I'm wondering about a few things at this stage.

It seems that the breathing is good and everything in that respect feels remarkably unstressed - unlike before previous failures.

The questions are the piston integrity and the headgasket seal.

If as I think may be the case with the dubious benefit of hindsight and a few EJ257 failures behind me, that the peaks of cylinder pressure are what damage things, with some care it might take a little more yet.

I suspect that a 2.5 being blown at 1.6 bar is probably going to get most of what this turbo has to offer with any decent efficiency? Obviously I could run more torque yet, but the flat boost curve gives it a remarkably pleasant linearity and power band.

Clutch seems to be holding.

 

1.6 bar with that compressor on the 2.5 seems to be the sweet spot. I look forward to getting my big engine sorted once the 2.33 is up and running, and perhaps back down to a gt30 sized turbo.

I am glad you stuck with it.

DCCD, new front and rear diff and a quickrack?

Paul

 

Gaskets and pistons are holding up well, however the human interface is slowly but surely cracking under the pressure to crank it up

Andy

 

I'm not on the Scottimax yet though

Give it time...

 

18 degrees at 11.5:1 at 6000 RPM with 1.5 bar causes detonation on Optimax. It was a hot day today, and we let it heatsoak, and I had a lunatic driver available to test it

So for running Optimax, the sweet spot seems to be 1.4 bar flat. Trying 1.5 bar in the midrange could make the top sparklier as well.

Perhaps with a different long block it would take more timing, but how I had it before was sweeter. That is how it stays for now.

In the old days I would have flung in a load of octane, put the boost up more, and advanced the ignition 5 degrees and blown it up. I hope I've learned... time will tell.

 

I hope you don't have the same cavalier attitude towards the treatment of your patients ...Next!

F

 

What ? you mean "It's a virus, fek off, next"

 

I put the "fek off" bit a bit more politely in case it turns out not to be a virus

 

Lol. I bet your patients think you're typing out prescriptions when really you're answering BBS queries

F

 

Sold my spare car, gearbox and 2.5 engine recently.... hope I don't need them LOL. Has to be a daily driver now, all I have. The last reason I didn't drive it was a puncture though, this engine has been in since last summer, gearbox not missed a beat for 18 months daily use except for about 2 weeks with engine trouble in that time and holidays. So for now, everything is holding up fine. I am not superstitious just stupid

 

lmfao @ John!

glad it is holding up..

has the subject of AFR on the 2.5 STi short block been discussed??

Simon

 

That sounds like a good idear simmon as im just in the middle of setting up that on my autronic sm4.
And its soooooo smooooooth to drive compaired to the link.

 

so now the thread can be renamed

"borrowing a friends 340/300 toy and turning it into a daily driver"

 

LOL, I did say I was stupid, and you did drive me to do drag racing and trackday despite my previously better judgement I was happy with a Dawes/decat/PPP until you corrupted me

Thanks for the nice courtesy car, never had one with such good brakes and suspension before

Has to be said though, you can't flat shift (or nearly) and drive like a fanny and then get upset when this sort of thing happens.

 

well all that performance for the road is just a nonsense anyway

ps. there was no nearly during my 3 runs but if you want me to quote what you said in the queue I can

 

please quote

 

I didn't think it was anything more sensational than, "Do an 11, don't try to break it, but if you do, what the ****"

 

LOL

Fairly similar to what Mark said to me then on my first drive, except it was 10 instead of 11.

 

iirc , it was something a bit harder

"I dont give a **** what you break , just get it in the 11's"

 

Should have the gearbox back in a week or two. 1st and 2nd gear synchros are on back order until 21/7/5, but having discussed with the builder we're going to use the old ones as whilst they show wear, having the car off the road until nearly August is not amusing and they aren't too bad. Not ideal, but the joys of running a modified daily driver....

As the car is five years old in the autumn I have been wondering about a new one fro some time.... MY06 looks "interesting". Need to decide between the factory 2.5 option if it appears and a Type 25 I think, latter has a lot in its favour. M3 is an all rounder but didn't excite me. There is a possibility to build a non-road based project, but the question is the expense, the breakages, and the actual usage it would get. Similarly if I buy another daily hack, whether a banger or something posh and keep my present Scooby I don't know how much the latter would get used. I feel insurance is going to get tricker for heavily modified cars in the coming years also.

Suggestions?

 

Keep the current car for Highdays and Trackdays and buy a sensible doctors car like a Forrester (STi of course).

Been nagging my good lady to buy one of these for ages but she reckons I will start 'messing' with it.

Andrew...

 

I really like the Forrester STi It would be tempting to mess with and your good lady knows you better than you know yourself.

The problem is that the Scooby I have is a little compromised as it is trying to be road and fun car at present. I do enjoy it in both environments though, I think trackdays are what you make them whatever you're driving.

 

john, if your getting another car, make sure its german

M5 or VAG Diesel.

buying another scoob is stupid. (servicing / depreciation etc)

David

 

You've been looking at my EJ33 again

Andy

 

Trying a Golf GTi and a Civic Type R in the morning... tempted to keep the old Scooby though. I like the Golf, the TDi 140 was impressive. The FSI engine in the GTi seems quite economical

 

Then I priced up the Golf and even with just some of the options it hits £26 K LOL. STi money But having two Scoobs is a bit daft.

 

So how daft is having 3

 

LOL.

 

how about a skyline john? very tuneable,stronger than scooby and two more lovely cylinders.

 

Are you using some sort of engine cut to facilitate the flat shift? Or has it been bouncing off the limiter?

Paul