TD_D mod journey. From stock to the 'bastardmobile'

[Td_d]

Sorry to hear Holy - I'm still way behind you in the engine stakes

That is the one thing about our beloved STI's - they are highly strung. When shit goes wrong, it goes wrong...

I'm just hoping the heads are not warped, and I'm wondering what would have caused the HG to go - built engine with ARP studs, etc. etc should be able to handle 1.5bar - hell, it should be able to handle 2 bar. And I've been very carefully monitoring detonation, I really get none at the high load high RPMs, plus EGTs should be in check with meth and water injection. Oh well, if it is HG, I guess we'll only know when it comes out.

 

[Td_d]

Yeah, Bubba - it's all pointing to an HG problem - as soon as I manage to get the damn car into the shop. I've already briefed them on what the likely cause is, will do compression and leakdown.

Maybe those Kelford 268's can finally go in now

 

[HolyCrapItsFast]

You're going to try and rebuild an engine in less than a week? I wish you the best of luck man... If you manage to do it then you one badass mofo.

Oh no... I had a block all ready to go fully built along with spec c jdm heads and 272 cams and manely turbotuf rods and CP 9.5:1 pistons. I'm actually really stoked... The engine just went in and now all I have to do is bolt everything up...

Sorry for Hijacking your thread TD... I'm such a whore. :lol:

 

[Td_d]

Hahaha... No worries, at least I can rest easy knowing my engine didn't blow racing a Honda

I wish I had a spare block lying around...

 

[Td_d]

Well, strike is finally over, so I can get the car in to the shop to get sorted out. I'm actually glad I didn't get it out there earlier, there were numerous incidents of violence with the strike, and the guys were basically land-locked in the workshop for safety sake... Mechanic actually stopped by my place today, had a some time on his hands after a meeting, he concurs with me that I have the shittest luck Without a doubt, the reason why the radiator went was that a sizeable stone or something similar somehow managed to get past the bumper, grill, my oil cooler, and whack the radiator head-on - enought to cause a leak - small enough not to notice, big enough to bleed the radiator dry.

Initial visual assesment is that it might not be as bad as I think it is - but obviously he wants to get it into the workshop to do a proper colour test on the coolant to check for oil, compression etc. - aiming to get it there tomorrow. The upside had been that in the meantime I've been driving my dinky toy 1.1l Kia in the middle of a fuel shortage (due to the strike, it's been a major effort to find fuel - stations are running dry). Subaru = fill every 3 days. Kia (with a 35l tank) = fill every 3 weeks

I've been helping a fellow STI owner (2006) scale his MAF tables - been driving around with an intake and no tune, not surprisingly closed loop (and I'm sure open loop) is seriously lean (and the 06's can only correct up to 15% - and he's well above that). With one rescaling, already managed to get closed loop below 10% combined corrections. There's something that's bothering me about the logs he sent me though - he has serious knock (saw it before the MAF rescaling too) at very low loads and RPMs - 700-800 idle and 1300 - all well below 1g/s load. AFRs are tracking nicely (especially now after the rescale) at 14.7 at idle - but FLKC is pulling 7* (and FBKC is pulling further timing too). I must add, this is a bone stock Rom - no changes to fueling or timing. He has had forged pistons put in - I'm guessing it's false knock from noise - any ideas?

 

[Td_d]

Should find out the results of the compression and leakdown test on Monday afternoon, keeping my fingers crossed...

 

[HolyCrapItsFast]

Me too!

 

[HolyCrapItsFast]

Hey I discovered Fast Poll logging in the new RomRaider... I collects so much data it is reminiscent of the logs you where giving me when you were doing CAN logging. I didn't think it was possible for the GD to log this fast but it works on even the 04.

So how is it going with the vehicle. I'm hoping for some good news!

 

[Td_d]

Yeah - that fast poll option quite awesome - apparently 5 times the speed of SSM, close to CAN logging - people have been raving about it.

It's in for testing at the moment - inconclusive as yet - coolant test was passed, waiting for the pressure results. I might get lucky...

 

[HolyCrapItsFast]

I'm keeping my fingers crossed

 

[Td_d]

I've been keeping myself busy with learning how to disassemble the ROM, it's actually fascinating how much complexity these Roms have. Yeah, I'm a geek, I know... there are literally hundreds of tables in there, many of which have not yet been identified (or at least the logic, and hence the purpose thereof). I hate to say it, but I get lost for hours looking for patterns in hexadecimal code :tard:

Speaking of which - if you get the chance, could you post those fuel overrun tables? I saw a new member on here that joined in the past two days or so has an '08 GR, I should hit him up for a couple of table dumps. I wish I had a copy of ATR and the '08 Rom, that would make life so much easier in trying to hunt down new stuff

 

[HolyCrapItsFast]

Oh yes I forgot... I will get those to you.

 

[Td_d]

Well, I haven't seen the comp and leakdown results yet, but it looks like I dodged a bullet here! Mechanic still wants to drive it in a little this evening with the new radiator, and to make sure he doesn't pick up anything else. Phew...

 

[HolyCrapItsFast]

Okay good news so far... Make sure he propperly burps the system... These configurations are esspecially tempermental when it comes to air in the system.

The reason is because since the cylinders are on a horizontal plain, air is allowed to accumulate in the water jackets and it can get stuck in a pocket. Under heavy driving the lack of coolant in that area can super heat and when water does reach it, it voilently reverts to steam and pushes everything out the overflow tank.

In a regular configuration the air never accumulates around the cylinder wall. It will simply float to the top and escape when it begins to flow.

 

[Td_d]

Yeah - I've heard that they are rather sensitive to air. On the mechanical side, his work is great - that's also why he wanted to keep it tonight once it came back from testing, just to make sure that the radiator was properly installed, and nothing else pops up. Hopefully, all is good - if it is - injectors will also be installed tomorrow, and then I start tuning that!

Looks like I got really lucky here (well, seriously unlucky first - the space through which this rock entered is really very small - just my luck). Viva ARP head studs!

 

[Td_d]

Man... I know I've said it already, but I am blown away by how many tables are in this Rom. Just on the 3d and 2D tables, there's got to be close to a 1000 tables, many of which are not defined (fueling, load, engine coolant, you name it). And that's not including all the 1D tables. Impressive engineering...

 

[HolyCrapItsFast]

Yes but I'm happy with the ones we have. My brain is filled to capacity.

 

[HolyCrapItsFast]

here are the tables I have for over run.

 

[Td_d]

Thanks George! Much appreciated - it's definitely similar, though not identical - that might be a function of the MY difference. I've definitely seen that overrun fuel cut counter table in the Rom as well. Making some progress!

 

[Td_d]

Right, injectors will be on tomorrow, so I'm going to put together the map to go on the car.

I have some, but not all of the data I need... Injector flow scaling is 1190cc @ 3Bar (which I will have to scale down proportionately given my MAF hack by 18%), and I have latency figures but only for 14V - 1ms. Any decent way to extrapolate the rest of the latency tables values?