CA18DET and Nitrous???

[s13drifter88]

Does anyone know what the CA18DET can stand up to as far as Nitrous goes. Im soon to be running a "Special" Garrett GT2871 with Nistune and other misc bolt ons but im curious as to what the CA will tolerate Juice wise? ive searched with no decent results so now im asking. Im thinking of running a Zex 2 step system... 75 wet shot on top of a 75 wet shot while feeding with deatschwerks 750's

[Frankenfourty]

Theres not really a magic number for nitrous. Its more of "my engine can handle 400hp.....300 from boost and 100 from nitrous" or "my engine can safely handle 500hp.....so I can run 425 on boost, and 75 from nitrous. Its not an interchangeable number and it depends on your build.

[zmannz]

You have to tune really well with the bottle installed and functional on your car to get the most from it. I have set it up before to be a sort of air buffer at high rpm's, so that if I was going to use the nitrous on a run make it kick in at x% throttle or engine load. I used some EBC components and megasquirt to make a controller. That was the best way I found to get my car to keep the most timing under boost at high rpm for a while. I could have made more peak power with a different setup but more nitrous too. I also did an integra with a buddy once like you are talking about on an NA b series. The car might have had 150hp before nitrous. We put a headgasket kit, phenolic spacer, and ARP head studs on it and a "cold air intake" and a nitrous express 100 shot kit. After running it about 5 times and datalogging in chrome, we chipped the car to handle the nitrous and ended up making close to 300 whp a few times in a row. That car lasted about 2 weeks after setup before he managed to run too hard.

[s13drifter88]

well im soon to be running Nistune and after te bottle is installed me and some people are taking a trip to Z1 Motorsports in Georgia to have them tune it. My mod list is CA18DET, Garrett GT2871 (Customized), Cometic Head Gasket, ARP Head Studs, Deatschwerks 750's, Tomei Poncams, Ported Intake manifold with 65mm throttle body, tubular turbo manifold, HKS EVC6 boost controller with Easy Write software and 3" apexi turbo back exhaust. i should be done with it in a few more weeks if i'll get off my lazy azz and do something. its hot in Alabama lol. My power goal is to break 380whp without juice so if i make 381whp im happy. I know the lower deck will hold it but should i just go ahead and spring for ARP main and rod bolts too?????????

[themadscientist]

cylinder pressure is cylinder pressure. If you don't knock you should be fine.

[D_Stirls]

The biggest power i have seen down here from a GT2871R is 274rwkw (~360whp)on an Built SR20 running E85.

Most people down here on pump fuel with a GT2871R are making 240-260rwkw ( ~320 - ~359whp). So with Gas i see you pulling the 380 but going on what i have seen you will be struggling to make 380 without it. But i hope you prove my thoughts incorrect.

[dash]

what could possibly "special" about any 2871 ?
Still won't outperform a t3/t4 at a fraction of the price - lol.

what is the nitros for..... chasing another 'peak hp number' ?

spray increases torque dramatically. Some CA18s have bent stock rods without it. Good std bottom ends getting too rare to 'experiment with' imo.
With such a nice setup, I'd concentrate on maxing out what u have via solid tuning, rather than complicate mattters with spray.
These little motors have proven surprisingly capable with boost alone, even on stock bottom end. Good luck.

[s13drifter88]

its getting a custom chra and exhaust wheel done by a guy that is really good friends with the owner of a local shop here in town. spray is just for fun, more of my personal preference for my own enjoyment. ohh and btw i was hoping to break the 380 mark with VP110 but for pump im really not looking or expecting anymore than 320 or 330ish. i have access to VP110 cheap and in almost any quantity i want, enough to almost DD for about 4.25 a gal but is no means my intention. and a guy here in town has a 97 s14 with a black top sr with a 2871 .86ar with hks step 2 cams ect ect and he did 407whp on a dyno dynamics although im sure that 2871 was running extremely hard

[r34 gtr]

Well hey there, any chance you want to point a fellow Alabama CA18 owner towards this $4.25/gal VP 110? I NEED to run some through my YZ50 aka "the death machine" aka "the widowmaker"

[float_6969]

The principals are still the same with the N20. As long as your AFR'S stay in line when you're in the juice, and you're able to adjust the timing when you're in it, you shouldn't have any problems. Just keep in mind that N20 drastically increases the speed of the flame front in the combustion chamber and you WILL need to run less timing when you're spraying than otherwise. This is especially true with boost.

[s13drifter88]

its not any store that sells it, well not this one anymore. my dad used to own a boat dealership in wichester tn and he did a lot of drag racing with ODBA or Outboad Drag Boat Association and he had a pretty large stock of VP110 which is the unleaded race gas that had to be run in the Mercury and Yamaha race engines and since he had to close the dealership 2 years ago he told me i could have it for 4.25 a gal. not a bad price since around here its 65.80 for a 5 gal can of VP100. where i got to school at Calhoun we have a small air field called Pryor Field and they have 130 low lead but idk if they'll let anyone come with a gas can and fill it or what it would cost if they did coz idk the cost of av-gas

[float_6969]

av-gas will ruin your O2 sensor very quickly. Both narrow and wide bands.

[s13drifter88]

really? a buddy of mine ran it in his 7mgte quite often for his racegas and never had a prob to my knowlege but idk where he got it from. local air field would be my guess. i think some of the newer fuel injected rotax aircraft engines use standard Bosch sensors and they run the same av-gas. idk, may be an interesting subject to read up on one night when bored