I am wondering if I can put 9.6:1 compression n/t 2g pistons in my 1g and get a high pressure MLS metal head gasket and be able to run 300hp with the 14b turbo in putting in. Probably only run about 250hp daily and 300 at the track but I still want it to be safe more then anything. I want to stay at high compression if I can because It will reduce my boost PSI that I need by about half...Think about the spool time here. Should but my 1/4 mile time considerably with less spool time. Also, the highest octane gas they sell out here is 91 =/

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

9.6:1 will be a disaster to tune. Honestly. People have run 11's and ALOT of people run 12's on the 14b with stock compression.

I cannot imagine what a nightmare tuning 9.6:1 would be. Any tiny bit out of tune and you'd be getting knock counts of 50.

Rule of thumb is that turbo cars love low compression, and you generally want the turbo to do all the work. I almost made the mistake of getting 9.0:1 compression pistons for my rebuild, but went with 8.3 instead.

It's running again shitheads.

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Think for yourself. Question authority does not always mean disagree with authority.

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Wait you want to put 2g n/t pistons in your 1g non-turbo? So you want to put 420a pistons in your 4g63?

I'm confused.

Edit: I also for got to mention that 420A pistons have a different bore than the 4G63. You'd have to pull the engine to get it overbored and chances are, that over bore wuold make your cylinder walls far too thin. A .060" over 4G63 pistons is still only 86.5 mm. That and NT pistons aren't designed to hold boost. There are a ton of reasons why you won't want to do this.

4G63 = 85 mm or 3.346"
420A = 87.5 mm or 3.445"

It's running again shitheads.

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HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

420a pistons just won't work in the 4g63. End of discussion.

If you are going through the mess of turboing a non-turbo 4g63, just pick up a turbo engine. You will spend a lot less money for a whole lot more power. You will also be paying for reliability.

I hate to do this, but do some more research before you try to take this project on. It sounds a little bit like you are flying by the seat of your pants here. There are alot of intricacies in doing what you are trying to do, so really it's not as simple as just asking us what you need to do. I'm sorry to do this, but I really can't see it being done without alot of knowledge on your part.

9.0:1 is also very high for forced induction engines. I'm guessing to get to the magic 300 number with 9:1 compression, it would take in the neighborhood of 17-20 PSI, but that is a total guess.

Go to dsmtuners and read through their upgrade paths and you'll get a better idea of what you need to do to "just run more boost". It's not as simple as just getting an MBC and turning it up to 22 PSI.

Also, as Jeff said before me, get a turbo engine. They are designed for boost, so don't screw around turboing a non-turbo.

It's running again shitheads.

http://www.dsmregistry.com/detail.php?carid=791

HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

I have 9.0:1 compression. Matt shut up !!




www.cnnmotorsports.com

Originally posted by Remy
I have 9.0:1 compression. Matt shut up !! www.cnnmotorsports.com

It's running again shitheads.

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HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

Im talking 9.0:1 JE Forged Pistons.....
and please don't tell me to do reseearch. I researched all yesterday and even found that 420a turbo kits can put out 280hp it seems...

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

It's running again shitheads.

http://www.dsmregistry.com/detail.php?carid=791

HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

At 17 to 21psi boost , I've seen cars with 9:1 cr hit about 350whp with a decent turbo on da dyno. This is awd, but same difference.

Its gonna cost you around $500 to $600 for internals (2G 4G63 pistons, 1G turbo rods and some gaskets and rings/bearings).

Forged pistons are like $500. rods; around the same or more.

$500 for machine shop to rebuild the block.

Possibly $500 to $1000 for a shop to take it out and throw it back in after the blocks rebuilt. (unless you plan to do it yourself).

This is also minus all the other costs for manifold, oil and fuel lines, turbo, exhaust yada yada...

also, youre gonna want a datalogger to check for knock and other crap.

what the hell is this thread about? you do know that the 1gnt has the mitsubishi motor and the 2gnt has the chrysler motor right?

as far as boosting the 1gnt 2.0 i would imagine all he would need are new pistons , rods, and ecu if he is just gonna run a 14b on it

______________________________________

11.65 @ 115

Sorry I didn't realize that the 2g pistons were a different size then 4g63 ones. I guess I wasnt thinking that part. I still think its a legitimate question though that these turbo kits seem to be able to make 280hp safely on 9.7:1 compression on the 420a...Why is that?

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

its a different fucking engine. different block and fuel peramiters. its a completely different engine, and if you wanted to you would have to run your own custom engine management system and fuel system, managing timing and most of all you would have to swap blocks with a turbo. you dont have the experience or funds needed to run hi compression

______________________________________

11.65 @ 115

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

ok its not better but it has a different rate. your trying to mix apples and oranges and make lemonade and its not gonna happen. lets see there are people with 14bs getting over 300hp where as it would take a stage 3++ 2gnt running a 20g to come close to that. ok its not better its different. the main reason you dont want to run high compression is IT IS BAD FOR THE MOTOR. the 2gnt wasnt built to be turbo so naturally it has a higher compression like the pistons in your 1gnt, but because of the cam timing and a whole shit load of other things running high compression on your stock bottom end that has over 100k miles is stupid. you will have to spend more in the long run, make your own fuel settings and cam timing. where as a turbo 2gnt usually comes with its own fuel system.

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11.65 @ 115

This thread is silly.

420a = 2nd generation NON-TURBO engine.

4G63 = 1st and 2nd generation TURBO engine.
4G63 = also 1st generation NON-TURBO engine. However, it is very much entirely different than the turbo model on numerous levels. Matt was right. You need to do a LOT more research.


Read this: http://www.dsmtalk.com/forums/showthread.php?s=&threadid=25241

Here is your parts list:

-throttle body
-throttle body elbow
-tap a hose barb into the intake manifold (for BOV line)
-uic hose
-lower ic hose
-stock sidemount ic
-turbo intake cam (at or mt depending on your tranny, exhaust cams are the same)
-stock 1g exhaust manifold
-stock 1g downpipe
-14b turbo
-stock 1g o2 sensor housing
-turbo ecu + wiring harness (the ecu plugs for the turbo ecu and several connectors for the mas, fpr solenoid, knock sensor and injector resistor pack)
-450cc stock turbo injectors
-turbo fuel pump
-turbo mas
-upgraded clutch if you have mt (act 2100 at least)
-turbo fwd oil pan
-knock sensor
-injector resistor pack
-all lines to connect turbo to water source off the head (turbotrix)
-all oil lines for the turbo (can be bought from turbotrix)
-new head gasket
-timing belt change
-rods, pistons & rings from a 6 or 7 bolt engine (depending what year your car is)
-block rework & head rework
-fuel pressure solenoid
-knock sensor
-new o2 sensor
-turbo mas (if getting a 2g mas then you need to do the 2g mas conversion)

______________________________________________________
2003.5 M3
99 M3
99 GST

In short: Some engines are made for boost, and some are not. If you try to boost an non-boost oriented engine, you are basically wasting your time if you are really serious about speed.

It's running again shitheads.

http://www.dsmregistry.com/detail.php?carid=791

HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

----------------------------------------

I used to have a 420A...


'92 TSi AWD

11.8 @ 119mph
470awhp 405 ft/lb torque
30psi on E85 w/ Borg Warner S256 Turbo

My DSM Registry: http://www.dsmregistry.com/166

Im using the conversion on vfaq (http://www.angelfire.com/il2/freestyle/turboconversion.html)
and after that using the Stage 1 Performance Mods in the tuning guide on dsmtuners.

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

__________________________________________________________
-Tony <--- NOT asian.
'06 Wicked White EVO IX

Buy the fucking 4G63T engine and get it over with. It's more reliable, cheaper, easier, and better. There is no better combination.

It's running again shitheads.

http://www.dsmregistry.com/detail.php?carid=791

HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

__________________________________________________________
-Tony <--- NOT asian.
'06 Wicked White EVO IX

Originally posted by eclipzGST

Originally posted by HybriDSM Buy the fucking 4G63T engine and get it over with. It's more reliable, cheaper, easier, and better. There is no better combination.

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

We aren't saying sell the NT and get an entirely different car. We are saying get a turbo engine and swap it in instead of turboing the NT engine. Trying to turbo the NT will cost you more, be less reliable, be slower, and won't be nearly as efficient as getting the turbo engine as one assembly.

Your car is in great shape and noone would tell you to sell the car. But for heaven's sake, please don't spend all you time and money turboing the NT engine.

In the thread Jeff linked above from tuners, it has, at the bottom, instructions on swapping a 4G63T into an NT 1G car. That is the option we are suggesting.

Also:

Originally posted by burntheblobs

Originally posted by eclipzGST

Originally posted by HybriDSM Buy the fucking 4G63T engine and get it over with. It's more reliable, cheaper, easier, and better. There is no better combination.

Why do people always say just buy the turbo model because its easier?

It's running again shitheads.

http://www.dsmregistry.com/detail.php?carid=791

HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.

Originally posted by HybriDSM
We aren't saying sell the NT and get an entirely different car. We are saying get a turbo engine and swap it in instead of turboing the NT engine. Trying to turbo the NT will cost you more, be less reliable, be slower, and won't be nearly as efficient as getting the turbo engine as one assembly. Your car is in great shape and noone would tell you to sell the car. But for heaven's sake, please don't spend all you time and money turboing the NT engine. In the thread Jeff linked above from tuners, it has, at the bottom, instructions on swapping a 4G63T into an NT 1G car. That is the option we are suggesting. Also:

Originally posted by burntheblobs

Originally posted by eclipzGST

Originally posted by HybriDSM Buy the fucking 4G63T engine and get it over with. It's more reliable, cheaper, easier, and better. There is no better combination.

Why do people always say just buy the turbo model because its easier?

Because it is. I'm trying to be helpful here and save you time and money (and alot of both I might add) so please don't take me to be an asshole. I'm just trying to help.

1991 Mitsubishi Eclipse GSX - SOLD
2006 Mustang GT Convertible

Originally posted by burntheblobs

Originally posted by HybriDSM We aren't saying sell the NT and get an entirely different car. We are saying get a turbo engine and swap it in instead of turboing the NT engine. Trying to turbo the NT will cost you more, be less reliable, be slower, and won't be nearly as efficient as getting the turbo engine as one assembly. Your car is in great shape and noone would tell you to sell the car. But for heaven's sake, please don't spend all you time and money turboing the NT engine. In the thread Jeff linked above from tuners, it has, at the bottom, instructions on swapping a 4G63T into an NT 1G car. That is the option we are suggesting. Also:

Originally posted by burntheblobs

Originally posted by eclipzGST

Originally posted by HybriDSM Buy the fucking 4G63T engine and get it over with. It's more reliable, cheaper, easier, and better. There is no better combination.

Why do people always say just buy the turbo model because its easier?

Because it is. I'm trying to be helpful here and save you time and money (and alot of both I might add) so please don't take me to be an asshole. I'm just trying to help.

$1440 extra a year on insurance isnt saving me money. O_O. Keep in mind im only making about $150 each week.

It's running again shitheads.

http://www.dsmregistry.com/detail.php?carid=791

HybriDSM@gmail.com ; HybriDSM@hotmail.com

Think for yourself. Question authority does not always mean disagree with authority.

If life were perfect, I'd be Calvin and you'd be Hobbes.