thanks for the great video. __________________ 2008 4x4 Megacab, 68RFE 97 Dodge gone.... 24V P-Pump Mafia member #1(retired) Thanks to Mumau Diesel, Goerend Transmission, Northeast Diesel Service!

08-03-2012, 08:00 AM	#7
BigB82789 Name: BigB82789 Title: Too Much Time Status: Not Here Join Date: Sep 2007 Location: Ohio Member`s Gallery Posts: 2,997	If that was Clearfield, PA you got lucky trying to run that gear because every time I've been there the track was garbage. Once you get on a tight(er) track you will probably fall off the charger. Try a slower gear. 2nd high is about the best choice. Thats still pretty steep with anything higher than a 33" tire unless you got alot of power. __________________ 08 Dodge 01 Dodge 91 Dodge

08-03-2012, 01:31 PM	#9
nasty 2005 Name: nasty 2005 Title: Cummins Tech. Status: Not Here Join Date: Apr 2011 Location: S. Minnesota Member`s Gallery Posts: 301	I run 34 with 3.54's in 4th gear and it runs great! I finish in the top every weekend, I have tried 3rd low it won't load the motor enough and you won't have any wheel speed it has to be 2hi or 4th low. __________________ 11' CCSB, MCC by Anarchy, AFE, Revmax, Flopro, Applied Performance Products, Caltracs, Leveled, 35's Sold-95' ECLB R.I.P-05' QCSB

08-03-2012, 04:53 PM	#12
Valair1 Name: Valair1 Title: Valair Inc. Clutch Status: Not Here Join Date: Jul 2008 Location: Crowley Texas Member`s Gallery Posts: 2,498	I ran 3.54 gears pulling in 4L 33" tires, it was really hard on the rest of the driveline. So after many broken parts, carriers, gears, pinions and axles, I changed the gear ratio to 4.88's and seems a lot better. So if your not gonna make it a dedicated puller better drop a gear. JMO Then the motor went so I'm building one now. __________________ 97 4x4 *"The Farm Truck"* 13 4x4 CCSB Laramie 15 4x4 CCDRW Valair Performance Series Clutches Last edited by Valair1; 08-03-2012 at 04:57 PM.

08-04-2012, 09:20 PM	#15
BigB82789 Name: BigB82789 Title: Too Much Time Status: Not Here Join Date: Sep 2007 Location: Ohio Member`s Gallery Posts: 2,997	If you dont have the motor or the air flow to support the rpms from the start revving it up more isnt going to help. To an extent yes, but it will just drop down to the rpm its gonna run down the track any way. __________________ 08 Dodge 01 Dodge 91 Dodge