Think this is what killed my motor?

[Marble]

Last year while racing my car inexplicably started going slower and slower at the track. Then it died on the last pass. I pulled it out of the trailer and saw there was a low oil warning on. I shut it down and later pulled the oil filter. Full of metal. So I saved up enough cash and am in the process of pulling the motor. I pulled the blower off and I saw these rather deep and substantial gouges in the screws of my blower. I won't know what the real cause is until I pull the entire thing out, pull the pan, bearings and valve cover but anyways...I was slightly disappointed.

Whatever came through, was substantial. Odd since I've never ran without the filter.

 

[Wes06]

are all the pictures the same lobe pair, just angle/lighting?

hows the intercooler look?
theres a chance that debris gets shot out of the chamber through the intake, and into the lobes from there.

 

[RocketcarX]

Those are thread marks from a bolt

 

[Wes06]

umm.....Are we allowed to say drywall screw still?

 

[Marble]

So that set up is Kenne Bell stock set up so nothing came from the heat exchanger.

I had not worked on anything in the intake prior to the failure. Air filter is snug and no holes in the intake. I guess maybe something in between?

That is the same light and pictures of all of the lobes. Each lobe has damage.

 

[Marble]

are all the pictures the same lobe pair, just angle/lighting?

hows the intercooler look?
theres a chance that debris gets shot out of the chamber through the intake, and into the lobes from there.

Anything is possible I guess. But the engine still runs and actually sounds normal. You can hear a rod knock when it shuts off but at idle it sounds fine.

Antifreeze is clear and none in oil.

 

[RocketcarX]

Anything is possible I guess. But the engine still runs and actually sounds normal. You can hear a rod knock when it shuts off but at idle it sounds fine.

Antifreeze is clear and none in oil.

I bet you find thread marks on the pistons

 

[rebus]

FOD from UFO.

 

[Sky Render]

Did you buy your blower from Seer?

 

[Marble]

Im not sure what Seer is...

I am glad that before I decided to start pulling it apart I saved enough cash to basically buy an entire new long block if needed. I don't think I'll need an entire long block, but whatever is broken will beer fixed/replaced etc.

Seems likely that I'll need pistons...guess I can raise CR just a smidge now.

 

[CammedS197]

I'm interested in what this was.

Is it even possible something blew back up through the intake valves?

 

[stkjock]

Im not sure what Seer is...

Seer was a member who had a drywall screw go threw his blower and IIRC he tried to sell it and it was a shit storm.

 

[Marble]

Oh ok. I bought this direct from KB brand new. This next weekend I'm going to continue tear down of all the stuff that needs to get out of the way to pull the motor. I'm sure it will be a bit before it's out and a good diagnosis of the issue is known.

 

[RocketcarX]

I'm interested in what this was.

Is it even possible something blew back up through the intake valves?

no

 

[bujeezus]

Sub'd just to see what went through there.

 

[05stroker]

umm.....Are we allowed to say drywall screw still?

Yes! Lol

Im guilty of a bolt in the motor.

 

[travelers]

With a supercharger that sits above the IC, (Kenny Bell, Whipple VMPs) I would think a bolt wouldn't make it through the fins of the IC. In fact it should be sitting on top of the fins. Now if it's a very small piece that could find it way through the fins that yes, it would make it's way into a cylinder.

 

[eighty6gt]

Stuff always makes its way through the IC - so many of the blown engines I have seen on forums also have ruined superchargers.

 

[Marble]

Stuff always makes its way through the IC - so many of the blown engines I have seen on forums also have ruined superchargers.

I went out and thoroughly looked at the top to the IC and did not see anything obvious. I'm not sure i will ever know what went through it or if whatever went through the blower had anything to do with the failure.

I honestly think it's just a rod bearing failure. At least hoping.

The motor had 30k on it living between 500-700 hp. Probably 400 passes over 10 years. It's not like it was driven nicely.

Be patient guys on getting updates. Between work and three teenagers life is busy.

 

[lito]

Stuff always makes its way through the IC - so many of the blown engines I have seen on forums also have ruined superchargers.

No need when you have an open bypass recirculating air and metal parts

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