Well turns out my ringland has gone on number 4.

If you have some stutter i'd definitely recommend having a compression test, i could have quite happily(when it wasnt stuttering) driven the car till it lunched itself. Only an hours labour, or 15 quid for a comp tester and an hourish of your time.

My car might need a rebore, find out when it gets opened up monday, getting forged pistons either way, might get some forged rods too, havent decided yet.

Hopefully that should cure the stutter!!!!!

 

That's not good news. Makes sense though but what a pain. Can see myself going down this route eventually. Who's doing your rebuild and if you don't mind me asking what's your expected rough cost for rebuild with forged pistons?

Thanks. Andy

 

Jimbo - was it you I chatted to down at Triton on Monday ?

The compression wasnt that bad in number 4 (although def down on the other 3) so hopefully just a set of drop in forged pistons will be all it needs.

 

Yeah it was me at triton, yes hopefully wont need a rebore, my glass is always half empty though!!

Cost wise, 700 ish for labour, 120 for head gasket, 50 ish for head bolts, 80 for oils etc, and then the cost of the pistons, im probably going to go with some mahle's from advanced automotives in bristol, only 420 for a set, big brand name. coming in at around 1400-1500. if you have the time to wait you can get some good package deals from the US on rods and pistons.

Tempted to get them to split the block and stick in some rods and bearings, think the guy said its about 300 labour to do it, set of eagle rods is 300, and an ACL bearing set about 110, plus a block rebuild kit around 120, so comes in at about 850.

Getting it done at Triton motorsport in bournemouth, they seem popular, theyre local and were very helpful, said they could have it done in 2-3 days, other than that i dont know anything about them, i'll see how it goes.

 

Thanks for the info mate. That's good to get an idea of the costs to expect. I have started pricing up bits just in case.

Hope the rebuild goes well. 3 days in brilliant!

Andy

 

The Saga continues!!

Didnt need a rebore which is nice, however the turbo has a crack in it and the clutch is gone!

So after getting pissed off with the whole thing, ive now ordered an sc38, forged rods pistons and acl bearing kit and an exedy organic clutch, that with the decat and the remap i guess is good for 380-400, and about 3K.

Expensive christmas! Kids are getting an orange each.

 

Cracked turbo exhaust housings are very common on the VF range. My VF48 has a crack in it! Still goes ok. Although I’m sure upgrading to the SC38 will be rather nice!

I suppose it could have been a lot worse if you had needed a re-bore. Will be a monster once it’s done!

 

Yeah i debated just leaving it, but i got to the point where it was costing so much anyway i might as well be sure im happy with the result, dont want to be wondering what could have been!

Need new brakes now, but the wife might remove some of my anatomy if i did that!

 

LOL. I’d have done the same mate!

Go for Brembo upgrade. If you get brembos & discs from pre 2003 newage sti with 100 pcd they are bolt on for the hawkeye wrx. I paid £400 delivered for mine from a guy on here and sold my old 4 pot setup to someone with a classic for £200 so only cost £200 (ish with extras) to upgrade.

You will definitely need it with those upgrades trust me! Lol.

 

bit of a thread resurection here, i have a bit of a stutter/ flat spot at around 2k in 3rd 4th an 5th, ive only had the car just over a week, its a hawkeye sti 06 model, its been re-mapped many years ago by tsl, usually runs great in my limited time with it, only ran on super from bp or shell, anyone any ideas on where to go first to look at the issue please?

 

Get a subaru specialist to have a look at it. Not sure what specialists are near you in Liverpool, but sure someone on here will know. May be nothing, may just require map adjust! Best to get if checked out.

 

ive already got it booked in for an oil change on thursday. should i ask them to have a look on their lap top though or is there anything specific that they should be looking at? its last service wasnt long ago and ive just looked at the receipts and it had the spark plugs replaced. im bricking it now due to what happened above, god i hope its nothing major and at worst i need to have the map tweeked.

if its already been mapped once doesnt that mean any further tweeks are cheaper due to not having to pay for the licence?

cheers ste

 

If subaru are looking at it then chances are they won't be able to tell you anything. Also, they might re-flash the Ecu with the standard map which could make it worse.

Best thing you can do is find out who mapped it and talk to them. They should be able to help and as you say normally a tweek is much cheaper!

 

its an independant scooby specialist recommended to me on here. ill give tsl a call tomorrow as well

thanks

 

Cool. Fingers crossed then. Hope all ok and its a simple fix! Let us know what the diagnosis is. Good luck .

 

will do, has yours been ok since you had the map tweaked?

 

wonder if it could be the fuel, when i bought it the garage put about hal a tank of bp ultimate in it, ive since filled it up with one full tank of vpower, not sure what the previous owner ran it on though an i think its been in the garage for a while, hopefully it wont be anything but if it is ive already pm'd and e-mail bob rawle to ask his advice and also a rouh price on a tweak

 

Rich didn't have to adjust my map, he did an Ecu reset and the advance multiplier started working and all returned to normal. He did attach all his gear take it for a long drive and checked the map and the car. Everything was running just fine. Since then in the last 4 months I've had no issues at all, been running like a dream. Thank god.

Good luck with yours. Fingers crossed!

 

Well its still doing it this morning. Will monitor it and tell the garage tomorrow. Seems to only be boosting to .5 when the issue happens. It actually feels like the car is stuttering and then next minute it just takes off.

 

Very strange, could be something like a faulty boost solanoid maybe. Boosting at 0.5 bar is definitely not right.

See what the specialists say. Doesn’t sound like ringland failure to me (IMO), sounds like something else.

 

I used to have the same issue and it was largely sorted when I had a remap done. In my case it seems that the knock sensor is a bit over sensitive (or possibly not fitted/working quite correctly) as the ECU occasionally [& falsely] picks up knock.

Most of the time everything is fine, but occasionally the timing will retard and performance drops off - really noticeable at @2.5k when the turbo really starts to kick in.

I plan to swap out the knock sensor - hopefully this will keep the performance stable.

B

 

Bob Rawle has e-mailed me a fair bit over this, he said to definalty get the compression checks done and see what the readings come back at, he then noticed i said the garage had put bp ultimate in it and he said this fuel does not agree one bit with scooby engines so could be a possible cause, the garage put £40 in it and ive since filled up last week and then again today with v-power, hopefully the v-power will dilute it and no damage has been done but the compression checks should confirm this tomorrow, with a bit of luck this will be the case and at worst ill have to get bob to work his magic on my car which is no bad thing. thanks for the replies so far guys and ill post up the results of the garage visit tomorrow

 

I hope theres nothing wrong, but when i went through this i kinda thought it was everything(including fuel!) but the comp test confirmed the worst. I've still got 3 good pistons if you want one to drop in if the worst comes to the worst and you dont wanna go forged, although dont quote me on using second hand pistons as i dont know what the deal with it is, and it might be more expensive getting the rings than a set of forged pistons!! Either way if you want a piston give me a shout, its yours for nothing. Good luck.

 

Been reading this thread with interest. I've just bought a Hawk WRX and it has this problem. It was hesitating (stuttering) between 2-3k revs on anything above 'normal' throttle (i.e you can get it not to do it if you are very gentle with your right foot!). There is no lack of performance though, just a hesitation.

Its just had its 60k service done including plugs and an ECU reset. I was told everything seemed ok with the engine but advised to have a leak down test to rule out anything mechanical, which i've booked in for. The stutter is far less obvious after its service and the car drives alot better, but its still there!
Its had one tank of 95 since i've owned and just about to finish a tank of 97. I will try and find some higher octane but where i live and work this isn't easy!
I'm Hoping the RAC warranty will cover any big issues as i've only had it a week!

Will keep the thread updated

 

Mine has been back from the garage nearly a week now and I've had no issues at all since, keeping an eye on the oil levels as well, I only use vpower and I think I've done 150 ish miles since it went in so I'd sort of expect it to of shown its face again but nothing, I'm still going to get another compression and leak test done before my warranty runs out but I'm a bit stuck with getting the time at the moment due to work. As I say though fingers crossed it was just the fuel, oh and it had only done less than 2k since its service yet the plugs where white nd the oil was black, new plugs vpower oil change and a ecu reset may of done the trick.

I will never go near bp again

 

Sorry I never realised I didn't post up my compression results, it was showing 150 in number 1 which was the first piston he did then all the others showed 130, putting this down to the engine being allowed to cool down as although there was one high the others were exactly the same and I was chatting away to him so that's why I'm going back in a few weeks to get it all done again just to be safe.

My car is now pulling like a train again with full boost and in all gears, I was paranoid for a few days and I still keep testing it at the problematic rev range but it's acting perfect

Touches all the wood he can find hahaha

 

Thats good news!!

So its was fuel related after all? I'll get some decent stuff in mine (off to google where my nearest tesco 99 is!)

 

im hoping it is, bob rawle is still convinced i will at best have to get a tweak to my map, which to be honest isnt no bad thing as bob is a magician

 

Surely BP Ultimate should not damage a production engine or it would be a scandal like the Formula Shell episode in the 1980s!

I wonder in what way BPU doesn't agree, is it worse say than using standard 95 in an emergency?

Touch wood following Dynamix reset of the ECU quite a few months ago I've not had the power loss. Pity about the gearbox and the HID levelling sensors....