Great results there Daz. I was always under the impression that the 2.5 produced more torque than hp. Can you shed any light on this?

 

Graphs as promised:

Power and Torque


AFR


Boost, clearly demonstrating just how good the Syvecs is at controlling boost.



Tempo, it all depends on how its mapped. However I'm happy with both figures. Its brutal off the line and just keep going the very best of both worlds

 

this project just keeps getting better and better,601bhp,hand built, and the best bit is its still going strong.you must be chuffed to bits with it as its a real credit to you.

 

Well done Daz

I remembered when I had my last Scoob we did intend to meet for a pint - that was 3-4 years ago and you're only 25 miles away from me

 

Its fairly complex but easiest to focus on it being in this case related to in very basic terms to the size of the turbo, a 400bhp turbo would spool earlier and give more torque than power.

Simon

 

Fantastic results there Daz

 

Ah i see, so the bigger the potential power of the turbo the smaller the difference in torque and hp?

Daz i can imagine your must be mental!! Im running a 2.5 with the sc46billet producing 451hp and 495lb ft and i think thats quick.

 

Seeing Daz's constant improvement with results gives me some real excitement for when mine gets mapped this spring

 

Having had the pleasure of a blast in Daz's beast yesterday it's a raw neck snapper.

By the end of 2011 that car will be quick as there is much left yet.

Well done matey.

 

Well it's F*cked its fair to say.


Took the engine out got the inlet manifold off and this is what I saw:






Then took the head off.

and was confronted by this:





The damage is as follows:

2 pistons are scrap
1 head is scrap
4 valves are scrap.

Bizarrely all the carnage was in number 2 bore and the fallout from that ended up in number 1 bore. Thankfully, I was doing less than 15mph otherwise the lot would have gone through the turbo.

I've taken both housings off the turbo and that is completely undamaged.

The block has miraculously escaped being damaged too the bores are unscathed.

Although there was still tension in the belt I suspect the tensioner failed and it jumped a couple of teeth on one of the cam pulleys.

Aside from the damage caused by this the engine looks in remarkably good nick with everything the right colour, the bores are spotless.

I'm disappointed as hell but it could have been worse. Such a shame as it had loads of potential.

I'm not sure what I'm going to do yet. Might do another 2.5 or I may do a 2.35. Or I may call it a day and just F*ck subarus off. I honestly dont know yet. I will decide after I've got P2 up and running for Clive.

 

Ouch, That sucks. You were lucky you were only doing 15 mph. Why don't you do something that isn't tried and tested. You may get lucky.

 

LOL is a forged 2.5 with avcs heads and a front mounted700bhp capable turbo in a Version 3 type R pretty conventional then?

 

New aim required - you've done 600 how about 700?

 

2.5 >>>>>>>>>>>>>>>Eh yes its conventional>>>>>>>>>>>LOL

 

so sorry to see that daz, i really hope you get some luck soon mate.

 

OK I'll humour you. What "non conventional" path woulld you suggest then?

 

Well something like Andy F is working on 3.2 i think

 

gutted

suppose it could be classed as 'minor' damage, could've been alot worse..........

try and forget about it for a week or two, step away from it and come back to it with a clear head (easier said than done, i know!!)

 

Not what i was wanting to see Daz! Dont give up now just make it even better

 

fack that sux after all the graft u put into it Soldier on Daz.

 

unlucky daz dont give up mate you have one of the best projects going, I have a spare set of 2.0 heads and valves but there non AVCS dont know if they would be anygood as replacements if you cant afford to get another AVCS head

 

Gutted for you as well mate, don't give up Daz!

 

And before it may be mentioned by anyone, no I'm not worried about P2.

I have good faith is Daz's knowledge and commitment.

There are many reasons for a 600 bhp engine to fail other than the build.

 

finaly got 2 the end of this and i gotta say wot a monster build with a sad fail at the end,well done and im gutted 4 u but u know wot thay say about failin off a bike....................
look foward 2 seeing wot ur up 2 next with this mate

 

2.75lt,..........................

 

Thats bad, feel for you fella after all the work and effort you've put in good luck with what ever you plan but it will be a shame to pack it in now you've gone this far

 

What a shame after such a labour of love

TX.

 

If the cam belt jumped wouldn't there be witness marks on the other pistons too? The problem looks to be cylinder specific. If it were the belt it would affect all cylinders.

 

Funnily enough David I said the exact same thing on my 22b.com project thread. It could be down to an overrev that occurred on a quarter mile run at York more than 3000 miles ago. Hopefully I'll have a better look at it over the weekend. I'm also going to get the datalog off the ecu and have a closer look at that.

 

Daz, the 2 dropped valveheads. Are they intakes or exhausts?