time has come to look at possibly forging my engine

question is do i forge my 05 sti engine or look at cdb?

also what stroker kit?pistons etc

also what else do i need

will be fitting cosworth hg and belt

 

Slow down there. What is your power target and what is your budget?

 

450/450 ish 5k

 

Do you have an overall budget that you'll stick to? If, so that will help us to advise you on your options...

 

Thwarted!

 

Your std. engine is good for that. So if your block is salvagable, then keep that. Then you can prob. buy one of the many 2.1 stroker kits (which inc. forged pistons/rods that are much stronger than OEM) and get it all fitted. 5k should see you okay for the stroker kit and the labour for the rebuild, by one of the specialists. Just need SC46 Bllet (or similar), supp. mods and remap...

...But I'm guessing out of that 5k, you also budgeted for a FMIC (possibly), turbo, injectors, etc...?!!

 

CURRENT ENGINE IS OK

CURRENT SPEC

SUSPENSION
Bc Coilovers
Whiteline Drop Links
Full SuperPro Bushes
Mintex 1155 Pads
EBC Turbo Grooved Disks
TOYO PROXES T1 SPORTS


ENGINE
SC46
Sard 650cc Injectors
Lateral Performance Headers and Uppipe
Full 3" Afterburner Exhaust
Walbro Fuel Pump
K&N Typhoon Kit
Japspeed FMIC
HKS Dump Valve
3 Port Boost Valve
Apexi Turbo Timer

 

So what power are you making now then?

 

I'm confused - is that your CURRENT spec?

If so, you're surely running c.420+ bhp at the mo, right? So if motor is okay, why go for a forged build now? Wouldn't that be unnecessary at this time?

Or do you simply have a spare 5k burning a hole in your pocket [jealous]?!

 

Making 400 now, looking to get a build ready as gonna have a few track days on current

 

£5k for 50 more horses - **** that!

 

Is your engine healthy or have low compression,are you tried contact any Subaru specialist?

Your limiting problem is turbo,you are running SC46 non billet if you are looking for more power,I would suggest 20G billet should male above this power for good price,SC42 should be good too,but MD321T should be best bet and will make for sure 450bhp




Jura

 

You may need to go to 740 injectors too.

 

Think Jeff he will be OK at 450bhp with 650cc and above that should help FPR


Jura

 

Amm running 440 bhp on my std bug STi with yellow injectors (think 640's). Scooby clinic said £4100 for a 2.1 build.

 

probably get more horses with an aftermarket ecu

 

Ignoring the small amount of top end power you may pick up from a 2.1, I doubt anybody would argue that you certainly pick up torque.
We can re-use your SCDB and turn it into a 2.1 stroker using a variety of piston/ rod combinations.
Drive in drive out starts at £4650 inc vat and offers very good value for money when you weigh up the cost of all of the parts and the extra work we do. You'll get it back clean enough to eat your dinner off too

https://www.scoobynet.com/trader-ann...per-clean.html

 

shiney