7mge hp increase info

zby67 · 10-22-2010, 08:02 AM

ok that makes alot of sense and opens my eyes to the reasons why everyone says the GE is a money pit. wish this was posted sooner instead of me going out and finding mods i want to do lol. im guessing if i go with a 1JZ or 2JZ i cant use the trans i have? what is required for the conversion? and with the 7M-GTE will bolt onto my auto trans would be most effective. just get oil cooler and intercool. what else is required? cause at suprastore they give you just about everything you need. before i was just looking to make my supra look kick ass with balls to back it up with out going over board. which is why i figured just rebuild bore over .20 shave head .10 and add MHG with afew other mods. and go balls to the wall when i find a 1990 supra with the GTE and R154 trans. but with a engine gasket hit with pistons and new oil pump being like 400-500. and all the mods i want to do = total of 9k-10k with out even touching the body with body restore im looking 2-3k if not alittle more. also would adding this eather the steel or aluminum help and by how much? http://www.horsepowerfreaks.com/part...veshafts//5545

zby67 · 10-22-2010, 09:12 AM

ok ditch doing a 1JZ-2JZ ill just do a GTE. or hold off and see if the GE will last till i find the 90. cause i have 2 GE's one runs the other want to fire but wont. my guess bHG all fluids were black... nice... anyway im pulling the engine this sunday and taring it apart is my winter project. and i just might just do a rebuild keep it as is after that. or well taking the engine apart figure out what the hell i want to do lol....

907mge · 10-22-2010, 09:49 PM

I'd just take your time and rebuild the 7mge. You can do port and polish work on the head yourself to help with flow as well as port match everything. I think you will be suprised on how much pep you can bring back. Supra Sport also has some pretty good stuff.

All I was trying to say with this is that a 300hp 7mge could be possible but not without investing a good deal of money. Probably for the same amount you could double the hp with a 7mgte.

zby67 · 10-23-2010, 05:17 AM

Quote:

Originally Posted by 907mge

I'd just take your time and rebuild the 7mge. You can do port and polish work on the head yourself to help with flow as well as port match everything. I think you will be suprised on how much pep you can bring back. Supra Sport also has some pretty good stuff.

All I was trying to say with this is that a 300hp 7mge could be possible but not without investing a good deal of money. Probably for the same amount you could double the hp with a 7mgte.

yeah iv checked out supra sport nice site though parts i need they dont have lol. also how would you do a port and polish yourself? i know i dont have the tools for that lol. but ill be rebuilding the GE cost less then doing a convertion and i would rather find a 90 with one it it and a R154 trans. less headache lol

907mge · 10-23-2010, 11:27 PM

To do a p&p job you will have to remove the valves from the head. You can really get into it and remove alot of metal which you have to be careful with or you can just do a good clean and smooth it out job. You will find the exhaust ports to be lined with carbon and the intake ports lined with residue from the pcv. Actually the whole intake will be coated from the pcv. There are videos on youtube of p&p ing but most of them are on big v8s that have much bigger ports. On the 7m the ports are much smaller and harder to work on. On mine I tried to do it myself and got sick of it and had the guy at the machine shop do it for me. He spent about 4 hours grinding away as well as a valve job and reshiming for $500.

zby67 · 10-24-2010, 05:37 AM

Quote:

Originally Posted by 907mge

To do a p&p job you will have to remove the valves from the head. You can really get into it and remove alot of metal which you have to be careful with or you can just do a good clean and smooth it out job. You will find the exhaust ports to be lined with carbon and the intake ports lined with residue from the pcv. Actually the whole intake will be coated from the pcv. There are videos on youtube of p&p ing but most of them are on big v8s that have much bigger ports. On the 7m the ports are much smaller and harder to work on. On mine I tried to do it myself and got sick of it and had the guy at the machine shop do it for me. He spent about 4 hours grinding away as well as a valve job and reshiming for $500.

how thats fairly cheep! but yeah ill be doing a complete overhaul of the engine so everything comes out and new gets put back in. easyer said then done plus i the work on the head and block. hope this goes smother then what im thinking it will lol. wont know till i try. and i will be asking questions cause the haynes repair manual i has gives more info in the 5M's and basicly skips over the 86.5 and 87's and then gos directly to the 89-92 7m-GTE witch are similar but still. ill be using Cygnus X1 witch as everyone has said the holy bible to the supra's! lol

907mge · 10-24-2010, 04:07 PM

Yeah for me the previous owner included a tsrm for me which is nice. Just remember the following for the head gasket:

A metal headgasket is way overkill for a na

Use copper spray by permatex on the gasket before install

Chase the threads to insure accurate torque readings

The factory head bolts can be reused but I went with arp headstuds for extra reasurance.

Retorquing after a few heat cycles never hurts to be sure

10-22-2010, 08:02 AM	#1
zby67 3" Exhaust Join Date: Aug 2010 Location: Moving Posts: 85	ok that makes alot of sense and opens my eyes to the reasons why everyone says the GE is a money pit. wish this was posted sooner instead of me going out and finding mods i want to do lol. im guessing if i go with a 1JZ or 2JZ i cant use the trans i have? what is required for the conversion? and with the 7M-GTE will bolt onto my auto trans would be most effective. just get oil cooler and intercool. what else is required? cause at suprastore they give you just about everything you need. before i was just looking to make my supra look kick ass with balls to back it up with out going over board. which is why i figured just rebuild bore over .20 shave head .10 and add MHG with afew other mods. and go balls to the wall when i find a 1990 supra with the GTE and R154 trans. but with a engine gasket hit with pistons and new oil pump being like 400-500. and all the mods i want to do = total of 9k-10k with out even touching the body with body restore im looking 2-3k if not alittle more. also would adding this eather the steel or aluminum help and by how much? http://www.horsepowerfreaks.com/part...veshafts//5545 __________________ 1986.5 MA70 7M-GE 1987 MA70 7M-GE

10-22-2010, 09:12 AM	#2
zby67 3" Exhaust Join Date: Aug 2010 Location: Moving Posts: 85	ok ditch doing a 1JZ-2JZ ill just do a GTE. or hold off and see if the GE will last till i find the 90. cause i have 2 GE's one runs the other want to fire but wont. my guess bHG all fluids were black... nice... anyway im pulling the engine this sunday and taring it apart is my winter project. and i just might just do a rebuild keep it as is after that. or well taking the engine apart figure out what the hell i want to do lol.... __________________ 1986.5 MA70 7M-GE 1987 MA70 7M-GE

10-22-2010, 09:49 PM	#3
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	I'd just take your time and rebuild the 7mge. You can do port and polish work on the head yourself to help with flow as well as port match everything. I think you will be suprised on how much pep you can bring back. Supra Sport also has some pretty good stuff. All I was trying to say with this is that a 300hp 7mge could be possible but not without investing a good deal of money. Probably for the same amount you could double the hp with a 7mgte. Last edited by 907mge; 10-22-2010 at 09:52 PM.

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10-23-2010, 11:27 PM	#5
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	To do a p&p job you will have to remove the valves from the head. You can really get into it and remove alot of metal which you have to be careful with or you can just do a good clean and smooth it out job. You will find the exhaust ports to be lined with carbon and the intake ports lined with residue from the pcv. Actually the whole intake will be coated from the pcv. There are videos on youtube of p&p ing but most of them are on big v8s that have much bigger ports. On the 7m the ports are much smaller and harder to work on. On mine I tried to do it myself and got sick of it and had the guy at the machine shop do it for me. He spent about 4 hours grinding away as well as a valve job and reshiming for $500.

10-24-2010, 04:07 PM	#7
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	Yeah for me the previous owner included a tsrm for me which is nice. Just remember the following for the head gasket: A metal headgasket is way overkill for a na Use copper spray by permatex on the gasket before install Chase the threads to insure accurate torque readings The factory head bolts can be reused but I went with arp headstuds for extra reasurance. Retorquing after a few heat cycles never hurts to be sure