my silver scoob

Hi im thinking of putting a new intercooler on my car which is a 97 uk turbo wagon i was 1st thinking of putting a front mount on but now im thinking of just upgrading the top mount could anyone tell me which ones are good for an upgrade also will i need to have it mapped cheers

jameswrx

iTrader: (4)

What's your goal? ie other mods going on?

Not much point in going too mad unless you're fitting a bigger turbo and supporting mods.

eggy790

iTrader: (20)

good point, so when should you consider uprating your intercooler?

would my version 6 standard intercooler for example be fine at 340bhp, as i dont plan on going any higher than that until engine goes..

or is it on its limits at this point?

my silver scoob

Hi it will be abit at a time to be honest im thinking intercooler, turbo, re map and see what happens im not aiming for lots of power just that little extra but worth doing in cost cheers

jameswrx

iTrader: (4)

A v6 intercooler is supposedly ok at 340bhp, my car is MY00 turbo and the I was told 350bhp is ok on the stock intercooler.. I'd say therefore your v6 sti intercooler would be ok at 340bhp. The V5/V6 intercooler has better cooling capability than the V3 intercooler the original poster has asked about (there's an article on the net about this) they look similar but the internals of the v5/v6 intercoolers are different from what I've read.

I was considering fitting an sti 8 intercooler but to be honest I'd fit a front mount as it's probably easier and I'm not concerned about a couple of hundred rpm's extra lag.. I'm sure it'd maybe take some more ignition advance with a front mount.

I've never had a front mount on a scoob but I've had a few GTi-R's and when I had one with a front mount conversion it felt so much stronger on WOT and less wooley feeling.

jameswrx

iTrader: (4)

If you're going to do it over time just get the bits together and fit and get it mapped at once. There's no point sticking a bigger intercooler on and driving it for months, then fitting a turbo etc. I'd just keep your eyes peeled on here and get..

Turbo (VF series, or td05 FE)
440cc injectors
power FC (as there's no ecutek for your year ecu)
walbro fuel pump
3 port boost solenoid (or stand alone boost controller such as AVCR)
de-cat system

Stick all the bits on in a weekend and get it mapped

eggy790

iTrader: (20)

cheers, thanks for that answer , very helpful

my silver scoob

Hi thanks for that i will go that route, and when i was talking to my local impreza breakers he was advising me on the vf turbo if i remember rightly somthing about the way the turbo was set honestly i dont no a great deal about turbo's, what would you advise, also what sort of power would i be looking at and am i right in saying mine now standard is 220bhp
thanks

jameswrx

iTrader: (4)

Your car should have the front entry turbo (prob what he mentioned) being a 97. There's loads of turbo's from other imprezas that will directly bolt onto your car, ie VF35, VF28, VF22, Vf23, VF30, VF43 etc. These all vary, some are roller bearing, some aren't some have smaller exhaust housings than others (for quicker spool) etc etc.

If you do the mods I mentioned (personally this time I'd have gone for a front mounted intercooler and AVCR) then you'd be looking at around 300-320bhp and circa 300ftlb of torque on your intercooler I'd guess, add the front mount and (from what I've researched) a solid 330bhp minimum and decent torque (maybe up to 340ftlb on front mount)

my silver scoob

That sounds nice, which turbo would you recomend i go for or does it not matter and thanks again for advice

jameswrx

iTrader: (4)

Vf30, vf35 or vf43 (thinks it 43, could be 34, one of the 2 I'm sure is twin scroll just can't remember which) vf22 is supposedly fragile. Have a search as there's a post somewhere about the various model numbers and what the difference is.

Pete

I,m on standard cooler at thec moment on my V3 and it,s dyno,d @ 329bhp/331ft/lb, i think personally it,s on it,s limits so hence me having a FMIC fitted next week..

weeebell

iTrader: (1)

An STi8 intercooler is a good mod for a classic and will be ok for around 400bhp. It also take little modifications to fit.
As for a turbo, a VF28 from a P1 or STiV5 and supporting mods will give around 310-320bhp with similar torque. Thats more than enough to kill you OE clutch and is about as much as a classic 'box can take safely.

I had a classic running 320/320 with a VF28 and not much could keep up with it. The thing just kept pulling from a standing start till 140 then the boost started to tail off.

Pete

I think the STI8 Tp mounts are a tw*t of a job to fit though Weeebell tbh, but as said, they do a great job for 370-400bhp..

weeebell

iTrader: (1)

I fitted one to my classic and the hardest bit was fitting the intercooler elbow onto the turbo once all the supposed hard bits were done!!

weeebell

iTrader: (1)

http://i173.photobucket.com/albums/w...82007084-1.jpg
http://i173.photobucket.com/albums/w...1082007085.jpg

harvey

iTrader: (48)

FWIW I had an STi 3 Wagon at 335 bhp on standard TMIC, turbo, ECU and injectors. Charge temperatures were shooting off the guage at 70c.
On an STi 6 with a more efficient top mount it is on the limit already at 320 bhp.
The STi 3 Wagon was fitted with an STi 8 top mount but that is about to be replaced with a Hybrid front mount. Cheaper, easier to fit and better results.

James Neill

iTrader: (1)

I have an ARC one on mine. Supposedly an upgraded item compared to original STi 6 one. But not sure if good or bad.

typeRv4

Hyperflow TMIC for your year - 15mins install.
A 2.5 and MD321 did 450hp with one on the scoobyclinic dyno.

my silver scoob

Thanks for replys
and when i do these mods will i be safe with standard clutch and gearbox
also am i right in saying mine is the v4 cheers

eggy790

iTrader: (20)

that looks like a better fit, and you can retain the OEM strut bar aswell!, anyone got any info on how good these are? how much dikd it cost?

also are the hyperflow TMIC a lot easier to fit to a v5/6 than the sti-8 intercooler? and do they come with all neccessary parts? i.e. no need to get elbows and flexi hose sperate ?

cheers

Pete

15 mins?? bloody quick job that..

joz8968

iTrader: (13)

Eggy, I also have v.1/2 pattern ARC to go on to my 1993 WRX, then get a remap tweak.

They are of a bar and plate design (rather than OEM tube and fin) and, I understand, this design is slightly more efficient for cooling (air flow through it/lless of a pressure drop), for any given core size. But how much, not sure?

I also assume the full heatsoak time is no longer than OEM(?) - due to being same size as OEM - so no advantage there, then.

stu_555

all these names and things have confused me .prob cause i know nothing about tunning or mechanics tbh.so would there be any point in fitting a front mount on my 97 import 555 not sure what brake its runin or if its standard.the owner before me has fitted a boost gauge but i dont know if its runin slightly higher boost. but any whay my question is would thee be any advantage to me fitting a front mount to mine? just now im not planing on tuning the car much just helping it with breathing and upgrading the clutch and things. sorry for the big essay lol.

Pete

No point if it,s still around the 280bhp mark, i think they,re ok til you starting passing 300bhp.

Saying that, they aren,t the best design ever BUT as said, top mounts are fitted to some big power classics so personal choice i guess and what you,re happy with.

stu_555

ok cheers may fit one anyway atleast its keeping everything cooled better even if it doesnt need it just now i may change my mind in the future and go for big power

Pete

Always a good idea Stu, can only be good for the car to keep it cooler...

joz8968

iTrader: (13)

Yes. IMHO this would be the main reason why you'd want to do it. A safety thing re. preventing det conditions... BUT... also more power potential with the cooler intake temps. Esp. re. heatsoak issues with the TMIC at traffic lights after a hoon, plus motorway hold-ups, etc... All of which is compounded in high summer (when we get one that is ).

Plus they look cool.

harvey

iTrader: (48)

To correct a misconception above.Bar and plate intercoolers generally, by their design, have a signifigantly largere pressure drop than the tube and fin.

joz8968

iTrader: (13)

Sorry harvey.

Overall, for any given size, do they perform better than tube and fin then, or not? Or is any difference negligible, regardless?