Car lost time
#1
Junior Member
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Join Date: Dec 2009
Posts: 3
Car lost time
I've been racing the 1/8th mile @ 6.29 to 6.32 seconds until I lost the rearend will making a run. I was finishing a run when the pinion gave way. We replaced the gears using the same ratio. When I went back out we were running low 6.50's. That trip I broke the roller off a rocker arm and it cut into a retainer. When I was was replacing the retainer I noticed that I had a broken valve spring also. I replaced the spring and retainer and went out for test and tune last night. We ran low 6.50's again. Is it possible to have lost time due to gear change even tho they are the same ratio or could there still be something wrong with my motor?
#2
Senior Member
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Join Date: Jun 2009
Location: Wi
Posts: 522
How long have the valve springs been in the motor? Either way i would check and replace all of them they may be getting weak.. Do not make too many changes at once or you may miss where the problem was. If that does not do it relook at the rearend..... JMO
#4
Senior Member
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Join Date: Jun 2009
Location: Wi
Posts: 522
Originally Posted by BadBoyChevy
The valve springs have less than 100 passes on them. Could I have broke it when my car hit the rev limiter.?
#6
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Join Date: May 2004
Posts: 2
Re: Car lost time
Originally Posted by BadBoyChevy
I've been racing the 1/8th mile @ 6.29 to 6.32 seconds until I lost the rearend will making a run. I was finishing a run when the pinion gave way. We replaced the gears using the same ratio. When I went back out we were running low 6.50's. That trip I broke the roller off a rocker arm and it cut into a retainer. When I was was replacing the retainer I noticed that I had a broken valve spring also. I replaced the spring and retainer and went out for test and tune last night. We ran low 6.50's again. Is it possible to have lost time due to gear change even tho they are the same ratio or could there still be something wrong with my motor?
we had it happen when we broke a rear one time.
#10
I got to thinking back on this post and I had a simlier problem after breaking a valve spring which in turn bent a push rod..etc...replaced this stuff and still lost 3+ tenths...it actually felt like the car gained 600 lbs.
Come to find out after pulling off the intake I wiped out a lope on the cam shaft....
it never popped skipped or anything just became real sluggish..
i'm sure by now you found it..just thought I would post this to help someone in future
Come to find out after pulling off the intake I wiped out a lope on the cam shaft....
it never popped skipped or anything just became real sluggish..
i'm sure by now you found it..just thought I would post this to help someone in future
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