Racers chime in #2
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skrews
Well-Known Member
Depends on engine and number of runs/lap time on it.
I'm not asking about Nitro motors or anything like that sorry I should have stated the question different OK For the Average Joe who races a couple weekends a month,How often do you guy's tear down and inspect???? At the end of the year???? every two years???? Never???? Just run the piss out of it till something breaks???? ThanksSteve
skrews
Well-Known Member
I would leak down check it every year, and freshen it up every 2-3 years depending on leak down numbers. Some times just a set of rod bearings and lower main bearings is all thats needed.
mikedevore
Well-Known Member
When it breaks. LOL
I will do a leak down test at the end of the season to see if there is any concerns.
If all is good, I just back off the rocker shafts to remove the spring pressure.
I don't check the rod or main bearings, other than checking my magnetic oil drain plug & cutting open the oil filter to check for metal.
Now, even if you do inspections, it can still blow up without notice.
I have only lost two engines in 30 years, now mind you these are low 11 second cars.
Stock crank & rods.
Both broke do to failed componets.
The last one (360) had 925 passes on it. 5-seasons of races. the worst cylinder was at 7 percent with a cold engine.
The first race of the season, the first time trial, it ran as fast as it ever had.
When it went thru the lights, it had a Kieth Black (KB107) come apart.
Sure, I would have caught it while doing a tear down inspection, but it never gave me a reason to do it.
The other engine (340) broke the crank behind the thrust.
It also had several seasons on it as well. Never gave a reason to do a teardown.
I do have a freind that does tear down inspection every season or two.
Is there any moral to this story, probably not. LOL
Even so, he still broke a rod that he had looked at before.
I will do a leak down test at the end of the season to see if there is any concerns.
If all is good, I just back off the rocker shafts to remove the spring pressure.
I don't check the rod or main bearings, other than checking my magnetic oil drain plug & cutting open the oil filter to check for metal.
Now, even if you do inspections, it can still blow up without notice.
I have only lost two engines in 30 years, now mind you these are low 11 second cars.
Stock crank & rods.
Both broke do to failed componets.
The last one (360) had 925 passes on it. 5-seasons of races. the worst cylinder was at 7 percent with a cold engine.
The first race of the season, the first time trial, it ran as fast as it ever had.
When it went thru the lights, it had a Kieth Black (KB107) come apart.
Sure, I would have caught it while doing a tear down inspection, but it never gave me a reason to do it.
The other engine (340) broke the crank behind the thrust.
It also had several seasons on it as well. Never gave a reason to do a teardown.
I do have a freind that does tear down inspection every season or two.
Is there any moral to this story, probably not. LOL
Even so, he still broke a rod that he had looked at before.
compression ...leak down test....
maybe change out valve springs once in a blue moon....watch for smoke went it fires up or going down the track...otherwise.....kind of hard for an average bracket racer to catch a rod before it going to break..
or if i can to blow up an engine I put in a certain 71 Duster I own...it seems to be killing them monthly...
maybe change out valve springs once in a blue moon....watch for smoke went it fires up or going down the track...otherwise.....kind of hard for an average bracket racer to catch a rod before it going to break..
or if i can to blow up an engine I put in a certain 71 Duster I own...it seems to be killing them monthly...
SpareParts
Well-Known Member
When I want more power. Seriously I never leave a combo alone for more than a year lol
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