MindIfISmoke's? Built Part 3.

MindIfISmoke?

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Passenger side
47c5d719-1341-0db2.jpg
 

rford426

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Why did you go with the 4032?? I thought your last failure was due to the wrong piston and ring gap..? Wonder if the wire tuck had anything to do with it...maybe wire to injector shorted out or something else...Goodluck man I can't believe the shit you have gone through
 

MindIfISmoke?

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Wire tuck had nothing to do with it my friend. I was really careful with that stuff. The pistons should have been fine. There are 3v making similar, reliable power if not more on pistons like these. This is exactly like a b302 from brenspeed.

Last failure was all ring gap.
 

MindIfISmoke?

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If you look closely at the pistons you will see they are slightly burnt. I'm having the injectors flow tested tomorrow to rule that out.
 

rford426

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Below that clean break you will find all melt.

4032s and turbos do not get along well.
Well^^^
Why did you chose to go with the 4032s ? just curious

I was just thinking out loud here man you wouldn't think a spike would do this much damage...hell my car spiked to 22psi when the shop didn't have the wastegate vaccum lines routed correctly...But then again it was on the dyno and they were watching everything...
 

BruceH

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Stupid 4032



That looks like a stress fracture with melted aluminum thrown in along the sides. I wonder if any kind of eddy current inspection is done to the finished pistons prior to sale.

I'll bet you could do a motor swap blindfolded by now but if you want some help just call. Do you have a truck to haul the replacement block? I'm about 10 miles from Dan let me know if you need anything.
 

MindIfISmoke?

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Nobody knows about that yet Bruce. Hush hush lol

I will be up there tomorrow afternoon if you'd like to roll by
 
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BruceH

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Zero reason to melt a piston if thats what happened. Thats all tune, barring a stuck shut injector. Hate to point fingers, but it is what it is.


As I understand it the tune was for 16psi with 15.5 degrees of total spark advance up top, 9.8 cr and Matt was using 101 fuel. That's not a recipe for a blown motor imo.

I suppose I'm somewhat biased because I know the tuner. I can tell you he makes sure the maf transfer is correct prior to doing anything further with the tune. The maf xfer is important because load is based off of it. Load is important because the fuel and spark tables are based from load and rpm. It's not like he's someone who just plugs value files in and calls it a day.
 

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