not sure if this will work

aceridaz

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i have a 95 dx civic fixing to rebuild the motor with low compression forged pistons and connecting rods and i want to run 25 to 35 lbs of boost for about 300 to 400 hp. good match???? or does someone have better advice??????
 

XpL0d3r

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The amount of boost isn't really a direct comparison to power. A motor with a big turbo running 20lbs of boost would have much more power than a small turbo.

First, before anything, research research research! IMO, set a budget, and then set a realistic power goal based on that budget. Set $500 aside for tuning ALONE.

Is this going to be a track car or a daily? 300hp is PLENTY for a street car.
 


emerican

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if tis going to be a street car then you dont need 400 so shoot for 300
and have you thought about taking some of that money and swaping in a better more suitable platform then boosting that
also agree with everything xplod3r said
 


xxBLOOD88SHOTxx

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why wouldnt it work

what do you mean by good combo? stong bottom end with a ton of boost is always a good combo
 

mc360

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First I would get a d16y8 or z6 intake manifold and maybe a head if you want vtec. Like stated above set a budget and goal that isn't to ridiculous, if this is a street car or even your dd I wouldn't advise more than 300hp as it will be a pain to drive. 35 psi, that's a bit crazy since any turbo that can push that much air is probably capable of 500hp or more and will have way to much lag
 

RealRabbit

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why wouldnt it work

what do you mean by good combo? stong bottom end with a ton of boost is always a good combo
Because you don't want all your power up top. Might be ok for a strictly drag car, but making 90 HP then 300 is only fun until the newness wears off. A higher compression ratio with a little less boost will yield the same power, but give you a better power band. Also, a huge turbo that will make 35psi will take longer to spool. A small turbo to spool faster will drop off at higher RPMs. So you need to match it all together properly to not only meet your power goals but keep the power more usable and fun.

There is more to a build then forged internals and throwing an oversized turbo on it and turning up the boost.

Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
 

Failsafe88

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Don't listen to these people on drive ability lol. You probably won't need more than 20 psi with the right turbo. I suggest go ball bearing turbo though. I'm shooting for 400 range
 

xxBLOOD88SHOTxx

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Because you don't want all your power up top. Might be ok for a strictly drag car, but making 90 HP then 300 is only fun until the newness wears off. A higher compression ratio with a little less boost will yield the same power, but give you a better power band. Also, a huge turbo that will make 35psi will take longer to spool. A small turbo to spool faster will drop off at higher RPMs. So you need to match it all together properly to not only meet your power goals but keep the power more usable and fun.

There is more to a build then forged internals and throwing an oversized turbo on it and turning up the boost.

Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
No offense, but I am the last person that needs a lesson in forced induction. The OP asked a question, will it work. YES it will work. Will it be practical? NO, unless this is just a weekend warrior, in which who gives a s**t. I did not go in a long winded answer because I have done it too many times on here, and am now more prone to letting people learn on their own.
 

RealRabbit

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why wouldnt it work

what do you mean by good combo? stong bottom end with a ton of boost is always a good combo






No offense, but I am the last person that needs a lesson in forced induction. The OP asked a question, will it work. YES it will work. Will it be practical? NO, unless this is just a weekend warrior, in which who gives a s**t. I did not go in a long winded answer because I have done it too many times on here, and am now more prone to letting people learn on their own.
With an answer like your first one leads me to believe other wise. If you've done it many times before then good for you. I'll put your brownie badge in the mail now. If you don't want to contribute that's even fine, but no need to give half assed answers that lead to more questions or are misleading.


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xxBLOOD88SHOTxx

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Whats wrong with more questions, you will be more than happy to supply the answers correct? How was my response misleading? It was direct and to the point, and maybe he might of even learned how to research the topic on his own now that he is aware that his plans are not impossible. Sometimes, people get frightened or discouraged with a large descriptive answer with lots or detailed scenarios or lists of mixed and matched combos that he doesnt understand one word of. You have your way of "helping" people while I have mine, and that is perfectly fine. Keep up the good work. I'll be watching the mail box for those brownies though.
 

emerican

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^ keep this on topic no more of this guys
this is my warning before any of it gets out of hand
 

aceridaz

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Well its A Weekend toy and once a month i take it to the strip and every now and then a street race but my goal on the street is to at least take out any vett or muscle car that laughs at tuners and i like reall answers not smart ass remarks
 

Failsafe88

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Dont expect to take out every vett and muscle car it just wont happen. Its a matter of picking your battles. If you build it correctly have still get beat by someone then they will probably respect you b/c of the fact that you hopefully didn't get torn apart like every other ricer that trys the same s**t.
 

obracer12

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OP

Research the turbo and build in your budget. Depending on compressor size, will determine your boost requirements for your goals.

300 is more then adequate for a street car.

For example:

D16Z6 with Vitara pistons, mild head work 450cc injectors and a 14G at 10-15 psi will get you somewhere in the 200 +- range

OR

D16Z6 Stock sleeves
Stock port head
Bisimoto Level 2.4 cam
75.5mm YCP vitara pistons, 0.0025 P2W clearance
Eagle rods
57trim T3/T04E, .63a/r
Skunk 2 IM
and clear 400whp

the real questions are :

What is your budget?
What is your goal?
Do they match?
 

aceridaz

New Member
well budget really is not a problem i can always save and truth be told i would like to be running 12s atleast and im really new to the tuner scene so im still have alot to learn the last car a had was an 83 z28 that ran 11.3 so in time im hoping to get close to that. iv had this civic for about 4 years just doing bolt ons like i would to start off with a V8 but once i researched i found that bolt ons dont do crap so know i know i need to forge the bottom end and turbo but thats about all i know so any advice is welcome at this point

well not to worried about budget i can always save i would like to be running 12s atleast im still new to the tuner scene my last car was an 83 Z28 Camaro that ran 11.3 so the closer i can get to that the better iv been working on this car slowly but surely for about 4 years doing bolt ons then found out that they really dont do crap so did research and know i know i need to forge the bottom end and turbo but thats about all i know so any advice is great
 
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obracer12

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Even then, forged internals are not required with certain goals.

With my build ( budget B-series)
I got low comp pistons and shot peened the rods. Safely running 15psi from a .50AR T3/4. ~ 8' of 2.5" charge piping + 2.5'x4"x14" intercooler

700cc injectors
S300 hondata
3Bar MAF
etc...

Hit 305 whp 205 ft/lb on a dynojet.

Daily with a conservative tune at around 275whp.
All in the planning .
 

aceridaz

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so your running around 14 13 range i think and thats pretty good and a heck of a lot better on my pocket book and thats about the best advice iv got yet. Do you suggest in take or throttle body
 

obracer12

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no need for either.

I stuck a little aluminium 3" extension on the inlet of the turbo and cone filter. Stock B16B throttle-body, upgraded MAP/MAF sensor.

It all comes down to tuning.

On my way into work today I had a little fun and under full boost I hit ~12.75 psi @ 6500rpm 3rd gear, a little soot and slight backfire between 3rd and 4th.

Finding a good machine shop to temper and peen the rods is tough. I happened to know a guy that worked at a NAPA machine shop who knew hoe to do it. Took the car to Evans tuning in PA and he did a great job.
 


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