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how to modify L28 w/out stroker crank??


zxjuiced

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Hi, this is my first thread,been reading alot of your advice..You guy`s are very sharp !!so here`s my question I hope you guys can help.....

I would like to gain more performance out of my stock L-28 N/A ...it`s out of a 1980ZX,has only 57,000 original miles...would love to stroke it but, cash flow is tight....was considering to bore it out,use a bigger piston and change the cam and have some work done to the head...I was planning on just for now to use the stock fuel injection for the time being..does this sound feasable,any suggestion please....thanks

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i`m not sure,I guess as little as possible... would like to get the most bang out of a buck as i can....but to give u a price range would be $1000.00 to $2000.00 had the money saved up for the paint job,and then was going to start putting money back for the motor work when my wife decided she wanted breast inplants,so of course i forked over the money...let say it was well spent,enjoy her new boobs alot!!! but now my car sits in primer and the motor is hang on the stand...so now i`m going to do the motor work first,then paint it later.....

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Guest norm[T12SDSUD]

huh uh uhu huh bonk.gif

He said Breast Implant

huh uh huh

 

Man, that is some funny Shiat!!

 

Concentrate on headwork and a cam as thats where the power will really be made and save some money and just leave the bottom end stock.

 

Later,norm

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boost! im still having a ball boosting, im soon to be at 15psi once i install my IC.

sounds like you have a really strong motor, i wouldnt touch it internally yet since you stated lowbuck. once you open it up, you open up a lot of variables, plus when cam with lash pads and hardware starts at 500.00, low buck is already out of the question-at least for me.

i am thinking about doing another 280z NA and this what i would do before touching the motor, thinking in terms of junkyard score almost strictly.

 

60mm 240sx throttle body. i run mine with a cable because i didnt want to have a spacer machined, and plus you can hack off the bar linkage mounts on manifold, making it CLEAN... havent done this on an NA car so i dont know how much power it would make, on a TURBO setup its very noticeable.

 

cold air intake- what i did on my old 280z NA was

take a die grinder and cut off the top of the stock air box, leaving the wingnut portion intact and dropped a square k and n air filter into the mix using what was left of the top to secure it to the box-makes that moaning induction noise that the girls love, freed up maybe 5hp on my car-but the og air filter was extremely dirty.

 

recurve the distributor-good for another handful of hp. i dont know how to do it, my boss at the shop did it for me and i tried to watch him do it so i would learn it, but i still cant do it. this was good for another couple hp, and way better response and starting.

 

header and 2.5inch piping to a nice muffler-i recommend borlas over almost anything these days. i run a 3" exuaust to a 3"in/out ss borla and its great, doesnt sound like a honda and doesnt melt my eardrums with drone.

 

tune up the afm-usually they could use a little tuning to get mixture setup for some beating.

 

3.90 rear end and short tire/rim combo. i still might put 3.90s in my car. dramatic change in off the line type situations, and fun as heck.

 

all of this is pretty cheap except for the exhaust. this is what i would do before ever touching the motor.

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thanks everyone for your input!!!

 

Len,I hear what your saying, I already have the MSA three into two header. I have the 2 1/2 exhaust with a obx tunable bomb muffler,big 4" tip stick thru the rear skirt,"LOOKS COOL" Don`t know what it sounds like yet...custum designed my own cold air induction,think this will work great!!!I had my injestors sent out and had the works done on them....This should be a big improvement,each injector spraying the same ps. and pattern...SO I LOOKS LIKE A BIGGER TB NEXT....THANKS,KEEP THE SUGGESTIONS COMING....

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