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It features a higher compression ratio than its predecessor (10.1:1 vs 9.3:1) along with twin-scroll turbocharger and fuel and oil systems upgrades. This new engine will deliver more low-end torque than its predecessor and all-wheel drive will be available in this configuration.
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02-23-13 12:06 PM - Post# 2319895 In response to Jim.Biron As said, it depends on a LOT of factors, but in general FOR PRE-86 SMALL BLOCKS AND HEADS (cast iron only), 87 Octane is good up to about 9.5 to 1, 91 octane is good up to about 10.5 to 1, and 93 can go up to about 11.5 to 1 - if the motor is properly dialed in. Dec 26, 2011 · The tank now has 8 gallons E85 & 5 gallons 87 gasoline. It even costs less to fill. Higher compression motors will benefit from a higher octane fuel as the computer can advance the timing more than a lower octane fuel can. Alcohol also has a longer burn time so the motor can create higher torque. My Vue has a 10:1 compression ratio.
"There is more to gain with a stock, naturally-aspirated car by adding and tuning for E85 fuel than just tuning a stock, naturally-aspirated car on pump gas," he said. "On a naturally-aspirated setup, we have seen a 20-25 horsepower gain with E85. This is mainly due to E85 working with the LT1's high compression and cylinder head design."Figure 4.27: Compression ratios of pure turbopumps and turbo drag pumps For turbopumps which are designed for high gas throughput, a compromise is made where the gas throughput, fore-vacuum compatibility and particle tolerance are concerned and the distance between the gaps in the Holweck stages is increased. Do not use E85 in a pre-2009 6.2L. The injectors are not sized for the higher flow rate needed for E85, which only has 70% of the BTU content of E10 gasoline. So, when you go WOT with E85 on a 2007-8 6.2L, the injectors go "static", meaning they never close. This washes the oil off the cylinder walls and causes erosion damage to the cylinder bores. Mar 20, 2014 · Any idea what changes if i go to 8.5:1 or 10.5:1 compression ratio? 8.8:1 is about as high as most people go. Some have run 9:1 or 9.5:1 on 93 but they usually had a stand alone and spent a lot longer getting to tune dialed in on a dyno to get their power safely done. Jul 06, 2018 · Best Cars. All the best cars. Best Affordable Cars Best ... the VC-Turbo engine increases its compression ratio. This means that, while output is pretty much a wash between the new 2.0T and the 3 ... Sep 30, 2016 · Cam – IMO a high lift with low overlap/duration grind works best with a typical turbo system that see’s 2:1 or higher back pressure ratios. Quench -.050-.180 is a no go zone that promotes detonation. Above.180 has no quench area and works well. If you do run quench,.035” to.045” is the general acceptable range. “There is more to gain with a stock, naturally-aspirated car by adding and tuning for E85 fuel than just tuning a stock, naturally-aspirated car on pump gas,” he said. “On a naturally-aspirated setup, we have seen a 20-25 horsepower gain with E85. This is mainly due to E85 working with the LT1’s high compression and cylinder head design.” Since the air input into the vehicle engine is about the same regardless of which fuel is used, the engine must burn more E85 fuel to keep the air/fuel ratio correct. Because E85 is highly resistant to spark knock (high octane rating), a higher compression ratio and more advanced ignition timing can compensate somewhat for the lower fuel energy ...
Up increases the compression ratio to 14:1 for better efficiency at low turbo boost; down decreases it to as little as 8:1, allowing higher boost for more power. It’s a little complicated but ... Apr 18, 2017 · If you're moving to E85 for performance, start with the 60 lbs Siemens/Deka injectors. Keep in mind that your gas mileage WILL suffer. If you can't get E85 easily, your next best bet is an.. Intercooler. The next bang-for-the-buck advanced mod would be an intercooler. Let's face it, the M90s just aren't efficient superchargers when you start ...
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If you change the compression level (80, 50, etc.) and you're unsatisifed with the quality, you may want to try a different image library. LEADTools has a good (non-free) engine. UPDATE: As a commenter mentioned, 100% quality still does not mean lossless compression when using JPEG. CT Racing have tested methanol fuel extensively over the last five years and have learned how to set up engines and carburetors for most ATV applications. The following is a list of tips that every methanol fuel user should be aware of. Preliminary Facts Regarding Methanol Methanol fuel is generally harder to set up for than gasoline, therefore CT recommend its use for experienced tuners only ... It uses E85 Ethanol that gets squirted directly into the chamber via direct-fuel-injection, thus fooling the engine into behaving as if it's burning 150-octane fuel. As a result, it can tolerate the typically destructive combination of high boost plus high compression ratio. I have heard that an e85 tune will give more power. Naturally I'm intrigued. Please tell me everything I should know about this tune and if it's worth it. Thanks guys:thumbs: Apr 08, 2015 · That does not mean that running 12:1 afr on e85 will make less power than 11.5:1 on e10. That has to do with the engine combination. The cooling, higher octane, and increase in dynamic compression ratio is why ethanol makes more power. Also nitro car run 13-14:1 compression ration. In a nutshell… Cam - IMO a high lift with low overlap/duration grind works best with a typical turbo system that see's 2:1 or higher back pressure ratios. Quench -.050-.180 is a no go zone that promotes detonation. Above.180 has no quench area and works well.