oil?

Discussion in 'PSI Superchargers Tech Questions' started by Div6 safety, Mar 4, 2006.

  1. Div6 safety

    Div6 safety New Member

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    Hey folks,
    Quick question,, Dont want any oil brand wars here. I have a blown 468 in our digger. We have run syn 60 weight in the past. Would 20/50 be better? I kinda think it may be to light. BUT thoughts?
    Russ
     
    #1
    Last edited: Mar 4, 2006
    Div6 safety, Mar 4, 2006
  2. Mike Canter

    Mike Canter Top Dragster
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    I would stay with the 60 wt syn.
     
    #2
    Mike Canter, Mar 5, 2006
  3. HootersFunnyCar

    HootersFunnyCar Member

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    Oil

    We run 20/50 Lucas with a quart of stabalizer. Works great, no bearing problems and worth a few HP.

    Scott
     
    #3
    HootersFunnyCar, Mar 5, 2006
  4. Div6 safety

    Div6 safety New Member

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    ok, I have both. We blew the bottom end last fall. Looking at the bearings, they were toast. Somebody had told us to take the oil restrictors out and I figure this was the result.
    Thanks for the info guys

    Russ
     
    #4
    Div6 safety, Mar 5, 2006
  5. wildride boy

    wildride boy Top Sportsman Racer

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    I run 5/30 full syn for last 6 years without any problem . when i replace it once a year it looks like new, it's BBC estimated at 2000 HP . Is it possible to run this grade of oil with more hp likeTop alcohol cars?
    Claude
     
    #5
    Last edited: Mar 6, 2006
    wildride boy, Mar 6, 2006
  6. was R4K

    was R4K Member

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    wildride- might work if you dumped in a "LOT" of prolong or lucas additive/stabilizer- The heat is so high it all runs like water after the burn out on both alky and nitro cars. Cylinder pressures are so high now that I am amazed any oil stays between brgs and crank surface, thus the need for a good stabilizer. just my opinion.
     
    #6
    was R4K, Mar 6, 2006
  7. mike tkach

    mike tkach New Member

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    oil

    div6 safety.things to consider when choosing oil weight,bearing clearance,amount of hp produced&do you preheat oil before run.also,rpm,s.we run a dragboat 540 kb olds,under 8000 rpm app 1500 hp,50 wt oil&always preheat oil to 150 degrees,also add 20% lucas oil stabilizer.bearings live forever,remember,this is not a tafc or tad going to 10,500 rpm and running on the ragged edge,lol mike t
     
    #7
    mike tkach, Mar 6, 2006
  8. kosky racing

    kosky racing Comp Eliminator

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    When you took out the restrictors did you put plugs back in ? We ran Olds @ chevys a long time and had very few oiling problems. Also ran 25/50 and no problems. Mike
     
    #8
    kosky racing, Mar 7, 2006
  9. Div6 safety

    Div6 safety New Member

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    I would not think we run much over 7,500 rpm. Maybe 700 hp. The bearings looked bad. BUT had been in the car for a few years. We may have run it 5 or 6 times in the past season. We are not much into the compitition of things yet. I like making the noise, LOL. I have had our share of busted parts, 5 glides, 3 heads is about all. Always run 60 weight, we do not preheat.
    best so far is a 7.444 @ 189. Put the front end way up and set it down 93 feet later. But still having fun. OH and yes I did put plugs back in.

    Russ
     
    #9
    Div6 safety, Mar 7, 2006

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