My mod list (built 2.5), need opinions.
01-06-2003, 10:17 PM
#16
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Posts: n/a
Hey Nathan!
Yeah, we both are headed for the same goal!
I would definitly get 11:1 compression pistons, there is no real fown side and while the engine is apart, why not chip in and get them? Unless you plan to turbo in the future (ill be VERY dissapointed
)
I should be more specific with the list i posted, there is a 3 angle valve job and a port matched as well as ported/polished intake manifold, thanks nathan, Im losing track of all of it!
I would say you *should* be ok with stock injectors (ill tell you at the end of the month, i cant wait), just a larger fuel pump, but not too large as I had serious tuning problem from being too rich and actually had to put in an SVX fuel pressure regulator to lower the fuel pressure in the rails.
N/A beast: witht he street cams and all of the bolt on power mods listed except nitrous, i was able to pull a 15.1, i wasnt thrilled with it, but it was my first time at the track, my first was a 15.6, then on my 4th or 5th run I got a 15.1. My clutch was slippng during gear changes and so badly with the nitrous i had a .1 second improvement in my time giving me a whopping 15.0 with nitrous. Oh well, I have the ACT now, my old one was definitly shot!
Is the MRT the best choice?? Nathan, I see you have it on your mod list, can you give me a link so I can soo what it looks like/info on it? Thanks in advance and keep me updated on your twil throttle bady design. i working oon mine, but all i have now is an extra throttle body, the gaskets and the perfect sized for the velocity stacks, but they have to be custom. Later everyone!
Dan
Yeah, we both are headed for the same goal!
I would definitly get 11:1 compression pistons, there is no real fown side and while the engine is apart, why not chip in and get them? Unless you plan to turbo in the future (ill be VERY dissapointed
)I should be more specific with the list i posted, there is a 3 angle valve job and a port matched as well as ported/polished intake manifold, thanks nathan, Im losing track of all of it!
I would say you *should* be ok with stock injectors (ill tell you at the end of the month, i cant wait), just a larger fuel pump, but not too large as I had serious tuning problem from being too rich and actually had to put in an SVX fuel pressure regulator to lower the fuel pressure in the rails.
N/A beast: witht he street cams and all of the bolt on power mods listed except nitrous, i was able to pull a 15.1, i wasnt thrilled with it, but it was my first time at the track, my first was a 15.6, then on my 4th or 5th run I got a 15.1. My clutch was slippng during gear changes and so badly with the nitrous i had a .1 second improvement in my time giving me a whopping 15.0 with nitrous. Oh well, I have the ACT now, my old one was definitly shot!
Is the MRT the best choice?? Nathan, I see you have it on your mod list, can you give me a link so I can soo what it looks like/info on it? Thanks in advance and keep me updated on your twil throttle bady design. i working oon mine, but all i have now is an extra throttle body, the gaskets and the perfect sized for the velocity stacks, but they have to be custom. Later everyone!
Dan
01-08-2003, 08:52 AM
#18
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Posts: n/a
Kostamojen,
Thanks fore the link! The first one dosent seem to work for me though. These would be my best bet without spending too much? Do you guys think i will have good benefits from this exhaust/header system? Does it have to bolt to the mrt exhaust system, or can I use my strommung? How is the performance of the mrt full exhaust, any #s? Thanks to anyone who answers a few of there questions.
Dan
Thanks fore the link! The first one dosent seem to work for me though. These would be my best bet without spending too much? Do you guys think i will have good benefits from this exhaust/header system? Does it have to bolt to the mrt exhaust system, or can I use my strommung? How is the performance of the mrt full exhaust, any #s? Thanks to anyone who answers a few of there questions.
Dan
01-08-2003, 01:38 PM
#19
Registered User
Join Date: Nov 2002
Location: Pennsylvania
Posts: 70
Car Info: 1998 Subaru RS 2.5 (soon to be N/A beast)
MRT
From what I've heard, the MRT dynoed very well. It is supposedly one of the best on the market because it is made to work as one flowing unit, instead of having a bunch of pieced together exhausts. I have heard they throw a CEL but it is easily fixed with that $15 wiring fix. It looks like a perfect system if you ask me. Very straight, very smooth, very simple, not too flashy; Just the way it should be to make good power.
01-08-2003, 10:34 PM
#21
NASIOC Slut
iTrader: (2)
Join Date: Nov 2002
Location: Roseville, CA
Posts: 4,723
Car Info: 1995 Subaru Impreza 1.8 L
It would also be more expensive if it were stainless. If it ever gets rusty, just get some naval jelly to remove the rust and repaint it. Cleans up nice.
The MRT system showed a 15hp gain on a stock car. Theres a dyno of it floating around on the old club...
And you can fit the stromung muffler on the exhaust, but not the midpipe. The midpipe length is different. Good thing is that you can order the exhaust with everything BUT the muffler and save some money.
The MRT system showed a 15hp gain on a stock car. Theres a dyno of it floating around on the old club...
And you can fit the stromung muffler on the exhaust, but not the midpipe. The midpipe length is different. Good thing is that you can order the exhaust with everything BUT the muffler and save some money.
01-09-2003, 08:17 AM
#22
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Really? I can use the strommung exhaust on it? Thas really amazing, i diddnt want to get rid or it, its a nice stainless one and its only 4 months old, my other non stainless rusted out in a year and a half. If I get the MRT I would do some kind or rust protectant on it, like a spray protectant. Will this work?
Anyway, I really appreciate all the help guys, i think I may get it and sell my header, high flow/mid pipe for a good deal to someone, im keeping the strommung! What kind of sond do they produce? Id imagine they are more tame than what I had before with the borlas. I hope it is cuz my car is loud!
Dan
Anyway, I really appreciate all the help guys, i think I may get it and sell my header, high flow/mid pipe for a good deal to someone, im keeping the strommung! What kind of sond do they produce? Id imagine they are more tame than what I had before with the borlas. I hope it is cuz my car is loud!
Dan
01-09-2003, 11:48 PM
#23
NASIOC Slut
iTrader: (2)
Join Date: Nov 2002
Location: Roseville, CA
Posts: 4,723
Car Info: 1995 Subaru Impreza 1.8 L
Yes, the MRT is quieter than the borla's due to lack of bends. I like the sound alot myself, since thats the same set up that MMMPREZA has on his car which I have heard in person.
01-11-2003, 10:52 PM
#26
Registered User
Join Date: Nov 2002
Location: Pennsylvania
Posts: 70
Car Info: 1998 Subaru RS 2.5 (soon to be N/A beast)
Nervous.....Please
Even if I don't come out on top, I think I have you beat since I am doing all of the work myself without any real prior knowledge. So, theoretically, if my car runs at all I'll be 1 up. Haha. I am not real concerned with hp numbers. I am most concerned with butt dyno results and at the track. That's where these mods are really going to matter.
Later....
Later....
01-12-2003, 08:53 AM
#27
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I really respect the fact that you are doing all the work yourself, its really impressive! I would love to learn it, but in a city (where I live) there is no real opportunity to learn about this stuff, let alone actually finding a place with the kind of equipment you have to learn on. One day though Id like too....
If anyone is faster than you (which is damn near impossible) you can always shut em up by saying..."yeah...but I did it myself"
. That is where good experience comes from and I really think thats cool.
Dan
If anyone is faster than you (which is damn near impossible) you can always shut em up by saying..."yeah...but I did it myself"
. That is where good experience comes from and I really think thats cool.Dan
01-12-2003, 09:38 AM
#28
Registered User
Join Date: Nov 2002
Location: Pennsylvania
Posts: 70
Car Info: 1998 Subaru RS 2.5 (soon to be N/A beast)
Good Point
Yeah Dan, I guess that is a pretty good point you have there. When the engine is completely done (like next year with the high comp block and 4 throttle bodies), if there is anyone faster than me, (which would obviously mean they were crazy turbo'd with nitrous) I will have the comeback that, "yeah, you may be faster than me, but if you'll look at my engine, you'll clearly see that I'm insane and that's a pretty good accomplishment for an insane person!" hahaha. Well Dan, thanks for the words of encouragement. It's too bad that you don't live down here near me. I would definitely like to have someone to share my insanity with. There is plenty of room and garages available for rent. I have a big 2 car garage for $75 a month and I am only 1&1/2 hours from New York City or Philadelphia. Plus where I live I have like 10 mountains anywhere between 15 minutes and 1 hour to snowboard at! Not to bad. Well, I think that I've babbled enough. I'll talk to you soon. Keep in touch and get that damn car done so I can see how your chip tuning works out.
Later.
Later.
01-12-2003, 02:02 PM
#29
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I can't wait to hear about how this buildup goes. If one of you guys finish soon, I'll probably change my plans of just getting Cobb Street Cams and Stage 1 Heads to doing a full build at income tax time. Or I may just put the same amount of money into Templars SC kit
01-12-2003, 07:52 PM
#30
Looks like a killer build, good luck! Let us know how it goes.
One word of CAUTION. Be careful with lightening up too much weight off the ends of the crank. Lightweight underdrive pulleys AND a really light flywheel might stretch the engineered limits of crank balance......you don't want to introduce too much possibility for imbalance and thus, bearing problems, crank "walking", etc.
Not knowing specific engineering parameters for the EJ25, this is only theory. I do know that other engines, like some BMW 6s, start to get unruly with too much 'off-crank' lightening. The EJ25 does have a fairly sizable bore, which theoretically introduces the possibility for more side loading problems.......especially with the narrow rod journals of the EJ25.
Just verify that others are running such a combo with no problem. Nothing to freak out about.
-Mirror
One word of CAUTION. Be careful with lightening up too much weight off the ends of the crank. Lightweight underdrive pulleys AND a really light flywheel might stretch the engineered limits of crank balance......you don't want to introduce too much possibility for imbalance and thus, bearing problems, crank "walking", etc.
Not knowing specific engineering parameters for the EJ25, this is only theory. I do know that other engines, like some BMW 6s, start to get unruly with too much 'off-crank' lightening. The EJ25 does have a fairly sizable bore, which theoretically introduces the possibility for more side loading problems.......especially with the narrow rod journals of the EJ25.
Just verify that others are running such a combo with no problem. Nothing to freak out about.
-Mirror