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BoostnFool
Joined: 03 Feb 2008
Posts: 27
Location: Toledo, OH
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 Posted: Sun Oct 04, 2009 7:49 pm Post subject: Rubber sludge? |
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A few of us are using E85 on turbo 4G engines, we love the performance gains, but are curious and maybe concerned with a build up we have found on a friends injectors, and intake runners... thoughts are welcome.. He has run straight E85 about the last year, a 50/50 blend of it and gas the year before.
the blob is in the worst in the first cylinder to be fed, but there is stuff in all 4 intake runners
Our first thoughts are maybe rubber from stock fuel line?? the only rubber in the whole fuel system is a 8" piece from sending unit to hard line??
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Galant VR4
looking for 11 sec.
On E85 and whatever it takes |
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Alcohol
Joined: 17 Apr 2007
Posts: 634
Location: Central Wisconsin
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| Posted: Sun Oct 04, 2009 10:17 pm Post subject: |
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| Does it dissolve in gasoline? |
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Steve-o
Joined: 05 Oct 2009
Posts: 1
Location: Toledo,ohio
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| Posted: Mon Oct 05, 2009 9:38 am Post subject: |
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Thanks again for posting those pics Todd .... Those injectors are from
my car .. I took them into work and we have this BG fuel system cleaner . I dipped the injectors into it and it doesn't disolve it just makes it easier to wipe off ..I'm also running methanol injection and used about 2 gallons worth of strait methanol before switching just to water.. When I was just using a 50/50 blend of e85 and gas the intake looked good and the injectors looked normal.. Matter of fact boosting fool has those injectors now. |
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Eric68
Joined: 01 Nov 2007
Posts: 331
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| Posted: Wed Oct 07, 2009 11:26 am Post subject: |
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If you have a non-compatible rubber material in your fuel system that is exactly what will happen -- it will make a sticky black sludge.
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E85 racer and E85 carb builder
www.horsepowerinnovations.com
E85 powered 68 Camaro street car
Best ET on motor 9.96 @ 133 MPH, 5.92 on N2O in the 1/8th |
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BoostnFool
Joined: 03 Feb 2008
Posts: 27
Location: Toledo, OH
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| Posted: Sun Oct 11, 2009 7:56 pm Post subject: |
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| Eric68 wrote: | | If you have a non-compatible rubber material in your fuel system that is exactly what will happen -- it will make a sticky black sludge. |
without any trace of sludge in the hat of the injector? the screens in the top of the injectors are clean. the gooo is formed on the spray end only.
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Galant VR4
looking for 11 sec.
On E85 and whatever it takes |
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Eric68
Joined: 01 Nov 2007
Posts: 331
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| Posted: Thu Oct 15, 2009 8:03 am Post subject: |
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Hmm. Weird. I'm not much of a FI guy, I have seen it in the plenum of carbureted stuff below the carburetor. Maybe it takes some heat from a backfire or something to form???
_________________
E85 racer and E85 carb builder
www.horsepowerinnovations.com
E85 powered 68 Camaro street car
Best ET on motor 9.96 @ 133 MPH, 5.92 on N2O in the 1/8th |
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nelson8708
Joined: 22 Aug 2008
Posts: 67
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| Posted: Fri Oct 16, 2009 6:07 am Post subject: |
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| BoostnFool wrote: |
without any trace of sludge in the hat of the injector? the screens in the top of the injectors are clean. the gooo is formed on the spray end only. |
+1 same thing on my injectors. Not that bad but i only have about 3K miles running straight e85..nissan KA engine also. All the stock rubber line in my system was replaced with e85 friendly line. Even the 6" piece that connects the walbro to the sending unit.
I would also like to find out what this is....
_________________
Boosted since 06-06-2006
Tuned on e85 as of 3-30-2009
KA24E-T sold 10-3-2009
KA24DE purchased 12-5-2009 (here we go again)
KA-T running on corn with water injection coming soon |
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Obormot
Joined: 27 Jun 2008
Posts: 44
Location: Ukraine
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| Posted: Sun Oct 18, 2009 7:18 pm Post subject: |
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fuel injector after 40 000 km on gasoline and about 20 000 km on ethanol:
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