so far sounds awesome keep it up
Rusty's 7M-GTE Build Thread
I'm building up a 7M-GTE to put into my 85 MKII P-type. I already regularly AutoX, RallyX, and drift my car, not to mention run it in the AKA Rally a 3000+ mile road rally across the US. I decided after only doing 118mph last year on the Bonneville Salt Flats, and after having to run the piss out of my 5M just to keep up with everyone on the Rally that I needed something more, a lot something more.
Since I'm a bomb technician I make good money, so cost while still definitely an issue and wanting to do it efficiently, I wanted to do it right so that I wouldn't have the usual problems from a direct JDM swap engine (buying someone else's unwanted & unknown problems).
88 7M-GTE block
Bored .020 (20 thousandths over)
Honed & Polished
Decked Block
Magnafluxed Block
Stock 88 head
Dye checked for cracks etc
Port & Polish exhaust side
Short-Turn radii removed on intake side
Intake port matched
Stock Exhaust Manifold Port Matched to the Head and polished up (esp where the exhaust flows across the divider and into the turbo).
Used Eagle Forged Rods (these came out of a built motor that had the pistons burnt up due to improper AFR during break-in, only about 250 approx miles if that)
New Probe Forged Pistons .020 Overbore w/ Rings
Stock Crank Magnafluxed
Micropolished journals
Teardropped oil passageways
Undersized Bearings
Front Sump 5M-GE Pan w/ Oil Return already there
Used 5M-GE Oil Pump rebuilt (returned to spec & tight clearances, shimmed for higher pressures)
Intercooler, crossflow Spearco style, 24"x12"x3" w/ 3" inlet/outlet
3" Intercooler piping
3 or 4" Exhaust w/ matching (3 or 4") custom fabbed downpipe
Aeromotive FPR Kit (from Driftmotion)
CT-26 .57 trim (from Driftmotion)
MAFT-Pro
650cc Injectors
Walbro 255lph pump
Fidanza 5M-GE 11lb Flywheel
??? ACT Perhaps, or SPEC Clutch probably Stage 3
Thinking of wedging in a MKIV Aluminum Radiator, need to check on clearances & fitment. Anyone know if the MKIV radiator will physically fit in the MKII?? Nevermind mounting it I'll fab some mounts.
Cost Breakdown (shipping included)
Block & goodies & all that other bolt on crap ($??? don't remember around $300 to $400)
Cams $85.00 (good used)
Probe Forged Pistons $395 + Used Forged Eagle Rods $350 + ARP Head Stud kit $125 = 870 + 35.45 S&H = 905.45
5M-Fidanza Flywheel $290 + 9.99 S&H = 299.99
Walbro 255 pump $98 + .57 Trim CT-26 Turbo $600 + Aeromotive FPR $250 = 948 + 34.81 S&H = 982.81
6x Oil Squirters = around $80 (I think)
Rear Wheel Bearings, Drum Brakes, Axle-Stub Nuts, Seals, Bearing Puller & Grease, & 7M-GTE Hoses = around $500
Stage III Clutch $515 + 26 S&H = 541
7M XTD 12lb Lightweight Flywheel = $100
Intercooler $175
Junkie's Wiring Harness = $450
5M ECU & plugs for Junkie = $55
Upgraded 7M-GTE Oil Pump $325 + ARP Main Studs $139.99 = 464.99 + 17.08 S&H = 482.07
Machine Work... = .... $3514...Ouch
550cc Injectors, Intake Mani, Timing Belt Idler, ARP Flywheel Bolts, and EGR Block Off = 631.06 (driftmotion)
50mm BOV, All Intercooler Hoses, Fuel Dampner Bypass, Form In Place Gasket Sealer, Gates Racing 7M Timing Belt (Kevlar Reinforced), NGK Plugs, NGK Wires = $435.59
Mocal Oil Thermostat w/ AN-10 fittings - $64
6M Crank Scraper - $89.27
LIPP Turbo Outlet Flange ($20.55), Electronic Boost Controller for Maft-Pro ($69.99), Boost Controller Plug-n-Play Harness ($24.99) = $135.36 (SupraSport.com)
Griffin Aluminum Radiator ($195.95), PermaCool Spin-On Remote Oil Filter Adapter ($10.95) = $218.65
AutoGage Water Temp & Oil Press Gauge Kit (Mech. Analog) ($46.95), B&M 6x11" Bar+Plate Oil Cooler ($62.88), PermaCool Dual Filter Mount ($31.95), 1/2" NPT - 1/2" Hose Barb Fittings x5 ($19.75), 1/2" NPT - 1/2" 90* Bend Host Barb ($3.95), -10 AN to -10 Hose Barb x4 ($23.80), Summit Glasspack 3" ($19.95) = 220.98 (Summit)
Full Turbo Gasket Kit = $81.79
Dipstick Tube = $19.09
Plug for Head = $4.87
Plug for Head 3x = $11.46
Plug for Head 3x = $12.72
MKIII U-Jounts 3x = $145.98
Front Main Seal = $13.84
Pilot Bearing for Crank/Xmission = $4.33
Oil Pump Pickup Tube O-Ring = $0.85
Thermostat = $10.69
Cam Position Sensor (CPS) Dust Cover Gasket = $2.08
O-Ring for CPS = $1.72
Head Valley Cover = $37.45
Custom 2-Piece driveshaft LABOR - $380
MKIII Carrier Bearing for Custom 2-Piece Driveshaft - $170
MKIII Driveshaft Bolts, Nuts & Lock Washers 8x - $48
Extra 2.5" U-Bend 2x - $45
VHT Ceramic Enamel Paint 3x Cans - $36
VHT Engine Enamel Paint 2x Cans - $10
Plasti-Kote Primer & Paint 2x - $10
Drill Bit Set - $16
3" Hole-Saw & Pilot Bit - $50
.035" Flux-Core MIG Wire - $20
45* 1/2" NPT Adapters 3x - $50
1/4" Steel Rod for Exhaust Hangers - $7
Various Hardware & Flat Stock for IC & Oil Cooler - $20
R-154 Slave Cylinder - $55
Running Total : $11529.10
Getting Tomorrow:
MSD 8920 Tach Adapter
GM 3bar MAP Sensor
GM AIT Sensor
Left to Get:
Muffler $56 shipped
Now for the pictures. BTW the full gallery of pictures (I'm only posting the good/pertinent ones) can be viewed here: http://s92169157.onlinehome.us/gallery/7mgte
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Stock head before stripping down to take to the machine shop.
![]()
Crank
![]()
Odds & Ends Parts & Pieces (Rear Timing cover, bearings, water pump etc)
![]()
Cam removal before taking to the machine shop.
![]()
Cams are a little rusty (lol) I'm still waiting to hear back if the cams are usable or not.
![]()
This manifold turned out to be worthless since it was full of cracks (no suprise there)
![]()
Not the recommended cam removal method but it worked.
![]()
Something tells me I'll need new lifter caps (or whatever you call them)
![]()
Removing something related to either Fuel or EGR. Gee... I'm wearing a KMFDM shirt... what a suprise.
![]()
Used EAGLE Forged Rods as I received them from Aaron from Driftmotion.com Bushings looked great and Aaron is incredibly good with customer service. No really, I called him @ 8.30pm @ night to leave a message on his business machine and he actually answered and we talked for like 45 minutes. Really helpful, highly recommended.
![]()
EAGLE logo, anyone else thinking Third Reich or is the Industrial music I listen to getting to me.
![]()
5M-GE Pan, front-sump w/ Oil Return already present.
![]()
Oil Pump (duh)
![]()
![]()
All new Oil Squirters for the 7M-GTE block, gotta keep those pistons cool.
![]()
Probe Forged Pistons, Rings & ARP Head Studs
![]()
A good view of the top valve recesses & dish
![]()
Another good view of the recesses & dish
![]()
Fidanza 11lb Aluminum Flywheel
![]()
The 24x12x3 Intercooler, same one that Aaron's got for sale over at Driftmotion.
![]()
The car it's all going into.
371pH
Since I'm a bomb technician I make good money, so cost while still definitely an issue and wanting to do it efficiently, I wanted to do it right so that I wouldn't have the usual problems from a direct JDM swap engine (buying someone else's unwanted & unknown problems).
88 7M-GTE block
Bored .020 (20 thousandths over)
Honed & Polished
Decked Block
Magnafluxed Block
Stock 88 head
Dye checked for cracks etc
Port & Polish exhaust side
Short-Turn radii removed on intake side
Intake port matched
Stock Exhaust Manifold Port Matched to the Head and polished up (esp where the exhaust flows across the divider and into the turbo).
Used Eagle Forged Rods (these came out of a built motor that had the pistons burnt up due to improper AFR during break-in, only about 250 approx miles if that)
New Probe Forged Pistons .020 Overbore w/ Rings
Stock Crank Magnafluxed
Micropolished journals
Teardropped oil passageways
Undersized Bearings
Front Sump 5M-GE Pan w/ Oil Return already there
Used 5M-GE Oil Pump rebuilt (returned to spec & tight clearances, shimmed for higher pressures)
Intercooler, crossflow Spearco style, 24"x12"x3" w/ 3" inlet/outlet
3" Intercooler piping
3 or 4" Exhaust w/ matching (3 or 4") custom fabbed downpipe
Aeromotive FPR Kit (from Driftmotion)
CT-26 .57 trim (from Driftmotion)
MAFT-Pro
650cc Injectors
Walbro 255lph pump
Fidanza 5M-GE 11lb Flywheel
??? ACT Perhaps, or SPEC Clutch probably Stage 3
Thinking of wedging in a MKIV Aluminum Radiator, need to check on clearances & fitment. Anyone know if the MKIV radiator will physically fit in the MKII?? Nevermind mounting it I'll fab some mounts.
Cost Breakdown (shipping included)
Block & goodies & all that other bolt on crap ($??? don't remember around $300 to $400)
Cams $85.00 (good used)
Probe Forged Pistons $395 + Used Forged Eagle Rods $350 + ARP Head Stud kit $125 = 870 + 35.45 S&H = 905.45
5M-Fidanza Flywheel $290 + 9.99 S&H = 299.99
Walbro 255 pump $98 + .57 Trim CT-26 Turbo $600 + Aeromotive FPR $250 = 948 + 34.81 S&H = 982.81
6x Oil Squirters = around $80 (I think)
Rear Wheel Bearings, Drum Brakes, Axle-Stub Nuts, Seals, Bearing Puller & Grease, & 7M-GTE Hoses = around $500
Stage III Clutch $515 + 26 S&H = 541
7M XTD 12lb Lightweight Flywheel = $100
Intercooler $175
Junkie's Wiring Harness = $450
5M ECU & plugs for Junkie = $55
Upgraded 7M-GTE Oil Pump $325 + ARP Main Studs $139.99 = 464.99 + 17.08 S&H = 482.07
Machine Work... = .... $3514...Ouch
550cc Injectors, Intake Mani, Timing Belt Idler, ARP Flywheel Bolts, and EGR Block Off = 631.06 (driftmotion)
50mm BOV, All Intercooler Hoses, Fuel Dampner Bypass, Form In Place Gasket Sealer, Gates Racing 7M Timing Belt (Kevlar Reinforced), NGK Plugs, NGK Wires = $435.59
Mocal Oil Thermostat w/ AN-10 fittings - $64
6M Crank Scraper - $89.27
LIPP Turbo Outlet Flange ($20.55), Electronic Boost Controller for Maft-Pro ($69.99), Boost Controller Plug-n-Play Harness ($24.99) = $135.36 (SupraSport.com)
Griffin Aluminum Radiator ($195.95), PermaCool Spin-On Remote Oil Filter Adapter ($10.95) = $218.65
AutoGage Water Temp & Oil Press Gauge Kit (Mech. Analog) ($46.95), B&M 6x11" Bar+Plate Oil Cooler ($62.88), PermaCool Dual Filter Mount ($31.95), 1/2" NPT - 1/2" Hose Barb Fittings x5 ($19.75), 1/2" NPT - 1/2" 90* Bend Host Barb ($3.95), -10 AN to -10 Hose Barb x4 ($23.80), Summit Glasspack 3" ($19.95) = 220.98 (Summit)
Full Turbo Gasket Kit = $81.79
Dipstick Tube = $19.09
Plug for Head = $4.87
Plug for Head 3x = $11.46
Plug for Head 3x = $12.72
MKIII U-Jounts 3x = $145.98
Front Main Seal = $13.84
Pilot Bearing for Crank/Xmission = $4.33
Oil Pump Pickup Tube O-Ring = $0.85
Thermostat = $10.69
Cam Position Sensor (CPS) Dust Cover Gasket = $2.08
O-Ring for CPS = $1.72
Head Valley Cover = $37.45
Custom 2-Piece driveshaft LABOR - $380
MKIII Carrier Bearing for Custom 2-Piece Driveshaft - $170
MKIII Driveshaft Bolts, Nuts & Lock Washers 8x - $48
Extra 2.5" U-Bend 2x - $45
VHT Ceramic Enamel Paint 3x Cans - $36
VHT Engine Enamel Paint 2x Cans - $10
Plasti-Kote Primer & Paint 2x - $10
Drill Bit Set - $16
3" Hole-Saw & Pilot Bit - $50
.035" Flux-Core MIG Wire - $20
45* 1/2" NPT Adapters 3x - $50
1/4" Steel Rod for Exhaust Hangers - $7
Various Hardware & Flat Stock for IC & Oil Cooler - $20
R-154 Slave Cylinder - $55
Running Total : $11529.10
Getting Tomorrow:
MSD 8920 Tach Adapter
GM 3bar MAP Sensor
GM AIT Sensor
Left to Get:
Muffler $56 shipped
Now for the pictures. BTW the full gallery of pictures (I'm only posting the good/pertinent ones) can be viewed here: http://s92169157.onlinehome.us/gallery/7mgte
Stock head before stripping down to take to the machine shop.
Crank
Odds & Ends Parts & Pieces (Rear Timing cover, bearings, water pump etc)
Cam removal before taking to the machine shop.
Cams are a little rusty (lol) I'm still waiting to hear back if the cams are usable or not.
This manifold turned out to be worthless since it was full of cracks (no suprise there)
Not the recommended cam removal method but it worked.
Something tells me I'll need new lifter caps (or whatever you call them)
Removing something related to either Fuel or EGR. Gee... I'm wearing a KMFDM shirt... what a suprise.
Used EAGLE Forged Rods as I received them from Aaron from Driftmotion.com Bushings looked great and Aaron is incredibly good with customer service. No really, I called him @ 8.30pm @ night to leave a message on his business machine and he actually answered and we talked for like 45 minutes. Really helpful, highly recommended.
EAGLE logo, anyone else thinking Third Reich or is the Industrial music I listen to getting to me.
5M-GE Pan, front-sump w/ Oil Return already present.
Oil Pump (duh)
All new Oil Squirters for the 7M-GTE block, gotta keep those pistons cool.
Probe Forged Pistons, Rings & ARP Head Studs
A good view of the top valve recesses & dish
Another good view of the recesses & dish
Fidanza 11lb Aluminum Flywheel
The 24x12x3 Intercooler, same one that Aaron's got for sale over at Driftmotion.
The car it's all going into.
371pH
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Reload the page I just added pics.
Sorry 'bout that wanted to make sure that CS didn't eat my post after I typed all that in. Had it happen a few times.
Now that's better.Reload the page I just added pics.
Looks nice! A total rebuild = $$$ you da man.
lol, ahh invasion newbies.
The early 7m(87-88) had the 6m crank. The latter 7m(89+) had a much better balanced crank. Smoother and quieter are the two adjectives that come to mind contrasting both early and later 7mgtes. However, the 6m cranked' 7ms have a higher redline and rev-limit.
The 89+ head is also better. The displacement volume of the intake ports are greater since the divider between both valves is negligible. On the 87-88, that divider is quite prominent and sharp. Have heard of Mk3 peeps talking about differences in cam profiles but no hard data has surfaced. And, the jury is out on which type of 7m will can and will hold more power.
Ok, that concludes my post for this month.:badger:
On BTW, just take some Scotch-Brite to the cams (lobes and bearings), then mic 'em. The TSRM lists the specs...
The early 7m(87-88) had the 6m crank. The latter 7m(89+) had a much better balanced crank. Smoother and quieter are the two adjectives that come to mind contrasting both early and later 7mgtes. However, the 6m cranked' 7ms have a higher redline and rev-limit.
The 89+ head is also better. The displacement volume of the intake ports are greater since the divider between both valves is negligible. On the 87-88, that divider is quite prominent and sharp. Have heard of Mk3 peeps talking about differences in cam profiles but no hard data has surfaced. And, the jury is out on which type of 7m will can and will hold more power.
Ok, that concludes my post for this month.:badger:
On BTW, just take some Scotch-Brite to the cams (lobes and bearings), then mic 'em. The TSRM lists the specs...
Not like I haven't done that before ;D
More stuff!!
Some of the original detailing on the NA valve covers starting to flake off.
The other one still looks pretty good, but still going to through the parts washer.
Valve Covers and Cams, we had issues getting the Exhaust cam gear bolt off (obviously). Going to let the machine shop handle it.
New exhaust gasket for getting the exhaust side portmatched.
New (well good) Valve Lash Adjusters/caps/buckets whatever. These ones are ok.
Titan MotorSports 1.4mm Metal Head Gasket
The thing looks 100% metal w/ brass? rivets holding the layers together.
Close up detail of the gasket. Looks like a 0.3mm layer, a 0.8mm layer and another 0.3mm layer. Just guessing, no Micrometer to check.
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