right my question is ive seen a upgrade kit on the bay which is a compressor wheel and housing for a 18g,would it be poss just to swap my 16g wheel n housing to this and get a 18g??? http://cgi.ebay.co.uk/2-25-Turbochar...item563c104d48

 

No real point in changing from a 16g to an 18g tbh, also it does depend on your car, and you will need your car remapped.

Tony

 

its a version 1 wrx.ive had it remapped, ive got a simtek, fmic,550's,induction,walbro n parallel fuel set-up with fpr. wanted a bit more boost.....

 

Are you running a built engine (forged internals)??

 

no standard engine.

 

Well thats your gearbox, clutch and engine all on the edge with the 16g, and you want to go bigger?
Of course you can upgrade all the above, cost you about 7k but its better than seeing your piston on the outside of the engine when the rod lets go (or the gearbox shearing the cogs )

Tony

 

i know what your saying. ive got a 99 uk box and new 230mm clutch,its just the engine internals side. a friend ran his 93 at 400 for 2 years on standard internals.

 

my friends spec.
Spec as below

EXTERIOR,
CARBON FIBRE REAR SPOILER,
CARBON MIRRORS,
PRO WIPER BLADES,
SMOKED REAR CLUSTERS,
CARBON REVERSE SCOOP.
ALLOY BONNETT,
V5 FACELIFT.
FULL BODY RESPRAY.

INTERIOR,
CUSTOM DASH,
REVOLUTION SEATS,
HARNESSES,
LEATHER GATER,
AIR/FUEL GAUGE,
DEFI BOOST GAUGE,
VOLT METER,
DEFI OIL TEMP,
DEFI OIL PRESSURE,
DEFI WATER TEMP,
DEFI FUEL PRESSURE,
RICHMOND WHITE DIALS,
RIPSPEED PEDALS,
MOMO STEERING WHEEL

ENGINE AND OTHER,
HKS FRONT MOUNT INTERCOOLER,
RCM OIL CATCH TANK,
MOCAL OIL COOLER,
RCM 550CC INJECTORS,
OD18 TURBO,
FUEL PRESSURE REG,
RCM HEADERS WRAPPED,
DOWNPIPE WRAPPED,
NGK IRIDIUM PLUGS,
RCM 3" TO 4" SS FULL SYSTEM,
RCM LIGHTWEIGHT PULLEYS,
K&N INDUCTION KIT,
SIMTEK ECU WITH ANTI LAG AND LAUNCH CONTROL,
WHITELINE BUSHES THROUGH OUT,
WHITELINE ANTI ROLL BARS,
4 POT CALLIPERS,
UPRATED PADS,
TOYO R888S
SLAM PANEL.
Sound deadening removed and re-painted.

POWER FIGS 395bhp & 334flb

WORK DONE BY TILEY DEVELOPMENTS WHO ARE A GREAT BUNCH!

 

Trust me, your running on borrowed time 400bhp on a standard classic engine is suicide when (and its when and not if) it lets go then its a new engine as piston out of block time
Play it safe as you find your MY99 gearbox isnt exactly strong either, these engines can spit their dummy's out well under 350bhp, 350bhp is seen as the top end of reliability, your option though, either that or a big bill tbh

Tony

 

thanks tony.great advice...right whos got a forged engine for me then

 

just like that then. god i have to laugh.

 

????????????

 

if you have £7 - 10K lying around for a forged build, with a six speed drive train, fill yer boots lad. most of us have to scrimp and save for our rebuilds.

 

so do i mate.... the forged bit was a joke. im a pmt (poor man tuning)
what i should have said was ill stick wiv what i got till it pops....

 

well take tony's advice and either drive with some mechanical sympathy or be prepared for a big bill. it will happen mate trust me.

 

im no schumacher mate,and its mapped correctly @1.2bar......by dave rowe.

 

i do not doubt that dave rowe mapped it correctly and very safely bu the fact is your running a 212bhp car at 400bhp on standard internals that are 17 years old now and rather tired. your standard 5 speed gearbox, well i am surprised 3rd and 4th have survived this long. you must drive like my granny mate

 

i think you misunderstand mate thats not my spec.its a friends who was running it till it popped. my spec is simtek,fmic,550's,walbro,parallel fuel and fpr. with a 99 uk box mapped @ 1.2 bar. and was wondering if i could change the wheel and housing on my td05 16g for a 18g one...

 

ahh right. gotcha

 

Obvious question, have you given any thought to how you will rebuild the turbo, and get it dynamically balanced afterwards?

Provided you can do all that (or know someone who can), and provided the parts you're using are of good quality there's no technical reason why you couldn't do what you're asking about. However, you would obviously need a map revision, and it's then an open question as to how long your engine and transmission will handle the results.

 

didnt think of all that. thats why i asked i just thought it would be a straight swap.