HAHA I still have that video of you getting your penalty shot. We really need to get that off the phone and on YouTube...you did take your beating like a man, Ill give ya that.

 

I listened to the advice of Erik at H&K engines for my pistons. Went with Wiseco and damn happy about it. They made the pistons I needed and did a great job. Patience is a virtue that you'll wish you had if you just go with what you can get in a hurry instead of getting the best.

The rotating assembly isn't where you want to cut corners.

 

I used the Wiesco piston in my setup and did not have to turn down the sensitivity for my knock sensors? Pretty good for a forged piston.

 

Wiseco Pistons

Richard

 

I just got my Wiseco Pistons I ordered from Brian. It was my first time dealing with Brian (and Al) and as others have said, Very helpful. I'm very imprested with the pistons. THANK YOU Brian and crew!

 

I am using L92 heads on my LS2 engine so I chose the new Diamond pistons designed for the L92 heads with valve relief for the same. It seems a natural to use these new Diamond pistons with L92 valve relief for you guys using L92/LS3 heads. The top ring land is great for use guys using nitrous also for extra strength. LOL wrist pin size is .927 so after market rods like the Scat H-beams are the rods I will be using. Got them all from SDPC for a great price.

 

With the chamber shape on the L92 heads, diamond pistons are for an average mediocre setup. If that is okay with you then the Diamonds are for you.

If you are after a very efficient chamber with more power making possibilities then the dome L92 Wiseco piston would be an excellent choice for that. I've used both here recently and the motor with the Wiseco's made more power. Diamond didn't offer a dome piston for the L92 at the time they were ordered. They are noisier as well. The wisecos sound better in the bore without the slap you hear normally.

 

I have diamond pistons...... Erik at HKE had a problem with Wiseco at the time he built my motor IIRC. Either the order was wrong or the parts never arrived or Wiseco wasnt on board at the time. Regardless, the pistons are not as important as the builder setting the motor up with the correct rings, the correct specifications for your application.

A nitrous motor takes more to turn over than an NA motor, it is tighter on the bore and takes more HP to turn over. It also holds the compression from a shot of nitrous better, but looses HP NA to a looser motor. This is what has been explained to me, if yall care to clarify...... please do.

 

I use them both and have had great experiences with both. I have several applications where I always use Wiseco and several where I always use Diamond as well due to their shelf parts being just right for what I needed in that particular application.

I have tons of experience with Brian Nutter at Wiseco and I also have done a ton of stuff with Eric Simone at Diamond. I can't say anything but the best about both of these guys. They both know what they are doing and want to help out the LSx guys.

Both of these companies have a nice skirt they run that works well with the shorter cylinders of the LS1 too which is a must on the stroker deals. To know exactly which one to use I just look at the forging and rings and then what is most readily available.

My crazy super stroker pistons I have always had Wiseco do so far as their forging still clears everything a little better than anyone elses but Diamond has also changed their base LS1 piston shape and it's very nice as well.

 

I vote for Wiseco as well.

I had them in my 412 LS2, still going strong when I puilled the motor out and I am using them again in my 455 LS7.

A big thumbs up for Brian Nutter here as well.

BTW Brian if you read this I will get you that cross section and flow information you asked for. It is at least a few week away still, well at least the flow numbers are.

 

i am amazed no one uses JE, what just LPE is the only one???

 

I use JE in some stuff but not the LS1 stuff. They had several LS1 pistons that didn't work too well and not enough stock numbers.

 

You folks voting for Wiseco.... or Diamond...... really, take a step back a second. If your vote really means something you have tried both pistons and found that one makes more HP or last longer or takes more abuse than the other. Right now you are just happy with what works.

IMO the Difference is about as negligible as an Eagle vs Callies crank. Sure one may look better, but when it comes down to it...... they both work. Will one make 10rwhp more than the other, hell no.

So just as Erik said, whether you choose Wiseco or Diamond, you cant go wrong. Every builder has a preference. Every piston company has a different design. From what I hear Wiseco has a pretty good dome/dished piston for the L92 head, and from what I have I know Diamond makes a stout flattop with L92 reliefs, ****.... I tried to mess mine up with stupidity.... but it told me to **** off.

 

To be honest with you, there are major differences between all of the manufacturers. Cranks, rods, pistons, heads, etc. So many things that a average guy doesn't have the tools to measure or ways to test. I see racers on forums all the time defending manufacturers simply because they chose that manufacturers' parts for their own engine. Maybe a given manufacturer DID have the best piece at that time, but we as manufacturers are constantly battling to have the next best piece.

As people in the manufacturing industry, we're friendly with each other and we often hang out at shows and races etc. There are a few *********, but that's pretty rare because we all like cars. Here's the thing about pistons in particular, I'll quote my friend Tom Jung from Arias: "they're round and they go in the hole". To a certain extent that's true, but there are so many little things to making parts "right" and it's a constant battle to maintain the good things and improve on others. The question is whether you as a racer demand "the best" for your engine or can be happy with a part that simply fit your expectations. That's not always a bad thing if you're on a budget.

Those of us on the inside of the manufacturing industry see each others parts all the time. We KNOW who has the best part for a given market and it's not always us. We know which issues a given manufacturer has and whether they're making progress (or even care to). There's also a big difference in the AVERAGE quality of a piece company churns out versus what they CAN do for certain high end markets. I personally pride our company that even our "cost competitive" parts are made to a high grade even if they're a "low feature" piece. I hope that makes sense.

There are roughly 13 manufacturers of aftermarket pistons in the U.S. and most of us have been in business for a long time. To be in business for that long, a company carves out a niche and may have parts that excel in certain markets and fail in others. I should state that there are some manufacturers that kick *** in some markets, but couldn't make a LS part worth a damn. That's cause the owners simply "like" working with certain markets and choose be the best at what they know. When not in a public forum, I often give props to other manufacturers if they have a good piece for a given market, but I'll also protect my customers from manufacturers that don't if it means an engine might fail to perform or last.

 

i have had diamonds and wiseco. Wiseco always has the best stocking options that are useful to me and Brian Nutter and crew are always top notch with advice. I never have had any probs with the diamonds...just like the stocking options of the wisecos

 

i have used both and cant complain about either, personally i would rather use the wiseco's. About $100 less than the diamonds from most places and i dont feel like the diamonds have anything over the wiseco.

 

All I have to say is

 

Opposite of my experience. My Wiseco's were almost $300 more than my Diamonds.

Worth it to me.

 

Guys, read Brian's post a couple of times. He speaks for manufacturers of any kind of part, automotive or otherwise. I look for manufacturers that do their good work on every part. That doesn't mean all the parts cost the same. You need to pay more for features or specials not on everyday parts.

Thousands of good parts help make a reputation, but one piece of junk can spoil it in a hurry. If the "do it right every time" philosophy pervades the company, your chances of getting great parts are very high. Don't expect those kind of parts to be cheap. Competitive in price with others of the same quality, yes, but rarely cheap.

Ya' hardly ever get what you DON'T pay for.

Jon

 

I will be. I already paid for them and filled out the order form for a custom set. They are the only pistom company out of all named in this thread and then some that actually answered the phone. They answered all my questions, were extremely helpful, and knowledgable. I called diamond four times over three days, left my number, waited, etc.... and could never get a hold of someone.