MattyP MattyP Cruise Control 6,317 Member For: 12y 10m 6d Gender: Male Location: Central Coast Posted 18/04/16 12:16 AM Share Posted 18/04/16 12:16 AM So doing some researching for a new engine and ive been contemplating running a high compression ratio engine for e85. I spoke to spool about it and the custom pistons required would set me back around 1800. So that's a little inpractical however I came across the ecolpi engine with its CR of 12 to 1 which would be perfect for me. Can anyone confirm the internals of the ecolpi short block? would the turbo head bolt up to it perfectly? would you see a drop in compression with the turbo head on the ecolpi block? And finally if it would all go together fine could you use the eco lpi pistons with forged turbo rods for safety? Link to comment Share on other sites More sharing options...
barnz Member 3,047 Member For: 11y 3m 18d Gender: Male Location: Brisbane Posted 18/04/16 04:26 AM Share Posted 18/04/16 04:26 AM head will bolt on no worries, no idea on the eco lpi but egas internals are only marginally better than N/A items. Cant see why you couldnt use forged rods with the high CR pistons, however im not sure its a great idea for reliability reasons given your intention will be to make some serious powar. Are you sure you want to commit to a high CR boosted engine in a daily? You will never be able to put 98 in it again even if desperate... Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 5m 8d Posted 18/04/16 06:36 AM Share Posted 18/04/16 06:36 AM Unless the Eco Lpi piston is floating wrist pin which I doubt they will then you won't be able to use aftermarket rods with them. 12:1 is extremely high for boost really it's to high would be a methanol only engine if I was to run Comp that high. Why 12:1? The stock n/a FG enigine is 10:1 which is a better compromise and at 10:1 you could still just run it on 98 with the right cam setup. Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,181 Member For: 10y 1m 9d Gender: Male Location: South Australia Posted 18/04/16 09:46 AM Share Posted 18/04/16 09:46 AM http://www.speedhunters.com/2015/04/everything-you-need-to-know-about-ethanol/ In this article the guy mentions he has a boosted 12.5:1 compression motor. Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 5m 8d Posted 18/04/16 11:15 AM Share Posted 18/04/16 11:15 AM Tight LSA cam does wonder with high comp. Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 12y 10m 6d Gender: Male Location: Central Coast Posted 18/04/16 11:37 AM Author Share Posted 18/04/16 11:37 AM 12:1 e85 on boost would be magic because of all that extra efficiency. Youd start to see fuel econ figures similar to petrol bur also extra power and response out of my small turbo which is another huge plus. The fa20 has direct injection going for it but at 12:1 on petrol id have to consider water injection as a precaution Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 12y 10m 6d Gender: Male Location: Central Coast Posted 07/03/18 01:23 AM Author Share Posted 07/03/18 01:23 AM I wonder if he ever did it Link to comment Share on other sites More sharing options...
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