I am planning on putting NOS on my modified 2.8L. I have built my engine with the aproprait (spelling?) components for NOS. Which kit is the best and what is the biggest shot people have used on their cars? I have also purchased a spare trans for when this case splits. I know traction will not be a factor when launching at the track.But have heard many stories about blown cases, also seen the results of one done by too many burnouts. His 6000 rpm clutch drops helped it out as well.
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02:47 PM
PFF
System Bot
Fire451 Member
Posts: 314 From: British columbia, Canada Registered: Sep 2002
I use the ZEX p/n 82011 on my 87 GT. I only have it sat at a 55 shot since the bottom end of the motor has 122k on it. You can really feel the difference. On my desktop dyno it showed 293ftlbs at 2,000 rpm!!!!!!!
w/ 100 shot it was closer to 380ftlbs! WOW!!!!
Steven
------------------ 88 Fiero coupe 2.5 5 speed, Custom IHI RHB6 turbo equipped, gutted and track abused 88 Coupe Project "F-88" has begun....Classified TOP SECRET 87 Fiero GT 14.9/ 89mph **4.9 PFI swap in progress** 87 Fiero Coupe 91k miles **3.4TDC swap in progress** 87 Mazda RX-7 SBC v8 5.0L/700R4 ---FOR SALE 88 Mazda RX-7 'vert SBC v8 383/T-5 84 Fiero 2M4 T-top, Turbocharged and tons of extras! SOLD 87 Conquest TSi 406 SBC V8! SOLD **I am Looking for 88 coupe w/ auto trans near Va...PM me** Always have engines, fiero parts and accessories for sale. Custom engine swaps and chassis modifications are available.
If someone has this info I would appreciate it alot as well as I have a similar build as red4spd and want to add a 200 shot if possiable
200 shot is a little low , I would go atleast 250-300. JK
On a dry kit people have run as high as 125 shot , I ran a 75 shot on a 46K motor and blew the head gaskets.
stock motor that is well taken care of (mine wasn't) I wouldn't go higher than a 75. 75 was good enough to show an Lt1 F-body the taillights on several occasions.
Is Zex a wet kit? I would hope so with #'s like that. a 50 dry shot typically makes low 200's @ 2300 to 2500 rpm.
I would say my 75 shot put the car somewhere int he high 13's with no other real mods. just a CAi, accell coil and no cat.
I love Nitorus... did I mention that? Some people are going to tell you that you can't safley run it on a Fiero. 1FST2M6 ran a 125 Wet shot to high 12 sec 1/4 and Shaun41178 ran a 75 shot for 3 years on a bone stock , non rebuilt motor , he was low 14's , high 13's
JM
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11:37 PM
Standard Member
Posts: 4667 From: St. Cloud, MN Registered: Apr 99
I did almost everything I could think of. The list is like this, Forged TRW Pistons 9.01:1, Molly rings, Clevite bearings, ARP Head studs & rod bolts, performance 0.039" head gaskets, Comp 1.6:1 roller tip rockers, Comp 130 lb valve springs, custom grind cam .484 ex and .468 int. with 110 seperation if I remember correctly, Comp Magnum lifters, I cleaned up the heads, intake and exhaust manifolds, gasket matched everything, new timing set, MSD 6A ignition box (will be 6D soon), MSD Blaster coil, Aurora 8.5mm spiral wires, Heads decked .020" and block head surface resurfaced (maybe 0.003' off), shaved and realigned lower intake plenum to match, block was bored 0.040' over, crank was machined and oil galleries champfered (block as well), have larger SS Buick valves to install later, then the rest is regular stuff like sensors, lowering springs, shocks, struts, Centre force clutch, brakes, end link kits, park brake cables and probably lots more but can't remember right now. The machine work was almost $1000.00, assembly done by myself as well as instalation. Lots of good freinds to help with cleaning and instalation and preperation. Oh ya headers are on the way and new exhaust is installed and waiting for the headers to be installed. I also have a full front and rear control arm polly bushing kit to install later. I am hoping it will take a 150 maybe even a 200 shot of NOS. But my idea is built it to blow it up at the track. I will start at a 125 shot and see how it goes from there. I have been told by many that I am crazy to try it but hey you will never know unless you try. I did want to find an 88 crank but time was a factor and I couldn't find one quick enough, so I didn't get it all balanced like the other one I did. The pistons and rods were balanced but that is it. We also don't have any one locally that I can find to do shotpeening on the rods. Next time I will do custom rods from someone locally. I expect they will be about $1000.00 by them selves.
So what NOS or other systems do you nitrous gear heads recomend for this set-up? I was thinking about the Nozzle set-up by NOS for the 3.8L Rustang. The only factor there is big $$$$$ and how true are the shots or is there a better WET system out there?
------------------ Mike 86 SE Modified "RED DEVIL" NOS on its way
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12:46 AM
Howard_Sacks Member
Posts: 1871 From: Cherry Hill, NJ Registered: Apr 2001
Get a NX kit. Use the one for GM LS1,LT1, etc. I ran a 50 shot on my stock 2.8 which was good enough for 14s. I changed over to 4speed but never got to run it at the track, from the feel, though, I Know it was in the 13s.
NX is one of the most accurate kits as far as HP numbers. I would stick with 'em. I really wouldn't start at 125 is I was you. I would highly reccomend running a 50 or so at first just to make sure your WOT switch, solonoids, fuel supply, etc, are all working properly. Once you have verified the system is 100% operational and working as its designed, then crank it up.
You MUST run spark plugs that are about 2 steps colder. I'm running NGK, as are others, and they seem to work the best. Also, running that high, I suggest you invest in a high perf. fuel pump. You don't want to skimp out on fuel with that much nitrous. One last thing you may want to do is invest in some of the octane boost made specificially by the nitrous companies. 50-100 shot it should be fine, but up higher than that, whats a few extra bucks???
------------------ 19 Year Old Fierophile. R.I.P.--1986 GT Daily Driver, 4:10s, NX 50 Shot, Borla exhaust, ported manifolds, more goodies --1986 SE V6, Mostly stock W/Integrated rockers and COMING SOON: Intercooled Turbo!!! (possibly) --1984 SE 4.9, IMSA spoiler, Duel exhuast, GT rear bumper, Konis, drop spindles, Rear adjustable perch, Poly total kit, Poly cradle bushings, Big front bar, Added rear bar, 11.25" brakes on all corners w/SS hoses, Fancy wheels wrapped w/soft rubber, and much much more.
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09:03 AM
Will Member
Posts: 14300 From: Where you least expect me Registered: Jun 2000
As far as fuel delivery goes I think I have that covered. Like I said I was sure I was forgetting something. I did, I am using the corvette fuel pump and the 17lb/hr injectors from the Rustang. I also have a set of 19 lb/hr injectors waiting to be installed if needed. I think the 19's are a bit too big right now. I also have an ajustable fuel pressure regulator from Holley for a 5.0L Camaro. It works perfectly with the fuel pressure gauge I got from a freind. I will start the testing off at low shots of course. I have to learn this cars temperment with NOS before going nuts with it. I have had a few cars with NOS and each one reacted differently when injected. Testing will be done before track time. If at track time it seems like it will only take a 100 shot then ok we go with that. I have talked to a few engine builders here and they think it will hold up to a 200 shot. So that is my dream. If not oh well. Thanks for that last post. Good information. Enjoyable read.
------------------ Mike 86 SE Modified "RED DEVIL" NOS on its way
As far as fuel delivery goes I think I have that covered. Like I said I was sure I was forgetting something. I did, I am using the corvette fuel pump and the 17lb/hr injectors from the Rustang. I also have a set of 19 lb/hr injectors waiting to be installed if needed. I think the 19's are a bit too big right now. I also have an ajustable fuel pressure regulator from Holley for a 5.0L Camaro. It works perfectly with the fuel pressure gauge I got from a freind. I will start the testing off at low shots of course. I have to learn this cars temperment with NOS before going nuts with it. I have had a few cars with NOS and each one reacted differently when injected. Testing will be done before track time. If at track time it seems like it will only take a 100 shot then ok we go with that. I have talked to a few engine builders here and they think it will hold up to a 200 shot. So that is my dream. If not oh well. Thanks for that last post. Good information. Enjoyable read.
Mustang injectors are 19Lbs , I believe 3.1's are 17lbs. If oyu search you will find more info on swapping injectors , it's not always the best route. I spiked my stock FPR with a nickle.
bigger insn't always better. Several people have run stock injectors right into the mid 13's no problem
-just read through the details on your build up (nice btw ). Do you have any mods done to the intake & tb? I know that Darrell Morse has/sells Throttle Bodies & Intake manifolds (I've got one of these on my 3.1L V6 in my GreenGT) that have been bored out to 57mm (flows something like 18% more air). I also kind of recall Travis mentioning that he actually had his intake manifold decked (which would create a smaller air volume... I of course don't remember why).
Just a couple of thoughts since I know that the Fiero intake is generally somewhat restrictive (and is what causes most modded 2.8/3.1/3.4 V6's to "choke" on the top end).
I look forward to seeing what you can accomplish with the car- a 200 shot would be really impressive (in both ways, fast & if it explodes ). Best of luck to 'ya!
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06:45 PM
Fire451 Member
Posts: 314 From: British columbia, Canada Registered: Sep 2002
By the way Mike I think that your cam is 110 deg seperation, at least that is what we said when I ordered my cam up. See Red4Spd and I have identical buildups except for the cam and the boring..
I went with 0.060" over and a comp cams 260H cam, and I got the MSD Digital 6 ignition. I am hopeing that my engine will graciously accept a 200 shot of wet NOS and beg for more but that I feel is just a dream.
[This message has been edited by Fire451 (edited 01-23-2003).]
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