Wiseco forged pistons and arftermarket rods

Hey guys, I'm after a bit of advice from the gurus on a couple of things. I'm about to buy parts for my VG30DETT engine build, and on the CZP website they have Wiseco pistons and Eagle rods for very good prices. My questions are:

1. I've heard that Wiseco pistons in particular are noisy. I know forgies are noisy by design and because of material type, but I've heard bad stories about Wiseco in particular. I've also heard that they've changed their design since the initial production run to fix the problem. I've already asked one member here their opinion, I'm after other experiences of people who have bought them recently and running them. I've leaning towards Wiseco because they're about half the price other other reputable brands like JE and CP.

2. I've also read that the stock rods can handle 600hp, I'm aiming for 500hp, so I'm thinking even though eagle rods are pretty cheap, they're not really required. Anyone have reports of big power on stock rods, and if the Eagles are a decent rod? Again they're around half the price of other good brands.

Cheers

 

1/ Wiseco are high silicon pistons so not noisy .
JE are low silicon pistons so noisier when cold (piston slap)

2/Might as well Put eagle rods in ..you have come this far .
eagles have done over 800rwhp on the specialty z car


this is the combo I'll be running

 

Hey Beano...I just biught wisecos and about to buy eagle rods. When I bought about 3 months back thet were a little cheaper than JE and Arias and look almost too good to put into the motor (magnifcant piece of engineering) but the general comment was that they were in the top 3 choices. Hoping there is no negative issues about them as I am about to start the build and order the rods, too late now anyway. Waiting in anticipation for comment on your thread.

 

Hey Black Beast, I've been through the wiseco.com website and can't find any info on them being a low silicon piston. I know what you mean, I was reading about JWT forged pistons being high silicone, and being able to run tigher piston to bore clearances, but they're not available any more.

I hear what you're saying about the eagle rods, they're only $520USD and come with ARP rod bolts, so probably not worth mucking around and just get them. When I heard stock rods can do 600hp, I thought its probably a bit over the top, and the money could go elsewhere in the build.

 

I'm running Wiseco Pistons and Eagle H-Beams for over 2 years and very happy with them pushing 500HP at the treads.

 

wiseco and JWT are HIGH silicon

stock rods are forged and will do 600hp (500rwhp) with ARP bolts but I like said might as well put eagles in case you ever want more power.

 

Wiseco is the only company that does an offset wrist pin design. Before they didn't have this feature in the pistons. It was revised and the piston "slapping/knocking" went away.

Wiseco is a great piston of choice for the value. If you are looking for even more value I would suggest the probe variant. These are well suited for your application. As with anything though proper clearances and build detail are crucial no matter what you are assembling.

Stock rods are good. Have them shot peened and install new ARP rod bolts. They are roughly $65 USD. Ensure you clearance both piston pin bores and rod pin bores prior to assembly. Being a floating pin design on all forged pistons to include the stock rods, the clearance factor plays a huge role in eliminating galling and binding inside the pin bores.

If you are wanting to possibly up the power at a later date I would certainly buy ahead of schedule now vs having to redo the assembly again later on.

I typically use Wiseco and CP for all of my engine builds. CP pistons are heavier and have a beefier side wall design. Though Wiseco has the tallest top ring land out of any piston on the market. So its a toss up as to where you want your money to go on pistons. If it were up to me I'd go with CP but they aren't for everyones budget. I sell CP pisons for $775 and Wisecos for $595. The price difference isnt that much but I do understand where budget comes into play where funds can be moved around for other parts for a build. A substitute for Eagle rods is SCAT of which are the same forgings just with a slightly different machining process done. Same quality rod but cheaper than the Eagle counter part.

Good luck with the build.

 

I have been running wiseco/eagle combo since my rebuild 1600kms ago, its noisier when you up it to 5000rpm+ compared to stock but other than that its no different. I havnt gone past 5500 rpm on my engine yet cause need bigger injectors so can't give more feedback in that regard.

Make sure you get a quote from vuk@ams, i got all my parts for my build from him and got a good deal.

Cheers,

Adam

 

Just get the supplier to double check the pistons rings supplied by Wiseco are the correct ones. I know of two cases very recently where the rings have been wrong.

1st case my own Wiseco 88mm piston kit contained one set of 80mm rings labelled as that.

2nd case a set of rings were supplied labelled as 88mm but four or five bags contained 85mm rings (or similar, I can't recall the exact size).

Better to ask for them to check before sending half way around the world & then you find they are wrong

 

Yep, was soooo pissed off when I discovered 4 out the 6 sets were wrong ... labeled correctly, but wrong.
Coz was really good, sent replacements out straight away.
I am sure he wouldn't mind double checking the correct ones are included with your pistons.

 

I've read about the offset pin design, and this feature is supposed to make it a quieter combo, I'm concerned about having a noisy engine, I want the quietest pistons available that will handle 500hp.

Thanks for the tip about Scat rods, I've heard of them but never seen advertised for a zed engine. I'll look into it.

 

I've been through wiseco website and they say some of their pistons are high silicone 4032 alloy, and some are low silicone 2618 alloy. I've emailed them to confirm what they're VG30DETT pistons are made from, I'll post here to confirm.

 

Well I received a reply from Wiseco and they have said that their VG30DETT pistons are made from 2618 alloy, which is the low silicone variant and is inherantly noisy, as they require a bigger piston to bore clearance.

The info on their website states that all pistons used in the higher performance & blown engines (boosted) are made from 2618 because its stronger, so that makes sense, but I don't need a set of pistons that can handle 800hp, I only want a set to handle 500hp, which is apparantly out of the range of stockies.

So now I'm trying to find a set of pistons which are made from 4032 alloy, to minimise noise.

Anyone know of hypereutectic cast or forged piston for VG30DETT? they would prob be strong enough for what I want.

 

I stand corrected ..

wisecos are low silicone .

ACL
ARIAS
JUN
GREDDY
all are .

JWT had high silicone but no longer available

 

Hey guys, reviving a really old thread (my thread), but I ordered my Wiseco pistons back in early 2013, so had them sitting here for 2 years, and only just went to fit them a couple of weeks ago, and guess what??? Even though the box said 88.5mm rings, they only measured to about 85mm. So Wiseco are sending me replacements.

I was amazed to have a look at this old thread and someone else said back in the day that the exact same thing happened to them, and another guy they knew. Must have been a batch problem, or a dyslexic packing guy.

Other than that, beautiful pistons, shame to hid them away in an engine, and yes 4032 alloy, which is the type I wanted for quieter operation.

Always check your ring end gaps!!

 

The thing is man, the noise issue is ONLY and issue at cold.
Its an expansion rate issue related to forged pistons and they "rock" over at TDC and clack.

When the pistons and bores up up at ordinary running temps, the piston/bore clearances are much the same as stock and they quieten right down.

Its really as sinister as that!!!!!!

E

 

Hi...I have been running wiseco 88mm pistons and eagle rods and have completed 1600kms and did the hard run in method and to be honest the motor is quiet when cold and hot, just like my previous stock rebuild on my first motor.
I was expecting what tassuperkart stated as thats what generally happens but I am very happy its always quiet. Maybe things will change down the line.

 

This, at cold my engine is noisy, by operating temp (3-5mins) it's usualy quietened significantly

 

I run acl pistons and scat rods. No noise to report over 25000ks. Pity acl shutup shop. They're a great piston