UPDATE: 5.5agze 20v coming Spring 2015 by gaijin_rokurunner

6 minute(s) of a 106 minute read

Im deployed heading to afghanistan in 2 weeks so didnt get a chance to get it on the dyno..will have to wait until i get back in May!

Im Navy will be doing COIN ops from Camp Sabula-Harrison also running the range there

6-12-2014

Haven't had a chance to update anything here since I left for my deployment but now that I'm back i can finish up.....so engines in and runs great needs a little bit of fine tuning which I will be doing soon, suspension is dialed in...took the car for a spin and she is very fast and torquey...had a flat spot in power around 7500 rpm and realized my exhaust is to small...had JSP make me a custom 2.5 transitioned to 3 inch based off advice I got from Moto and Taka...results are outstanding like usual 

Will post a driving and dyne video once the exhaust comes...

8-7-2014

yes i notice it revs more freely throughout the power band now... before there was a flat spot at about 7500-8000 where i could feel the old exhaust was at its limit....cant say for sure how much hp gain it makes as i have not been to the dyno yet but i can feel an improvement....as far as my low end power....its a stroker setup so my low end torque is higher at 2000 rpm than the blacktop had at peak so no lost there....

12-27-2014

Yes ditched the hytech header and went with the FA spec JSP header after speaking with Moto and Taka. InitialB, the ferrea valve train is just a custom improvement of the factory valve train, lighter, stronger and a different tulip design....

UPDATE: 

After a working out the bugs of the engine finally got it on the dyno and more issues presented itself so after 2 years of trying to get a full race engine to run right i threw in the towel and decided to go a different route which will produce more hp and be a lot more street friendly. Heres the last dyno run with the car, had some very bad ignition issues and the plugs ended up getting fouled with no replacement on hand...didnt get a clean run so no hp numbers were documented but it sure sounded good up to 9800rpm. View My Video

Heres a few pics of it all done

So the plan for the rest of the winter is to instal a new rooters supercharger....took me a while to decide on this or the beams and i decided to stick with the 4ag. Some of you who have known me for a while know that this car was a recreation of the supercharged 86 i had in Japan...only difference is the one in Japan was kouki and this of course is zenki...and the one in japan was supercharged. So getting back on track i decided to follow through and supercharge this one. I opted for the Raw supercharger kit out of England and since nobody has successfully supercharged a 20v besides them this will be a first. Engine will stay 5.5ag but the compression is moving from 14.1 to 10.5, head will be blacktop but using the CNC development from MRP with 1mm oversized valves this time. Cam are down from the toda high lift to the tomei poncams as I will be using VVT on this setup...header is JSP and exhaust is also a custom JSP 3 inch. Haven't decided on an intercooler yet but it will be something small as the rotrex has a independent oil system and is only attached to the engines intake side by a bracket at two points which minimizes direct heat soak from the block like the gze did. Not being a traditional roots style charger it doesn't produce the same heat so I don't need anything really big to cool the charge. More than likely i will be going with a custom JSP intake plenum for the ITBS and retuning the Adaptronic ecu. Supercharger size is the C30-94 with a 105mm pulley and a custom 120mm BHJ crank pulley which will optimize the max rpm range the charger can operate at and still make boost which will be 9700rpm. For those that don't know about rotrex its completely different than roots style chargers and will create boost from idle to redline unlike the other chargers. Anyhow waiting on custom pistons now and my head...block should be in the shop around mid February and back in the car around march ready to go to the dyno for tuning.....the C30-94 is capable of 400 hp....Raw in England made 305bhp/245lbs/ft on a silver top using 9.5 c/r blacktop head and cams, aftermarket rods and pistons, 90mm supercharger pulley with an aftermarket ecu on 95 octane....with the 5.5ag I'm hoping for 350-380 with 300+ lbs/ft of torque as I will be capable of more boost from the bigger pulley on the charger, higher c/r, cams and 200cc more . See what happens. Heres a picture of the moc up..making sure everything lines up and seeing what needs to be modified....as of right now my custom moors pan is going to have to come off...the alternator sits to low and hits the intake wing of the pan...