Recently I've been asked some questions on my 7MGE Supra engine swap. So I thought I'd put up some information. Originally my rig had a 22-RE, so the information I'm giving is geared to a 22RE->7MGE swap, the 3.0 V6 is a bit different. Also, I swapped in a naturally aspirated engine, the turbo can also be bolted in but uses a different harness, AFM and ECU, plus there is intercooler plumbing to find room for. The biggest difficulty in this swap is finding room in front of the engine since it is an inline 6, but some creative trimming goes a long way. The 7MGE is built typical Toyota rock solid, but many have had problems with headgasket leakage - the problem with the headgasket was insufficient factory torque (52 ft/lbs) and is remedied by increasing the torque to 72 ft/lbs. A completely bullet-proof fix would include an MLS (multi-layer steel) headgasket and ARP head bolts or studs.
Here are some engine numbers for comparison
20R, 2.2L, 90 HP@4800, 122 Ft-Lbs@2400
22R, 2.4L, 96 HP@4800, 129 Ft-Lbs@2800
22RE, 2.4L, 112 HP@4600, 142 Ft-Lbs@3400
22RTE, 2.4L, 135 HP@4800, 173 Ft-Lbs@2800, 6psi
20R/22R Hybrid, Estimated 135-155 HP depending on build
2RZFE, 2.4L, 142 HP@5000, 160 Ft-Lbs@4000
3RZFE, 2.7L, 150 HP@4800, 177 Ft-Lbs@4000
3VZ-E, 3.0L, 150 HP@4800, 180 Ft-Lbs@3400
5VZ-FE,3.4L, 190 HP@4800, 220 Ft-Lbs@3600
5M-GE, 2.7L, 143 HP@5200, 154 Ft-Lbs@4400
7M-GE, 3.0L, 199 HP@6000, 188 Ft-Lbs@3600
7M-GTE,3.0L, 232 HP@5600, 254 Ft-Lbs@3200, 5psi
Since everyone is considering fuel economy these days, I'll also say that my 22RE before the swap got 20mpg and I recently got 19.5 mpg highway cruising 80mph with the 7MGE (15mpg on the trails in Big Bear) - that's with 4.56 gears and 32" tires/no lift.
I spent ~ 3 months researching this swap during down time at work and several more months searching for parts in Junkyards. This swap could also be done by buying a running Supra. The engine I got from a JDM importer for $375 off ebay (I picked it up in person to avoid shipping). Total cost for the entire project was less than $1k (can't beat junkyard prices). The entire swap took me about 2 -3 days once I had all the parts together, however I've since tweaked and changed a few things here and there after driving it awhile. The biggest obstacle is fitting a large enough radiator that will still allow for an electric fan, a lesser problem is exhaust routing since it needs to cross over form the passenger side to join the rest of the exhaust on the driver side.
The majority of my research came from SupraCharged.com and the write-up that I liked best came from Andrew Hulse's 1st gen 4runner swap.
1G 4runner swap pg 1
1G 4runner swap pg 2
1G 4runner swap pg 3
Here's the thread 4RnrRick had when he swapped in a 7M 4RnrRick's swap thread, though he concluded he would have been happier with a 3.4 swap (pics are all gone)
The write-ups above go through the actual install fairly well, so I'll try to avoid repeating too much. What you'll need to get the 7MGE bolted in:
- Supra bellhousing, clutch fork & throwout bearing retaining spring, clutch slave cylinder & hose - Supra's used a "W" series transmission which uses the same bellhousing-trans bolt pattern as the "W" series truck trans - you will use your stock "W" series trans and transfer case - use a pre '89 bellhousing, after this Toyota changed the clutch and pressure plate design, pre '89 is the standard "fork and throwout" style
- 5MGE motor mount brackets - bolt on one position further back on the 7MGE block and allow you to use the stock 22RE rubber engine mounts
- 7MGE Cressida oil pan and oil pump - the Cressida used a front sump oil pan (vs Supra mid sump which interfered with the IFS front diff) which clears the front tie rod perfectly though you do need to remove the steering damper - also the Supra used a mid sump oil pan, so the dipstick needs to be relocated is using a Supra block, there is already a boss to drill through and it's no big deal using a hand held drill, just make sure you use a drill bit the same size as the dipstick tube, brace the tube to a nearby bolt and seal it up with black RTV