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How should i start my build

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natural laser

10+ Year Contributor
34
0
Oct 8, 2011
Spokane, Washington
I recently purchased my first dsm, 91 plymouth laser rs. It is the non turbo 2.0 but i wanted a project so im looking to first build up the engine then consider going from n/a to a turbo. I was thinking to start bigger injectors, new fuel pump, new cam, bore it out a bit, bigger forged pistons and rods, possibly new clutch and flywheel, then when i went for the turbo a new exhast manifold and whole new intake. I do know a decent bit but ill admit I still have plenty to learn and cant wait to. Just looking for tips on which i should start with, what i should look into, anything im missing from above, and any general help is appreciated. I'm looking to get around 400 fwhp out of it. Enough to be tolerable and smack my friends ;) all advice is welcome, thank you.
 
If you plan on going turbo. I would start saving up for that first then once its turbo worry about other upgrades.
 
I recently purchased my first dsm, 91 plymouth laser rs. It is the non turbo 2.0 but i wanted a project so im looking to first build up the engine then consider going from n/a to a turbo.
Sounds like a good plan, you should put in some beefier rods and turbo pistons. The only difference with turbo pistons is generally a lower compression ratio and the ring lands are lower on the piston. Also note that the crank shaft doesn't need replaced unless you are stroking, it's damaged/needs too much turning, or just for some reason want a new one.

natural laser said:
I was thinking to start bigger injectors, new fuel pump, new cam, bore it out a bit, bigger forged pistons and rods, possibly new clutch and flywheel, then when i went for the turbo a new exhast manifold and whole new intake.
You seems to be all over the place with this and have no guide lines at all for how you should approach this.

Tech Guide: 1G 4G63 N/T Upgrades - DSMtuners

-Boring it out, this is not a Chevy Big Block or anything like that, there is no boring. The only boring you will do is going the next size up in pistons to have a perfect matching cylinder to piston clearance. If you are on stock pistons, bore out 20 thousandths.

-Clutch and flywheel is an excellent choice to do. You will be making more power and you'll need a better clutch to prevent slippage.

-Fuel mods...If you want a larger pump now, you'll want an adjustable fuel pressure regulator to maintain proper fuel pressure. You CANNOT put in larger injectors until you get a proper tuning solution.
http://www.dsmtuners.com/forums/articles-tuning-ecu/406033-tuning-solutions-you.html


-Intake, you should be able to fit the proper intake manifold on prior to the turbo unless it's a massive IM which will kill your power band without the proper sized turbo to use it. Same with cams, they are unneeded unless you are moving the power band to the efficiency range of the turbo.

natural laser said:
I do know a decent bit but ill admit I still have plenty to learn and cant wait to. Just looking for tips on which i should start with, what i should look into, anything im missing from above, and any general help is appreciated. I'm looking to get around 400 fwhp out of it. Enough to be tolerable and smack my friends ;) all advice is welcome, thank you.

I hope that is solely at the track...

You need to read up on the forums and figure out how everything works and specifically what each part does and when you should be utilizing it/installing it.
http://www.dsmtuners.com/forums/1g-n-t-tech/157911-how-turbo-your-1st-gen-2-0-nt.html
http://www.dsmtuners.com/forums/1g-n-t-tech/55457-installing-turbo-4g63-into-nt-4g63.html

I'm sure searching you can come up with much more information :)


If you plan on going turbo. I would start saving up for that first then once its turbo worry about other upgrades.
The turbo should be the last or one of the last installs AFTER all the supporting mods have been done.
 
liquid thank you very much, i know some of my info was kinda off haha. not to say im only a senior in high school and just got into the dsm world but i knew i would want to get the supporting stuff before i got the turbo, unlike the guy who posted above you haha. Also very helpful links. I appreciate it.
 
Well if your a senior in high school, I have to say welcome to the DSM world, and I hope you have a good paying job to support this car with. This car will become like a child to you, and not because you love it so much, but more because its costs about as much to upkeep at first. Infact I probably spend less on child support than i do this car right now. HAHAHA Just kidding I dont have child support, but I do have a new baby, and this car costs as much.

I bought mine off a high school kid because he had no idea what he was getting himself into. About 500 bux later, im just starting to get this car running properly, and im still trying to get it all sorted out from the corners that were cut by previous owners.

Congrats on your purchase into the DSM world, but if your going to add boost to your car as stated before, start with the internals and work out from there. As low quality internals will break, not enough fuel will destroy an engine, and improper monitoring of the engine can hurt it too.

I would start on internals and rebuild the entire engine. Using ARP's all the way around. Mains, rods, head studs. You may not need them, but its for piece of mind more than anything. Replace the rods and pistons because you want 400whp and face it, stock wont hold up to that forever. I always suggest MHG's but thats personal preference. Then move to your fuel system. 255lph pump or larger, larger injectors 550cc + and then an AFPR. You can swap in a fuel rail too if your really feeling froggy, but not really needed.

Next you should be OK with your intake, but think about your air metering. Are you planning to run MAF, Speed density or some other form? Are you planning to use a chipped eprom, dsmlink or what to tune the ECU? What are you going to use to monitor your engine with all the new parts? Gauges and loggers and so forth?

Next your going to move onto your exhaust system and turbo system. I put these together because you have to replace your stock exhaust mani with a turbo mani and a new exhaust too. Are you going to run a 1g turbo mani, 2g mani, tubular mani? Are you going to run an internal waste gate, external wastegate? What sized exhaust are you planning to run? What sized turbo do u plan to run? How much air volume do u plan to pump into that engine? Please note I did not ask how many PSI you are planning to run, because PSI and volume getting into the engine are not the same, and the PSI means very little. But thats a different story all together.

All in all I think you should sit down and figure out how much you can afford to spend, and how much all this will cost you, and then figure out if you can afford to do all this. Being in high school means you are likely not going to be able to afford the parts list without using ebay, and those parts are likely going to be a lower quality which is why they are a lower price too. Just food for thought for you. No point to see someone get in over their head and either break their bank or their hopes and dreams on something thats unrealistic on their current budget.
 
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