Manley Pistons, arrived with not much fanfare

[jdmage_mx5]

I received mine today. Quick question; what P2W clearance is everyone running with these? Manley recommends .0035" but I've seen people mention .0028" in other threads in regards to other Pistons.

[LumberJack]

Originally Posted by jdmage_mx5 I received mine today. Quick question; what P2W clearance is everyone running with these? Manley recommends .0035" but I've seen people mention .0028" in other threads in regards to other Pistons.

Do not go below the minimum recommendation, it's there for a reason. You go any less you risk running piston and cyl wall scoring from the gap being too tight. P2W is generally chosen based on power goals and boost levels, but 99% of forged Piston minimum p2w is .0035


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[jdmage_mx5]

Ps picture of the goods.

[Mazdazilla6]

Are these made of 2618 or 4032?

Edit: Never mind it's in the first sentence of the add....

[Mikey]

I bought I set of these with the rods from Edge and will hopefully have my car up and running next week for the break end period. So hopefully all good.

[Lakespeed6]

800 miles on my set
have yet to check compressions but car is feeling strong @18psi

[EdgeAutosport.com]

Originally Posted by Lakespeed6 800 miles on my set have yet to check compressions but car is feeling strong @18psi

Good to hear! Let us know if anything does develop!

[The Nut]

Originally Posted by Lakespeed6 800 miles on my set have yet to check compressions but car is feeling strong @18psi

That pretty common to break in forged internal at higher (even slightly) than stock boost levels?

[Lakespeed6]

Originally Posted by The Nut That pretty common to break in forged internal at higher (even slightly) than stock boost levels?

I'm quite sure every person here will give you different instructions on how to break in an engine.
I am following the instructions from Freek.
Worked my way up to spring pressure/maxing out the stock injectors after 500 miles.

Hopefully I will get my meth running again, do a compression check, and start turning up the boost soon.

[EdgeAutosport.com]

Best bet for engine break in is to do what your builder tells you too.

[Jtaylor]

Any update with oil squirter clearance issues with these? I am about to click purchase on @EdgeAutosport.com;

Was going to go with the Wiseco's but was unsure if their clearance issues have been resolved. Also like the Gen2 design of these better

[LumberJack]

Originally Posted by Jtaylor Any update with oil squirter clearance issues with these? I am about to click purchase on @EdgeAutosport.com; Was going to go with the Wiseco's but was unsure if their clearance issues have been resolved. Also like the Gen2 design of these better

Click away. They are badass Pistons and yes they clear!


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[acemanz]

Originally Posted by LumberJack Click away. They are badass Pistons and yes they clear! Sent from my iPhone using Tapatalk

Oil Squirter Confirm Clear?! HUZZAWH

i will be picking up these in a few months

[SilverMS307]

Mine should be here tomorrow and hopefully going in this weekend. Just have to hone the cylinders, clean it out, and reassembling starts.

[The Nut]

I think these bad boys will eventually become the fav for builders and buildees alike. On every other platform that has had these pistons for a long while now, these are the elite. They cost way less than CP-E's and they're def going into my car when I can afford to build.

[jdmage_mx5]

I'm in the middle of filing/gapping the rings for mine right now.

[Jtaylor]

Originally Posted by jdmage_mx5 I'm in the middle of filing/gapping the rings for mine right now.

What specs are you going with? I just ordered mine

[LumberJack]

Originally Posted by Jtaylor What specs are you going with? I just ordered mine

Ring gaps will depend on your power goals or the recommendation of your builder or machine shop same with your p2w clearance.


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[JgamB]

They might've arrived with little fanfare, but it looks like they are making their way to the head of the line. My build sheet has these penciled in as well.

[shaneski]

Mine arrived as well, i like the extra length/metal of the skirts, the cylinder walls will enjoy not getting slapped.

[The Nut]

Does anyone have like 5 G's I can borrow?

[jdmage_mx5]

G G G G G


You can have mine ^^^.

[The Nut]

Originally Posted by jdmage_mx5 G G G G G You can have mine ^^^.

Thanks brother! Somebody start my build!

[Mikey]

I should be driving mine next week for the break in period. Would of been this week but damn Kozmic oil feed line started leaking. need to call Edge tomorrow and get here and get on the road... It started like a champ on first turn though.

[shaneski]

Engine builder that has hold of mine is concerned the top ring land on Manleys has no gas pockets compared to CPE ones he has used previously.

[EdgeAutosport.com]

Originally Posted by shaneski Engine builder that has hold of mine is concerned the top ring land on Manleys has no gas pockets compared to CPE ones he has used previously.

This is the first I've heard of this being an issue.

[LumberJack]

Originally Posted by EdgeAutosport.com This is the first I've heard of this being an issue.

Same. These are being used in many builds with mild horsepower to lots of damn power. They're going in my build and I'll be back over 800+ and Justin has no concerns about these Pistons or there design.


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[The Nut]

Originally Posted by LumberJack Same. These are being used in many builds with mild horsepower to lots of damn power. They're going in my build and I'll be back over 800+ and Justin has no concerns about these Pistons or there design. Sent from my iPhone using Tapatalk

Getting some ductile sleeving done sir?

[LumberJack]

Originally Posted by The Nut Getting some ductile sleeving done sir?

ImageUploadedByTapatalk1426742104.206218.jpg

Wayyyyy ahead you broski.


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[Lakespeed6]

Little update on my Manley pistons.
Engine has ~1500 miles and is currently @24psi with a D12 meth. ~400HP

Compression check is 190 +/-1psi
Can't wait to get this turbo actually spinning.

[Tokay444]

That Freek build.

[Tomas]

Will anyone ever make 4032 pistons for us?

[The Nut]

Originally Posted by Tomas Will anyone ever make 4032 pistons for us?

Is there a need? I was under the impression we were running out of fuel before hitting the limits of these beautiful fuckers? Please, someone more learned chime in on this.

[Justin@Freektune]

Originally Posted by The Nut Is there a need? I was under the impression we were running out of fuel before hitting the limits of these beautiful fuckers? Please, someone more learned chime in on this.

With 4032 you can run tighter PWC clearance as it doesn't expand as much. This would last much longer, especially in a street driven car.

Realistically 2618 should only be used in legit race engines that have frequent overhaul intervals. But that's all we have. So it's what we use.

What I really like about these manley Pistons is the longer skirts they use which is very similar to the length of an Oem piston. And then the top ring thickness is much thicker than what wiseco offers.

[jdmage_mx5]

Originally Posted by Justin@Freektune With 4032 you can run tighter PWC clearance as it doesn't expand as much. This would last much longer, especially in a street driven car. Realistically 2618 should only be used in legit race engines that have frequent overhaul intervals. But that's all we have. So it's what we use. What I really like about these manley Pistons is the longer skirts they use which is very similar to the length of an Oem piston. And then the top ring thickness is much thicker than what wiseco offers.

Would you mind sharing your thoughts on PWC and ring gap with these Pistons? I know you have installed a few sets. I'm just curious as to what the more knowledgeable are running spec wise with these.

[acemanz]

Originally Posted by Justin@Freektune With 4032 you can run tighter PWC clearance as it doesn't expand as much. This would last much longer, especially in a street driven car. Realistically 2618 should only be used in legit race engines that have frequent overhaul intervals. But that's all we have. So it's what we use. What I really like about these manley Pistons is the longer skirts they use which is very similar to the length of an Oem piston. And then the top ring thickness is much thicker than what wiseco offers.

So given that we are using what you consider to be a product that should really only be used in an engine with regular overhaul intervals, what is your thoughts about the realistic longevity of these in a Daily Driver car.

how long do we got doc?.. give it to me straight..

[Justin@Freektune]

Originally Posted by jdmage_mx5 Would you mind sharing your thoughts on PWC and ring gap with these Pistons? I know you have installed a few sets. I'm just curious as to what the more knowledgeable are running spec wise with these.

Always use their recommendations as a guidleline and adjust each spec per customers engine use/goals.. Each engine is built to spec, so there is no one size fits all.

Originally Posted by acemanz So given that we are using what you consider to be a product that should really only be used in an engine with regular overhaul intervals, what is your thoughts about the realistic longevity of these in a Daily Driver car. how long do we got doc?.. give it to me straight..

I have guys that have 40k+ miles on their engines, and as lex mentioned, short of louder piston slap, haven't had any ill effects. But things that do occur is more blowby and oil consumption. The key with keeping her healthy starts with a proper break in, maintenance, and definitely a good PCV system. I like big ports to let that CC vapor escape whether 10an fittings to a vented can, or breather cap.

I think Manley really hit it on the head by using the thicker top ring as opposed to the other pistons that are available right now. Each motor that I have used them in, is running, and all were pulling crazy manifold vacuum within just as few miles. I gave one of the engines a little boost (1-2psi) about 5 miles into my road test and that thing just wanted to pull. Made me all giddy inside. lol

[Micha]

We have fueling options now. So running out of fuel is in the past. It just costs a bunch of moolah.

[Lex]

This all depends on how tolerant you are to blow by and piston slap . I don't see 60k miles as a problem and probably more. They won't break, they will just have more blowby, consume more oil and may become noisier.

[Tokay444]

Manley also recommends stacking the ring gap in reverse, with the larger gap on the top ring. This explains the lack of expansion groove.