Broke A Piston Wrist Pin.

[DSMReviver]

kelton, I hope you get her fix up. What is your power goal now

 

[keltalon]

The pin info would have been useful when I ordered mine bro. Dustin didnt mention a wrist pin option..

He didn't mention it to me either. I call cp after the pistons was ordered and ask them do they have a upgraded pin for their pistons. I called dustin back and told him the part number that cp gave to me and he told me that it would cost 65.00 more dollars and I paid it. You can upgrade your pins anytime before you put the engine together. No biggie

 

[keltalon]

kelton, I hope you get her fix up. What is your power goal now

I am shooting for 700HP to the wheels! Did I say that? Daggummitt it slipped out ,I have some big shoes to fill now

 

[keltalon]

huh? Thought the 3g lifters were supposed to fix that problem.


Kel I have a spare 1g head laying around. Has bad valve guides. Was thinking of junking it but may try and revive it. Not sure what it would cost to replace the valve guides. Was told it could get pricey since they are press fit in.

One more question. You said you gasket match the intake runners but not the exhaust? So the exhaust side basically just gets opened up internally but the outer part where it mates with the exhaust mani and gasket stay the same correct?

I've been looking at a few kits from eastwood also. Are these kits in the same ballpark as to what you use to port your heads?
Engine Porting Kit
Cylinder Porting and Finishing Kit

Yeah those kits will work. I will post a video of some other HOMEMADE items you will need.

 

[chadillac2820]

I am shooting for 700HP to the wheels! Did I say that? Daggummitt it slipped out ,I have some big shoes to fill now

Think you should make a record attempt with the cyclone manifold first.

 

[keltalon]

Think you should make a record attempt with the cyclone manifold first.

I thought about it.

 

[DSMReviver]

I am shooting for 700HP to the wheels! Did I say that? Daggummitt it slipped out ,I have some big shoes to fill now

At that power level, its gonna be insane bro! Keep us updated!

 

[keltalon]

huh? Thought the 3g lifters were supposed to fix that problem.


Kel I have a spare 1g head laying around. Has bad valve guides. Was thinking of junking it but may try and revive it. Not sure what it would cost to replace the valve guides. Was told it could get pricey since they are press fit in.

One more question. You said you gasket match the intake runners but not the exhaust? So the exhaust side basically just gets opened up internally but the outer part where it mates with the exhaust mani and gasket stay the same correct?

I've been looking at a few kits from eastwood also. Are these kits in the same ballpark as to what you use to port your heads?
Engine Porting Kit
Cylinder Porting and Finishing Kit

You don't want to change shape of exhaust port as this may effect the air flow and hurt turbo spool. There are a couple bumps in the exhaust ports that you can ease a little to help flow but nothing beyond that.

 

[keltalon]

At that power level, its gonna be insane bro! Keep us updated!

Man I love the rush

 

[jmartinez1228]

You don't want to change shape if exhaust port as this may effect the air flow and hurt turbo spool. There are a couple bumps in the exhaust ports that you can ease a little to help flow but nothing beyond that.

Thanks for clarifying that. I was under the impression you blow all that shit wide open Now it all seems so simple.

Also I was talking to a friend who is building his bottom end using wiseco hd's. He said his came with a small wrist pin like your, and found there was an upgrade to a 22mm wrist pin.

 

[keltalon]

Thanks for clarifying that. I was under the impression you blow all that shit wide open Now it all seems so simple.

Also a buddy of mine mentioned that the wiseco hd pistons have the same wrist pin upgrade. He showed me both the original pin and the upgrade and they both look like yours (broken,new).
He was not aware of this upgrade until someone gave him the heads up after he ordered his pistons.
That pin is beefy as hell.

Yeah that bad boy should hold some serious power!

 

[keltalon]

huh? Thought the 3g lifters were supposed to fix that problem.


Kel I have a spare 1g head laying around. Has bad valve guides. Was thinking of junking it but may try and revive it. Not sure what it would cost to replace the valve guides. Was told it could get pricey since they are press fit in.

One more question. You said you gasket match the intake runners but not the exhaust? So the exhaust side basically just gets opened up internally but the outer part where it mates with the exhaust mani and gasket stay the same correct?

I've been looking at a few kits from eastwood also. Are these kits in the same ballpark as to what you use to port your heads?
Engine Porting Kit
Cylinder Porting and Finishing Kit

Hey here's a video that I think will help you out so you can understand the idea of portwork. A must watch!!! <iframe width="853" height="480" src="http://www.youtube.com/embed/7cXoxvkDOHE" frameborder="0" allowfullscreen></iframe>

 

[keltalon]

Okay I will not be going back with the eagle rods hp concerns. Here is what I will be using Manley 14413-4 - Manley Pro Series I-Beam Connecting Rods - Mobile SummitRacing.com

 

[jmartinez1228]

That video definitely put me where I need to be. A little more clear about the bowls and how important it is to make sure everything stays the same in each cylinder.

Nice set of rods to go with. I have a set of eagle h beam and crower (not bc) i beams here that I have been researching on to see which ones to keep. Guess the eagles are going byebye.

 

[keltalon]

That video definitely put me where I need to be. A little more clear about the bowls and how important it is to make sure everything stays the same in each cylinder.

Nice set of rods to go with. I have a set of eagle h beam and crower (not bc) i beams here that I have been researching on to see which ones to keep. Guess the eagles are going byebye.

Yeah those crower I-beams are on par with the manleys that I purchased.

 

[bastarddsm]

I think you had a tuning issue that caused this.

 

[keltalon]

I think you had a tuning issue that caused this.

According to cp after inspecting the pin and sending me a new set of custom pistons, the pin broke from meatal fatigue. They even said that it is possible that the pin may have had small cracks in it from production because it broke in Y configuration. And you know what I agree. I had to send them all my pistons and pins for inspection. I guess they also wanted to see what shape the pistons was in before accepting responsibility. I was fortunate because they plainly states that there is no warranty for their pistons

 

[YZFR1]

Ostar Motorsports made 670+ hp on their stock block motor while also making low 9 second passes with it. If these CP pistons are weaker than oem ones that's just a shame WTF

 

[bastarddsm]

According to cp after inspecting the pin and sending me a new set of custom pistons, the pin broke from meatal fatigue. They even said that it is possible that the pin may have had small cracks in it from production because it broke in Y configuration. And you know what I agree. I had to send them all my pistons and pins for inspection. I guess they also wanted to see what shape the pistons was in before accepting responsibility. I was fortunate because they plainly states that there is no warranty for their pistons

I'd still be rethinking how you do things. You seem to break a lot of shit for ho-hum results on larger turbo's.

 

[JacksonAuto]

That's why we don't use CP pistons in boosted engines, they're just not tough enough. They made a name for themselves building pistons for super stock and stock eliminator engines- all N/A applications where lighter is better. Never had a broken pin in an engine running Wisecos. But like Keltalon said, this scenario was a defective pin and CP stood behind it.

 

[keltalon]

That's why we don't use CP pistons in boosted engines, they're just not tough enough. They made a name for themselves building pistons for super stock and stock eliminator engines- all N/A applications where lighter is better. Never had a broken pin in an engine running Wisecos. But like Keltalon said, this scenario was a defective pin and CP stood behind it.

Yeah in my custom set I had them to drop the top ringland down some. compared to competitors they were imo too close to the top.

 

[keltalon]

I'd still be rethinking how you do things. You seem to break a lot of shit for ho-hum results on larger turbo's.

You happy with your set up? Then that's all that matter because I love mine. Thanks for the daily chukkle though

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She pretty ain't she not to mention bad to the bone!

 

[JacksonAuto]

Yeah in my custom set I had them to drop the top ringland down some. compared to competitors they were imo too close to the top.

Yeah that's a good start. Other things we didn't like were thin spots in the crown, skirt design stunk, too much milling of the pin bosses, no pin oilers, etc. Just too light. Maybe they've changed some things recently but you don't see them in a whole lot of fast turbo cars. That says it all.

 

[keltalon]

That's why we don't use CP pistons in boosted engines, they're just not tough enough. They made a name for themselves building pistons for super stock and stock eliminator engines- all N/A applications where lighter is better. Never had a broken pin in an engine running Wisecos. But like Keltalon said, this scenario was a defective pin and CP stood behind it.

The pistons looks superb it was only the pin that failed. I personally think they are the way to go in custom configuration and I have use them all on various race projects of mine.

 

[keltalon]

Ostar Motorsports made 670+ hp on their stock block motor while also making low 9 second passes with it. If these CP pistons are weaker than oem ones that's just a shame WTF

Here is a fact of life you make horsepower you will break something. Some unlike me will not post everytime they do break something, Believe the hype if you want that's your right. My engine has held together for almost two years of straight abuse, because when I get in the car its all about kicking butt now and taking names later from mustange to new camaros to Zr1s to motocyles you name it. I have seen a lot of shocked faces in these good ole dsm days and I love it. Infact this is the biggest motivation for me to stay in the game despite some down time I like to hurt feelings on the street if you know what i mean !