2013FSport

iTrader: (2)

I hate to burst anyones bubble but Ford had a 427 ci that had sodium filled valves in the 60's...

Like these engines, 4 bolt mains and crossbolted from the outside... It was a cast iron beast.... technology has come a long ways as has manufacturing technology. Welding cam lobes to hollow tubes to reduce reciprocating mass. My street bike has these....

FORD SOHC 427 read...
http://www.hotrod.com/articles/90-da...hc-427-cammer/

lobuxracer

iTrader: (2)

Yes indeed, there is little in the 2UR-GSE that is unique from a technology perspective. The 2GR-FSE had the dual mode injection technology, and that was the most modern adjustment found in the 2UR-GSE. I have a sodium filled exhaust valve from a Nordberg 1600 hp engine built in the '70s - a stationary generator set. Generally speaking, motorcycle engines are at the bleeding edge of technology for the masses, and automotive engines are 10 - 20 years behind. Most of that is because the motorcycling public is far more tolerant of "issues" because the engines in motorcycles make stupid hp/liter compared to cars. Ferrari is all proud of making 125hp/liter, yet a 1000cc motorcycle is making over 160 hp these days straight from the factory before someone like me has had a chance to blueprint it.

Nordberg valve on the left, Mirrlees piston on the right.

2013FSport

iTrader: (2)

Ahhh - wtf? Not a gas engine piston there....
At least I hope Not!

ForzaF

iTrader: (3)

200hp seems the norm now a days for bikes, bmw s1000rr, kawi h2
then there was for the street 2015 honda hrc rc213v-s with race trim of 215hp at a hefty $180k large

lobuxracer

iTrader: (2)

Yes indeed. With two cams which can be independently adjusted for lobe center, duration only really changes overlap unless you've changed something else on the intake or exhaust (or both) sides to impact the inertia of the air movement into or out of the cylinder and you've chosen a longer duration to take advantage of this. Intakes open BTDC and close ABDC in all but a very few cases. Exhausts open BBDC and close ATDC except in all but a very few cases (like Atkinson cycle engines), so adding duration to an existing configuration is really all about overlap and nothing more because you're going to get more of it if you add duration or less of it if you subtract duration. Overlap's job is to use pressure waves to scavenge and load the cylinder better. More overlap favors higher rpm torque peaks, and less overlap favors lower rpm torque peaks. If someone figures out how to make a reliable electronic valve actuation system before electric motors take over, we might actually have some surprisingly powerful engines from idle to redline.

It's not rocket science and isn't nearly as complex as the gas flow technology used in high vacuum environments like the cryogenic gas separations lab I used to work in.

2013FSport

iTrader: (2)

Although not the best tool for the job more PID values are poppin up and with a bit of work the torque pro app will spit out the cam angles. Tho I have not seen the actual values to do it.

That said, the trans PID is out there for temps and torque can be used to to do that fluid dump everyone enjoys...

Leander311

iTrader: (2)

Oh you mean like Lexus did for the RC-F/GS-F/LC500 incarnation? We have an aftermarket... It's called Lexus.

Honestly, I wish we had the fuel system improvements over the cam differences... Seems to be the overall limiting factor for power on the IS-F incarnation, not to mention the ring land weakness.

Icetrai350

I have found a company that makes regrinds for the 2GR-FSE the company is called MWR (monkey wrench racing) they suggest upgraded springs but I could see decent gains from a cam because these cars make power up high and need the revs and to pump more air in and out. 995.00 usd it looks like plus a core charge of the same or you send in your own and just pay the 995.00+fees. They offer stage 1 and 2 cams. https://www.monkeywrenchracing.com/p...-engine-parts/

liquidtek

interesting, curious to see who takes the plunge.

ultimase

That's the V6 motor commonly found in the IS350, GS350, GS450h, not the V8 in the ISF.

lobuxracer

iTrader: (2)

And those cams are conventional. The IS F's 2UR-GSE has cams that are built up from parts, not cast and ground. You might be able to trim the base circle and get something, but then you'd have to be sure there are shims available that are thick enough to work with that change. And again, the real issue is knowing what you are planning to do will actually make a difference. Without a lift map of the flow through the ports, you really don't know if bigger bumps will do anything more than over stress your valve springs.

Icetrai350

Yes I am aware. If you follow the link itll take you to the 2ur stuff. I believe they have stuff there as well.

lobuxracer

iTrader: (2)

https://www.monkeywrenchracing.com/p...-6-5-0-5-7-v8/

Nothing for the 2UR-GSE. 1UR and 3UR.