Glenn's dragster thread

[GlennLever]

You must have a very understanding wife!!

I was allowed the hole because I agreed to build her a new kitchen (which is almost done, just have to paint the inside of two more cabinets and put knobs on four doors and it is done (three years of building))

[JeffV8]

Your never done next it will be the bathroom. 

[GlennLever]

Your never done next it will be the bathroom. 

One down stairs bath is done, another awaits as well as an upper, small price to pay to have my fun, and excellent crew chief and BUG, don't get in her way at the track.

[proriv63]

Hi Glenn,
What slick do you run?  rim width?


thanks,
John

[GlennLever]

Matt has the engine in the dragster apart,the crank needs to be ground, bearings need replacement.





A conservative estimate is there are 200 runs on these parts.

Plan is to now check every 50 runs.



There were never any shavings in the oil filter. It appears they were just hammered until they started to squeeze out the side and rub against the crank journal. The crank does need to be ground.



I could not get the shot I wanted of the cam. The one lobe has the start of a dish at the top. We will replace the cam with the same grind but with a more blower friendly lobe separation.



I still think they look nice. I believe the engine is developing about 850 HP, we will put it on the dyno when rebuilt



Full update with pictures on my web site.
http://www.leverfamilysite.com/2010_Front_Engine_Dragster_Week_2014_01_06_E.htm
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[ricardo1967]

Glenn,
I'm not pointing fingers or intending to be a smart aleck, but aren't the crank and bearings too short lived?

What lube oil was used? Was the oil diluting bad? How often was changed? What's system pressure?

Can the Pontiac go roller (cam)?

[wideopen231]

If all bottoms are beaten out on mains and the top of rods you have some strong detonation going on.Either lean or to much timing especaily as soft as you are running blower.JMO From coloring I would say you got lucky.Looks like some heat on cpl of them.

As for tear down every 50 runs.IT COST NOTHING TO WORK on car was one of Alan Starr's favorite sayings. Cutting filter open or oberge is amust if not already doing so.

  I always mic bearings new and when pulled down look back at numbers.If more than cpl thou I look for why.

[ricardo1967]

But I'd expect that detonation at this level to at least crack plug's porcelains, right?

[GlennLever]

Glenn,
I'm not pointing fingers or intending to be a smart aleck, but aren't the crank and bearings too short lived?

What lube oil was used? Was the oil diluting bad? How often was changed? What's system pressure?

Can the Pontiac go roller (cam)?

Oil was change regularly, I did not cook to remove alky, I replace the oil with new, Brad Pen 40 weight. I do have problems with contamination from alky, pressure is 65? if I remember right, I would have to go back and look at the data. I have a roller for the soon to be built aluminum block (for two season from now), I do not want to spend the money now on one.

[GlennLever]

If all bottoms are beaten out on mains and the top of rods you have some strong detonation going on.Either lean or to much timing especaily as soft as you are running blower.JMO From coloring I would say you got lucky.Looks like some heat on cpl of them.

As for tear down every 50 runs.IT COST NOTHING TO WORK on car was one of Alan Starr's favorite sayings. Cutting filter open or oberge is amust if not already doing so.

  I always mic bearings new and when pulled down look back at numbers.If more than cpl thou I look for why.

Timing is 30 degrees, EGR s on all cylinders, plugs all read cold. I might suspect hydrologicaling maybe with the head gasket problems I have had (leaks). System One filter, no filter to cut open, no pieces found when cleaning.

Mic the bearings in now part of maintenance but has not been in the past.

[GlennLever]

But I'd expect that detonation at this level to at least crack plug's porcelains, right?

No indication of detonation on the plugs or pistions

[ricardo1967]

Thanks for the answers Glenn. It sucks, but at least a bearing set and a crack regrind don't require a mortgage loan.

[dreracecar]

Minimum 10# of oil pressure for every 1000 rpm

[GlennLever]

Minimum 10# of oil pressure for every 1000 rpm

Sounds like we are good then as our max RPM is set at 6500

[masracingtd1167]

Minimum 10# of oil pressure for every 1000 rpm

  With some of the Comp stuff we are lucky to have half of that with the 0 weight oil we use!