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14B dyno record

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Leon, I see that blasted drop off too. Mine drops from 19psi to about 16. Anything you can do to fix that?

I don't have a huge fmic, its fairly small, and the pipes are 2.25" 2gmaf, lots of fuel, full 3" exhaust.
 
Bohrn said:
Leon, I see that blasted drop off too. Mine drops from 19psi to about 16. Anything you can do to fix that?

First, make sure that you have absolutely no exhaust leaks before the turbo! If you do not have any leaks, you ether tune for it (lots of timing!) or upgrade the turbo ;).
 
I know, I need a bigger turbo. But, I have this thing. I want to run 12's with a full weight car, stock engine, real street tires, no NOS, 14b and pump gas. And no standalones.

I know, sorta tall order, but I wanna give it a go.

went 13.30 at just over 105, with a big boost leak or 4, granny shifting, lowish boost, too much knock and a 2 second 60' due to crappy clutch.

I just think it would be easier if I could hold boost to redline.

thanx for the advice on the exhaust leaks, I'll check
 
Driving is key. My buddy did 13.2@104 with like a 1.88 60ft. And the car wasnt tuned the best either. I went 12.3@111, and get busted on for having a low trap on pump/50trim/stock longblock. I guess its not cool to drive well =|
 
oh, I KNOW I need to drive it harder, but it has 245,000km on it, and it can't shift much faster.

So you figure 105 is enough MPH? I kinda did too. once the clutch and tranny are up to it I should be able to pull out a 12.
 
GRNDSM said:
First, make sure that you have absolutely no exhaust leaks before the turbo! If you do not have any leaks, you ether tune for it (lots of timing!) or upgrade the turbo ;).

What do you consider "lots of timing" ? What does your timing peak at?

In my 3000GT, ignition timing peaks at just over 30* ... It works OK ... but 127 mph sure isnt 140! Very impressive! :thumb:

Oh, the above video is very cool. Whats with the curves though? They look like the rocky mountains... What are you using to tune??? You didn't pay someone to get you those power curves, right?
 
i owned a 95 gsx, i had a ported 14b, dp(3")2.5 greddy exhaust, 13.5psi, injen intake+k&n filter, i had my profec 2 set at again13.5 psi and my autometer boost gauge said 17psi, i was on the stock sidemount and i ran a 13.74 at 97.352, i live 2 miles away from LACR(la county raceway) its at 3000 feet, so i know that its also about being a good driver to what makes the car fast, so pepole postin low e.t.s are better drivers than others and some gauges are incorrcect so you think you are runnin more or less boost than you are actually runnin. i think numbers are always possible, just highly unlikely.but hey if he did it more power to him
 
One of my buddies @ rmt in Salmon Arm ran a 12.94 @ 102 mph with the 14b.... He was running straight c16 and advanced the timing.... running 450's with a FMIC, 2.5" piping and no tuning devices at all except a FPR!!!!! He had the boost up at 24-25 psi and ran a 1.8 60 foot time..... automatic so he launched with like 20psi!!!!! that was an amazing time with a 14b so I dont know if the low 12's high 11's are possible since the boost falls off as the rpm increases.....Here are his timeslips of his 2 best runs of the day


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haha, no I would shoot myself, at 15psi I did 12.8 @ 105 I dynoed those numbers at 25psi falling off to 17psi, I need to get a run at the track with 20psi.
 
Old thread but what the hey. Something you all have to remember about the 14B is that is uses the same turbine wheel as a 16g. With clipping, a ported exhaust housing, and nitrous, a 14b and a 16g will make similar power. Without nitrous however, obviously the compressor side of the 16g will outdo the 14b. With a strong enough motor, a ported and ridiculously clipped 14b with a 7cm exhaust housing is good for around 430-450 wheel HP with enough nitrous. My small 16g car on spray made 423HP/428TQ on a non-clipped turbo with a ported 7cm exhaust housing, and that was by no means an optimized setup (meaning exact control over timing and fuel). The numbers are very possible if you think about it.

Regards,
 
Pearl93VR4 said:
They're interchangeable?? I ran 16G's on my VR4 previously. I'm running 14B's now... I think a pair of 7cm housings would really help me a lot.

Very impressive numbers on a 14B.

I put down 488 AWHP / 483 AWTQ with a pair of 14B's spiking to 26 PSI and falling to 20 PSI (boost leak)... I ran an 11.8 @ 120.xx the next day.

I've not dyno'ed since then, but I've improved the 1/4 mile results slightly... 11.1 @ 125.70 MPH.

So I think I'm making a little over 500 AWHP. ;) Again, really impressive numbers. Based on your numbers, it looks like I'm getting close to the limit of the 14B potential though :(

(Here's a pic just for shits & giggles)
I love you guys, we all switch from 14b's to something else, you pick them up off ebay for like 200 each, then put down 500 whp.... CRAZY....

can I get a mod list?
 
NosLaser said:
Old thread but what the hey. Something you all have to remember about the 14B is that is uses the same turbine wheel as a 16g. With clipping, a ported exhaust housing, and nitrous, a 14b and a 16g will make similar power. Without nitrous however, obviously the compressor side of the 16g will outdo the 14b. With a strong enough motor, a ported and ridiculously clipped 14b with a 7cm exhaust housing is good for around 430-450 wheel HP with enough nitrous. My small 16g car on spray made 423HP/428TQ on a non-clipped turbo with a ported 7cm exhaust housing, and that was by no means an optimized setup (meaning exact control over timing and fuel). The numbers are very possible if you think about it.

Regards,

What boost were you at before you sprayed and what did it rise too? Also how much timing did you pull out. What did you use to pull timing out? I'm trying to figure out how to safely spray a 4g63, while still on the stock ecu. I used to want to try the 14b, now I have decided to do it with another setup.
 
rhamlinii said:
What did you use to pull timing out? I'm trying to figure out how to safely spray a 4g63, while still on the stock ecu.

If by stock you mean no outside electronics toying with the ECU, then all that you can do is retard the base timing using the CAS.

Otherwise, I think Apex has an older ignition timing controller (ITC.) I'm sure some other companies make something similar.
 
anyone care to share what kind of lbs/min they are seeing? I saw an estimated 2100 hz today and I think thats a little high for a 14b, I am running 21 psi, but I dunno, we'll see when I get this new chip in and can actually read above 1600 hz rather than bumping the base fuel pressure up like crazy and taking airflow out with the maft. I also need to get my damn wideband o2 sensor working again, just went crazy one day and I have no idea why. I'll be sticking with the 14b for some time, so I'm looking to get the most out of it. I've heard 29 lbs/min thrown around a few times, but anyone have any hard numbers to back that up? I'll be doing all my dynoing without nos...since I don't have the money to rebuild my engine yet, and I know I'd go crazy with nos one night and cause some major damage.
 
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