Performance Parts for 7mge

[shoes1382006]

I need to know what performance parts there are avalible for the 7mge. cuz im buyin a 7mge motor to put in my truck! n is there any web sites that have theses parts! n also could i put a turbo on one also!!!

[bgrieger]

intake and exhaust are the normal "upgrades" short of getting into the very expensive realm of internals.

You can turbo it using the CT26 setup from the 7M-GTE. If you want to turbo it anyhow, you'd be better off getting the GTE engine from the start.

[shoes1382006]

yea its just very hard to find a 7mgte motor now a dayz well im gonna be rebuildin the engine is there any good parts that will help and that are cheap like a stroker kit or something like that??

[bgrieger]

There was only one stroker kit I remember being made, and to my knowledge only one person ever got it up and running, and that was short lived, though I think a few people purchased it. There are problems stroking the 7M as it is already a stroked 2.8...the Toyota 5M was stroked to make the block for the 6M, which was tweaked a little with a new head to create the 7M. You really start to push the clearances with the kit, and for the life of me I can't even remember if they still sell it. It was a performance shop in NY that designed it if I remember right.

You also have to throw down a couple of grand for the kit plus extensive machine work beyond a normal rebuild to clearance for the longer rods, and the largest displacement you end up with is 3.2L on the ragged edge of keeping the pistons in their bore and out of the oil pan. BTW, the stroked 7M is estimated in NA form to put down at very best 300hp...turning up the boost on a 7M GTE stock will get you there...

[shoes1382006]

yea this place called the supra store says they have them! N i just really want to get as much hp as i can out of the engine! now im not to sure how much hp i could get out of this engine? hopefully 500hp?? yea i planin on tryin to find a 7mgte! also could possibly twin turbo this motor also???

[bgrieger]

You could twin turbo the 7M, and it would be a cool and unique thing, but the costs are high (ask me how I know) and the benefits are not nearly what they were say 5 years back with the modern ball bearing turbos. Sure a ball bearing to ball bearing comparison, the twins still offer a wider power band, but the gap substantially closed compared to the journal bearing designs, making the benefit negligible. If I wasn't as far into my twin setup as I am I'd probably save the pennies and go single at this point.

[shoes1382006]

what about this stroker kit is it liget? or what?

[bgrieger]

First, I'm not trying to poo-poo on your idea. I'd like you to consider the downsides of the stroker. I loved the concept when it was developed perhaps 3-5 years back, and almost signed on as soon as it was available. I'm now glad I didn't. Still very cool, but fails to meet my needs, and has never been proven.

Stroking the already stroked motor is risky, and for what benefit...8-10% more power, bringing the power levels up to a respectable 220 or so horses without any other mods. For $1.50, I can get a couple of washers from a hardware store, shim the wastegate of a GTE, and increase peak power by 20 to 25% to somewhere near 280, and never have to worry about a breakdown if the head gasket is a good one and torqued properly. This is all on stock fuel, stock engine management, stock for the works, though the exuahst is too restrictive at this point and really the car would benefit from that being replaced...but I digress, it's still a proven formula. I've personally known many of these $1.50 modded supras that have run that way for 10 years or more without beginning to complain. My engine and my parts cars engines were exactly this case, and there are a few other local owners that have done the same thing. The added stresses from the wrist pins being so far out of alignment, the fact that you need to go to the max overbore, and notch the piston walls to clearance for the rods says to me there is reliability issues coming. That and as far as I know nobody from those that did buy strokers has a working one yet, or one that continued to run for long.

I just didn't see the bang for the buck potential. I still think it is a pretty cool concept, but this is not for the daily driver, and I don't see the value normally aspirated. For the extra perhaps $250 that a turbo longblock and turbo go for, I think you'd be miles ahead.

To find engines, check the for sale areas for Supramania.com and supraforums.com. Guys are always parting cars, and some will likely be near to you.

Bob

[shoes1382006]

thanxs man! im just really want get the most out of this engine! cuz i was think either doing a 5vz or 7mgte in my truck! but seeing how i live in cali i would hafta go with the 7mgte! do you anyother mods or parts that could help! cuz once again i jsut wanna get the most! cuz i want this engine to at least have 350 to 400hp! is that possible with this motor or is that only with the 1jz n 2jz! n what year did the 1jz come out?

[bgrieger]

All 3 engines will make that power given the right build. The 2j is 300 and change right out of the box. I'm not familiar enough to say if just turning up the boost will crack 400 on the 2j, or whether a turbo upgrade is in order, but 350 should be quite easily donw. The turbos don't like increased boost though, and #2 tends to fail fairly quickly (as I recall, they are putting out 14psi stock). The 1j will definately need a turbo upgrade to get over 400 and remain reliable, though again it might do 350, but reliability of #2 is still an issue. The 7M has been documented to do 350 reliably, and at the edge over 400 with an upgraded CT26, but longevity of the turbo, and overall efficiency is again a problem the higher you reach. At the 350 end, you should be fine for quite a while. In almost every case, a turbo upgrade is in your future to get deep into the range you are looking for.

As to the engines: the 1J was never available in north america, and I think that will be a problem for cali smog folks, but you would know better. It was released in Japan for the 1990 or 1991 cars, though again, I'm not 100% on which year. The 2j was released in 1994 to north america.

[shoes1382006]

so ur sayin if i get the 7mgte up 350 horses she wont last as long? or the turbo wont? i no u could crack up the 2jz engine up to over 1000hp! all i want out of the 7mgte is just an easy 400hp n i would be very happy! n i also hate livin in cali cuz we got the strictest smog regs here! so damn gay! im really unfamilar with turbos now what like ct26? please enlighten me on all the turbo knowledge that u have! cuz i also want to turbo my 3vz so i could put it in my 4wd yota!

[bgrieger]

CT26 - factory Toyota turbocharger on the 7M. A varient is also found on the Celica alltrac and the MR2. CT12A/B, the smaller cousins found in pairs on the twin turbo supras, both 1j and 2j. I can't remember whether the 1j or 2j uses the A or B, but it is one of the 4 possible combinations.

When I say reliability here, I'm talking turbo life. The 7M will do 500 on stock internals if you can feed it enough gasoline. Now, it won't do it on a stock turbo, for that you will need an upgrade, but the engine itself can take it (caveat...I assume you will be putting a metal head gasket in when you build it...anything less will not last). I know nothing of the 3vz, so I cannot comment on what might work with it.

[shoes1382006]

lol thanxs man dont the metal headgaskets cost about 100 buck or sumthin like dat! i no there pretty expensive! and would it be smart to put cams also or even porting the heads??

[bgrieger]

Metal head gaskets are reasonably inexpensive. I can't remember the prices off the top of my head, but something in the mid 100 range sounds right. The real cost is that you need the engine to be machined to install one. The stock Toyota gasket is not cheap by comparison, and will not held the power you are shooting for.

Head porting is a big benefit, and I would do that while you have it off being preped for the headgasket. Cams benefit, but only when you're reaching the power you are talking about having. Lower power 7M's have no need for cams, and gain very little from them. I would recommend the cams be the last things you get. You can make your power requirements without, but they do provide some benefits when you get there. If you think the gaskets are expensive, wait till you price cams.

[shoes1382006]

yea i no the cams would prolly be really expensive! now i was drivin around in my truck yesterday n i love the torque my 3vz has! how much torque would the 7mgte have? cuz i no my mom has an inline 6 volvo n my bro has an inline 6 mustang and there pretty damn slow once u punch it but once it gets up there pretty fast!