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Old 08-03-2015, 11:40 AM   #2901
Edgardo
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Guys I need help I'm new here so bear with me.
This is my problem. So my bug eye blew its motor about 2 weeks in ago at Sonoma raceway on a dynapack running a 16g on e85. It ended up blowing a hole right through the block at 20psi. Motor had 142k. Tuner said everything looked fine as he was data logging. My question is I bought another used motor with only 50k on it I need to know if I will be fine if everything in the tune is dialed in will my motor be ok if I don't get it retuned ? Since it blew I have a half tank of e85 that's been sitting in the tank will that fuel still be ok to run once the new motor is in? I already yanked the motor out waiting on the new motor to come in. Thanks guys would appreciate some answers.
Mod list before it blew
Stock ej205 142k
Blouch 16g turbo
Dw 750cc injectors
grimmspeed uppipe
K&N typhoon intake
Mishimoto Tmic
Walboro 255lph
Invidia catless down pipe
Again thank you.
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Old 08-03-2015, 12:12 PM   #2902
no694terry
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it may have been that motors time. 20psi on a 16g aint exactly pushing it.

BUT those 750's arent big enough, im hitting 90%+ duty cycle on 850's with a VF43 at 21psi. I'd make sure those logs show good fueling

your tank of e85 should be fine as long as you keep it sealed up, its not very humid in your area IIRC
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Old 08-03-2015, 12:34 PM   #2903
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Quote:
Originally Posted by no694terry View Post
it may have been that motors time. 20psi on a 16g aint exactly pushing it.

BUT those 750's arent big enough, im hitting 90%+ duty cycle on 850's with a VF43 at 21psi. I'd make sure those logs show good fueling

your tank of e85 should be fine as long as you keep it sealed up, its not very humid in your area IIRC
Ok thanks.
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Old 08-03-2015, 12:37 PM   #2904
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Quote:
Originally Posted by no694terry View Post
it may have been that motors time. 20psi on a 16g aint exactly pushing it.

BUT those 750's arent big enough, im hitting 90%+ duty cycle on 850's with a VF43 at 21psi. I'd make sure those logs show good fueling

your tank of e85 should be fine as long as you keep it sealed up, its not very humid in your area IIRC
Also if I look at the logs and fueling looks ok am I ok to run the tune on the 50k motor that I bought as long as everything is the same setup ? Meaning mod wise? Thanks again.
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Old 08-03-2015, 01:33 PM   #2905
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as long as its the same 2.0 with 8:1 compression there should be no differnece.
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Old 08-03-2015, 03:06 PM   #2906
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Quote:
Originally Posted by no694terry View Post
as long as its the same 2.0 with 8:1 compression there should be no differnece.
What should my afr look like tuned on e85? I was going to take a look at it through the the Cobb access port as that's the only thing I have for right now. Planning on getting a wide band installed soon.
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Old 08-03-2015, 04:03 PM   #2907
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depends but anything over 12's is getting risky, if your racing it, id probably be looking for mid to low 11's. Gas scale.

Most people and tuners stick to gas scale instead of ethanol scale. So if you setup in gas scale, 11.5 AFR on the gauge is really like ~7.5:1 actually fuel ratio with ethanol depending on blend. Lambda value around .80
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Old 08-03-2015, 04:35 PM   #2908
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Originally Posted by no694terry View Post
depends but anything over 12's is getting risky, if your racing it, id probably be looking for mid to low 11's. Gas scale.

Most people and tuners stick to gas scale instead of ethanol scale. So if you setup in gas scale, 11.5 AFR on the gauge is really like ~7.5:1 actually fuel ratio with ethanol depending on blend. Lambda value around .80
Okay thanks. Do you dyno tune urself for ur own vehicle? Want to dyno tune my wrx for when it's ready? Lol I'm such a newb for when it comes about tuning.
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Old 08-03-2015, 05:20 PM   #2909
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Originally Posted by no694terry View Post
depends but anything over 12's is getting risky, if your racing it, id probably be looking for mid to low 11's. Gas scale.

Most people and tuners stick to gas scale instead of ethanol scale. So if you setup in gas scale, 11.5 AFR on the gauge is really like ~7.5:1 actually fuel ratio with ethanol depending on blend. Lambda value around .80
When the car was on the dyno he said everything looked fine even though I was running about 90% injector duty cycle at redline. I only made about 280whp with 280wtq. I was happy with that number compared to my 91 oct tune that pumped out 279whp with 259wtq.
Also when he was first starting to tune the car he said my ignition advance multiplier was way low for some reason? He said it could've been the heat as it was hot the whole week probably around 95 degrees. I was shocked when he told me that. Maybe 142k on the motor was too much for that kind of power that it was making? I'm lost guys.. Could that been the culprit? To many miles?
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Old 08-03-2015, 05:27 PM   #2910
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In the heat you'll be pumpng less air so less fuel. In my car anyway, my peak DC's are right after peak torque and taper down a little by redline, that would be turbo dependant though.
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Old 08-03-2015, 06:10 PM   #2911
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Originally Posted by no694terry View Post
In the heat you'll be pumpng less air so less fuel. In my car anyway, my peak DC's are right after peak torque and taper down a little by redline, that would be turbo dependant though.
Could u think that my motor starved on oil to the rods while on the dyno? I hear that's common on the ej205 which is why I'm upgrading to an sti oil pan and pick up.
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Old 08-03-2015, 09:41 PM   #2912
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I just got off the phone with my tuner and he says that target afr was 12:1 due to e85 being more knock resistant. Is that afr about right for a ej205 on e85? I'm a bit curious because I'm thinking about taking it back to him to data log it once the new motor is put in and back running.
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Old 08-04-2015, 03:02 AM   #2913
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You would be a fool for putting in another set of cast pistons. Buy a set of forged pistons, hone the block and put it together.

Also 750's seems very small to me for e85.

I put my money on the combustion got too hot for the cast pistons. (a/f, ignition timing) Especially with 140K, miles and probably many hard runs. They do fatigue. And e85 may be more knock resistant, but that does not change the properties of cast aluminum.

There is not a hot rodder I know of who ever thought they could run cast pistons in an N/A car for any length of time, so why turbo guys think they can is besides me.


The other thing is test the fuel. You may have been tuning on e70 or something and got some real e85 or e90 ... leaned out the tune.

edit for question: Did you pull the pan/engine and actually look to see what failed? pistons? rods? valves? foreign object?
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Old 08-04-2015, 09:36 AM   #2914
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Originally Posted by StiLimited View Post
You would be a fool for putting in another set of cast pistons. Buy a set of forged pistons, hone the block and put it together.

Also 750's seems very small to me for e85.

I put my money on the combustion got too hot for the cast pistons. (a/f, ignition timing) Especially with 140K, miles and probably many hard runs. They do fatigue. And e85 may be more knock resistant, but that does not change the properties of cast aluminum.

There is not a hot rodder I know of who ever thought they could run cast pistons in an N/A car for any length of time, so why turbo guys think they can is besides me.


The other thing is test the fuel. You may have been tuning on e70 or something and got some real e85 or e90 ... leaned out the tune.

edit for question: Did you pull the pan/engine and actually look to see what failed? pistons? rods? valves? foreign object?
I haven't gotten the chance to pull the pan yet. Will do when I get home today after work. And I got the fuel from the shop they said that it was e85 R which is 85% ethanol for sure they said. I'm mainly thinking the motor was already beat and worn and trying to make more power caused the motor to pop.. Tuner wasn't really pushing it.. It only made 280whp with 280wtq. Fueling was good through out the range according to the tuner.
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Old 08-04-2015, 02:07 PM   #2915
no694terry
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you can look for an sti v5/v6 motor if you want a "cheap" "built" block, they'll have factory forged pistons in them, and are factory assembled. But i dont think they are needed under 400hp. 12:1 AFR is fine for street but a little agressive i think for track use. 750's are too small for a 16g, i did another log today and im hitting 100% DC on 850's with a VF43 on e85. 22psi tapering to 19 by redline
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Old 08-04-2015, 02:26 PM   #2916
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you can look for an sti v5/v6 motor if you want a "cheap" "built" block, they'll have factory forged pistons in them, and are factory assembled. But i dont think they are needed under 400hp. 12:1 AFR is fine for street but a little agressive i think for track use. 750's are too small for a 16g, i did another log today and im hitting 100% DC on 850's with a VF43 on e85. 22psi tapering to 19 by redline
Isn't a vf43 slightly bigger then a 16g tho? And ur running a couple of more pounds of boost. I would understand that's why ur running max idc's. I was only targeting 19.5 maybe 20psi. But like I said I got off the phone with the tuner last night and he said the motor was getting plenty of fuel idc's were 90-95%. I'm not trying to make crazy power but just a lil more kick to it down low.
Is your motor built or something? Maybe more aggressive cams ?
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Old 08-04-2015, 02:42 PM   #2917
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they flow about the same, my VF is ported, i have a 2" uppipe and a 3" catless exhaust so maybe i squeezed a little more flow out of it. my heads are actually 2.5 DOHC NA heads with stock cams. And i have a 2.2L so theres that too.

You can keep the 750's just know that they will be holding you back on e85, and you need to know what blend you were tuned on, 95% DC on e70 could be seroiusly lean on e80
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Old 08-04-2015, 03:56 PM   #2918
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they flow about the same, my VF is ported, i have a 2" uppipe and a 3" catless exhaust so maybe i squeezed a little more flow out of it. my heads are actually 2.5 DOHC NA heads with stock cams. And i have a 2.2L so theres that too.

You can keep the 750's just know that they will be holding you back on e85, and you need to know what blend you were tuned on, 95% DC on e70 could be seroiusly lean on e80
That's probably why. Ur running a bigger motor compared to my 2 liter.
The e85 was purchased at there shop they supplied it and said its e85 R and explained to me that it for sure has 85% blend. So I don't think it was the fuel that made it go lean. I'm gonna stick the 50k long block in with new timing kit new clutch new flywheel with an sti pan baffle and pick up. Then I'll try one more time at the tuners and hope for God she handles the abuse. Fingers crossed. Thanks no694terry for ur helpful advice. Appreciate it.
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Old 08-04-2015, 04:12 PM   #2919
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I will also be pulling the oil pan off today and closely checking the oil pick up for any cracks as I read online that they are prone to failure. If that's the case then my engine for sure starved on oil to the bearings which caused it let go a rod or something. Will keep u updated once I know.
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Old 08-04-2015, 04:58 PM   #2920
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thats why i use one from a ej22e, on the right. 2.5 on left

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Old 08-04-2015, 05:07 PM   #2921
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thats why i use one from a ej22e, on the right. 2.5 on left

I bought an sti oil pan kit that includes an sti oil pick up. Do u think ill be okay to run that or should I wait a little longer until I have the cash to purchase a killer b pick up or moroso pick up?
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Old 08-04-2015, 06:21 PM   #2922
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Wait and get the killer bee or moroso. Wouldn't it suck if you skimped that and you had another motor failure because you didn't do it right the first time?
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Old 08-04-2015, 06:43 PM   #2923
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Wait and get the killer bee or moroso. Wouldn't it suck if you skimped that and you had another motor failure because you didn't do it right the first time?
Got u. Thanks joshwrx04
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Old 08-04-2015, 09:17 PM   #2924
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No problem my man
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Old 08-04-2015, 10:25 PM   #2925
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Ok so I pulled my oil pan today when I got home from work. Turns out cylinder number 3 broke a rod .. That's the cylinder right next to the turbo correct? So many pieces everywhere..
The motor is seized won't even budge at all.. Could it be that too much heat plus the heat being right next to the turbo plus the mileage that I had caused it to snap? I checked the oil pick up tube for any signs of cracks but couldn't find any. Any advice guys?
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