GR Corolla build for Nemtec Racing! 

no wonder nemtec been so quiet on their build. thanks for all the info, i learned quite a bit

This is awesome!!! Not sure how I stumbled upon the video, probably my Nemtec feed!

Much appreciated on the heads up here. Its very concerning to me that one of the kits is more than double the price of the other and was made by the manufacturer to be paired with their aftermarket cams. I went with the cheaper option B, and it makes sense that i got what i paid for, though its still a pain in the ass. Looks like ill be waiting to see if this new kit comes out any time soon instead since my head is still currently off the engine.

Dave! Work your magic on this new head - it's always a treat to see your wisdom and experience in action ❤

Great video! TLDR: Watch out for coil bind in your valve springs but also don't operate too far away from it :)

I think Lamspeed racing have solutions as they’ve done a lot of r & d on the GR Yaris which the 3 pot originated from ,they’ve currently pushed the boundaries on the GR Yaris pushing close to 1000hp at the crank .

OEM head ports are getting really really good...

Great to see you still at this Dave! (Been out for a few years) left H-T in 2010, but back with a GR-c !!!

Well I know who I'll be calling for head work when I want to break open my G16E-GTS. Currently just a bunch of bolt-on's and waiting on an intercooler before I get tuned, spoke to John at Nemtec and they will probably be helping with that. Supposedly with the few bolt-ons I have installed valve float may be an issue and I've seen the issue with the GRY where the rockers were coming off their perch and causing all kinds of havoc so I'm a little paranoid now. Great Video!

The “scalloped” portion is to direct air at a more shallow angle to create a higher pressure zone to increase tumble at low rpm in low lift area of the cam. It allows air to leave the port earlier and faster. I use a different technique in the Civic type r K20c1 to open the port while keeping really good low rpm airspeed to keep tumble. Air entry in direct injection is a totally different ballgame and to many companies just hog out heads and lose power cause they do it wrong. Max cfm doesn’t mean max hp.

this was excellent info and I plan to do valve springs at some point and thought they were pretty much plug and play.

Thanks for the information.

Shows why R&D is important and reputable companies charged a premium for tuner parts. Too much Amazon, Temu, Aliexpress chinacheapium bulk crap.

You should make another video with product with actual problem. People can infer based on video and it protects consumers. Good for GSE for building a spring kit.

Please dont tell me its a kelford spring and retainer loc with the issue as ive built one running 800hp reving to 8400rpm so dont want potential issue 😬

Both

Less intake valve. Why not install titanium alloy valve with standard spring.

What about sr 20 det heads vs VE Would be great to flow test a CA18Det, they sound much better than a sr

🇦🇬 ⭐️⭐️⭐️⭐️⭐️. 🙇🏾‍♂️

Is that condition that occurs too far from coil bind called Spring Surge or is that something different? I'm pretty lost with performance stuff. GSC sounds like some great folks. Seems like they make stuff as right as possible instead of close enough like most

Let's say for example that I already bought unnamed spring A, do you think they would be useable if I installed them with the OEM locks and not the supplied locks?