calling all guys using cp piston what power are you making with standard wrist pins what power have you broken wrist pins i called cp and a guy there told me max 500hp that seemed a little low for aftermarket pistons im trying to get a reliable hp rage for standard wrist pins i also think rev limit plays a role not sure

 

They can't know the answer to that question. Its almost an impractical question to ask. You'll be fine running them over anything the car can handle for any practical amount of power over 600-700whp. You're just going to get a lot of dyno numbers of one pull of people with CPs going over the 500whp limit on this thread. If you're concerned of the matter of longevity, that's based more on the REST of the engine assembly and tune.

 

I have cp's in mine and I was told by mike laskey, my engine builder, the engine is good for over 700. I am not really sure which pins are in there. All I know I paid for pauter rods and cp pistons. I am pushing 500 on the engine its self. hope that helps...

 

ok i have a good tuner and the motor was built by tpr this is the bottem end i guess im asking if this will hold 800hp track only car

ERL 84mm sleeves with ERL 5 point main girdle
CP pistons Calico Coated
Manley turbo tuff rods with ARP rod bolts
ACL race bearings calico coated
OEM LS crank with TPR machine work
5.5 quart Moroso oil pain
ARP head studs

 

ok people who have a season or more on the motor with standard wrist pins

 

Again, you won't find a true answer to this question unfortunately. 1 season or 10 seasons.

 

if your really concerned just upgrade the wrist pins. hell straight from cp the 1000hp+ wrist pins are only $150. you can prolly get them cheaper from a dealer.

 

His motor is built and in the car already, probably wants to know the limit of said motor without having to pull it and rebuild

Personally if a stock wrist pin can hold 500whp then why cant an aftermarket hold more even being a standard pin. IDK about 800 but500-650 it should be alright with a good tune. RPM also plays a role in wrist pin fatigue, there are alot of forces at work when you really start cranking up the revs

 

[QUOTE=Turbo-LS;46147227]His motor is built and in the car already, probably wants to know the limit of said motor without having to pull it and rebuild

i was just about to say that i would have to buy wrist pin, bore it ,rings and bearings

 

I think you're ok.. I know you worry a bit, but I think you're almost splitting hairs here on these "power ratings".

 

lol im just trying to get the most out of it i dont want two passes and then the motor goes i know its a race car and things happen just want some reliablity

 

800whp and 4 cylinders you can throw reliability out the window LOL

 

if the 500hp on there wrist pins is true, damn im gonna be in trouble lol.

 

lol there has to be some didnt miller have like 1300hp and it went thru 3 seasons before it broke

 

lol how much power are u at and how long

 

But he also maintained the engine in between runs. You can't compare a miller car to your "street/strip" driven cars. He runs a team, and has the budget for it, but he still had to maintain it.

 

What does he do between runs to maintain the motor oil changes just trying to get the most out of it

 

He'd do everything from recheck ARP bolts, change rods / pistons right there, (already pre-balanced), to even swapping heads. He has a full team, not just the one person.

 

I think the CP pins should be fine, but what do I know. I've seen guys take their pistons to 900whp without issues with an off-shelf piston. Drag engines.

Again, the pins on your engine may be different, but it is hard to sweat it when you don't really hear of breakage much.

 

yeah im just gonna see what i get with my fuel setup which would be low 600's save up some money and rebuild the motor later on with upgraded wrist pins and go for more power and stop worrying about it lol

 

No point in changing the wrist pins now, or later. You'll be fine.

 

X2 ^^

The only time I've seen the wrist pin needing upgraded, is on 900-1000+hp. I know plenty of people making over 700 with zero issues.

 

ok cool thanks for you help everyone