Piston upgrade?

[Storamin]

Originally Posted by Rooz

ok, who can't read here?

Let me put it in simple terms....

One piston is bad = Needs to be replaced = would make sense to upgrade at same time for performance = Where to find a piston to upgrade to?

Never mentioned a bad tranny or a need for a turbo on this thread.....

if you start upgrading parts in your engine then you need to upgrade all parts in your engine. having pistons that don't fit because they're built for an upgraded engine on your stock engine isn't fun.

[cainchapman]

The BMW motorsport guys get pistons custom made for about $200NZD each. I doubt OEM ones are cheaper.

[DEATH2000]

Rooz, heres some info and links i found for ya:

For BMW performance applications you may want to use a BMW performance piston and rings to increase compression and horsepower. One of the best ways to increase performance is to add a little compression to the engine by adding domed pistons and performance piston rings.

http://www.drivewire.com/bmwparts/pi...dcylinder.html

http://www.bmwpiston.com/piston_kits.html

https://www.vacmotorsports.com/cgi-b....pl?man=Wiseco <--- $1,000US for a set of S52 compettion pistons. They can also custom order pistons for ur specific needs.

[Rooz]

THe Maxsil pistons... not sure how they enhance performance...

Introducing MaxSil™ BMW Pistons with Tefcote™ for all BMW engine applications. MaxSil BMW pistons are engineered for optimized longevity, higher performance, and improved fuel economy. MaxSil Pistons are lighter and stronger than original pistons with 13 percent silicone content - allowing for tighter cylinder clearance (0.0015") than original pistons. The tighter clearance, reduced heat expansion, and reduced friction offer better performance and longevity than original pistons while protecting horsepower output for the life of the engine.

In addition, MaxSil piston skirts are coated with an anti-friction, Teflon composite coating for additional friction and heat reduction. All MaxSil pistons are engineered and pre-fitted with Sealed Power chrome-moly piston rings. Five year unlimited mileage warranty. Complete BMW engine rebuild kits also available.

[jms]

Originally Posted by Rooz

Introducing MaxSil™ BMW Pistons with Tefcote™ for all BMW engine applications. MaxSil BMW pistons are engineered for optimized longevity, higher performance, and improved fuel economy. MaxSil Pistons are lighter and stronger than original pistons with 13 percent silicone content - allowing for tighter cylinder clearance (0.0015") than original pistons. The tighter clearance, reduced heat expansion, and reduced friction offer better performance and longevity than original pistons while protecting horsepower output for the life of the engine.

In addition, MaxSil piston skirts are coated with an anti-friction, Teflon composite coating for additional friction and heat reduction. All MaxSil pistons are engineered and pre-fitted with Sealed Power chrome-moly piston rings. Five year unlimited mileage warranty. Complete BMW engine rebuild kits also available.

sounds sexy, and with a five year warranty, I'd at least consider them.

[Rooz]

Finally found something!

AM probably gonna go for some higher compretion pistons!

My man Jo from KO is now working at Midnight Autoworks, I finally got a hold of him today and I told him what had happend and what I was looking for and he said he'd look into it for me, but he's pretty sure he can get me some higher compretion pistons for a good price

[///M Power]

So I guess you're not plannign on going forced induction.

[Spieluhr]

what kind of performance upgrades will this give you? aside from you will already be set up for F/I when you choose to go that route?

[B_w.]

higher compression pistons are a bad thing for forced induction. higher compression = kaboom
where are you going to get software to run this? i have never heard of anybody doing this before.

[Rooz]

gonna have to bore the block and slapp them in and do software, my car will be close to a 3.2

The piston set is a 2 size over bore. Here are the specs:E36 328 OBD2
Teflone coating / 2nd oversize / 84.48mm (+0.50)
Bore Clearence 0.0015" Wrist Pin 0.0005" over

It's not gonna be cheap, but it wil get me to where I want to be 300+ hp at the wheels, and yes, if I don this, I won't do forced induction

[Rob]

Originally Posted by DEATH2000

https://www.vacmotorsports.com/cgi-b....pl?man=Wiseco <--- $1,000US for a set of S52 compettion pistons. They can also custom order pistons for ur specific needs.

Bad idea on those pistons. You want a lower compression ratio, not higher. Higher will get you better performance and higher HP, but you will be forced to run 100+ octane race fuel. If you are looking at FI possibilites, you really want to get down to low 9s, high 8s if possible. An easy way to do so is getting a thicker, aftermarket headgasket. Also, you would need to bore and hone the block if you want S52 pistons to fit.

What I recommend is just to find a nice condition, used piston to pop into place, get new rings, and stroke the engine to a 3.1. All you need to do is get a S52 crank and S52 rods and that will get you M3 HP/TQ numbers easily. The only problem is that it will increase your compression to somewhere between 10-11, which 93 octane or higher is required. I recommend getting a thicker headgasket in the process, so you don't have to worry about pre-ignition issues with 93 octane and will be ready for FI. The one thing that I would stay away from is the head. The worst I would do on the head is the cams.

[///M Power]

Originally Posted by Rooz

but it wil get me to where I want to be 300+ hp at the wheels, and yes, if I don this, I won't do forced induction

[B_w.]

turbo would be way better than na. quit wasting your money and do it right. na mods are more expensive for less gains.

[Storamin]

Originally Posted by ///M Power

x2

[B_w.]

so have you given up the idea of having a high power e36? you can get almost m3 like power with cams and m50 intake manifold. why do this other stuff when forced induction will be cheaper in the long run?