new to the SR20, got lots of questions.

[tig488]

ive had a turbo'd G35 coupe for some time now. im selling it to buy an sr20'd 240sx. ive found one i want and im pretty sure im gonna get it.

the motor is torn down, about to be overhauled and rebuilt with wiseco pistons, eagle h-beam rods, full HKS valvetrain, rocker stoppers, ARP bolts, p & p heads, walbro 255 pump, mated to an sr20 manual transmission, and already wired and ready to go, running the Power FC jetro.

questions...i want 500+ hp on a safe conservative tune.

1. what size injectors, im thinking the sard 850cc side feed injectors, something over 800cc at least. and what regulator? aeromotive, or sard?

2. stock intake manifold? or should i get the greddy?

3. stock cams, or should i go with the HKS 264/272 setup?

4. is the stock fuel rail sufficient, or should i get an aftermarket rail?

5. i have a spare GT35R sitting in my garage, should i use that, or use the t3/t04e turbo that is included with the motor?

6. what else do i need to purchase for the rebuild, ive got the rods, pistons, bearings, gasket kit, headgasket, bolts, valvetrain, is there anything else i need to finish just the block rebuild? i believe the water pump, and other acc are ok.

the setup is a 95 240sx, full interior, sunroof, all power options, white, good paint, there are a few small dents that can be fixed. like i said sr motor, transmission ecu, already wired, spec st2 clutch, koyo radiator, turbo, manifold, intercooler and all piping, stock suspension and wheels. all that for 5000.

good deal? thanks guys.


Modified by tig488 at 12:51 PM 12/24/2006

[ILikeMy240sx]

you really need more searching and reading to do.

If you are shooting for 500+ RWHP then how do you expect to stay with stock cams and stock intake mani.

Go with gredy IM, I would use the GT35R with cams that are stage 3 like 272 duration both on intake and exh. Also Id stay away from HKS valve springs as they are not much stiffer than stock ones. People do break them. Stock fuel rail is sufficient.

Also think about solid lifters and cams with more aggressive lift/ramp characteristics.

[tig488]

i agree, i need to do more reading, but life doesnt allow it. i wish i could sit at my computer 24 hours but that isnt possible, im not a noob to forums, just this one. it would be different if searching turned up good hits, but i dont have time to sift thru lots of unusable info to get the one sentence that i need. much easier to ask.

i appreciate your response. like i said, im not building the motor, a shop is, an he said stock cams are fine, he said stock valves are fine, he said the hks valvetrain is fine, i have no leg to stand on because i dont know crap about these motors, but i can tear down and rebuild a VQ. he also advised against stage 3 cams.

on the VQ you can reach upwards of 500 on the stock intake manifold, 2 different cars.

thanks again for your response.
Modified by tig488 at 9:36 AM 12/24/2006

[ILikeMy240sx]

seems like the shop that's doing your motor doesnt know what they are talking about.

if you want lots of power you NEED things like aftermarket manifold and stage 3 cams. I dont understand why he advised against it. HKS valve springs are weak. You want something like Peak Performance. I hear those are good. If you want really stiff for not too much money look for Brian Crower sets.

I would take your motor somewher else.

[itsnever2fast]

your motor guy is prob a dumbf*ck i would not plan to go over 400 horse unless you have a FAT wallet. any more and you will have to triple your investment, the driveline is built for 400 horse, any more and you have to change everything. IF YOU WANT 500 horse it isn't goin to make any bottom end power and wont be any fun to drive.

i am building 2 cars one to drive, one to dragone is a very similar set up ~400-500 horse pump gasi would go with hks cams but not hks springsHKS step 2 cams 264/272 would be nice in/exstock valves would work fine if you want to be really safe get stock sized stainless not oversizedwiseco's are fineeagles are fineNEW water pump, NEW oil pumpGT35R sounds goodyou need to go with a different intake manifold greddy or other high flow plenum stock fuel rail should be fine from what i hear (sidefeeds) stock fpr or nismoditch the spec clutchif you want to make more than 400 horse loose the stock axles and consider upgrading to z32/33 trans and custom driveshaft.

[tig488]

thanks itsnever2fast.

i dont really know the guy building it, a friend told me he had his setup for sale, i went and looked over it, and he told me all this info.

with this 5k in the car, im ready to drop another 5-7k into the car, in suspension, drivetrain, etc. its not gonna be my dd.

i just want to the car to be quick. right now my turbo G35 makes 400/400 at the wheels, BUT it weighs 3500lbs. i guess the 240, completely gutted except for 2 seats, dash, and cage, with 400-450whp will be quick enough. im used to a lot of low to mid range power, which is what i want.

you mean the stock SR transmission is good for 400?

i might just say bye-bye to his setup and just buy a stock sr motor, then change some things, if all im gonna be going for is 400ish whp.

thanks guys.