He has one of them in the oil pan- they are chewed up as they appear to have ridden past the piston and down the cylinder wall.
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Need help with engine damage (pics)
- Thread starter CyFi6
- Start date
Will update with mroe pics when I get it all taken apart. Right now I have only pulled one piston. The locks in the pan were mangled/broken. The engine has about 15k miles on it, and didn't begin smoking until about 1k miles ago. Before that, it ran perfect (and I drove it pretty hard almost daily). I don't think I have heard anything like this happening with anyone else using Probes. Also, these are 1mm oversize, most people probably use the .5mm oversize, so maybe that could have something to do with the machining of them, but unlikely. Shockingly, the engine had perfect compression across the board...175-180 PSI on all cylinders.90T04;1794824 said:
Wow well I was pretty surprised to find what I did. All the spiral locks that managed to stay in were VERY loose... Either they are too small, the groove was machined too big, or the groove managed to wear out and allow the locks to loosen up. I don't remember them being like this at all when I installed them, but because I expanded them before putting them in maybe the tension on them made them seem tight when they werent. Im surprised any of the others stayed in, and that all of these stayed in as long as they did. I am going to stay away from Probes on my next build... Heres some pics and a video (hope SOPA doesn't incarcerate me for the music in the background).
[video]www.youtube.com/watch?v=dLLiOY6HGk0[/video]
I think the vid shows it all.... EVERY clip that was left was like this.
[video]www.youtube.com/watch?v=dLLiOY6HGk0[/video]
I think the vid shows it all.... EVERY clip that was left was like this.
Can you measure the grove on the pistons not damaged? I would see if it matches with spec and if you can be refunded. Maybe the spiral locks lost their tension? Crazy.
There are people who would argue with me when I say not get probes. Blah blah blah, your buddy used them and they are fine. That's not the point. Their machining is inaccurate and have they fixed the crown of the piston that needs to be ground down because of the rough edges?
I tell everyone, JE pistons are good but high in silicone content so they tend to slap if the piston to wall clearance is incorrect. I prefer CP pistons over anything. They are accurate and when you take a set of pistons they all will mic close and weigh close to each other better than any piston I have seen. Weisco pistons are decent as well but I just favor CP.
I have seen JE, Weisco and CP in high HP builds and when I say high HP I am talking about 1000+HP. Out of those three, I see CP pistons used more by Titan, Boost Logic and UGR in their Lambo builds. SPRacing in Chicago have a lot of builds upwards of 800HP using Weisco pistons. You can't go wrong with these three brands but please, stay away from Probes.
NPR are good OEM replacement for around 400HP.
I tell everyone, JE pistons are good but high in silicone content so they tend to slap if the piston to wall clearance is incorrect. I prefer CP pistons over anything. They are accurate and when you take a set of pistons they all will mic close and weigh close to each other better than any piston I have seen. Weisco pistons are decent as well but I just favor CP.
I have seen JE, Weisco and CP in high HP builds and when I say high HP I am talking about 1000+HP. Out of those three, I see CP pistons used more by Titan, Boost Logic and UGR in their Lambo builds. SPRacing in Chicago have a lot of builds upwards of 800HP using Weisco pistons. You can't go wrong with these three brands but please, stay away from Probes.
NPR are good OEM replacement for around 400HP.
I would call probe for more details if there bad batch they may help you on spec's ect
this will help the company improve on
this will help the company improve on
There is no improving at Probe. If they haven't fixed the crown issue, shoots, they released it with a defect. That's why you should know they will not make adjustments to improve.
They have no quality control to release as CONTINUE to release pistons that have defects with the crown.
They have no quality control to release as CONTINUE to release pistons that have defects with the crown.
well doing nothing will not help
I never liked probe for the mk3 and still don't
they do make good piston's for gm/ford/dodge world thou
I never liked probe for the mk3 and still don't
they do make good piston's for gm/ford/dodge world thou
What company doesn't want our money? If people notice the flaws and stop buying them, they WILL do something about it. Cheaper products make prices more competitive.
You do realize there was a flaw when released. It is not as if it was a flaw in something unseeable, the edges on the top of the piston were rough, rough enough that you can SEE it and they need to be filed down. If a company releases something like that, what do you have to say about them.
I know Devin bought a set recently for his motor and they STILL HAVE THE FLAW.
I bought a set from DM in 2009 and returned them after seeing that. Three years and still a flaw. Isn't that enough? You're telling me, it's a good business practice to pack known defective pistons with defects that you can see with your eyes and continue to do that years later?
I don't get why people need to complain about a flaw that is viewable to the naked eye with no effort at all. That is like saying Albert should sell turbos with chipped wheels until enough people complain or I should sell catch cans and fuel rails with AN fittings whose threads have been damaged and not fix it until people complain. It makes no sense AT ALL.
I know Devin bought a set recently for his motor and they STILL HAVE THE FLAW.
I bought a set from DM in 2009 and returned them after seeing that. Three years and still a flaw. Isn't that enough? You're telling me, it's a good business practice to pack known defective pistons with defects that you can see with your eyes and continue to do that years later?
I don't get why people need to complain about a flaw that is viewable to the naked eye with no effort at all. That is like saying Albert should sell turbos with chipped wheels until enough people complain or I should sell catch cans and fuel rails with AN fittings whose threads have been damaged and not fix it until people complain. It makes no sense AT ALL.
ifyouaint1sturlast
Banned Scammer - I'm whitemike.
I don't know I am not probe
they have sharp edges big whoopy
i just don't like how close the vavle releafs are to the edge of the piston
that all i found out to be an issue
they have sharp edges big whoopy
i just don't like how close the vavle releafs are to the edge of the piston
that all i found out to be an issue
What scares me is that they sold you pistons with the defects. Why haven't they sent them back to manufacture and dropped them as a supplier? Why not send the pistons to a machine shop to be "fixed" and adjust price accordingly?
mecevans;1796612 said:
If that's the case, you have defective parts. You expect every vendor to test all new parts. It wouldn't be new, it would be used. When you purchase something as a vendor, do you expect to test it? Why not test all injectors before selling? The MANUFACTURE should make sure each piston has met their quality standards.
NashMan;1796614 said:
Probe should check their work. Like I said, this all goes back to quality control.
Which pistons would you guys recommend for a low horsepower daily driver build? Piston slap is a major priority, here, would like to avoid slap if possible. I am leaning towards the Wiseco's because they have a minimum piston to wall clearance of around .0025, which is very tight, which seems to reduce the slap when cold issues. From searching I have found that most of those with CP or JE's tend to slap when cold whereas Wiseco's do not. Any forged piston would likely work fine for me as I am shooting for around 400 hp, which is about where I was with the Probes. I do not want to chance it with stock/npr pistons, I want the engine to be bulletproof, I don't need to be worrying about more engine troubles, and I would say I drive my car pretty hard considering it is a daily driver. Thanks for any opinions.
Any piston will slap if the clearance is correct.
If you like Weisco's, get them, they are good pistons and will hold up fine.
If you like Weisco's, get them, they are good pistons and will hold up fine.
Yeah, my Probes slapped on cold start but went away when warm, didn't bother me too much but I would prefer less slap and would definitely want it to be completely gone when warm.
Block in the pics was 1mm over so its getting dumped. Already have another std size block that will be getting bored .5mm over.