Internal mods have begun: pistons

[iso100]

http://instagram.com/p/sulTNKAJa5/

http://www.performanceenginecomponents.com/products/product.asp?id=251397

 

[lessard.dcj]

Super good find.

 

[rooSTer]

Its great to see it but I wonder how many will be doing internals since our stock motors can handle so much more horsepower.

 

[rodmoe]

http://www.sico-developments.co.uk/.../fiesta-mk7-st-pec-rods-and-supertech-pistons

They come with rods if you want but they ain't free
Fiesta MK7 ST PEC rods and supertech pistons
$1,649.41 USD

 

[Cesso]

I want somebody to find where the stock ones fail more than I want aftermarket ones at this point, but I'm glad that they are already developing these parts.

 

[ryst]

I want somebody to find where the stock ones fail more than I want aftermarket ones at this point, but I'm glad that they are already developing these parts.

So far I haven't seen anyone break anything yet. Both engine and drivetrain. There's a bunch of people running their STs at track events on a regular basis, with decent modifications too. I'm almost excited to see what gets broken first.

The biggest problem I've heard of is lack of cooling with the stock radiator, but the fact that the drivetrain and engine has held up is good news for everyone.

 

[-Callum-]

Interesting find, I think that you would have to be running SERIOUS power in order to warrant using these, sitech racing in Scotland are trying to find what will give up first on these cars, iirc they are currently running 377bhp at 2 bar boost, still on standard internals, clutch and gearbox, and their car has been used on numerous track days and 1/4 mile events.

 

[Sourskittle]

Interesting find, I think that you would have to be running SERIOUS power in order to warrant using these, sitech racing in Scotland are trying to find what will give up first on these cars, iirc they are currently running 377bhp at 2 bar boost, still on standard internals, clutch and gearbox, and their car has been used on numerous track days and 1/4 mile events.

What have they run? We are very behind in the states i think

 

[razorlab]

What have they run? We are very behind in the states i think

I wouldn't assume that. ATP was making 300whp plus five months ago and running 12.4@110mph.

 

[Sourskittle]

Yea... I guess if someone bolted on a 60-trim turbo and 50shot they would be "ahead", but its not really the samething.

 

[razorlab]

Yea... I guess if someone bolted on a 60-trim turbo and 50shot they would be "ahead", but its not really the samething.

Hurry up and dyno your frankenstein turbo and get ahead!

 

[Sourskittle]

Lol. I promise, ill never be ahead.

 

[-Callum-]

What have they run? We are very behind in the states i think

It ran 13.88 @111mph, although over here 1/4 mile events aren't that big when compared to the u.s, the car is more setup for the track, high power fwd is notoriously tricky to get a decent launch of the line, I think that is proven by the fairly decent terminal speed, once it gets going it's actually a very quick car!! I believe that was when it was around 315bhp, but not certain, and on 15 inch r888 road legal semi slicks.

Callum

 

[Sourskittle]

The mph is strictly a function of spinning the tires on that run. That's a pretty poor time actually. But I do understand that its not what the car is setup for.

And not like ATP has said anything about how modded their car was (or gutted).

For reference, I ran 12.0@112mph in a fwd car that hooked.

 

[re-rx7]

I'm curious to know what materials the factory pistons and rods are made of.

 

[ryst]

I'm curious to know what materials the factory pistons and rods are made of.

From the ST Supplement manual

 

[re-rx7]

Not forged but the assembly sounds strong. Rods could be weak pt depending on thickness.

 

[totusPorcus]

intersting. but why? once you start added forged pistons and upgraded rods, it implies you are running more power than the current motor can handle. which implies you are adding more fuel that the current system can provide. i would be very interested to know if the folks building out these motors are modifying the fuel deliver system.

also, if i was doing something like this, the first thing i would do, since you're opening up the motor, is see if you can bump it to 2.0l either with custom crank and/or boring out the block (or modifying the block via sleeves) for more displacment. or.... dropping in the ford racing 2.0l that they have available..

or lets get real crazy... siamese two 1.0 3 cylinders to get a flat or v6....

 

[iso100]

Just because you're strengthening the internals doesn't mean you're also running out of fuel...

 

[Sourskittle]

Nitrous = infinite fuel