60' times

Rick Shirey · 09-21-2009, 07:03 PM

What are some of the things you look at when your 60' times fall off ? Mine have fallen off by around a tenth.I have already tried the usual, new tires,float level,fuel pump delivery,timing,transmission and even went as far as having the converter cut apart.Thanks in advance.

69ss/rs · 09-21-2009, 08:15 PM

Go over the car from top to bottom and look for any suspension binding,any thing broken,bad shocks, bad heim ends etc.

Michael Beard · 09-21-2009, 08:15 PM

Check the oil for bearing material -- make sure it's not the engine going away. Been there, done that...

Ed Martin · 09-21-2009, 09:36 PM

You can also check the compression and the valve springs. Sounds like the engine may be a little tired.

Marty Rinehart Jr · 09-22-2009, 02:23 AM

Rick, you should really start by comparing your on track incremental times and mph of the good runs to the bad. You can then make a better pinpoint of the spot where your losing your power. If your mph is up at 660 and 1320, then you can come to a conclusion, it's not the engine, trans or converter. Look at the other incrementals and find where it's dropping off and if it's only the 60' times that are slow. It may be as simple as the track your racing at may not be preparing the starting line properly due to the car counts being down. They could be trying to make up their profit margin there. I know a lot of the points races we ran at this year, we had to keep the car very loose to make up for a bad track.
Just another opinion. Hope it helps

Jack McCarthy · 09-25-2009, 09:59 AM

leak / comp test motor... maybe banged a few exhaust valves

jack

Paul Precht · 09-26-2009, 08:26 AM

For my car it's the head gaskets leaking between cylinders when the 60 falls off, Paul.

Chad Rhodes · 09-26-2009, 09:02 AM

converter

Mark Yacavone · 09-26-2009, 10:21 PM

Quote:

Originally Posted by Chad Rhodes

converter

A torque converter that loses a tenth won't last long, and it'll let you know what the problem is.
Either the stall will go way down, or way up.
BTW, anybody attempting to check stall speed with the rear wheels on the ground ,will find themselves with a long vacation from NHRA. This is in response to the fatality at Fontana recently.

gmonde · 09-27-2009, 08:40 AM

i have to agree with marty ,,the track preperation has alot to to do with consistancy of 60' times ,,i know if you go on a saturday test and tune track will not be as good as a sunday points day race also,the time of day will affect track performance 12:00-2:30 with sun beating on the track will make for a greasy track

gmonde

09-21-2009, 07:03 PM	#1
Rick Shirey Junior Member Join Date: Apr 2003 Posts: 53 Likes: 0 Liked 0 Times in 0 Posts	60' times What are some of the things you look at when your 60' times fall off ? Mine have fallen off by around a tenth.I have already tried the usual, new tires,float level,fuel pump delivery,timing,transmission and even went as far as having the converter cut apart.Thanks in advance.

09-21-2009, 08:15 PM	#2
69ss/rs Junior Member Join Date: Feb 2009 Posts: 82 Likes: 0 Liked 0 Times in 0 Posts	Re: 60' times Go over the car from top to bottom and look for any suspension binding,any thing broken,bad shocks, bad heim ends etc.

09-21-2009, 08:15 PM	#3
Michael Beard VIP Member Join Date: Sep 2002 Location: Columbus, OH Posts: 4,060 Likes: 0 Liked 13 Times in 9 Posts	Re: 60' times Check the oil for bearing material -- make sure it's not the engine going away. Been there, done that... __________________ Michael Beard - NHRA/IHRA 3216 S/SS

09-21-2009, 09:36 PM	#4
Ed Martin Junior Member Join Date: Sep 2009 Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Re: 60' times You can also check the compression and the valve springs. Sounds like the engine may be a little tired. __________________ Ed Martin SS/IA 910

09-22-2009, 02:23 AM	#5
Marty Rinehart Jr Member Join Date: Dec 2001 Location: Rineharts Performance Race Cars, Thomasville,PA Posts: 490 Likes: 288 Liked 327 Times in 73 Posts	Re: 60' times Rick, you should really start by comparing your on track incremental times and mph of the good runs to the bad. You can then make a better pinpoint of the spot where your losing your power. If your mph is up at 660 and 1320, then you can come to a conclusion, it's not the engine, trans or converter. Look at the other incrementals and find where it's dropping off and if it's only the 60' times that are slow. It may be as simple as the track your racing at may not be preparing the starting line properly due to the car counts being down. They could be trying to make up their profit margin there. I know a lot of the points races we ran at this year, we had to keep the car very loose to make up for a bad track. Just another opinion. Hope it helps __________________ Marty Rinehart Jr 1125 SS STK SG SC SST

09-25-2009, 09:59 AM	#6
Jack McCarthy VIP Member Join Date: Feb 2002 Location: lyndon ky. ... louisville area Posts: 1,313 Likes: 27 Liked 440 Times in 111 Posts	Re: 60' times leak / comp test motor... maybe banged a few exhaust valves jack __________________ Jack McCarthy 3609 STK "the Captain"

09-26-2009, 08:26 AM	#7
Paul Precht Senior Member Join Date: Dec 2001 Location: Elysburg, Pa Posts: 726 Likes: 342 Liked 307 Times in 116 Posts	Re: 60' times For my car it's the head gaskets leaking between cylinders when the 60 falls off, Paul.

09-26-2009, 09:02 AM	#8
Chad Rhodes VIP Member Join Date: Jan 2005 Location: Where the Green Grass Grows, AL Posts: 2,375 Likes: 0 Liked 3 Times in 3 Posts	Re: 60' times converter __________________ Chad Rhodes 2113 I/SA

09-27-2009, 08:40 AM	#10
gmonde Senior Member Join Date: Nov 2007 Posts: 615 Likes: 56 Liked 165 Times in 59 Posts	Re: 60' times i have to agree with marty ,,the track preperation has alot to to do with consistancy of 60' times ,,i know if you go on a saturday test and tune track will not be as good as a sunday points day race also,the time of day will affect track performance 12:00-2:30 with sun beating on the track will make for a greasy track gmonde