what is the maximum torque/Bhp that the stock engine internals, injectors and gear box etc can handle.
Current mods include custom 2.75" full turbo back exhaust, Corksport SRI and TIP, CP-E HPFP, CP-E FMIC and custom ecutek tune running at 310Hp/360Ibft ( on dynodynamics flywheel figures)
Rather than going big turbo, im considering fitting a progressive nitrous injection kit to my car. nothing crazy, just a 25Hp or 50Hp shot from about 3500rpm-6000rpm with a proper progressive controller module to custom set it up.
would this be a bit dodgy on the standard rods
cheers guys
Sy

well, i know 2XS has a car with stock internals running at over 250fwkw (~325wheel hp) so i guess it's possible
wouldnt know for certain
to the forums btw
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cheers mate.
i know the Hp wil be well wihin the limits. its the torque that im worried about. the 3 nitrous'd cars ive seen have all made about the same additional torque as the HP gain.
if its already running at 360Ibft, could it manage another 50Ibft or more? if i could get away with a bigger shot say 75Hp max id comsider that, but then were talking potentially 435Ibft of torque and i dont really want to start bending rods or snapping transmission parts etc
SY
Last edited by vRSy; 30-08-2010 at 07:45 AM.

Have a look through the blown engine theory thread.
It's not going to answer your question, but it is interesting.
There are plenty of stock engines blown, plenty of modified aswell, so I don't really think there is a clear answer to your question.
Question for 2XS if he reads this, or for anyone else that knows.
He has a different turbo right?
And a different wastegate?
If so, and he's running that power without failures, that could lend even more weight to the sticking wastegate theory of blown engines
duglet liked this post

Nitrous is dangerous. From what I am led to believe, nitrous can ONLY be used at absolute full throttle. It can't be fed in on a slight take off for example. It HAS TO BE FULL THROTTLE ONLY, monitored by a switch to tell the controller you have full throttle. Nitrous is a science so be very careful. Call some places that specialize in Nitrous first. And remember, Nitrous is illegal on our streets. Can only be used on the track.

these cars above 320-330whp u start to run into trouble. troy knows his car, what he is doing.if ur running 310hp 360lbs atw ur on the safe side of rod throwing! put the money into pistons and rods, wind the boost to 20+psi with aftermarket turbo u will do 400whp and be safe

THE 'UP YOURS MAZDA' LIST:
Cpe DP - Cpe HPFP - Cpe TIP - 2XS SRI and Heatshield - Sure REM - 2XS Rear Toe Arms - Redline Bonnet Struts - Hyperflow TMIC - DBA 4000 - Remsa Pads - HEL Braided S/S brakelines - RX8 GT Rims - Hankook Ventus V12 Evo 225/40-19 - Ecutek Tune 214kw/406nm ATW @ 15psi

Plenty of 255hp at the flywheel (aka standard) engines blowing as well. So ITS NOT the amount of power being produced. But higher power can certainly add to the problems.
Again, read the blown engine theory thread.

key here is FORGED PISTONS AND RODSDO IT
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what is that in flywheel horsepower. our dyno's always give figures at the flywheel.uke 3mps
these cars above 320-330whp u start to run into trouble
its not dangerous when used correctly. i would also be using the top of the range controller so id be able to set up exactly what amount of nitrous gets sprayed in each gear and in what RPM range at what throttle input etc. plus it would be set up on a dyno to check for knock and fueling issues. it also has built in cut offs for the event of to much knock, fuel starvation etc.Grajy
Nitrous is dangerous. From what I am led to believe, nitrous can ONLY be used at absolute full throttle. It can't be fed in on a slight take off for example. It HAS TO BE FULL THROTTLE ONLY, monitored by a switch to tell the controller you have full throttle. Nitrous is a science so be very careful. Call some places that specialize in Nitrous first. And remember, Nitrous is illegal on our streets. Can only be used on the track.
Id be using wizards of nos to install and set up the kit i i go ahead. Also nitrous is legal for use in the UK roads though mate
what would you reccommend for strengthening the engine. just uprating the piston rods, or do both the pistons and rods need to be changed. this would involve me having to get a another tune due to the compression ratio changing though
also where is the engine failure thread? cant seem to find it.
cheers for the replies guys