4piston

I wanted to share this engine build for a good customer of ours, for his SFWD class race car.

This engine will use a 5500cc Kinsler plenum intake manifold, Precision billet 72 turbo, and a Motec M130 ECU

GRP Aluminum rod and Wiseco thick skirt piston with armor plating and tool steel wrist pin will handle the 11,000 rpm and 50+psi boost




The block was sent to Golden Eagle for sleeving and o-ring.


Speedfactory H11 head studs are used to keep a solid seal on the Cosworth head gasket.


4 Piston Pro 156 cnc cylinder head with oversized seats and 36mm intake valve moves the air into the cylinder 355cfm @ .600 valve lift.


We make our own valve seats from A3 beryllium bar stock. One of several things to help valve life on the exhaust side.




One of the biggest problems in these big power turbo engines is dealing with the exhaust heat and exhaust valve distortion. There is no bullet proof fix to make them last forever at Pro Mod like power levels, but you can drastically extend the life between service intervals if you can manage that heat. It is common to throw 6m and 6.5m valve stems at it, but it does interrupt some exhaust flow. We have found ways to make them last without resorting to the big stem...but honestly some guys are harder on them than others and still need that We use a special high temp alloy for the valve that can handle another 800 degrees on top of a standard Comp Plus or Inconel valve, and they are stronger and lighter than an inconel valve. The A3 beryllium seats and our special exhaust guide helps to pull heat away from the valve as quickly as possible. The cheaper guides can become brittle with the heat and break off...shooting through your $3500 turbo. It actually provides pretty good life with a standard Comp Plus valve as well.


We are using the newer Ferrea RR1004 rocker arm. It has struts on top that provides extra rigidity. With a stiff spring and high lift cam, we have observed that this rocker shows less fatigue over time than the lighter blue RR1002 rockers. Those still have their place, as they allow you to run any cam single lobe or 3 lobe...whereas this one requires a single lobe to clear the rocker. This is a billet Web camshaft.


Always new timing chain components, connected down below to our Ported oil pump to allow for 11k rpm blasts through 4th gear.


Big Kinsler for big horsepower


Thanks for reading

justYncredible

iTrader: (1)

omg! that engine looks delicious

Balor_Gr

Mother of god those pistons look like theyre ready to withstand nuclear reaction.Mnoster setup.Now id like to see THIS engine at the tx2k14 roll race event it would slay some lambos...
May we learn the power target on this engine?

4piston

1300 at the tire

1lowek2007

Lol how do you plan on hooking 1300hp in a FWD? better yet, hooking even 800hp from a 60 roll? Not going to happen. This will be a nasty track car tho.

KevinEF7

Those valve seats and port work made me drool a little. Top notch shlt in here
First timing chain setup Ive seen myself

OneBadTurboCRV

I was just having some wild sex and then my hand fell asleep. Stop posting all this engine **** like you have been. It is making me want to give you a head and a wad of cash... I am feeling very dirty ***** right now.

On a serious note, I love what I have been seeing from you guys as of late. Keep it up.

1lowek2007

Its a k series.... theyre all timing chain.

wantboost

iTrader: (2)

You guys have always done impressive builds.

I was going to have you guys do the outlaw port on my b16 head, I'm assuming that's the only port you offer for b series heads? it's a road race/dd build and I'm tossing in a piston/rod motor to sort out the chassis... I am building a much more radical motor to eventually replace the first one and was going to go with grp or bme aluminum rods. opinions?

you can pm me to avoid cluttering this thread.

thanks

DA-NINE

What is the advantage to running the Cosworth gasket if I may ask.

DC_Legacy

Great Scott..That's 325 HP per each cylinder!!

dcmatt

iTrader: (7)

Its a track car build.........

1lowek2007

Duh... did you even read the post i was replying to? No one builds a 1300hp fwd for roll racing...

dcmatt

iTrader: (7)

My mistake!

4piston

It is a little while out...car is going to be dropped off to be wired soon and the motor is still here in the shop.

Schister66

Amazing setup...in for results

wantboost

iTrader: (2)

I wanna sleep with it

Muckman

iTrader: (2)

As always, I want to know clearances but you never tell me

$MIKE$

iTrader: (13)

Wow somebody dropped some serious coin
I imagine this is for a serious race team

da love

Nice manifold

da love

does 4piston racing own that k series insight?

frost_white_ej1

dammm mother of god! them rods! pure sex right there!

4piston

Its just a high quality gasket that we like to use. The JE gaskets are good as well. Typically we wouldn't use an o-ring, just a flat deck, but this was done at the request of the customer. Cometic is fine also, but their tooling only goes up to 88mm bore, so on the big bore all motor stuff we use Cosworth. This is only 87 bore so any of the above would have worked fine

You and a few others.

Yes Josh and I own that car. I'll sell it to you

snobordboy

Wow that is nice!

If I have any issues with the Comp Plus in my current head as my build progresses, now I know that you have some serious upgrades possible. Now where is that damn drooling smiley?