hi all , im gettin exited as my 02 wrx is nearly ready for the re-build "finally"
and would like some advice about con rods and pistons ?
my car is expected to make between 330-350 bhp
i do not hav the budget for forged sadly , but would it be a wise choice to go for sti pistons and rods ? crank? also what boost pressure can the vf34 turbo make ? i would like to buy the pistons brand new really , anyone know a company that sells them ? thanks and sorry for all the questions lol

 

OEM new will be silly money, buy any forged item. Your ecu can only handle around 1.45 bar, after that you'll need a boost controller or ecu swap. Turbo will make 1.6-1.7 bar easily.

dunx

 

do u think standard pistons are up for the job ? if serviced and looked after ?

 

Hi there personally i would go for forged pistons and rods combo,with this combo you will be safe and don't cost to much







Jura

 

300 odd BHP is OK for STi items I'm running that (and more) on Stock Bug WRX items, personally I'd ask paul at finch motorsport if he's got anything hanging around which is cheap and would do. Your DENSO ECU should be able to handle the VF34 Ok as well without going aftermarket or needing something like an AVCR unless you are desparate for in gear boost control.

Bug WRX suspension, drivetrain and brakes are nearing the limit as well

Shaun

(Bug 2002 WRX )

 

I have some rods off of my 07 STI you can have cheap if your interested, think there are the same length as the 2lt ???

Dave

 

sorry jura , wot pistons mate ? lol are they called " forget " or typing error ?

 

Hi matey sorry i mean Forged(typing error)


Here is one combo
http://cgi.ebay.co.uk/Subaru-Impreza...4#ht_973wt_905

or you can go for Wossner Pistons/Wiseco Pistons are also good,but from some reports says noisy too.
For Rods these are good(for around 500bhp) EAGLE ESP 3D STEEL
http://cgi.ebay.co.uk/SUBARU-EAGLE-C...#ht_1063wt_905


Jura

 

cheers for that mate
will i need bearings for those rods aswell ? and cosmetic gaskets ! whoa big dollar this car better be worth it

 

Yes you will need Big end bearing and Main End bearing set,i would recommend ACL are good and mostly used.
Cometic HG set will cost around £100-£130


Jura

 

what bhp is ur bug running at the moment mate ? i really cant afford those pistons fella im gonna hav to see if tfs racing can help me out wiv some options there ?

 

Hi matey you can go with standard internals up to 400BHP without the doubt,bod from SurreyScoobies running 400bhp on standard internals.

My bug was run around 350bhp,but i've get piston ring failure and now i go for 2.1 stroker...
Ask TFS for options,but TFS now have for £3k 2.1 stroker kit option........



Jura

 

Mine are at >400 bhp OEM STI

dunx

P.S. Look at a sourcing a new oil pump + modine + cam tensioners... at least !

 

Why not just buy Banny's Sti short motor for £900, stick on all your Bug WRX bits and mods.......... Sorted

Shaun

 

really ! is tfs stroker kit 3000 supplied and fitted ? but then my turbo (vf34) and gearbox aint up for the job thing is i know 350 bhp isnt gonna satisfy me for long ! id luv to just save and save, then stroker,helico gears ,lateral turbo get it past that 400 mark eh ? now that would satisfy

 

banny??? sounds a good shout mate is that recon ? second hand ?

 

Is much better option like OE recon/rebuild,and is supplied and fitted for this price,but ask Stew.
At this point run just VF34 and if you money allow you can go for bigger turbo etc.,but until you have saved money run VF34 on 2.1 stroker.



Jura

 

its given me somethin to think about
ill hav a chat wiv stew see wot he thinks is best for me ? cheers jura

 

Really don't know how much will cost rebuild,but if cost similar money go for 2.1 stroker.



Jura

 

oops........looks like Banny's engine sold to fud I think

https://www.scoobynet.com/private-fo...e-bargain.html

Shaun

 

http://www.finchmotorsport.co.uk/page.php?a=3&s=69&p=69

2.0 litre STi SCDB above, should be able to build it fairly cheaply.


Shaun

 

Thanks Shaun, still for sale

 

i think he quoted me £2,400 if i remember correctly ? that was about 7 months ago wen he diagnosed it as piston ring failure ! so about 600 cheaper i might keep it a year or so and move on !quite fancy a big power rwd next ? supra turbo , r33 gtst ?or maybe a classic sti

 

cheers for the links fella ill be sure to keep these in mind , just need to make a choice on what road to go down ??