Why does everyone hate on wiseco?

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5/16/2017 3:20 PM

Why does everyone hate on wiseco? I have had no problems with their products, is there something I should know? Only other thing I have ran is vertex and the wiseco seems to be more durable?

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5/16/2017 3:22 PM
Edited Date/Time: 5/16/2017 3:23 PM

seizeco...err i mean Wiseco has had some QA problems in the past. There is a reason Vertex is oem for KTM and a few others. I can't think of any manufacturer that uses wiseco as oem.

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5/16/2017 3:23 PM

Why not just stick with OEM and retain your piece of mind?

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5/16/2017 3:31 PM

Wiseco in two strokes only for me. Have to set them up properly and allow the engine to warm up before baring on them. Forged pistons have a slower expansion rate.

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Tomac and/or Anderson for 2020.....

5/16/2017 3:35 PM

I'm just going to wait for the pictures to drop on this...

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5/16/2017 3:36 PM

Charper732 wrote:

seizeco...err i mean Wiseco has had some QA problems in the past. There is a reason Vertex is oem for KTM and a few others. I can't think of any manufacturer that uses wiseco as oem.

None of the OEMS use any forged pistons to my knowledge.

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5/16/2017 3:38 PM

I've always used wiseco and never had a single issue

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2011 Yamaha YZ 250 -MX
1996 Yamaha Banshee 350 -Trails
1982 Chevy S10
2005 Pontiac GTO -451rwhp

5/16/2017 3:49 PM

OEMs use cast pistons simply because they are cheaper

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5/16/2017 3:50 PM

more like UNwiseco bro

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5/16/2017 3:54 PM

A few years back they had some problems. Don't know about more recent stuff, but in 2010 I worked at a shop and the owner always used Wiseco pistons in his kids bikes. He put three brand new Wiseco pistons in his kids 85 and all three pistons broke within 3 hours. After that he went back to oem and never had another problem. Chances are that it was a bad batch, but we had some customers that had the same issue over a 4 month period

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

5/16/2017 3:55 PM

Photo

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5/16/2017 3:56 PM

We run them in our RD400 racebike, never had a problem AFAIK

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5/16/2017 4:03 PM

I've run lots of wiseco piston and clutches and they've been really good

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5/16/2017 4:29 PM

Yamaknockers wrote:

OEMs use cast pistons simply because they are cheaper

KTM uses forged pistons from CP in the 16+ 250f.

The wiseco racers choice pistons worked well in my previous bikes. No issues on multiple machines. I wouldn't use one of the crankshafts if it were free though.

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5/16/2017 4:30 PM

They are good in 2 stroke ktms. Not so good in the yz250 from what ive heard, but those are a little tougher to jet correctly with an aftermarket exhaust, so that could be why. I wouldnt run their cranks/rods though

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5/16/2017 4:40 PM

I've run Wiseco pistons in YZ 250 two strokes for years without any issue. The rings in the kit are usually too tight and I have to open up the gap,a little. I go up to 50 hours on them which is what they recommend. No question forged pistons are stronger than cast.

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5/16/2017 4:48 PM

Wisecos are forged and need a 1,000th or 1.5 thousands more clearance and warmed up good otherwise they can and will cold seize or get tight.

They will last 3 times that of a cast OEM (ART) normally in a bike known to blow piston skirts.

I don't remember what clearance we ran the end gap at.

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5/16/2017 4:53 PM

I have used Wiseco pistons for every rebuild on every bike I've owned since the mid 90's with zero issues. Heard plenty of war stories though

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Racing motocross since 1996

5/16/2017 4:57 PM

137 hours (very hard hours) on my KTM300 OEM piston, don't think i'll be buying anything but OEM bro

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5/16/2017 5:13 PM

I'd rather wear out more pistons and less cylinders

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5/16/2017 5:16 PM

On my current YZ250, I am running my 2nd Wiseco piston and have had no issues at all. The only piston I had a problem with was the original oem piston. The first time I took the top end apart I found one of the little tiny pins that keeps the rings from rotating had broken off through the top of the piston.

That said, I won't be running anything else they make. Heard too many horror stories.

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5/16/2017 5:52 PM

Nearly always use Wiseco and have never had an issue.

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www.bettercallsaul.com
Die Antwoord

5/16/2017 8:10 PM

Only issues I have ever heard of are cold seizures and that is purely operator error and not taking the time to warm up. I have always used Wiseco since the late 80s and never ever ever ever had an issue.... ever!

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Don’t piss off the old people - the older they get the less “life in prison” is a deterrent for them!

2020.5 KTM 450 SXF FE
2006 KX250

5/16/2017 8:27 PM

mattyhamz2 wrote:

A few years back they had some problems. Don't know about more recent stuff, but in 2010 I worked at a shop and the owner always used Wiseco pistons in his kids bikes. He put three brand new Wiseco pistons in his kids 85 and all three pistons broke within 3 hours. After that he went back to oem and never had another problem. Chances are that it was a bad batch, but we had some customers that had the same issue over a 4 month period

That sounds like a setup issue. Forged pistons rarely, and I mean very rarely, break piston skirts (two strokes obviously). I have a literal shelf full of old two stroke pistons, 95% of which are Wiseco....and the select few with broken skirts are cast...

I believe most four stroke OEM pistons are forged now-a-days.

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Tomac and/or Anderson for 2020.....