thank you, much is appreciated ! I will be taking a look on ebay for some heads and .most likely purchase one to be on the safe side !

 

well I spoke with a guy who's brother tunes out of Puerto Rico and his custom tunes revs the 2grfse at 7600rpms(stock cams). The RR tune I have revs up to 7200rpms. I will be looking into getting a custom tune and see if the 2gr would be able to rev out to 8krpms. The valve springs were made by monkey wrench from what I've seen on their website.

 

I took the advice and got an extra head , but I ended up getting a motor from another is350.

 

You bought a whole engine? Probably not much more than two heads! A lot of good taking this path as you can fit everything on a stand and not kill yourself being bent over the fender. Which, for a head swap, I'd pull the engine anyways.... I sure would like to fab a new intake. That said it would be interesting to know if the upper intake runners having matching volume.
I'll stop. So what is the plan?

 

Exactly why I bought the extra motor , and it also has 30k miles less than mine , which is a plus. The engine bay of the 2IS is a very tight space! I'm still waiting for the cams to be shipped by monkey wrench racing before I start dissecting the 2gr.

 

If you don't mind, what did you pay for the engine? Is it a complete engine? Not that I am buying one, just curious

 

I paid $1,400 for a complete engine.

 

Thanks, that's good to know. BTW if you ever consider super charging, take a look at the Lotus Evora. I saw one the other day and they are getting 400 hp safely out of a 3.5L Camry engine, so it is probably safe to assume that the 2GR-FSE will have no issues

 

I would love to see the power difference the cams make with the 2GR engine! I personally have not seen anyone else with them installed in the IS350 before.

 

True for all of us. Mine is my DD, hard to have down for any period of time. That said, I think the upper intake is really holding it back.

 

Here is the new motor that the upgraded cams will be installed in.

Here is the valve springs and retainers that i ordered from Moneky wrench racing (I contacted them to see if i would have to get upgraded keepers and they informed me that the OEM keepers work just fine with the camshaft upgrade), i am still waiting for the cams to come in so i may start the process. There is also the gaskets for the lower intake manifold that i ordered as well from Amazon. Lower intake manifold was ordered from ebay at a very low cost.

Here is the extra lower intake manifold that i will be playing with.

This is everything that I have so far. All that I am missing are the camshafts which takes about 4 weeks to ship. Don't worry guys , I will keep you guys updated on everything with this project and I'm hoping to help out my fellow CL members who are also looking to squeeze more power out of the 2GR-FSE naturally aspirated!

 

Watching with anticipation. I don't know why, it's not my build but I still feel like a giddy teenage girl! I guess these days I could be one if I so chose...

 

I'll have to dig up the boxes in my garage, but my assumption is that their springs are Crower part # 68195 (just googling, I could be wrong). I had to return one set because they were too big in the pocket, I wanna say that set was 1.060" OD. Again, from memory, so I could be wrong.

For the dual-TB 4GR intake, I have a 90-degree mockup mount for the ACIS flap to help me figure out where best to locate it, but the length of the flap is juuuuust too short to effectively reach all 3 sets of ports front-to-rear, so that's piled on top of my clutch stuff at the moment. The geometry of the ports is gonna be wonky as I'll need to squish them rearward, or I'll be making/modding my own flap. Got my truck running and legal this year, so I'll likely be buying an entire 2GR-FSE for the bottom end and letting my grinders sing the song of their people to the heads/injector plate for someone on here...

Edit: I'll do you one better, here's my chicken scratch proving that those crowers have a .06" float margin with 1mm shaved off the base circle, yeilding ~11.55mm of lift at the valve

 

Are you indirectly saying you know of a place who knows enough about metallurgy to re-grind cams and you trust them? I haven't looked at the specs but it seems you *may be implying the 2GR and 4GR springs are the same?

As for the Monkey guys making their own springs, I also find it highly unlikely. Do the crower springs list the RPM range? Spring technology has come a long ways as my 08 street bike (Yamaha) sings pretty well at 14,000 and with 50,000 miles on it, hasn't blown up yet!

Good to hear you're still out there tinkering... You complete the port job and valve clean up on the 4GR heads?

 

Well, I found a shop here in Conifer that was willing to take a stab at grinding them on their centerless grinder, and they had a set of my 4GR cams for the month of March, then COVID hit, they called to have me pick my cams back up, and I haven't seen any activity at their shop every time I drive by there...but either a centerless grinder or a 5-axis should be able to shave .5mm off for however many degrees needed. The big hangup for me is the vvt actuator removal and re-assembly, which I haven't bothered to attempt yet...

So I no longer think the MWR springs are the Crowers--the Crowers are just what I have in my ported heads right now--but a year ago or so, I found a spring that I suspected MWR was using (probably from a 3v Modular Ford or something)...even though it isn't entirely unheard of for someone to order a bulk batch of custom springs. I have no reason to believe the 4GR and 2GR valvesprings are different between application, though I don't have a 2GR valvetrain in front of me...yet. Yeah, the 2GR has a bigger valve and more lift, so it wouldn't be crazy for the 2GR springs to be a different spec, but I bet they still use a 26.5mm spring seat, the same 35mm installed height, and share retainers/locks. I'll know for sure when I'm grinding up a 2GR.

I never really stopped playing with this project, life's just been popping up lately. Had a middle school friend move in during COVID, which ended poorly and wasted a good 4 or 5 months of spare time that woulda been put into this...and it's not like I was moving at a breakneck speed at the end of last year. I mean, ultimately, I gotta find someone local with the appropriate toys and license to play with my denso stuff when all my physical mods are said and done, as that 6500rpm (or w/e it is) cut is gonna be the real turd in the punchbowl...or abandon ship now and start playing with 2GR-FE heads, knowing I can run those port injectors on a standalone. I also apparently can't mention the 2-stroke community I lost the legal rights to without the person who hijacked and killed that community having his illiterate AF lawyer contact me...

Anyway, my drama's stupid, back to the thread...