I looked up on the internet and it said something about cast is just poured metel and forged smashes metel to make the product or something? someone please explane better?

While on the topic of engine parts
Whats the different piston types used for
Dished
domed
flat top
any other type I missed.

 

The 'net is your friend!

http://en.wikipedia.org/wiki/Forging

http://en.wikipedia.org/wiki/Casting

Rich

 

ok thats what I thought it ment, anyone got an idea on the different uses for different pistons? Im wanting to build a 383 (not building anytime soon I must buy the parts first slowly) and have quite a few questions, but I can ask all of them later.

 

If it's a relatively mild build up, a cast "hypereutectic" high silicon piston is light, appropriate and relatively inexpensive. KB is a good brand. For higher performance a more expensive piston forged from a low silicon alloy is a better choice. A good forged piece is especially needed for a nitrous or blower setup.

Rich

 

Well, I defiently wanted forged internals, What pistons would you recommend for nitrous useage. I don't plan on spraying the car constantly, but would every now and again (a weekend thing) With forged internals how big of a shot is considerd safe?

 

There are a number of good piston brands out there. Ross and JE are two of my favorites. A street small block set up for nitrous ought to be able to handle a 200hp shot without a big problem.

Rich

 

SRP and eagle also are decent brands with good quality, but when it comes to motors more often then not you get what you pay for.



-john

 

SRP is JE's "sportsman" brand. Thye use the same designs but a different alloy than for the JE line. I use SRP's in my NA BBC race motor. The load on the pistons is a lot less in that application than a boosted or nitrous small block. The mechanical load is ~30% higher per unit surface area and the heat load is greater as well. For nitrous or boost you really need a tough piston, especially for a small block. I have JE's with coating by Swain Tech in the Camaro.

Edit: numbers are good! The Camaro has a BMEP almost TWICE the big block. Nitrous, especially when brought in at relaively low rpm drastically increases cylinder pressure. Remeber, the variables in BMEP are hp, rpm, and displacement. Nitrous small block pistons have a hard life.

Rich

 

So you guys would recommend SRP pistons for nitrous? Is a 200 shot safe for a daily driver or should I put more like a 150? This is all planning in advance. I think im going to drop another 1k on my car payment so its almsot paid off.