so who is running nitrous on there cossie's and what sort of mods would you do to the engine to make it safe ?

 

cue rod

 

...and Chip, who knows a thing or three about the stuff!

I have Nitrous, but not hooked it up yet - waiting for me to do my winter rebuild first!

One thing I do know, any weakness in your car and nitrous will find it - you need a strong engine, healthy clutch etc - just like any other form of power increase really. It's also not so much of a 'black art' as some people will make out.

Ł for BHP it's very good if you don't plan to use it all the time!

Simon

 

the car is having new low comp pistons,reworked head and manifold and all new bearings etc but it will still be on std rods and crank. so is it advisable, or is the std stuff up to the job (if in good nick of course)

 

Not got my car done yet but it will be on Nitrous, My engine is a similar spec to what you have though and I'll run upto 100bhp on it

know plenty of people running similar specs locally with 100 shot without any problems whatsoever, occasionally as pointed out the clutch will let go if its shit and some people have broken diffs when launching hard but thats normal for a cossie anyway without nitrous.

Steve Bennet (therapidone) I think is the one to speak to, he has had plenty of experience with nitrous on his old Cosworth with good results,

Wouldn't really say Rod is a good person to talk to as his engine is far from standard and built to take much more than a bit of nitrous, Chip will without doubt know anything else you need to know I think

 

Standard stuff is fine as long as you don't go mad - on a well specced/built/designed engine (such as for example Rod Tarrys) he can run 150bhp, possibly more with no issues.

On a car with tired old parts, or with an already iffy head gasket 50 bhp might be 'the straw that broke the camel's back'

Basically a healthy Cossie engine should happily run 50bhp, and more with a controller and sensible basic uprating of parts - you'll find most likely that your ignition system will be one of the weak links - you need a good strong spark for Nitrous - something a lot of Cossies lack, hence the popularity of Stu's Coil pack coversions!

My advice: Get your engine checked over by someone who knows about healthy Cossie engines! Only fit nitrous if you're confident everything else is up to it - good tyres/brakes, healthy clutch etc.

Take it in steps = start at 25 bhp and only go for more power if you're sure it needs it and it can take it!

If you can afford it - do it... I'm going to!

Simon

 

50bhp ! you big girl!

fair point about igntion systems and Stu's coilpack kit is certainly a good purchase and something I will be looking into nearer the time.

My xe nova is coilpack anyway and I never get any misfires unlike the older dizzy engines

 

I'd rather "happily run 50bhp" than fix a car that was "okish running 100bhp"!

Yep I'm a big girl!

Seriously though mine will be running 100bhp on a Maximiser set up from Wizards of NOS, but only when I know my engine is mint. Currently I wouldn't put 25 bhp in and expect it to last. But that's my current rattly engine.

Like I said, all depends on the health of your engine / depth of your wallet / proximity to Chip and his mad ideas!

Simon

 

well its being built for 400bhp without nos, but it has a wrc 8 injector manifold with the nos ports already in.

would be a waste not to use them lol

 

If you arent on coil packs you may struggle to ignite much nitrous on top of 400bhp of cylinder pressures in the first place, nitrous is VERY heavy on igntions.

 

You could also run an MSD 6 CDI pack on your normal single coil setup, i ran 500bhp + a 75 shot of gas, no misfires with that setup

Also, buy a bottle warmer! The pressure in the bottle has to be at a certain level to make the system work properly, in cold weather like this you will be lucky to get 500 psi, the system won't work properly in these conditions and you get misfires!

 

You could also run an MSD 6 CDI pack on your normal single coil setup, i ran 500bhp + a 75 shot of gas, no misfires with that setup

Whats this then, WES, just beefs up the std ignition set up, is it a straight bolt on part only or?

 

No need for me to say owt just listen to the big fella he knows more about it than anyone else on here. Ive learnt a lot by asking but mainly listening.
Rod.

 

thanks lads, nitrous it is then

think the coil pack conversion would be a good idea, when it is available

 

whats he reckon on your nitrogen push system then rod?

puddy

 

Nitrous is safe as houses as long as it's set up right...

By that i mean using Wide Open Throttle sensor (WOT) and a window switch which means the gas is only active between certain rpm's.

i.e 3000-6500 etc.

If you bring it in too early there's a risk of bending rods...

Also - have it set up on a rolling road with the use of a wideband lambda sensor - the way i used to do it was to braze the jets with a blowtorch and flood them with solder - then drill them out at 0.1mm intervals until it made good power under safe fuelling...

If i went too far, not a problem, back it off and then refill and redrill...

All this '50bhp shot' and '75bhp shot' stuff is absolute bollocks - i've never yet found a kit that safely makes the 'listed' power straigh away, its normally a lot under...

As with anything - if you do it, do it properly and it won't fuck you over

 

As chip says ignition is the make or break and just dont get to greedy. I can supply All MSN parts should you require anything.

 

He introduced me to it Puddy.
250+ shot @ a continuous 1000psi . Its got Mark worried we could be very close to the magic 1000bhp.

 

Please change the name of thread to:

Who cheats and runs NOS?(Not for people who cant put jets in the right way!


BRING IT ON.

 

If you are going to cheat make sure you are the best at it.

 

whats with the jets thing phil? pm me if you want....

 

i do wonder why dont more of you run nos on your cars especially people who are into drag racing.
turbo charge cars just love nitrous, imagine its a hot day down the pod other cars are suffering from the heat but you never having to worry about hot days due to the cooling effect you get from nos.
never having to worry about det because there is no chance of this happening on gas, and the huge increase in power just from say 50 shot of nos, i have seen on turbo cars as much as 60bhp and 80fbt from just 50 shot.
possibly shaving a second off your times and increasing your terminal speeds mine you if you are going to consider purchasing nitrous there is only one kit i recommend and thats wizard of nos.
after running nitrous for the past three years i'd say for a turbo car its a must have mod NITROUS DOES'NT KILL ENGINES IGNORANCE DOES

 

Phil is on about the only time i was ever wrong, when i thought i had made a mistake but i hadnt


At totb i fited a set of jets on robs astra between runs, the correct way round, whilst talking to about 4 different people at once (never a good idea trying to explain things to lots of people at once when you are busy!), then went "oops, wasnt concentrating, i fitted them back to front" (when i hadnt) and promptly swapped them over to the wrong way round Rob ran a lovely 15 or something running richer than porkie on a night out

Phil seems to think thats a big deal for some reason, although ive honestly no idea why personally, especially given the circumstances (lack of sleep, rob broke a cambelt 3 days before the event so we were really rushing to get it finished, i only set up the boost etc at 2 in the morning the night before, got about 3 hours kip then got up in the morning, drove to the event and then started the nitrous install in the pitlane) still, when i swapped them back it ran the quickest time ever for a UK astra and got 5th in class despite having no time to set it up, so alls well that ends well.

 

Chip why do you always write a novel when trying to explain cock ups? ...i think what this thread needs is yet another Chip photo just to make sure everyone knows who he be.

 

Phil i dont write it, its the only mistake ive ever needed to explain so every time you drag it up again and again i just drag out the same reply each time.

Thanks for stalking me though, much appreciated

 

 

Fair point Chip

Phil- I'm quite sure someone could dig out enough mistakes you've made most probably.

 

Only if they were stalking him to bother recording them i guess.

Still amazes me he remembers something so totally minor from 6 months ago when he wasnt even there, took me ages to remember what he was on about myself.

 

Good point, does he even live on our planet ?

I'll always remember the jets thing but its more for the re mapping remark from the commentator,

quality day out that was

 

PMSL, yeah i remember that one now.


"hmm, looks like they have been playing with the map on Rob's astra, its definately running richer"

Fair play to TOTB for actually having a commentator who knows enough to understand what was happening

 

heres mine.not a cossie i know,but its something different.




bryan

 

Bryan, i recognise the name "dangerous" from the nitrous forum mate, small world!!


Do you get a slight "hiccup" as you back off the gas on that setup?

Or are you running a pretty small percentage increase anyway?

Cause if you are on a big shot (ie over 50% power) i wouldnt be surprised to see a bit of an excessively rich situation briefly due to the pipe lengths, they could do with being a touch shorter if its possible ideally. (not always that simple though i know!)

 

only running an extra 100hp at the moment chip so not to bad.as it is the solenoids get to hot where they are at the moment.i asked trev wether they would be better mounted on top of the inlet manifold or inside the airbox.
he said inside the air box,but this would add the length of the solenoids to the pipe length.so i might have to try on top of the inlet manifold any way and see how hot they get.
bryan

 

love the tartan rug!!

 

is there nowhere on the passenger side of the bay you could mount them?

Got a picture from that angle instead?

 

no room at all on that side chip.another exhaust manifold for starters so its just as hot as this side.plus the abs pump,power steering reservoir and oil filter housing.i think i will try taking the bonnet insulation off and see if that makes things any cooler.
rapidcossie:- thats my bottle warmer.

bryan