JE, Mahle, Vossner or wiseco pistons?

[arotished]

Looking for pistons for my second engine, gonna be 82,5MM and 8,5:1 (or 9:1) CR as I want to have the spool instead of high power on big boost.

Still trying to get my head around which pistons to buy, I currently have REC pistons (8:1 CRin my engine but cant get a hold of REC anymore.

[ElementR]

I went with the Mahle Powerpack as they are the OEM supplier and the alloy they use allows for tighter clearances. Price wasn't bad either. I want to say around $650 IIRC

[okkim]

If you want to have good spool, don't even think about less than 9.0:1. I would use JE's. It can be difficult to find 9.0:1 82.5 mm pistons from the other manufacturers. At least I have find out that difficult.

Where can you find 82.5 mm Mahles?

[ElementR]

Mine were 81.5mm. I didn't catch the 82.5mm. Are you locked in on the 82.5mm bore already? If not, consider the 81.5mm.

[arotished]

82,5mm gives true 3L so I kinda want it. My current engine has 82mm which gives 2,945cc I think.

[JMTx86]

I have a set of 9:1 JE pistons already balanced if youre interested. They bump you up to 2.8l.

[redline380]

Mahle absolutely. I have no numbers to back my claim up, but I feel the sweet spot is going to be 9.5:1 on E85. I run 8.5:1 on my 1.8t and its a dog under 4k rpm.

[arotished]

These are normal stroke? I'm gonna have 3L crank on my new engine

[arotished]

I have a set of 9:1 JE pistons already balanced if youre interested. They bump you up to 2.8l.

These are normal stroke? I'm gonna use a 3L crank

[Mikse]

These are normal stroke? I'm gonna use a 3L crank

What is the advantage in spool up over 2,7l with GT size turbos?

[Seerlah]

I'm from the 1.8t world, but JE I have noticed always have the most complications and ironically cost the most than the other two listed (don't know about Vossner). Mahle is stock for the AEB block with a Mahle stamp on the pistons, and Wiseco simply has the best track record (haven't seen one documented mishap with these pistons). I have a spare block I plan on stroking out (currently on AEB Mahle pistons with Brute rods on an otherwise stock block, building a head on the side with a 530p turbo) with an FSI forged crank (already picked up) and plan on 83mm Wiseco pistons. But Mahle is also a good option. For the best, many go custom with one or more companies I can not recall the names of (built to order).

[okkim]

People say "Mahle Mahle Mahle", but show me where you can buy 82.5 mm pistons for 3.0 crank and CR 9.0 or higher!?

[Mark00s4]

can't you get custom pistons made to order?

[arotished]

People say "Mahle Mahle Mahle", but show me where you can buy 82.5 mm pistons for 3.0 crank and CR 9.0 or higher!?

You can get 9:1 at 82,5mm from Mahle but dont think you can get higher?

[okkim]

For the 3.0 crank?

I don't know where to get those, I have never seen anywhere.

[Seerlah]

For those who don't know, the 3L crankshaft creates a longer upward and downward stroke. You use the same stock length and journal sized specs for the rods, along with wristpin size. But with the longer upward and downward strokes, the pistons now must be more shallow to compensate. If not, the pistons would basically smash the cylinder heads on each upward stroke and it simply won't work. That is why they refer to them as stroker cranks. The upward and downward strokes will now be more than with the stock crank.

[JMTx86]

Yes stock stroke

[jaychen]

For those who don't know, the 3L crankshaft creates a longer upward and downward stroke. You use the same stock length and journal sized specs for the rods, along with wristpin size. But with the longer upward and downward strokes, the pistons now must be more shallow to compensate. If not, the pistons would basically smash the cylinder heads on each upward stroke and it simply won't work. That is why they refer to them as stroker cranks. The upward and downward strokes will now be more than with the stock crank.

we know.

[Seerlah]

I know most do. But people who stumble upon this thread may not, and I would rather educate than belittle (though I do like reading your posts with chuckles behind the keyboard and not placed in font, but you are an old school B5 head. if people don't know, purchased my AEB pistons and Brute rods off Jaychen years back in his Peasant Mobile days and still running them till this day...strong). So now people can learn more about motors, including the one they make combust when they place their foot on the gas pedal.

Wasn't necessarily informing people in this thread, but those who may stumble upon it and want to be included in the thread. Can also help the OP out if those who are now more educated can possibly assist in sourcing 82.5mm stroker pistons with a 9:1 CR (compression ratio: 9:1 intake vs exhaust once pistons compress the air for combustion on the upward stroke to make it easy to understand but is more entailed, which has to do with what time the ECM grants spark which is ignition timing. things take time to fully combust, so you want to time the spark as much as you can in advance to produce the most powerful downward stroke before the ECM retards ignition timing). I'll look into those companies that make custom ones later. I think CP is one that is favored though, for custom pistons.

[Seerlah]

Shit, reading comprehension 101 fail. OP wants stock stroke. Oops!

Disregard some of my last two posts. Info still relevant.

[jaychen]

you're a good dude. 10 year veteran stripes. came up from a foot soldier to a general.

[Seerlah]

You're a good dude too. People just may get the wrong impression of you because of what I consider funny posts. lol

Don't know how, but your posts end up on my profile page. hahaha

[Seerlah]

Did some quick research and I think CP is the company I was referring to when it comes to custom pistons. Give them a call and see if they do it. Matter of fact, any brand you are interested in give a call and see if they will do a custom set for you. At that point, price point comes into play. But if you read the Wiseco piston descriptions (just learned this now), I see why they have such less (I have came cross none documented) failure rates. This is for the 1.8T 83mm stroker pistons, but wonder if it applies to the 2.7t also. Because if so...my vote still stands with Wiseco.

Pistons I plan to run with on my 2L build later on, but the description may relate to the 82.5mm stock stroke pistons (research and find out): http://www.ringer-racing.com/product...categoryId=188

[Cacti]

Go with a 4032 alloy for more a of a daily driver.

[Seerlah]

More research. This is the CP custom piston order form page. Looked into their catalog, and there is no piston for the 2.7t. But there is for the 1.8T, and how I know about them.

http://www.cp-carrillo.com/pt-3507-pistons.html

[jaychen]

Go with a 4032 alloy for more a of a daily driver.

At what point does the need for 2618 come into play?

[Cacti]

A majority of the aftermarket piston companies only sell 2618, and also are a lot more customizable. VLM spec supposedly made 800WHP on stock pistons. I think I recall AMD doing 700WHP but running into issues with piston wring lands breaking. 4032 have less thermal expansion but can not take as much abuse as 2618. I think Mahle makes aftermarket 4032 with modified ring lands.

[Mikse]

People say "Mahle Mahle Mahle", but show me where you can buy 82.5 mm pistons for 3.0 crank and CR 9.0 or higher!?

You can get Mahle 142 9,3:1 CR for 3.0l from Issam for a decent price. Custom CR is a lot more $$. But he lives on the wrong side of the pond :/

[arotished]

They make 92,80MM stroke pistons as well :)

[Seerlah]

Supertech has an 8.8:1 CR 82.5mm for the 2.7t. Problem is QC (quality control) with QED, and not sure if his customer service is back up to par or not. Nothing wring with quality of parts (ie Gold Cams) other than a few mishaps, but nobody is perfect. Issue was him having health issues, iirc. But with 8.8:1 CR that is the compromise between 8.5:1 and 9:1 when 9:1 used to be the compromise for 8.5:1 and 9.5:1. Just another option if you can get your hands on them. Decently priced.

http://www.qedpower.com/QED%20VW-Aud...ton%20page.htm

[replica_rs4]

They make 92,80MM stroke pistons as well :)

I got an extra set of je 83mm 3l pistons 9:1comp on hand. They were installed in to short block and then pulled for another je set with different comp and enlarged valve relief. They are missing 2 oil rings that would be easy to replace. Pm me if interested. Let em go cheap.

Sent from my SM-N900W8 using Audizine mobile app

[Drehmoment]

http://www.rec-tuning.de/de-schmiede...impressum.html

Have you tried calling them ? PH# and e mail in above link.

BTW REC uses Mahle blanks/forgings or at least used to.

[arotished]

83mm is kinda on the limit? PM sent

[Tiluleshpingen]

I know most do. But people who stumble upon this thread may not, and I would rather educate than belittle (though I do like reading your posts with chuckles behind the keyboard and not placed in font, but you are an old school B5 head. if people don't know, purchased my AEB pistons and Brute rods off Jaychen years back in his Peasant Mobile days and still running them till this day...strong). So now people can learn more about motors, including the one they make combust when they place their foot on the gas pedal.

Wasn't necessarily informing people in this thread, but those who may stumble upon it and want to be included in the thread. Can also help the OP out if those who are now more educated can possibly assist in sourcing 82.5mm stroker pistons with a 9:1 CR (compression ratio: 9:1 intake vs exhaust once pistons compress the air for combustion on the upward stroke to make it easy to understand but is more entailed, which has to do with what time the ECM grants spark which is ignition timing. things take time to fully combust, so you want to time the spark as much as you can in advance to produce the most powerful downward stroke before the ECM retards ignition timing). I'll look into those companies that make custom ones later. I think CP is one that is favored though, for custom pistons.

thank you and please keep at it bcz at least am reading an learning! subscribed!

[PwrWgn]

Dude update your build thread Arothished! We all thought you just said F-it after those photos of your oil pump

[UkuRiSh]

83mm is kinda on the limit? PM sent

I had JE 83mm with 9.0:1 and 92.8 Stroke best setup ever ! What kind limit are you talking ? many people did big power and high boost on 83mm.