harry007

Is this spec any good?

Apexi power fc + boost controller
full decat + headers
fpr + walbro + 550cc injectors
FMIC
TDO5 20g
oil catch can

Brakes and suspension has been taken care of + gearbox/clutch.

What I was wondering, do I need a uprated/modified oil pump? and oil cooler?

car 93 wrx. Do I need to anything else to the engine spec? besides samcos?

Any Advice is much appreciated.

SPEN555

What about Induction?

Also consider the uppipe to turbo, porting OEM headers gives good results.

For the age of car it might be piece of mind to change the oil pump.

A good person to talk to sort you on this is Harvey. He is based in Darlington and would be able to sort you on the headers, uppipe and give very good advise so you don't waste money.

HTH.

harry007

cheers for the reply. The car already has some sort of apexi headers, complete with a apexi titanium exhaust system & Apexi induction kit. I thought an up pipe mod was only for newage cars?

The cars only done 40k.

Hol

iTrader: (1)

Mapped correctly, that will get you 380bhp at the top end on Optimax. Closer to 400, if you are also using octane booster.

But, it will be a little laggy with the 20g, as it is quite a big turbo.

As stated above, you will need some sort of cone filter, especially if you are fitting FMIC pipework.

RoRu

I may be wrong, but i think you my struggle to make those number with your heads/cams and lower rev limiter.

Had a similar setup on my STi 4 and made 383 @ 1.49 bar and 7200 rpm on BP ultimate.

The modified oil pump is a good idea just for peace of mind.

And unless you track you car alot the oil cooler is not worth while IMO, cheaper to get a good oil temp gauge, I never saw my oil temp over 105 degrees on track.

I personally wouldn't waste my money on Samco hoses, unless you just like the look of them of coarse.

charlesk

Another option on the turbo front is the MD321H. More expensive than a 20G but it certainly worth the money IMHO, due to far superior spoolup/midrange + the extra airflow capacity.
On my STi it pulls strongly from 3500 right up to the 8000 rpm redline... Speak to Mark @ Lateral about it and any other options.

harry007

so then.......... what would it take to get to 400bhp?

RoRu

Like i said i maybe wrong, Other wise you'll need a set of STi heads probably cheaper than modifying yours.

Or drop your power goal slightly, what sort of power are you running now?

A good idea would be to drop one of the tuners a pm and ask their opinion

charlesk

That's good advice. Either pm them or give them a bell. You'll find that most are quite friendly and will answer any questions.
STi's are easier to extract power from but do not know what an early wrx can realisticly achieve.

GazJenno

lol, your power goal started at 300BHP, then 330 was mentioned then 350, 380 and now 400!? That old engines gonna be hit pretty hard when you finally get it lol.

Gaz

VAL113R

I can confirm you'll not reach that figure with those mods.

I've got a 93 wrx running the below mods. My car was dyno'd at 329.5bhp and 305 lbft

Walbro 255 Fuel Pump
Nismo 550cc Injectors
Custom Exhaust From Turbo Back Titanium Back Box
XS Power Stainles Headers & Up Pipe
Hybrid Front Mount Intercooler
Blitz Induction Kit
TD05 18g With Samco 90 degree hose
Apexi Power FC
Apexi AVCR
SX Fuel Regulator
Helix Catch Can

Floyd

iTrader: (9)

A good spec there Mr Vallium and an honest figure although a bit lower than average.

F

highlandwrx

Thats more or less the same spec as what im building apart from the 18g, im just using the 16g TD05. Who mapped the ecu? Im going to andyforrest who rekons 340bhp is achieveble with the 16g. i take it that figures are at the flywheel?

cheers

VAL113R

The apexi was mapped by Andy F he thought I would have reached 350 or 360 with that spec but was rolling roaded at Star Performance in fife last year. I think the torque is quite high, but was dissapointed with the bhp figure.

The head gasked has just gone on the car so the engine is out at the moment. I've got a lightened flywheel and new clutch to go in along with ARP bolts and a few other bits. I am also thinking about lightened pulleys, parallel fuel mod and changing the headers for a set of harvey's ported ones. I would then get Andy to remap the car and see if we can get a bit more power out of it.

The figure quoted it at the fly, I think the figure at the wheels was 240bhp. To be honest I wish I'd bought an sti in the first place.

cheers

VAL113R

for those interested here is the full spec of the car



Walbro 255 Fuel Pump
Nismo 550cc Injectors
Custom Exhaust From Turbo Back Titanium Back Box
XS Power Stainles Headers & Up Pipe
Hybrid Front Mount Intercooler
Blitz Induction Kit
TD05 18g With Samco 90 degree hose
Apexi Power FC
Apexi AVCR
Datalogit Kit
4 Coil packs
4 NGK PFR7B Plugs
SX Fuel Regulator
Helix Catch Can
New Radiator

Full Respray
Face Lift Sport Bonnet
Sti 5 High Level Spoiler
Aero Splash Guards
Delocked Boot
Face Lift Grille
Face Lift Front Bumper
Face Lift Rear Bumper
Face Lift Crystal Side Lights
Face Lift Crystal Head Lights
Face Lift Crystal Fog Lights
Crystal Side Repeaters
Crystal Front Repeaters
P1 Style Front Splitter

Fox 18" Alloys Repainted In Gloss White
Falken FK451 225/35/18"
Subaru 4 Pot Brakes
New P1 Pads
New Rear Discs
EBC Red Stuff Rear Pads
Whiteline Rear Drop Links
Whiteline Rear Adjustable Anti Roll Bar
Apexi Carbon Fibre Front Strut Brace

Sti 555 Limited Edition Front/Rear Seats
Nomad Racing Indiglo AFR Guage
Nomad Racing Indiglo Boost Guage
Nomad Racing Inidglo Oil Temperature Guage
White Dial Kit
Kenwood KDC-W7031 Stereo
Kenwood AMP
Kenwood 12" Sub
Infiniti Front Components
Infiniti Rear Components
Custom Boot Install
M1-ATX 90W Intelligent Car PSU
VIA EPIA ME6000 LVDS Motherboard
Gain 7" In Dash LCD Monitor VGA/Touchscreen
10GB 2.5" Hard Drive
Windows XP Genuine Licence

Jay m A

iTrader: (2)

Do you have any engine bay pics?

midnite_impreza8

iTrader: (16)

very nice car love it i bet its nice inside 2.Goodluck with ya remapp

VAL113R

I do yeah, they're not hosted at the moment. I'll try and upload them somewhere to put them up

VAL113R

harry007

something is seriously wrong there.... 329bhp, more can be made by a td05 16g

'that doesnt confirm anything'

harry007

tell me about it help me stop just can resist thinking that engine has more potential.

PICKLE

Wrap the headers, and re-fit the heat sheild over the turbo, and it might help to push the figures up a little!!

You'd be amazed how hot that lot is gonna get under the bonnet when driving on boost in the summer!!

Wrapped headers will also help keep oil/water temps down due to the closeness of them to the sump/radiator etc...


Oh and Ps..................... For 400bhp on a classic Impreza, fit either the RCM Hybrid turbo or the MD321H from Lateral Performance. I witnessed 3x cars make 400bhp on rollers last weekend and 2x had the RCM turbo, and 1x had the MD321H. They do exactly what it says on the tin

harry007

but so does andy f's td05 20g make 400bhp? he made 440bhp on his ra with methanol...

PICKLE

You have to try Very Hard to crack 400bhp with one though. Funny fuels, relatively high boost etc... even then it seems to be only possible by a select few

I am just stating that if you want to crack 400bhp with just bolt ons, then go for the 2x alternatives above. They will do exactly that, without running funny fuel mix's and high boost.

3x P1's last weekend with standard motors and bolt-ons cracked 400 at no more than 1.4bar boost.

Aztec Performance Ltd

iTrader: (234)

Whats the current spec/output?

Personally I would think twice before trying to get 400bhp out of a 14yr old wrx engine.

harry007

I think I might stick with the td05 18g, less laggier and I wont be running the engine to its very limit. 370bhp-380bhp ought to do it on optimax 99ron.

Aztec Performance Ltd

iTrader: (234)

Whats the current spec/output?

Personally I would think twice before trying to get 370-380bhp out of a 14yr old wrx engine.

harry007

The cars not even hear yet just doing my homework, this is what I've bought.

Car Details : SUBARU WRX 5, 1993

It'll be my weekend stripped down toy.

Andy.F

Harry emailed me to ask if I could make comment on his thread.

It is always difficult to predict the exact power output on a particular turbo, thats why I usually quote a 'typical' band. Production tolerances and build detail differences are such that two apparently identical cars can differ some 30-40bhp in output. Add to that the differences in rolling roads up and down the country and the results variation can be considerable.

Bob'5, your car was at the upper of that scale, despite showing only 340bhp on the rollers, it is probably the fastest accelerating std internals 2.0 UK car in the country (quicker than the 400bhp cars mentioned above) With similar mods however the VAL113R car was at the other end of the scale.

Race fuel and octane boosting additives can also make a big difference which is why in my email last week to Harry I stated "The 20G will not normally make more than 400bhp unless you run race fuel or a methanol mix."

The 18 or 20G work fine on a std internals 2.0, the weak point on the pre 99 cars being the composite head gaskets. The steel shim gaskets of the later cars don't have this issue.

Just to show the other extreme when it comes to rolling road runs, here is a power run from an 18G on a similar spec std internals Sti3 recently mapped. 409bhp 360lbft

banny sti

iTrader: (68)

Andy that is wrong, Rally's car has a built bottom end and is running 1.8 bar boost to get them figures.

Banny