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Discussion Starter #1
gspot said:
We finally had a dry Friday night at the track for testing. The new throttle body plus the cooler air reduced my 1/4 mile time by 1/2 second, from 20.8 seconds to 20.3 seconds. Still not fast but it's an improvement.

Hey guys!
I see this is a VERY old post - but is this the usual time you run with the 1600's? 20 seconds?

I eventually got my GA14 down to 17.325 on the 1/4 mile last weekend - in 34 degree Celcius heat! So I should be running very low 17's in the winter time... How does this compare?

PS - I got my GA14 up to 116Hp now...
 

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Hi, i splitted the thread since it wasnt related to the tbi swap....

the E16 runs about 20 sec on 1/4, stock...
Ga16i should do about 18.5 or so... maybe i little less...
all stock.

I dont know much about the Ga14 that you got, is it a twin cam 16 vavle ??...

i got a friend that did some flat 16 with a beater 93 sentra gxe 16 valve with only HAI and many many holes in the car... (weight reduction)

As for me, i did 15.7 with my E15iT (tbi turbo) lasty summer. should be way better next summer as ill have a lots of upgrades putted on..
 

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Crazy-Mart said:
Hi, i splitted the thread since it wasnt related to the tbi swap....

the E16 runs about 20 sec on 1/4, stock...
Ga16i should do about 18.5 or so... maybe i little less...
all stock.

I dont know much about the Ga14 that you got, is it a twin cam 16 vavle ??...

i got a friend that did some flat 16 with a beater 93 sentra gxe 16 valve with only HAI and many many holes in the car... (weight reduction)

As for me, i did 15.7 with my E15iT (tbi turbo) lasty summer. should be way better next summer as ill have a lots of upgrades putted on..
your english is geting kinda funny there crazymart......just curious you running stock turbo on your 15??

my pulsar i timed once at about 18.9ish. that was with a hard launch and its estimated cause it wasn't....well I'm not supposed to tell you that it wasn't at a track....it was at an untimed track ;) I'm not sure what the mph was, going to fast to look down (sarcasm). I think most people who try to make their E16 sentras and pulsars quick get down to the 17's. with a lot of work you can get an E to 16's....and of course turbo 15's. I don't know squat about GA's though..but that 17 is pretty good.
 

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Discussion Starter #4
The GA14 is similar to the GA16 motor - just a 1400cc. It had Double overhead cams, 16 valve and uses crossflow fuel injection.

I must say the motor has been modded quite a bit to achieve those times - 272 billet-cams, Freeflow exhaust with a 4 into 2 into 1 branch (Headers) Simota cold air intake, Hardened suspension dropped by 40mm (1 3/4 inch), Dastek Unichip and now revving to 7500RPM.

Still trying to ger her into the 16's

Will port and flow the head next and then lift the compression ratio - also considering ITB's and a full replacement management system.

Already installed water injection for when the compression is lifted and now just using it as a quick cool down before runs...

Here is a pic or 2











 

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Gsolo said:
your english is geting kinda funny there crazymart......just curious you running stock turbo on your 15??

my pulsar i timed once at about 18.9ish. that was with a hard launch and its estimated cause it wasn't....well I'm not supposed to tell you that it wasn't at a track....it was at an untimed track ;) I'm not sure what the mph was, going to fast to look down (sarcasm). I think most people who try to make their E16 sentras and pulsars quick get down to the 17's. with a lot of work you can get an E to 16's....and of course turbo 15's. I don't know squat about GA's though..but that 17 is pretty good.
My english sucks from time to time ... i guess its just a mather of me getting tired late at night ;) ... just remember its not my primary language ;) ... i still think im not so bad lol....

well im running a T25 from a red top silvia engine. the goal this year is low 14s . Ill have upgraded the clutch (stock one is burned so bad), added an intercooler (22x12x2.5 or something similar) redone exhaust in 3in dump/2.5 cat back, full efi swap and tuned ecu with wide band ... and most of all getting 15-18psi instead of 9-10... engine management is still unknown as of today ... still got a few options in mind. I get time slips from the track i go to and i should be going to the same place this year also :)
 

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Discussion Starter #9
Yeah - the car is a little riced - but over here that is a good thing - I know most of you guys hate rice - but trends differ - ita also to draw attention to our website and club...

Mods include:

272 billet-cams, Freeflow exhaust with a 4 into 2 into 1 branch (Headers) Simota cold air intake, Hardened suspension dropped by 40mm (1 3/4 inch), Dastek Unichip and now revving to 7500RPM.

Will port and flow the head next and then lift the compression ratio - also considering ITB's and a full replacement management system.

Found some ITB's off a GPZ1100 that I will adapt to fit - will also upgrade the injectors to those on the 280ZX as they fit in the ITB's

Rest is just an MP3 headunit - a racing bucket seat - window tint, lots of vinyl, fire extinguisher, STI bonnet scoop and sideskirts, colour coded mirrors etc etc...
 

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FiredragonCT said:
Yeah - the car is a little riced - but over here that is a good thing - I know most of you guys hate rice - but trends differ - ita also to draw attention to our website and club...

Mods include:

272 billet-cams, Freeflow exhaust with a 4 into 2 into 1 branch (Headers) Simota cold air intake, Hardened suspension dropped by 40mm (1 3/4 inch), Dastek Unichip and now revving to 7500RPM.

Will port and flow the head next and then lift the compression ratio - also considering ITB's and a full replacement management system.

Found some ITB's off a GPZ1100 that I will adapt to fit - will also upgrade the injectors to those on the 280ZX as they fit in the ITB's

Rest is just an MP3 headunit - a racing bucket seat - window tint, lots of vinyl, fire extinguisher, STI bonnet scoop and sideskirts, colour coded mirrors etc etc...

if you ask me it's on the edge of rice...but its clean not overly done and not done to look like and fit in with everyone else.
 

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Firedragon, you might gain a little torque by making a smooth bend in that intake you have there. That abrupt 90* makes for turbulence and is not good for optimum flow ;)
 

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chimmike said:
Firedragon, you might gain a little torque by making a smooth bend in that intake you have there. That abrupt 90* makes for turbulence and is not good for optimum flow ;)
True true

You should be running better times , especially with those cams and ecu tuning. Where did you get the cams. Nice ideas so far. Let me know how you'll upgrade teh ITB's with the GPZ1100
 

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Discussion Starter #13
Hi guys - heres the wierd thing - I have tried various different bends on the intake - and this one just seems to work - in some cases I even lost as much as 8NM's of Torque... This just shows me that the singe throttle body design on this engine is far from ideal - hence the GPZ throttles.

I will post pics as the project goes on - I will either convert my existing intake manifold to accept the new Throotles or have a new manifold made up.

If I re-use the existing I can keep the injectors in their current position and re-use. If I make use of a custom intake I will have to use the GPZ injector positions - the Nissan (Datsun) 280ZX injectors seem to fit there perfectly and then I just need to sort the fueling.

Does anyone know where I can get 280ZX injectors or similar?
Does anyone know where I can get a universal fuel rail to adapt?

Does anyone have any specs on the GPZ 1100 TPS Voltages?
 

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Discussion Starter #14
Hey guys - heres some pics on the ITB's - picked them up today...

OK - will re-use my injectors and fuel rail - just have to clean them tonight and see if I can transfer my TPS onto them. Any ideas on what to do for vacuum lines?





 

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check for TWM induction .. they got loads of stuff for custom ITbs...

nice project btw..
 

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Discussion Starter #18
Apparently over in the states you can order cams straight off the shelf? Is that correct?

We order from a cams specialist - in my case MasterCams - they then take Billet Forged Cams and cut them to any degree you desire - anything from a mild 262 to a very wild 306....

They then also do the shimming on the head to suit the cam - all in all works out to R3200 a set (+-$550)

How does this compare to over there?
 

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Discussion Starter #20
It seems more or less the same ZAR 5.80 = 1 US$

They sometimes also take your standard cams and machine them to any degree you want - but the lift durations arent nearly as good - this is considered the cheap alternative as no shimming is required an comes to about US$ 220

But the performance route is definately Billet Cams
 
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