Differences between 7M-GE and 7M-GTE
 

I have no idea why, but it seems vBulletin (the forum's software) doesn't like large HTML tables.... so you'll need to scroll down a ways to get to the table. Just keep scrolling... I promise it's there. <FONT FACE="Tahoma, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">
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<TD STYLE="border: 1px solid #000000"><B>Traits & Components<!--</P>--></B></TD>
<TD STYLE="border: 1px solid #000000"><B>7M-GE<!--</P>--></B></TD>
<TD STYLE="border: 1px solid #000000"><B>7M-GTE<!--</P>--></B></TD>
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<TD STYLE="border: 1px solid #000000">Induction<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Naturally Aspirated<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Turbocharged(stock 6-8psi)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Unique Components<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">ACIS - Acoustic Control Induction System<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Check valve between surge tank and ISCV.<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Air Flow Meter<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">VAFM - Vane Air Flow Meter (deflection meter system)<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">KVAFM - Karmann Vortex Air Flow Meter (optical meter system)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">EFI<!--</P>-->&nbsp;<!--<P>-->Naturally both systems use different engine, engine bay, dash wiring harnesses and EMS.<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">One knock sensor between cyls 3 & 4<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Two knock sensors: First between cyls 1 &amp; 2; Second between cyls 5 & 6<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Ignition<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Single ignition coil w/ distributor<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Multi-channel igniter, multi-coil (wasted spark*)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">CPS located in distributor<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">CPS without distributor.<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Gauge cluster differences<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Battery gauge, different tach circuit<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Boost gauge, no batter, different tach circuit<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Lubrication System<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Lower volume oil pump same pressure as GTE pump.<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">High volume oil pump same pressure as GE pump.<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">No oil cooling components.<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Oil cooler (bypass, pressure regulated)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Additional Cooling Features<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Oil squirters to cool pistons<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">One additional 10" or 12" aux fan between the A/C condensor and
the radiator.<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">&nbsp;<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Turbo cooling circuits (oil and water)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Piston dish volume (this accounts solely for the difference in compression between the two engines)<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">9.5cc<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">19cc<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Cylinder volume<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">40cc<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">40cc<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">OEM head gasket thickness<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">1.37mm<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">1.37mm<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Compression<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">9.1:1 (My calculations show this should be a bit higher. Around 9.3.)<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">8.387:1<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Cylinder bore<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">83mm<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">83mm<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Stroke<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">91mm<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">91mm<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Minimum Recommended Octane (AKI = R+M/2)<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">87 AKI or better (91 RON, 95 RON recommended)<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">91 AKI or better (97 RON)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Transmission<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">W58 (push type pressure plate), A340E<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">R154 (pull type pressure plate), A340E<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">End Gear<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">4.30:1<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">3.91 ('87-'88), 3.73 ('89-'93)<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Fuel Pump<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">Intermediate flow<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">High flow<!--</P>--></TD>
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<TD STYLE="border: 1px solid #000000">Fuel injectors<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">'86.5-'88 Low impedance: </FONT></FONT><!--</P>-->260-320cc/m<!--</P>-->
<!--<P>-->'89-'93 High impedance: <!--</P>-->276-340cc/m<!--</P>-->
<!--<P>-->(NOT interchangable**! Let the rumor of the later model injectors flowing over 20% more die already!)<!--</P>--></TD>
<TD STYLE="border: 1px solid #000000">'87-'93 Low Impedance: <!--</P>-->404-456cc/m<!--</P>--></TD>
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<TR VALIGN=TOP><TD STYLE="border: 0px solid #000000">&nbsp;<!--</P>--></TD><TD STYLE="border: 0px solid #000000">&nbsp;<!--</P>--></TD><TD STYLE="border: 0px solid #000000">&nbsp;<!--</P>--></TD></TR>
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*The GTE ignition setup uses three channels to control spark across all six cylinders. This is accomplished by what is known as "wasted spark". When the igniter is signalled to fire channel #1, for example, it actually sends a spark to cylinder #1 AND cylinder #6. While one cylinder is on its combustion the other is on its exhaust stroke... thus one spark is "wasted". The pairings are: 1 & 6; 3 & 4; @ & 5

**The '89 and later MKIII injectors may be used in earlier models by bypassing the injector pack on the driver's side fender. These injectors are most easily spotted by their green tops where earlier model injectors had yellow tops. The yellow top injectors can NOT be made to function in '89 and newer vehicles.

Well, I'm tired of working on trying to beat this table into submission so I'm calling it a night. I'll go back over the information later to make sure it's all kosher. If there's something else that you think is important to list then please let me know.

Sweet table Cre, lots of good info here. I did notice one thing that I believe should be changed; the auto transmissions you have listed as A134E's, but aren't they A340E's?

Corrected, thanks!

nice work:bigthumb:

Just seen this table . . . very useful

Just one thing, I don't know about other markets, but here in the UK the 7M-GE DOES have an Oil Cooler, the same as on the 7M-GTE cars.