0.8Bar!YAY or NAY?

[sr20detconv]

So I just took out my s13 because I finished swapping the sr20 turbo.I look at my boost gauge.....0.8bar. I think it's a little on the high side.I don't have a boost controller and I don't ear any vacuum leaking.What is the problem?

Should I stop pushing the car because I don't have any aftermarket fuel system or the stock is fine at that boost level.

my mods: air filter sr20 turbo test pipe catback BOV(I don't think it should affect something)

[driftin8ez]

I'm spiking about .75 bar on my stock turbo. I don't really know how that would help. Thinking back on it, that actually doesn't help you at all i just wanted to get it off my chest. But this will help. Get a 255LPH fuel pump and FPR or your motor is going to be a paper weight soon enough. After that .8 bar should be safe.

[float_6969]

If this is a stock Silvia from Japan, I wouldn't be as concerned about the fueling as I would the stock side mount at that boost level. It's pretty infamous for being too small. I would consider a larger SMIC or a FMIC.

[biosehnsucht]

With absolutely no boost control beyond stock wastegate, and that connected right at the compressor outlet (rather than the intake manifold) I am making up to 0.6bar. If I fix a few last issues I can probably hold a bit more than that as it is, without boost control..

This is with custom piping, HKS mega flow filter, ARC SMIC, stock intake/exhaust manifolds and stock turbo, o2 elbow, 3" downpipe, 3" cat, 60mm cat back (HKS Sport). Also, I have 84mm pistons, so I've got a hair more displacement..

[rotorific]

.88 bar is roughly 12.7 psi which according to the info from this site is pushing the fuel/spark limits and the stock intercooler is pretty much useless.

BUT!!!!

If you are using the CA compressor outlet/bolts then that is your problem.

I just did a side by side view and the SR and RB bolts that connect the compressor neck to the turbo are about 10mm longer than the CA bolts.

It happened to me and also created a boost leak a couple of days after I did my SR turbo swap.

-Gabe

[sr20detconv]

thanx alot.I did use the SR bolt that connect to the compressor outlet.My car also spike to 0.8 and drop down to approx 0.7bar. I really want to know how to drop this. My old turbo was spiking 0.9bar sometime.

Also for the intercooler.I'm really on a tight budget so what do you suggest me. Is the ssac intercooler kit really a bad product?

As for the fueling some say my stock system is fine others say I need a 255lph with a fpr.Are the stock ECU parameter good at that level or do I absolutely need a a retune.

I'm asking all these question because I don't want to spend money on ''useless'' modifications.

Thanx again.

and ....yes my car is a Japan Spec RHD silvia..

[driftin8ez]

Also for the intercooler.I'm really on a tight budget so what do you suggest me. Is the ssac intercooler kit really a bad product?

As for the fueling some say my stock system is fine others say I need a 255lph with a fpr.

Many of us have the SSAC s14 SR FMIC kit on our CA s13's. And many of us love them to death. me being one of them. This is one thing ssac got right. Not a waste of money and worth every penny.

As for your fueling i would always rather be safe than sorry. A 255lph fuel pump with an fpr will give you piece of mind. Your fuel pump/strainer sock could be going on 15 years old now or it could have just been replaced you dont know. Why take the risk. It will be $180 well spent dollars. Also with an upgraded turbo your really asking ALOT from the pump.

[float_6969]

The SSAC S14 SR20 kit works fine on the CA and is of good quality. I ran one and it kept the intake temps down VERY well. It increased lag somewhat, but that is going to be expected with ANY FMIC kit.

The walbro and fpr is certainly a good idea. But since your car came with the 175HP CA18DET stock and ours came is a 155HP KA24DE stock I would assume your fuel pump would be rated to flow a bit more fuel than ours.

If I were you my main concern right how would be keeping the intake temps down and making sure you're fueling is correct.

Try and find a dyno locally. Tell them you are just wanting to get a baseline run with AFR. This time of year they may be hurting for business and you could haggle with them on the price since it's just a single run.

That will tell you how your AFR's are doing.

[ch187]

i just got my setup rolling. ive got stock t25, ssac fmic, voodoo boost controller. i think the bearing in my MBC is getting stuck or something because i will hit 7psi but then it will jump to 12psi( its set to stock boost). i mean it feels good but i dont know if its killing my engine or not. ive got megan boost and AF gauges. the AF gauge i guess is wired wrong so i dont know if im running lean or not. so you guys are saying 12psi is alright as long you have FMIC but it wouldnt hurt to have walbro fuel pump and FPR?

[float_6969]

If your chassis originally have a KA24 in it, you're pushing the fuel pump at 12psi. If it is a JDM spec S13, then you'll prob be OK.

[ch187]

If your chassis originally have a KA24 in it, you're pushing the fuel pump at 12psi. If it is a JDM spec S13, then you'll prob be OK.

yeah well it was a ka so looks like ill be hunting something down. i may as well spend the extra cash and get a walbro (any recommendations on adj. FPR?) than finding a silvia pump.

[float_6969]

Most of us run the NISMO unit. See the FAQ for a writeup I did.

[sr20detconv]

I love this forum!Finally a forum that has some clear answers!

But why use the s14 sr20det fmic kit?Why not use the ca18 s13 or the sr20 fmic kit?

Is this bolt-on even on the s13 chassis or I need some little modifications.I guess I need to cut an hole for the piping?And the batterie need to be relocated?

thanx again

[biosehnsucht]

s14 SR piping is nearly as bolt on as s13 CA. S13 SR is too different to be worth the trouble..

and of course SR equipment is beefier since it has to cool a larger charge, and is also much easier to obtain.

[ch187]

the thing with most ca pipe kits is that they dont go all the way up to the throttle body. you have to use the stock rubber tube coming off the TB. the sr TB is located in a completely different spot

[driftin8ez]

If you buy any fmic kit for an s14 sr it WILL bolt right on perfectly. All you need is to get a lawnmower/miata battery or relocate to the trunk and make a hole in the battery tray. Please don't listen to everything you hear and only speak from experience.

[sr20detconv]

This is VERY helpful.Actualy my batteri is really small.It should fit.I don't see s14 fmic kit on ebay...I will search again.

[sideways danny]

just as a note regarding statements about the fuel pump in the factory CA equipt cars. the pump is crap, it's just about good enough for standard. do not be under any misguided delusion that Nissan would over spec anything. the standard pump is 90lph