Since more and more of us are doing this, time start a thread with specific info on the matter. I ask that all who post to this thread do thier best to stay on topic!!
Here is the info I already posted about the JE vs SRP pistons:
Here is some interesting info I got on Wiseco Pistons: http://www.porttuning.com/wiseco_pistons.htm
On that page here is what I found most interesting:
The forged piston industry uses two type of Aluminum alloys 2618 or 4032. The 2618 alloy is used for force induction applications. It has a higher density which makes it stronger, and heavier than the 4032 alloy. The 4032 alloy is used in natural aspirated(N.A.) applications. It's lighter than the 2618, because you need every mechanical benefit when trying to produce high horsepower numbers with a N.A.. Both alloys are run with 0.003" piston to wall clearance measure 1.300" from the bottom of the oil control ring.
Rumor has it that forged piston are noise, but that is not the case with WISECO forged pistons. Wiseco has had less problems in this area then anyone else. As you read above, most of the forged piston manufactures use the same alloy. Noise control comes from the actual shape of the piston. Wiseco machines it's pistons with a barrel on the piston skirt which controls piston slap better then anyone else. Customers have called back saying these pistons are silent, or they here a very low tick for about one minute. I have driven VW's for over 15 years, and all the engine I have owned have always been noise for the first minute. To reduce noise even more, LR Engineering piston kits come with an offset pin to reduce nosie even more. This is not a standard practice in the forged piston industry, because some customer will forget or get confuse during installation. Each set will include instructions how to install the piston, how to break them in, and what grit to use for honing.
The rings that come with each kit are made by Nippon in Japan which Wiseco is the distributor for in the states. Almost all piston and ring manufactures like Total Seal, JE, Ross, Venolia and others buy these rings from Wiseco. The ring thickness will be 1mm, 1.2mm and 2.8mm.
The piston pins are made out of Chrome-moly for extreme duty, and will be 3.5mm to 4mm thick. If you have had a problem with the pins breaking or coming out, that was due to flexing of the pin. When the pin flexes, it pops out the circlip. These Chrome-moly pins should solve that problem.
Make sure whoever makes your forged pistons makes room for the oil sqirters our engines have. Mine were chopped off by the pistons!
For those wanting to quiet down their forged pistons, you have the option of getting the skirts coated with Poly-Moly. A prominent company that specializes in this is:
http://www.swaintech.com
They also do the thermal barrier coatings to keep you piston domes cooler. Here are their prices:
http://www.swaintech.com/price.html
Here is the info I already posted about the JE vs SRP pistons:
Here is some interesting info I got on Wiseco Pistons: http://www.porttuning.com/wiseco_pistons.htm
On that page here is what I found most interesting:
The forged piston industry uses two type of Aluminum alloys 2618 or 4032. The 2618 alloy is used for force induction applications. It has a higher density which makes it stronger, and heavier than the 4032 alloy. The 4032 alloy is used in natural aspirated(N.A.) applications. It's lighter than the 2618, because you need every mechanical benefit when trying to produce high horsepower numbers with a N.A.. Both alloys are run with 0.003" piston to wall clearance measure 1.300" from the bottom of the oil control ring.
Rumor has it that forged piston are noise, but that is not the case with WISECO forged pistons. Wiseco has had less problems in this area then anyone else. As you read above, most of the forged piston manufactures use the same alloy. Noise control comes from the actual shape of the piston. Wiseco machines it's pistons with a barrel on the piston skirt which controls piston slap better then anyone else. Customers have called back saying these pistons are silent, or they here a very low tick for about one minute. I have driven VW's for over 15 years, and all the engine I have owned have always been noise for the first minute. To reduce noise even more, LR Engineering piston kits come with an offset pin to reduce nosie even more. This is not a standard practice in the forged piston industry, because some customer will forget or get confuse during installation. Each set will include instructions how to install the piston, how to break them in, and what grit to use for honing.
The rings that come with each kit are made by Nippon in Japan which Wiseco is the distributor for in the states. Almost all piston and ring manufactures like Total Seal, JE, Ross, Venolia and others buy these rings from Wiseco. The ring thickness will be 1mm, 1.2mm and 2.8mm.
The piston pins are made out of Chrome-moly for extreme duty, and will be 3.5mm to 4mm thick. If you have had a problem with the pins breaking or coming out, that was due to flexing of the pin. When the pin flexes, it pops out the circlip. These Chrome-moly pins should solve that problem.
Make sure whoever makes your forged pistons makes room for the oil sqirters our engines have. Mine were chopped off by the pistons!
For those wanting to quiet down their forged pistons, you have the option of getting the skirts coated with Poly-Moly. A prominent company that specializes in this is:
http://www.swaintech.com
They also do the thermal barrier coatings to keep you piston domes cooler. Here are their prices:
http://www.swaintech.com/price.html
Last edited:
:wtf: 
