Rebuild... Maybe more power? Suggestions plz

Cameroonski · 10-08-2010, 04:19 AM

Quote:

Originally Posted by Grandavi

750.00 gets me a 7MGTE with the Turbo. (that's delivered cost). I cannot do a head gasket repair that cheaply.
Mind you.. having said that.. who knows whats gonna happen with the replacement.. lol

As for subpar turbo.. I wouldn't call the CT26 subpar. it is adequate and does its job nicely. A stock turbo is still a little speed demon. Most of us want more HP simply because we can... on the street.. using a 450 HP Supra for tooling around in is only different in that you can get higher tickets much better.

You can get a complete gasket set, and pistons and rings for less then 300 dollars on ebay... that was just a quick search and i wont be buying it from ebay but its going to be a hell of a lot cheaper then 750.

The difference between n/a and turbo on the first couple years was only about 30 or 40 hp... and given if i buy a stock honda turbo for $100 it wont give me anything amazing, but it does not make since to me to trade what i have for a 7mgte. I may gain some hp, but it is not worth it, and there are other ways to get the same result with what i have for cheaper.

it seems to me like a stock rebuild would be best... and then gear up my differential for some added torque. Top speed isnt important for a street car, and acceleration is fun. my gas mileage will go down, but o well.

Sonyps307 · 10-08-2010, 05:06 AM

I rebuild my 7mge with 20 over and they shaved my head and block some and they use a oem head gasket which up my compression some and i put on a stainless steel header and all new hose and other stuff and a new center force clutch now my car gets up and Goes don't know how much HP it has intill I get it dynoed next I will like to get a 3" exhaust with no cat and a turbo later down the road since I have turbo'd forged pistons and rods and crank In it now

Sonyps307 · 10-08-2010, 05:13 AM

Also my turbo pistons r dished for a turbo but the compression on them r 9:1 and the 7mge stock compression is 9.1:1 Wiseco makes them

Grandavi · 10-08-2010, 01:47 PM

Quote:

Originally Posted by dave

would you tell the best place to get a 7mgte to replace mine that is knocking like a you know what

I could tell you where if you were in Calgary, but not in the states. Pretty sure that there are places like here though that carry them. The ones here I believe are shipped in from Japan and can have from 60k - 80k on them (or who knows really.. haven't really researched it heavy enough yet as it is via warehouse. there may be a dog waiting to bite me for that too if I go that route)

Quote:

Originally Posted by Cameroonski

You can get a complete gasket set, and pistons and rings for less then 300 dollars on ebay... that was just a quick search and i wont be buying it from ebay but its going to be a hell of a lot cheaper then 750.

The difference between n/a and turbo on the first couple years was only about 30 or 40 hp... and given if i buy a stock honda turbo for $100 it wont give me anything amazing, but it does not make since to me to trade what i have for a 7mgte. I may gain some hp, but it is not worth it, and there are other ways to get the same result with what i have for cheaper.

it seems to me like a stock rebuild would be best... and then gear up my differential for some added torque. Top speed isnt important for a street car, and acceleration is fun. my gas mileage will go down, but o well.

If you are redoing the head gasket, you should lap the block as well. There are more things to consider then simply redoing the head gasket when you get to that point. I am not a mechanic, so I dont like arguing the point, but I doubt I could redo my head gasket for 750.00 when all is said and done. But that would all probably depend on what you have for tools/time and mechanical ability.

Again, I am not a mechanic, so I could be totally wrong.. although I havent found a way to do it cheaply and properly.

Cameroonski · 10-09-2010, 04:44 AM

Lapping the block may be a good idea. And as far as more then just the head gasket, thats what im trying to figure out. I got the pistons and cranked pulled and everything is already disassembled, so it is a matter of taking measuremeants and finding out what needs to be done. but im still looking for the best option for the cheapest price.

The price here is in parts.. unless im getting it bored or something else that requires tools and knowledge that i certainly do not have. So lets have some more suggestions based on that. : )

Sonyps307, thank you for the info. Ill keep that in mind.

907mge · 10-09-2010, 11:40 PM

You may think a 7mge has potential but it doesn't. I have put too much money into it to upgrade it for a few more hp. My friend has a 88 with a stock 7mgte in it and driving it makes me realize how slow mine is. Once boost hits, it pulsl far far harder, and what you forget is that a gte has a good deal more torque.

Cameroonski · 10-09-2010, 11:45 PM

Quote:

Originally Posted by 907mge

You may think a 7mge has potential but it doesn't. I have put too much money into it to upgrade it for a few more hp. My friend has a 88 with a stock 7mgte in it and driving it makes me realize how slow mine is. Once boost hits, it pulsl far far harder, and what you forget is that a gte has a good deal more torque.

okay... so what is different about it? why does it have more torque? why would it be any different from putting a different turbo on a 7mge? Im simply curious why a 7mgte is so much better then a 7mge when i thought they were the same engine, plus or minus the turbo. Hard evidence would be nice.

907mge · 10-10-2010, 12:06 AM

It is the same block but with lower compression, oil ports for the turbo and a oil squirter for each piston bottom. I personally can't tell you technically why the 7mgte has more torque , but 188 versus 240 is a big difference. The main thing with the gte is potential that a 7mge just will never reach. Installing a turbo on a 7mge has been cover before on here and concluded to be just not worth the hassle or money when a turbo motor already exists.

Grandavi · 10-10-2010, 03:54 AM

Yes, you can pick up a JDM 7MGTE for less than what it would take.

However, keep it in perspective. Not all of us are going to race the car on the streets. I own turbos and will only consider turbos simply because of preference. I like the pull of the turbo, the sound, the status. Other than that, though, the NA Supra is still a very decent car. Sure.. your never going to get as much power out of it, because the turbo itself changes the engine's operation. But if you don't have a turbo, what are you missing? A bit of pull, higher fuel costs, more engine wear and tear and potential.

If you are looking for a fun daily driver that has a nice look, then a NA still fits the bill.

I personally have seen a lot of MKIII's that I liked but walked away from because
1. they didn't have a targa top (that is my top priority.. I like it)
2. they didnt have the turbo (I want to play....)

However, you still have a nice car without the turbo or targa. its all personal preference really... and what your goal is with the car. (hell.. some of us would probably be better off with a truck!) Just dont go expecting 300+ HP out of a NA.. I dont think it can be done.

If you are like me and didnt have a clue what a turbo actually does, its the difference between sucking your coke up through a straw or having someone blow it into your mouth. A NA sucks air.. a turbo pushes. Makes a lot of difference when you think that normally air is about .01 lbs per cubic foot and we are pushing 4-12 lbs of air into a piston with our turbos (depending on setup.. some go higher). NA motors are not setup to take the extra workload as stock.. and I have never heard anyone do anything but warn you about trying to add the turbo without major mods.

10-10-2010, 03:54 AM	#9
Grandavi walbro fp Join Date: Jul 2008 Location: Calgary, Alberta, Canada Posts: 411	Yes, you can pick up a JDM 7MGTE for less than what it would take. However, keep it in perspective. Not all of us are going to race the car on the streets. I own turbos and will only consider turbos simply because of preference. I like the pull of the turbo, the sound, the status. Other than that, though, the NA Supra is still a very decent car. Sure.. your never going to get as much power out of it, because the turbo itself changes the engine's operation. But if you don't have a turbo, what are you missing? A bit of pull, higher fuel costs, more engine wear and tear and potential. If you are looking for a fun daily driver that has a nice look, then a NA still fits the bill. I personally have seen a lot of MKIII's that I liked but walked away from because 1. they didn't have a targa top (that is my top priority.. I like it) 2. they didnt have the turbo (I want to play....) However, you still have a nice car without the turbo or targa. its all personal preference really... and what your goal is with the car. (hell.. some of us would probably be better off with a truck!) Just dont go expecting 300+ HP out of a NA.. I dont think it can be done. If you are like me and didnt have a clue what a turbo actually does, its the difference between sucking your coke up through a straw or having someone blow it into your mouth. A NA sucks air.. a turbo pushes. Makes a lot of difference when you think that normally air is about .01 lbs per cubic foot and we are pushing 4-12 lbs of air into a piston with our turbos (depending on setup.. some go higher). NA motors are not setup to take the extra workload as stock.. and I have never heard anyone do anything but warn you about trying to add the turbo without major mods. __________________ My Links: What I am doing... http://www.toyota-supra.info/forums/...part-list.html My questions http://www.toyota-supra.info/forums/...w-answers.html Last edited by Grandavi; 10-10-2010 at 03:57 AM.

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10-08-2010, 05:06 AM	#2
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	I rebuild my 7mge with 20 over and they shaved my head and block some and they use a oem head gasket which up my compression some and i put on a stainless steel header and all new hose and other stuff and a new center force clutch now my car gets up and Goes don't know how much HP it has intill I get it dynoed next I will like to get a 3" exhaust with no cat and a turbo later down the road since I have turbo'd forged pistons and rods and crank In it now

10-08-2010, 05:13 AM	#3
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	Also my turbo pistons r dished for a turbo but the compression on them r 9:1 and the 7mge stock compression is 9.1:1 Wiseco makes them

10-09-2010, 04:44 AM	#5
Cameroonski 3" Exhaust Join Date: Dec 2009 Location: Austin, Tx Posts: 68	Lapping the block may be a good idea. And as far as more then just the head gasket, thats what im trying to figure out. I got the pistons and cranked pulled and everything is already disassembled, so it is a matter of taking measuremeants and finding out what needs to be done. but im still looking for the best option for the cheapest price. The price here is in parts.. unless im getting it bored or something else that requires tools and knowledge that i certainly do not have. So lets have some more suggestions based on that. : ) Sonyps307, thank you for the info. Ill keep that in mind.

10-09-2010, 11:40 PM	#6
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	You may think a 7mge has potential but it doesn't. I have put too much money into it to upgrade it for a few more hp. My friend has a 88 with a stock 7mgte in it and driving it makes me realize how slow mine is. Once boost hits, it pulsl far far harder, and what you forget is that a gte has a good deal more torque.

10-10-2010, 12:06 AM	#8
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	It is the same block but with lower compression, oil ports for the turbo and a oil squirter for each piston bottom. I personally can't tell you technically why the 7mgte has more torque , but 188 versus 240 is a big difference. The main thing with the gte is potential that a 7mge just will never reach. Installing a turbo on a 7mge has been cover before on here and concluded to be just not worth the hassle or money when a turbo motor already exists.