I blew it up

[Grant01]

just went out with a light and checked out the walls, no scoring. there are a couple light scratches but i cant even feel them or catch them with a nail. otherwise the walls are perfect and still have hone marks

[itsbrokeagain]

i wouldnt be surprised if you put her back together and it was smoking out the breather or running a bit rough at idle. Ive managed to not scratch a bore up on a 911 but broke a ring (make that several) in some 20 odd places.

Too much timing (and it was minimal to begin with) just kept pounding away and broke the rings on the dyno..would puff oil smoke out the filler cap on the tank like you wouldnt believe.

[Jeremy]

You were running 6.5 psi non-intercooled on a 10:1 motor? I'm not entirely surprised at this outcome tbh.

Jeremy

[Scottinva]

You were running 6.5 psi non-intercooled on a 10:1 motor? I'm not entirely surprised at this outcome tbh.

Jeremy

Also what fuel were you using?

[George]

6.5psi on a 10:1 motor is nothing. Just pull timing as intake temps begin to rise.


Try 8psi on 11.5:1. Thats scary.

[Jeremy]

6.5psi on a 10:1 motor is nothing. Just pull timing as intake temps begin to rise.


Try 8psi on 11.5:1. Thats scary.

It might be nothing with other motors, but the m30 isn't particularly knock resistant.

[Brad D.]

You were running 6.5 psi non-intercooled on a 10:1 motor? I'm not entirely surprised at this outcome tbh.

Jeremy

If it's a b35 like it says in his sig it's 9:1. I did miss the part about it being non-intercooled. Either way I agree that that is a recipe for detonation if everything isn't spot on.

[Jeremy]

You were running 6.5 psi non-intercooled on a 10:1 motor? I'm not entirely surprised at this outcome tbh.

Jeremy

If it's a b35 like it says in his sig it's 9:1. I did miss the part about it being non-intercooled. Either way I agree that that is a recipe for detonation if everything isn't spot on.

Something in the back of my brain was saying "those aren't 10:1 pistons" when I posted that. You're right, those look like the 9:1 dish-dome pistons.

To the original poster, fire rings pushed out like usually result from really high cylinder pressures. Do you have a boost gauge in the car? Are you absolutely sure it was only running 6.5 psi? Was it running stronger than usual recently by any chance?

[Brad D.]

Are you absolutely sure it was only running 6.5 psi? Was it running stronger than usual recently by any chance?

They always get really fast right before the blow up...

[Grant01]

it was running just about as good as it ever had.

running 91 ethanol blend octane

nowhere did i say it was non intercooled. it has a front mount on it. See thread, front mount intercooler officially fabbed.

yes, i have a gauge in the car. the wastegate is set to just about the lowest setting it can go, 95% positive it was 6.5psi

[bornagain]

91 octane ethanol blend should be set richer then 91 octane staight. Due to the lower stoich number for ethanol... Is it just the E15 or E85 or what? cause the ethanol burns hotter too, and is more volatile from what i know, but i could be wrong. but i think E85 stoich is closer to 13.5afr, so even if you thought you were running rich you were probably a bit lean for what you should have been. And what plugs and gap were you running.

[Grant01]

Plugs are standard bosch with standard gap.

Gas is just the cheapo e15 from any gas station.

I think I had the car running richer then 13.5, ill check my tune and post some info up. I know its rich enough for it to lay down some serious soot. I always find it on the back of my car...

[Scottinva]

Plugs are standard bosch with standard gap.

Gas is just the cheapo e15 from any gas station.

I think I had the car running richer then 13.5, ill check my tune and post some info up. I know its rich enough for it to lay down some serious soot. I always find it on the back of my car...

I don't feel like looking, but thats pretty normal if you aren't running a cat. 91 octane? I'm glad my gas stations don't have garbage gas, every gas station has at LEAST 93 octane. Do you have a good msq and datalog, if so post them up.

[Jeremy]

nowhere did i say it was non intercooled. it has a front mount on it. See thread, front mount intercooler officially fabbed.

yes, i have a gauge in the car. the wastegate is set to just about the lowest setting it can go, 95% positive it was 6.5psi

You also didn't say it WAS intercooled, so I went by the info contained in your sig. Don't assume everybody reads and remembers every post of yours when you ask a question or have a problem.

I'm going to start a new thread on the e15 issue, I've wondered about AFR targets myself.

Jeremy

[Grant01]

I dont know how to post the .msq

but here is a little info from the ignition

30% 1200 rpm 11deg
30% 2300 rpm 20deg
30% 3500 rpm 29.4 deg
30% 5500 rpm 31 deg(max)

100% 1300rpm 14deg
100% 2300rpm 17.5deg
100% 3500rpm 23deg
100% 5500rpm 29.5deg

fuel map

20% 1100rpm 14.0
20% 2600rpm 13.6
20% 3700rpm 12.8
20% 5400rmp 12.1

100% 1100rpm 14.0
100% 2600rpm 13.3
100% 3700rpm 12.6
100% 5400rpm 12.1

[George]

Is the % throttle?

[Scottinva]

You just host your .msq file and post the link?

[Brad D.]

That really doesn't tell us a whole lot. If you want you could also post up screenshots of your VE and timing tables.

[Scottinva]

That really doesn't tell us a whole lot. If you want you could also post up screenshots of your VE and timing tables.

I was going to try to get his datalog and his msq, and load them up and see what was going on. You missed that part

[Brad D.]

That really doesn't tell us a whole lot. If you want you could also post up screenshots of your VE and timing tables.

I was going to try to get his datalog and his msq, and load them up and see what was going on. You missed that part

I know, but to just view his tables it would be easier to do that than try to type it out on screen.

[Scottinva]

That really doesn't tell us a whole lot. If you want you could also post up screenshots of your VE and timing tables.

I was going to try to get his datalog and his msq, and load them up and see what was going on. You missed that part

I know, but to just view his tables it would be easier to do that than try to type it out on screen.

I have no idea why he was typing out his tables, I want to mostly see a datalog.

[Grant01]

ill see if i can find a way to host the msq

i have no date logs due to recent hard drive crash. i only have the msq that is on the car and that i happend to have on a jump drive.

[Scottinva]

Well myself and a few forums members took take a glance, and make sure it wasn't something in the tune that would possible stick out to us, that you may not have noticed. However, the datalog was the biggest thing I was lookinng forward to seeing, because it really shows the big picture of whats going on.

[Grant01]

i uploaded the msq file to file factory

snipit of info that uploaded actually turned out to be the tune that i used to get the car started, not actually the one ive been running.(though it seemed off looking at it)

i uploaded the current one.

here is the link

http://www.filefactory.com/file/a176204 ... 4_4th_.msq


i will see what i can do for a datalog on it, but i will have to get the car running first.

[Brad D.]

Wow, dude, I hate to say it but I'd get some help from someone who has a stronger grasp of what is going on. Who did you get these maps from (fueling table looks a lot like mine)? Your timing map doesn't even have bins for anything over 100kpa which is atmospheric pressure!! No wonder it died. You knocked the shit out of it. It was extrapolating off of your 100 kpa setting of 36° of advance! It was likely more than that. Holy hell. Your AFR table also only goes up to 100kpa. At least your fueling table looks like it is at least configured right with enough rpm and MAP bins to get the job done.

[Grant01]

well, that may do it, a friend of mine who has setup a MS and tuned a few cars before set it up and said, that the map should be good for the little boost that im running and when i get larger injectors that is when we would actually do a final tune.

hmmm, well, least its obviously screwed. what do you suggest... for the time being?

anyone have a decent map that i could use until i can get it properly tuned?

[Brad D.]

It sucks that a friend who "knew what they were doing" basically killed your engine.

Compare:




My current map from the MS FAQ. This is on a b35 tuned to 12psi with a mildly conservative timing map.

[turbodan]

Holy shit

[Brad D.]

Holy shit

Ya. It wouldn't surprise me if the headgasket was the least of the OP's worries.

[Grant01]

so i take it import your basic table on to mine for atleast a safe(AKA non blowing up) map