SpecRacer.com • View topic - Motor seems to lose power in 5th sounds flat

Board index » Technical and Repair Discussions

Change font size

Print view

Motor seems to lose power in 5th sounds flat

Post a reply

9 posts • Page 1 of 1

flame123 flame123's Profile Novice Typer Posts: 10 Joined: Mon Jun 10, 2013 11:20 pm	Posted: Tue Jun 18, 2013 12:07 am Motor pulls until 5th gear, keeping it in the 5600 rpm range, seems to quit pulling sounds flat. Car his new fuel pump...any ideas...
Top

steve kramer steve kramer's Profile Needs a Life!!! Posts: 511 Joined: Tue Nov 29, 2011 10:12 pm Location: Texas Chassis: 821	Posted: Tue Jun 18, 2013 8:45 am Given your bacgkround - nitro.
Top

GregCirillo GregCirillo's Profile Needs a Life!!! Posts: 484 Joined: Thu Dec 01, 2011 11:26 am Location: Rockville MD Chassis: 298	Posted: Tue Jun 18, 2013 9:05 am flame123 wrote:Motor pulls until 5th gear, keeping it in the 5600 rpm range, seems to quit pulling sounds flat. Car his new fuel pump...any ideas... 5th gear, 5,600 RPM? Could it be terminal velocity? You can start with a fuel flow (volume) test. Search the forum for it.
Top

Racer X Racer X's Profile Needs a Life!!! Posts: 766 Joined: Wed Nov 30, 2011 1:03 am Chassis: 098 Facebook Page: http://www.facebook.com/#!/denny.stripling	Posted: Tue Jun 18, 2013 10:22 am If you aren't in a 5 car train at Daytona (or perhaps at another track going downhill with a hurricane for a tailwind), you aren't reaching 5600 RPM in 5th gear... Unless I misread your post. Did I? ____________ Bay 12, please.
Top

flame123 flame123's Profile Novice Typer Posts: 10 Joined: Mon Jun 10, 2013 11:20 pm	Posted: Tue Jun 18, 2013 1:01 pm I don't drive- shifts into 5th front straight Road America, car sounds flat does not pull... fuel maybe. I am still trying to get a grip on this car. I read almost every post on forum, I can tell you have a vast knowledge of these cars. You are correct about rpm's, shift point 5600 from 4th. Thanks Racerx/Greg
Top

dave dave's Profile dave's Website Needs a Life!!! Posts: 1200 Joined: Wed Nov 30, 2011 1:38 am Location: Sunnyvale, CA Chassis: 068 415 Facebook Page: http://facebook.com/HSERacing	Posted: Tue Jun 18, 2013 1:16 pm Which 5th gear do you have? Dave Harriman "It looks crazy, I understand. But, we only live once and I am going to give it a good try." - Alex Zanardi
Top

Needs a Life!!!

Posts: 766
Joined: Wed Nov 30, 2011 1:03 am

Chassis: 098
Facebook Page: http://www.facebook.com/#!/denny.stripling

Posted: Tue Jun 18, 2013 1:32 pm

flame123 wrote:I don't drive- shifts into 5th front straight Road America, car sounds flat does not pull... fuel maybe. I am still trying to get a grip on this car. I read almost every post on forum, I can tell you have a vast knowledge of these cars. You are correct about rpm's, shift point 5600 from 4th.
Thanks
Racerx/Greg

Only on the front straight? 5600 would be somewhere past S/F I presume, yes?
Does it do it on the run to T5 or Canada as well?

Denny

____________
Bay 12, please.

Top

Ready to Write a Book

Posts: 71
Joined: Thu Feb 14, 2013 2:14 am
Location: St. Louis, MO
Chassis: 115
Facebook Page: https://www.facebook.com/TurbotomRacing

Posted: Fri Jun 21, 2013 11:45 pm

Denny, this thread is from my team member, yes, the car seems to bog/lose power on run to T5 and down to Canada Corner as well. Everyone on the sideline I talk to tells me that down the front straight or down into T5, my car sounds totally different than others, sounds flat...

Tom Muffler
Armed Forces Motorsports LLC
http://www.armedforcesmotorsports.com

All-Star Cpr Racing
Armed Forces Motorsports Group
http://www.facebook.com/TurbotomRacing

Top

BFun BFun's Profile Forum Hermit Posts: 102 Joined: Mon Dec 12, 2011 1:10 pm Location: Huntsville, AL	Posted: Mon Jun 24, 2013 4:22 pm I had a similar issue that turned out to be a fuel pressure regulator. Bruce Funderburg SEDiv SRF #4
Top