Stock Ca Power Potential?

[nismo_200sx]

i have an internally stock 89 ca18det engine in an S12. it has a blitz chipped ecu, stock ca maf, stock 370cc's, walbro 255lph, and an Sr20 redtop t25 on 14lbs with a full 3 inch exhaust. it's freshly rebuilt, new timing belt, water pump, etc. my friend has a s14 blacktop Sr non vvt model with a t28. my question is can i run this t28 on 14lbs on my ca as it is right now safely without any concerns, issue's or risking blowing my engine up? everyone says get fpr, injectors, and a 300zx maf but i want a mildly stock ca with a solid hp number and not dinging my pocketbook since this is a grassroots basic setup kind of car. somewhere like 260-280bhp. i want it to be as reliable as possible and a t28 isn't insanely bigger than a t25. this will be solely a drift car so the use of it will only be redlining and sliding. no daily, no weekend car, solely a track race car.

[themadscientist]

cheap
reliable
powerful

You can only have two of those at the same time.

Those people suggesting you need more fuel metering and delivery are correct. I didn't see any mention of an intercooler either so if you ain't got one add that to the list. There is no way to trick physics. Either you lower your power figures to achieve cheap and reliable or you raise your investment to achieve powerful and reliable or you delude yourself into thinking you can use the power of your mind to achieve cheap reliable and powerful and get towed home from the track with a blown motor. It's your choice.

[cbh148]

If everyone is telling you to get an FPR, bigger injectors, and a 300zx MAF, then they should also be telling you to get a tune to run all these, which is likely going to be more expensive than any of those other items.

I see where you said you have a Blitz chipped ECU. Don't know if you can get it reflashed or not (without modifying for Nistune/EMance/Enthalpy/JWT/whatever) but I figured I'd mention anyway.

[nismo_200sx]

I have a fmic, I just wanna bolt on the t28 and leave it at the boost level that doesn't risk my engine

[float_6969]

The 370's are your major limiting factor right now. You can run that turbo, but you won't get to the power level you want with those injectors. I would say you'd have to keep the boost under 10psi.

You really need fuel injectors to do much more with this motor.

[sjbsuperman1425]

T28 with walbro 255 and the stock fuel pressure settings as per FSM with a Nismo FPR, I run 12psi and the A/F ratios are still in the good with the stock 370cc injectors. but without a wideband, you never know whats going on inside the engine with the AFR's.

I'm not saying the way I did my car is the best way, but I did all prep work before I even changed the turbo out to a bigger one. I got all the proper gauges to monitor my engine (oil temp, oil press, wideband, boost, water temp), a good boost controller, and an oil cooler. Once i switched to the S14 T28 I was confident that I could monitor my engine and know if something was going wrong. But thats just me, im very cautious lol

[float_6969]

Have you tried going over 12psi to see when you hit fuel the air flow cutoff? I'm not suprised to see 12psi is workable. I knew 10psi was a safe pressure that would overwhelm anything. Really, as long as your not hitting the airflow cutoff (I think it's at 4.5v from the MAFS) then you should be fine. I'll bet you're near that at 12psi though.

[jrchamp86]

Your pretty close to having everything you need for a horsham stage 2 chip. Thay say it will give ouu the numbers that you are looking for. From what you've said you already have you only lack the chip a upgraded fuel pump and a boost controller

[mbmbmb23]

Your pretty close to having everything you need for a horsham stage 2 chip. Thay say it will give ouu the numbers that you are looking for. From what you've said you already have you only lack the chip a upgraded fuel pump and a boost controller

Yeah, you probably can pop out the Blitz chip and put an uprated chip in there. Since it's a tuned ECU its already been socketted.

[float_6969]

Plus, with the Horshams, you know EXACTLY what it's meant to work with. I seriously doubt you know exactly what that Blitz chip was tuned to work with.

[s13drifter88]

With an SAFC and RX7 460's you could pull off the 28 @ 14psi but you still need a maf and I doubt you'd see you desired power traveling that route. There's a big difference in making it work and making it work right. In your seat, you need fuel/maf/tune for that hair dryer at 14psi. To quote earlier, you can only pick 2 out of cheap/reliable/powerful. Wrong choice would be a costly lesson. Invest in a JWT flash or Nistune and call it a day. It's always cheaper to do it right the first time instead of wrong first and right second. Ask me how I know, I'm sure I still have receipts around somewhere. Lord knows there's nothing in my wallet! Lol

[themadscientist]

It's always cheaper to do it right the first time instead of wrong first and right second.

TROOF!