Volumetric Efficiency 101

Volumetric Efficiency 101by Brian Barnhill Source : http://tunertools.com/articles/volumetric-efficiency.asp This can actually be a quite tricky subject, mostly due to confusion and differing opinions among many people. Volumetric efficiency (VE) is typically defined as "the actual amount of air being pumped by the engine as compared to its theoretical maximum." Basically, VE is a measure of how "full" the cylinders are. As most of us will know from basic science, gas will expand to fill its container. Seemingly, that would suggest...

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4G63 Camshaft Specifications

CAM ADV Duration Duration @ 1mm Peak Lift (mm) Centerline Intake OEM EVO 248 200 9.8 Exhaust OEM EVO 248 200 9.32 lIntake Brian Crower 272 206 10.54 Exhaust Brian Crower 272 206 9.86 Intake Brian Crower 276 216 11.07 Exhaust Brian Crower ...

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Forged Pistons , Ring end gap & Piston clearance by Arias

Minimum Ring End Gaps And Clearance Ring Application Minimum End Gap Per Inch Of Bore Premium Top Rings Blown Fuel, Alky, Gas 0.008 Injected Fuel 0.007 Blown Fuel, Alky, Gas 0.0075 Blown Gas, Street 0.0065 Nitrous Less 250hp 0.0065 Heavy Nitrous 250hp+ 0.0075 ...

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Mitsubishi Spark Plug list

MITSUBISHI ModelEngineEng. sizeDates of releasePlug typeV-lineGap 3000 GT6G73.0 97-PFR6J-11-1,1 3000 GT6G72 MPI TC3.0 95-PFR6J-11-1,1 3000 GT6G72/T DOHC3.009.92-PFR6J-11-1,1 Carisma4G92 SOHC1.6 97-BKR6E-11141,1 Carisma4G93 SOHC1.8 97-BKR6E-11141,1 Carisma GDI4G93 GDI1.809.97-PZFR6B-0,8 Carisma 1600 DAO4G921.609.95-BKR6E-11141,1 Carisma 1800 DAO4G931.809.95-BKR6E-11141,1 Carisma 1800 DAO4G931.809.95-BKR6E-11141,1 Champ...

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Cable Plug Information

Review: http://www.dsmtuners.com/forums/frequently-answered-dsm-questions/147493-answer-spark-plug-wires-ignition-wires.html This is to help all those looking to upgrade their ignition wires and are not sure what brand they would like to buy. The following is the resistance measured in ohms/ft by each major ignition wire distributer. (low = good, high = bad) MSD Ignition 8.5mm Super Conductor (40-50 ohms/ft) Accel Thundersport (150 ohms/ft)...

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VR4 vs Evo Layout

VR4 and Evo has different layouts, different intake manifolds. The Coil plugs of the VR4 are longer as the coils sits down below compared to the evo. Credits of pictures to VTEC_THIS from dsmtune...

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4G63 Spark Plugs Info

The Spark Plug FAQ: or "What spark plugs should I use in my DSM?" Every few weeks, sometimes even every few days, there comes a thread where a new owner of a DSM asks what the best spark plugs are for his or her car. More rare, but still seen every once in a while is the question posed where the owner is having problems with the car stumbling, hesitating, losing power, and otherwise not running quite right. In some cases, it is due to not running...

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Ferrea Performance Valves by Onedirt

We often do not change our valves keeping in our minds that our OEM valves is all we need. To extract the maximum horsepower of the head, valves places an important role. Most common valves comes from Ferrea and Supertech. Below is an article by Andrew Wolf from Onedirt.com Source : http://www.onedirt.com/tech-stories/engine/guide-to-performance-valves-with-ferrea-racing-components/ High performance engines deserve a set of high performance...

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