===WRX===

Just had my car back from a diog session, and ive been advised that m y turbo is on its way out.....poo

cant complain though, its done 60k on a single turbo and its still going as we speak, the spec is as follows, so im really looking for some advice as to what i am going to be looking at paying, what i should go for, and maybe where to go.

cheers guys.


The Car Spec is as follows

MY95 WRX
Apexi PowerFC
Apexi AVC-R
Apexi Turbo Timer
HKS Down pipe
HKS De cat and Center Section
HKS Hyiper Backbox
HKS Plugs
HKS Super Metal Flow Induction
HKS SSQV
AP Organic Clutch
Bosch Coil packs
Evo7 Hybrid 280lt Fuel Pump
FSE Fuel Pressure regulatior

Standard Internals.... 1.2bar of boost.

what should i be looking at, dont wanna break the bank, but im not afraid of spending the cash on the right ( future proof ) turbo...been advised to go for maybe a Greddy20G or do i have a custom one made up.......

any help would be great guys

cheers

all the best

jay

nom

Well, it depends what you're after -
Peak power? Early spool? Flat torque curve?
What compromises are you prepared to make?
That sort of stuff

===WRX===

I realy love the impreza abillity to lauch off the line an the mid range pull..the sound, the tourqu, everything so i dont want to loose that feeling, but i also dont want to loose another gearbox ( 5k launches are not to healthy )..i love the feeling of turbo lag ( not to much mind )..the hit when it comes in is great, but i would like maybe a good medium to deal with....

its toaly new teritory for me this, i had a great hybird on my old R5Gtt but that was a long time back.........keep the advice coming guys


cheers

jay

===WRX===

just to add..

im after all round information...i want to do it right first time and not have to suffer the pain of forking out for a new turbo as things develop more, having said that im not after BIG power as i would have to swop internals to, would i not?

harvey

iTrader: (48)

What is actually wrong with your existing turbo? On the way out could be anything.
Are you on a TD04 at present? If so you will find a TD05 provides a good hike. These are available second hand for £150-£300, can be overhauled for not a lot of money if required and can be converted to front entry for £70 or there abouts if you want to go that way.

jonny gav

iTrader: (1)

jay- is your car a wagon or saloon???

===WRX===

Basicly the car has been overboosting and underboosting badly, dropping to less than a bar and spiking well into 1.4bar, ive gone through everything, actuator, AVCR, the Map, the hoses and connections, everything that could be causing it.
I took it into RC, and gave it to Clive to take a peek at, basicly he said that the turbo is gooesed, he did tell me the exact problem, but my discription would not do it justace, the car runs fine at the moment, but the spikes are still present, i just have to run it on a lower than "fun" boost setting, he has assured me that i am doing no damage to the car, but recomends a new turbo.

oh and the cars a saloon.

The prices for the turbo sounds great as the Greddy items are big money, what should i expect to see with a front entry conversion, more to the point what benifits, who can do it, how much, and where....lol..

Im based near warrington..

jonny gav

iTrader: (1)

as its a saloon it has a TD05 as standard,it won't cost a fortune to repair it, or you could get it made into a TD05/06 20G hybrid.
this would be a lot cheaper than the GREDDY 20G and perform as well if not better.
the TD05 is a good turbo in standard form so be careful as the wrong turbo choice would be a backward step.

it depends how far you are wanting to go with your car to be honest, don't believe all you hear about the engine internals either, they are a lot tougher than people give them credit for, poor tuning and using the wrong fuel are to blame for this in my opinion.

hope this helps

harvey

iTrader: (48)

First you need to get your turbo looked at to determine exactly what the fault is. Boost spikes are not usually synonymous with failling turbos.
Secondly, an overhaul on your turbo will not be a lot of money but if you are looking for a power hike and already have a TD05 then a conversion to TD05-06 20G is not a lot of money and this is what Jonny Gav runs. This can give around 380 bhp and over 400 bhp with front entry. Some are around 415 bhp plus eg Alan Garrod. Andy Forrest had 440bhp on this set up with all the supporting mods.
You have obviosly spent a lot of money to date so hopefully it will only take a little more effort to pull it all together and get the best out of your car.
Mail Jonny or myself if you want more info.

ScoobyDuck

iTrader: (1)

Jay - u dont have an email registered - but would like to know what RC say was wrong with it - coz i have exactly the same problem. has been evident since i swopped my 1st turbo after the exhaust oil seal went. the new one has been spiking & troughing (sp?) and nothing will control it !
if u could email me with what yah know please...

cheers & BTTT
Steve


[Edited by ScoobyDuck - 2/1/2004 10:28:56 PM]

Andy.F

Jay

If the car is not smoking, the turbo is still boosting and not noisy then there is nothing wrong with it !! 60k is only 1/4 lifespan for one of these turbos.

Even if you are using some oil this is probably your breather set up drawing oil in at the increased boost, when it peaks at 1.4 bar.

I suspect that you just need your AVC-R set up properly. It never ceases to amaze me how badly some of these units are set up, even by the so called experts.

I don't know if you have had a rolling road result from your car ? Your current spec properly mapped and set up is good for at least 320 bhp, the limiting factor being the small TMIC.
Save your turbo money for the time being and fit a FMIC, remap it and you are up to 350bhp with loads of midrange torque

Andy

===WRX===

Cheers Guys some great advice there, ive been thinking about a Apexi FMI for some time now, but this little issue kind'a threw me.
RC have looked at the AVC-R three times now, and found nothing wrong at all, i totaly trust these guys as i have nothing but good experiance with them, and they always treat me well.

But having said that its always god to get a second opinion before cash is spent.
The turbo is boosting up perfectly but some days its feels..well just not right, other days it feels like its gonna pull my spine out of line...the AVC-R is calling for 1.2bar, but yesterday it could only dial in 1.04bar, then for no reason jumped to 1.16, then back down to 1.04......its bloodie anoying.
I dont mind spending the money if i know its worth while, as the subaru is my only vice so it gets all my attention.

AndyF, where are you based, anywhere near me? ( north west )

cheers again guys

harvey

iTrader: (48)

Andy is South of Edinburgh. Well worth the journey. Ask Alan Jack who also has an AVC-R and very similar experiences to your own.
There is also a possibility that Andy will be in Darlington, Saturday and/or Sunday.
What M/Y is your car?
There is a group buy on now for FMICs for classic shape for 708$ delivered.

===WRX===

Its now looking like low compresion in one of my chambers thats causing the boost problems.....crapola.
It sounds costly, gonna find out tomorow what the damage is and hopefully whats caused it..

any ideas?


cheers


jay

Andy.F

Sounds familiar....one way to find out -

Can you go into "Settings" menu and tell me the "learn gear" settings on your AVC-R (X or O for each gear)
What are the start duties for each gear (% for each gear)
What does the "Duty" profile bar graph look like ? Straight line or curved ?
What is the F/B speed setting in each gear ?

You can email me if you don't want to post publically
andyf9000@hotmail.com

Andy

===WRX===

Ive never had any cause to dought RC, there a really nice bunch of guys, and have always seen me right, no matter what.
Its just a mystery to me, but then i wonder if the fridge light stays on if the door is closed, so its no big deal that i dont understand it

Andy.F

Thanks for the settings list. As suspected they are far from ideal for your car.

Without doubt those settings will cause poor boost control and lead to overshoots particularly in 5th gear and that is where they are most likely to cause damage.

You can try the settings I suggested via email but by the sound of things the damage is already done.

Andy

===WRX===

cheers Andy, nice of you to get back to me. ill give them a try, but to be honest the idea of a new engine long term is not sitting nicley with me

what damage does it sound like has happened, and any chance you can recomend a course of action


thanks again


all the best

jay

Andy.F

I was referring to your own post saying you had low compression. Or was that just someones 'opinion' ? Get a compression check done and then I will be in a better position to comment.
One things for sure, low compression does not cause boost spiking !!

Andy

===WRX===

thanks again guys, it never suprises me just how helpfull the members of this board are.....

ill keep you posted on the compression test, getting it done this week.

cheers again


all the best

jay

harvey

iTrader: (48)

There is also a thread in Drivetrain that is pertinent.