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Ke90 Ke90 is offline
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Car: M240i
Default Piston Head Pictures - 03-14-2020, 08:33 PM

Here are some pictures of my piston heads after changing out spark plugs.

2017 M240i manual
9k miles
Gas: 93 + Boostane (approximately 98-99)
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ManiN54 ManiN54 is offline
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Car: 2007 335i FBO stock turbos
Default 03-20-2020, 11:21 AM

Why does it look like the pistons are melting? Is it just an illusion?


1/4mile 11.8@117.96 19psi
07 E92 335i (the Alpträum) | Alpine wht/ Seibon carbon hood/ trunk| M parallel wheels| street tires
FBO| modified oem airbox lid w/K&N drop-in| stock turbos/ stock inlets| Walbro 465lph LPFP| Jb4/mhd backend flash| Map 6 w/E60 No Meth| Built and tuned by me.
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B58_M240 B58_M240 is offline
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Default 04-30-2020, 02:50 PM

What mods and JB4 MAP are you running?
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Ke90 Ke90 is offline
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Default 04-30-2020, 04:19 PM

Quote:
Originally Posted by B58_M240
What mods and JB4 MAP are you running?
Those are old pictures, I will be updating them hopefully soon.

At the time:
1. VRSF cahtless downnpipe
2. BMS Intake
3. BMS Oil CC
2. MHD w/ BEF
3. Map 2-3
4. 91 Octane + Boostane


Now mods are same except I run full E85 with a Dorch stage 2 HPFP. I run map 3-4 now daily.

I am curious to see how they look after I ran some cleaners through and been doing straight E85. I do need to eventually take cylinder head off and get to those pistons but for now it has been running well, w/ little to no timing drops.
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Vorsprung_CJB Vorsprung_CJB is offline
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Car: 135i N54
Default 04-30-2020, 06:29 PM

The plugs look like pretty typical gunk buildup for full time octane booster usage. Never seen pistons that ugly though, how much of that crap are you running? Again its not really meant for full time use.
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Ke90 Ke90 is offline
B58_Dude
 
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Default 04-30-2020, 07:21 PM

Quote:
Originally Posted by Vorsprung_CJB
The plugs look like pretty typical gunk buildup for full time octane booster usage. Never seen pistons that ugly though, how much of that crap are you running? Again its not really meant for full time use.
I was filling up every tank with it. I did about 6 tanks before I stopped. I was not aware not to be used full time, lesson learned.

As for the piston heads, I will hopefully get some more pictures this weekend with the oil change. I have been told pistons are not that bad, looks like I was running lean. However, I have not had any issues with timing on E85 I am curious to see if any of the cleaners helped. We will see

But thanks for the input.
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Ripper61 Ripper61 is offline
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Car: 2010 535i M-sport
Default 05-04-2020, 03:29 PM

Yeah, I used that on my 535i a while back...never again.


2010 535i M-sport SAT / BMS dci & occ / RB1's, inlets & pcv / VRSF **** / ER fmic & cp w/TialQ bov / N20 tmap / PR stg2 lpfp / B8+H&R sports / OE M6 167's / Motiv-tuned MHD / 467hp&477tq on e30
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Ke90 Ke90 is offline
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Default 05-04-2020, 06:00 PM

More pictures after fuel cleaner and running full E85 now.



Just cylinders 2 and 3.
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