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Alternative Fuels Discussion and Tech on using alternatives such as E85 or Hydrogen or other fuels and/or supplements to Gasoline in Rotary Engines

Help me make the crossover

Old 11-16-11, 02:30 PM
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Help me make the crossover

So I've been doing reading and I just see positives for e85 for the rotary. There's 19ish gas stations in my city that supply it. Id like to know what's specially needed to make the change. My setup on my fd right now is walbro 400 in tank fuel pump, cjm fuel rail w/ fpr, ID725/ID2000 injectors, single turbo running off power fc. If im tuned for pump gas, do I have to change timing in my map or primarily the afr understanding that the afr is not the same for gasoline. Is all stock fuel lines plus the steel braided that came with the cjm compatible with e85? Hope to hear back soon with some answers. Thanks
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Old 11-18-11, 05:07 PM
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The quick answer to your question about the CJM hoses being compatible with E85 is; YES, they are absolutely compatible.

The long version;

The CJM fuel system comes with 5 hoses. The 3 shorter hoses that interconnect the rails and regulator are teflon hoses with a stainless overbraid and plated steel fittings. These hoses are as good as you are going to get for E85 compatability.

The 2 long hoses that clamp to the hardpipe are a different construction. We typically only use the teflon stuff as described above, however, you cannot simply clamp teflon hoses to a hardpipe. So the other 2 hoses are a -6 softline with stainless overbraid and typical twist on or "reuseable" anodized aluminum AN hose end fittings. These 2 hoses have a cross-linked polyethylene inner core, which is fully compatible with E85.

Just dont spill brake fluid on the 2 softlines and they will last a very very long time. Break that rule and they be ruined on contact!
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Old 11-19-11, 02:50 AM
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Thanks!! So you part of cjm, how much am I looking at to send my secondary fuel rail in to go with 4 ports?
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