Beefing up the bottom end

[matt240det]

is there any way to strengthen the bottom end cheap..now before you flame me i mean i don't want to build it to support 700hp i mean what parts can i use to make it support like 525rwhp is there a step down from all out race, all i want is to strengthen it a little bit maybe 300zx pistons or something, i'm new to this motor i've been a dsm guy for a couple years so i dunno which parts fit into what, basically how do i build the bottom end mildly...thanks

[JNM240]

Turbo KA or no?

Turbo KA: lower compression pistons and new everything. bearings, head gasket, timing chain, headwork, ect ect

NA KA: higher compression pistons, everything else as above.

Neither is cheap unless you do it yourself, where you will only be out on the parts. Get a good machine shop to bore/hone your cylinder walls and port/polish your head.

[Daunttless]

Erm, 525rwhp is not mild. I think more than a few people would consider that full out race.... And no, there is absolutely no way to cheaply build anything with these cars unless you want it to blow up. : ) Also, no, the 300ZX pistons are not interchangeable to my knowledge, there'd be a lot of work involved in that you may as well just get custom forged pistons. Also, I still can't get over the 525rwhp comment, 300rwhp is fast on these cars.

[matt240det]

welp i an getting a t3/t4 50 trim which i'm hoping will put me a little over 400rwhp the car has a lot of weight taken out so i want to haul *** anything under 400 i won't really be happy it's a drag/street car mostly drag but driven on the street if you know what i mean and it's an sr20 motor bye the bye

[Exar-Kun]

using a t3/t4 on a sr20 will produce a good bit of lag, and from what I understand(someone tlel me if Im off base here) a ball bearing t3/t4 can still only support maybe 450hp.....

chris may uses a custom turbonetics t3/t4 and has to run race gas to get 420hp(rear wheels).....

pretty cool, and I know of cars using the sr20det running things like t78's.....but the lag is horrible, and the engine buildup to make the engine capable of sustaining that much boost will make you go broke(take a look at signals 600hp sr22det..to build that it probably would cost you 12k just for the engine and ****...and its not very streetable..)

you can try running a toda stroker kit(to get the sr22det like in the signal car) and maybe use a t3/t4 ball bearing unit, the added displacement should help with turbo lag...but Im not sure if thats what your looking to do...

-chet

[boMex]

It sound like your one of those guys with a whole lot of car and no knowledge. "Cheap" and "Built bottom end" and 4 words that don't fit together. 500whp doesn't come cheap....in fact a reliable 300hp isn't really cheap either when you get down to it. I hereby declare you a "Full of s*** Newb"

Have a nice day:D

[ST240]

300 hp is relatively cheap tho... what fmic, good fuel system, boost controller.

-Andre

[jdubau55]

you forgot about the turbo dude. 300 hp on the stocker? you gotta be kiddin. we are talkin RELIABLE hp here not a week of fun. heavy throttle has been advertisin their 320 rwhp kit for a while but who knows how realiable its gonna be. oh and a good FMIC and fuel system with controller isnt really considered cheap in my book. but maybe its because im poor.

[Exar-Kun]

300 hp is relatively cheap tho... what fmic, good fuel system, boost controller.

-Andre

good fuel system: -HIGH capacity pump: 300 dollars-rising rate FPR(adjustable via FMIC): 150 dollars-custom injectors:180-450 dollars-fuel rail/misc hose: 200 dollarsFuel system total: about 800-1200 dollars

Boost controller/FMIC:APEX-I VPC-R: 370-450 dollarsAPex-I AFC-R: 400 dollars

grand total about 2k or more with install

CHEAP? I DONT THINK SO.

and all of that still wont get you 300hp. it will just help you HANDLE IT.

-chet

[ST240]

who said you need an electronic in-car bc :pface

-Andre

[matt240det]

It sound like your one of those guys with a whole lot of car and no knowledge. "Cheap" and "Built bottom end" and 4 words that don't fit together. 500whp doesn't come cheap....in fact a reliable 300hp isn't really cheap either when you get down to it. I hereby declare you a "Full of s*** Newb"

Have a nice day:D

this from a kid whose screen name is bomex..another all show no go huh? do you have the PhaT bLiNg rims too? your gonna tell me how expensive things are i din't mean cheap as in cheap, i guess it was bad wording i meant cheaper than a stroker kit or forged rods and pistons, i've spent over 10k on it so far and it isn't close to running. as far as a whole lot of car and little knowlege i work on cars all day everyday at a dealership, so i have a clue i had a 300whp eclipse gst amd i'm building this 240 from the ground up, i know in a dsm if you use 1g rods and 2g pistons to make the motor a little stronger but it is a stock rebuild i was wondering if there was a way to do that with the DET i'm new to nissans but not new to cars so when it is done we will see who is full of ****, and as far as the t3/t4 on ly make 420hp therer are MANY diffrent trims compressor housings exhaust housings wheels a/r etc so it depends on which one you getas far as fuel systems go i have the JWT ecu walbro pump z32 maf and 660's so it should be aight

[Daunttless]

A persons name doesn't mean much, you didn't specify how much money you had spent or what you worked on. If you've looked around questions like this get asked a lot, and then people are pissed off when they actually have to spend a little money. You've already thrown a lot of money at your car and you'req uibbling over forged internals? Also, in 10k I'd have thought ther would be something forged in that total, unless you're including the cost of your car or what not. You also mentioned using stock internals for 300rwhp on a DSM, but not 525rwhp. : ) Why would anything stock on these cars support 525rwhp stock? And in 10k, why would you worry about using stock pistons, you sort of need forged internals for the power you want to push. Also, if you're wanting to push 400 to the ground and not strain your injectors and what not, I'd suggest at least 720s, 850s would probably be better but I don't like to strain components. Enjoy your day.

[Exar-Kun]

:withstup

and some other thoughts, a JWT ecu alone I dont think is really the way to go for a race car, I love JWT and all, but I think even the wolf himself would tell you to get a programable fuel computer/interface so you can fine tune it to all the stuff you get done now, as well as any other stuff down the road...that way you dont ahve to get JWT to reporgam it evenr 2 months when you change something like the manifold size or something...

just my thoughts right now..(Im wiht daunt on the if you already spent XXX dollars thing, too...why sweat a "cheap" engine build with 10k already in it?)-chet

[Daunttless]

Not only that, but why blow it up after you invest all that money. I mean it IS a KA-T, so it will eventually blow up : ) but with all that money I would figure you would want it to last at least 18 months.

[boMex]

Not only that, but why blow it up after you invest all that money. I mean it IS a KA-T, so it will eventually blow up : ) but with all that money I would figure you would want it to last at least 18 months.

Hiya Dauntt. I decided to come defend my post. But I"m just leaving work...so it will have to wait, gotta go home and eat my spinach so this 'ol canuckle head can kick some matt240 @$$ :uzi....BTW Actually he's got an SR

[Daunttless]

Dah ha, and all this time I thought it was a KA-T, must be because of the second guys post. : ) Well, most of what I said is still relevant. : )

[boMex]

hmmm...strange I really don't think I have to defend myself now...I dunno :sleep

[JNM240]

He never specified WHAT engine he had so i was assuming he meant the stock KA24(D)E. Thats the only reason i would imagine someone would want to rework their bottom end: boosting a NA car or (in my case) 200 RWHP in NA form!

Hey guys i got a thing in my thing what do i do to make the other thing do its own thing? Its not working.

LOL

[MasterMan]

u have to change out the thing with the other thing.. so the orignal thing will work.. go that?

[george]

700bhp with a KA is possible. AEBS in San Diego Ca has made a few KA's push that much. And even after two race seasons the engines run great. But it was not cheap, forged internals and independant engine management. The ka is a better motor than the sr20 at this level and with these specific mods...just my 2 cents.