Posted By: mikemotorhead
? many passes ? "running the valves" in your racecar? - 07/08/09 05:16 PM
I like to change the oil every 20-25 passes and run the valves at the same time. Overkill??? 
Mike
Mike
? many passes ? "running the valves" in your racecar?
Posted By: nosboy
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 05:41 PM
I like changing the oil more often than that!!! As far as doing the valves,,,once their done,, they're done!! If I check them and they are allright,, WHY BOTHER???
Posted By: Tig
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 06:32 PM
Quote:
I like to change the oil every 20-25 passes and run the valves at the same time. Overkill???
Mike
About the same for oil changes.
I tend to check the lash more frequently after a rebuild, like before a meeting. If you use the parts in the places they originally came from then I've found the lash settles down really quickly. Once they've settled I leave them 'till season end or 'till I break something and the pattern starts again.
Posted By: MR_P_BODY
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 07:04 PM
Quote:
I like to change the oil every 20-25 passes and run the valves at the same time. Overkill???
Mike
I change oil twice a season(about 55 passes maybe more
per change)
and I check the lash on my roller about once a year...
hasnt changed
Posted By: Steve1118
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 07:25 PM
About the oil change interval for me, too, 20-25 runs. I admit it might be a bit excessive, but I'm anal about that, and it's worked, so why mess?
I've got 15 passes on this oil, and will probably change it after the Beaver Nostalgia Nats this weekend.
As far as the valves, I go over them the beginning of the season and let it go.
I've got 15 passes on this oil, and will probably change it after the Beaver Nostalgia Nats this weekend.
As far as the valves, I go over them the beginning of the season and let it go.
Posted By: HemiDart68
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 07:27 PM
I use brad Penn oil so i go a little longer on it. As far as valves, they are usually a first indicator of something going wrong. Ounce the valve train stabilizes they rarely move. ALot of times nothing gets adjusted, just go in and check and make sure all is good in the hood.
Posted By: Barnstorm
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 07:41 PM
Mobil 1 20-25 passes. Valve covers off to check pushrod tips,rocker alignment,oiling. Big spring pressures should be looked at,might as well check lash. SS/AH guys do it every 3-4 passes.
Posted By: FlyFish
Re: ? many passes ? "running the valves" in your racecar? - 07/08/09 07:57 PM
I change the oil once or twice a season...but I don't get to the track as often as I would like (probably less than 40 passes on the oil). Valves, once at the begining...then again if if starts acting or sounding weird.
Posted By: Al_Alguire
Re: ? many passes ? "running the valves" in your racecar? - 07/09/09 04:36 AM
Well you wanna talk anal I guess that is me. We check the lash pretty much after EVERY trip to the track. I usually run the oil for no more than 20 passes or so, never at the track but when we come back froma race and are in that area.
Posted By: 440Jim
Re: ? many passes ? "running the valves" in your racecar? - 07/09/09 01:31 PM
I put new oil in at the start of the season (March).
Run that until July or 50-60 passes. Then store the car over the winter with fresh oil too. If I race a lot, I will change it again during the season (50-60 passes).
I check the valve lash every couple months, but it doesn't need it. A new build requires checking it every race day until I am sure nothing is changing.
Run that until July or 50-60 passes. Then store the car over the winter with fresh oil too. If I race a lot, I will change it again during the season (50-60 passes).
I check the valve lash every couple months, but it doesn't need it. A new build requires checking it every race day until I am sure nothing is changing.
Posted By: BobR
Re: ? many passes ? "running the valves" in your racecar? - 07/09/09 01:40 PM
Quote:
Well you wanna talk anal I guess that is me. We check the lash pretty much after EVERY trip to the track. I usually run the oil for no more than 20 passes or so, never at the track but when we come back froma race and are in that area.
We have our valve covers off at least twice per race. A big lash on one valve means something's not right. We've caught early some pretty serious issues this way. Two races ago we had a tip come off of a titanium valve and the rocker had begun to eat into the stem. We got it before it became a BIG deal. Oil change? We take our motor apart several times per season so the oil get's changed then.
Posted By: mikemotorhead
Re: ? many passes ? "running the valves" in your racecar? - 07/09/09 03:05 PM
"We take our motor apart several times per season so the oil get's changed then."
HOLY SNIKEES Bob
,what motor combination do you run???
Mike
HOLY SNIKEES Bob
,what motor combination do you run??? Mike
Posted By: BobR
Re: ? many passes ? "running the valves" in your racecar? - 07/09/09 04:25 PM
Quote:
"We take our motor apart several times per season so the oil get's changed then."
HOLY SNIKEES Bob
Mike
Procharged SBF. Upwards of 2400 HP.
Posted By: Darryls-Demon
Re: ? many passes ? "running the valves" in your racecar? - 07/10/09 01:00 AM
I work with a guy that runs a big block chevy in PSCA (Hot Street) class. He checks the valves after every run and changes the oil after every race. His motor gets freshened after 70 passes. But the motor sees 9000+RPMs. 
Posted By: FASTFISH420
Re: ? many passes ? "running the valves" in your racecar? - 07/10/09 01:52 AM
I change my oil after 6 to 8 passes and check the valves also..9000 rpm plus..I also run Lucas 0w20 pro stock oil also.. 
Posted By: rowin4
Re: ? many passes ? "running the valves" in your racec - 07/10/09 02:18 AM
I think there's a wide variety of types of motors on this post. Like most things the more power or rpm's the more preventative maintenance. Roller cams will need less checks than solid lifter cams. Some guy's will get more junk in their oil buy pulling the valve covers causing more problems than if they didn't do anything. I change my oil with every oil pan replacement. 
Posted By: gregsdart
Re: ? many passes ? "running the valves" in your racec - 07/10/09 10:39 AM
It all depends on what setup you run. Stock cam, the valve covers come off when it hits the bone yard. Proven, known solid lifter flat tappet combos, once stabilized, once a year? A radical roller, with aggressive ramps and very high spring pressures, every few passes, or if the car slows any measurable amount. Never had a catastrophic failure (whole engine lost due to valvetrain trouble) but have caught many parts going away, was able to fix and race the rest of the day.
Posted By: quickd100
Re: ? many passes ? "running the valves" in your racec - 07/10/09 10:58 AM
I run the valves every spring, they haven't changed since I put the inner springs in after break in. Oil gets changed once or twice a year. Dave
Posted By: Chris'sBarracuda
Re: ? many passes ? "running the valves" in your racec - 07/10/09 11:55 AM
Quote:
It all depends on what setup you run. Stock cam, the valve covers come off when it hits the bone yard. Proven, known solid lifter flat tappet combos, once stabilized, once a year? A radical roller, with aggressive ramps and very high spring pressures, every few passes, or if the car slows any measurable amount. Never had a catastrophic failure (whole engine lost due to valvetrain trouble) but have caught many parts going away, was able to fix and race the rest of the day.
Couldn't have said it any better..
Except the oil change..
I guess, when I feel like it..
Chris..
