stealth_GT

How much more cooler does the R2300 compared to the M90?

I really like the R2300, but the way it makes so much power(effortlessly) is intimidating .I already blew a motor on "only" 380ish whp (420/ crank?) and don't want it to happen again.

I don't mind making 420whp (90 octane gas) with the M90 and just keeping it as is without ever going into the motor, but I am worried that it won't run nearly as cool of an intake temp as the R2300.

Honestly, I am pretty content with the honest (after heatsoak) 350-355whp that the Vortech non-intercooled makes, so it makes me think that the M90 w/500HP VMP tune and possibly cams might be enough.

Please advise.

Acerbus 2.0

You blew your engine once already and didn't replace it with a forged assembly?


Shame on you

stealth_GT

lol at that point in time.. I just wanted my car back. I did the work, with alot of help so it was't all that much.

The V3 makes great power even non-intercooled and it's barely even pushing it in terms of power level. I am wondering if I'd be content with just the basic M90 kit, and then upgrade to the 500hp VMP tune later on.

I been doing some thinking, and I don't want a 600whp anymore.. I just want a fast street car (420-450whp'ish)



I have read of alot of happy people with their M90s.

Acerbus 2.0

That VMP R2300 kit was one of the first ones that REALLY caught my eye in terms of power potential vs. price. I can't figure out why there aren't more people running this kit. Maybe it's he fact that you HAVE to run this kit with Underdrive pullies to keep it from grenading your engine at stock configuration. For $5,600 you get 7-8 psi of boost (~450rwhp) with room to grow to 14psi with a pulley change which you already own (the stock crank). At that price, other kits are barely offering 435hp. (at the crank)

Just a guess out of my @ss but i'm betting the R2300 run cooler due to it's bigger displacement/air moving potential.

Justin00Stang

We now have the upper pullies available to control boost, so you run the stock crank and water pump pulley (which is much better). You can run down to about 7-8psi with a stock crank and 3.6" upper, or 10-11psi with a 3.3" upper.

If you blew the motor before, it was due to something stupid, bad tuning, or bad gas, or another failure. I have a ton of local cars running around at 10-11psi with whipples and P51 kits with no failures. Some get raced at the track very often, they all make 490-520RWHP. If you are somewhere that they only have 90 octane gas you may just need to run torco all the time.

Also, keep in mind, 7psi from an M90 and 7psi from a TVS is the same work done by the engine, one just sapps more power from the engine to drive so you get less power at the wheels.

stealth_GT

is there a way to tune for 90 octane ONLY with the lower boost setting on the R2300??

I race quite a bit during the summer, but for the rest of the year it's pretty much just putting around town..

Pretty sure I blew my old motor due to running too lean and boost surge.

I wasn't happy with the final drive performance (120 @3500 rpm in overdrive) with the overdrive on, so I thought it was a bright idea to turn off the OD and do a speed run. Thinking back, I had a huge boost surge around 5800-6100 rpm (125-138mph).. I also thought it was a good idea to shift the OD back on during redline while shifting in order to gain more gearing in final gear.. thats when the motor went.

)-:

top of the piston was cracked, cylinder was scored pretty bad as well as snapping the rod in half and messing up the crank. Never again! lulz

Been kinda nervous about boost ever since..

Justin00Stang

You could have a fuel supply issue too if the failure was during an extended period of WOT.

We could drop the boost to 7psi with the biggest pulley and i could do the spark tables for 90octane which is the highest you have there. with how good the knock sensors are in 05+ i can make that setup work well since the boost would be so low.

stealth_GT

That sounds like a good idea with the 7 psi and 90 octane.

So even with the modest 7 psi, I'll still be making more whp then the M90@ 7 psi because less parasitic loss and less heat generated because of the blower making that amount of power "effortlessly"?

Nice.. now the waiting begins...

Justin00Stang

Yes, it will put down 430-460rwhp.

stealth_GT

I know 90 octane isn't the best to run on a boosted performance vehicle, but once I do go forged internals and semi-built trans (reinforced input shaft/3rd gear synchros) will it be an issue to get the most power out of my new motor with "only" 90 octane?? There really are no other choices up here, and I don't want to run torco.