We have just recently finished another GT30r build. With the response and the power potential, the 30r makes for a perfect street car. In this build we started with Brandon’s clean 92 integra gsr. The car came in with a bad motor and crank, which posed a problem as a mint b17 crank is hard to come by these days. Luckily we usually have a few spare blocks and cranks in our engine room, just for such rainy days. So, we grabbed a sleevable b18c block and a good crank off the shelf and called up our friends at Laskey Racing. We told Mike Laskey to set us up with an 83mm sleeved Benson block. We love the Benson motors for street cars, for they still utilize and open deck design allowing for optimal cooling around the cylinders. Next was the head, which had seen better days. The original 92 gsr head had seen some serious wear and tear, after all it is 17 years old. Basically just the core was used, as we replaced most of the rockers, all the LMA’s, new valves, springs, retainers, and cams. Mark Atkins at Applied Flow did a great valve job and also replaced the valve guides while he was at it.
Since we had sometime while the motor was shipped out we decided to do a little tranny work. Paul our engine/transmission builder cracked open the case inspected the trans. and installed a new Autotech Wavetrac limited slip differential.
3 Weeks later the motor and head were back for assembly. We choose 83mm CP 9:1 pistons, Manley Turbo Tuff Rods, and ACL race bearings for the bottom end. Put those parts together with a Benson sleeved block and you now have the recipe for an 800whp+ short block. In the head we choose Supertech Springs/retainers to handle some extra revs and oem ITR cams which have worked wonders for us over the years.
Next came the fun stuff, installation, turbo, tune! The motor and trans. were dropped in, but not before a Stage 5 Competition Clutch was installed, followed by DSS Stage 2.9 axles. This DA received our off the shelf ram-horn manifold, downpipe, and 600hp intercooler, with custom charge piping, and a 3" SS exhaust system.
Tuning was done via Hondata S300, an AEM UEGO, and a boost solenoid wired into the Hondata. Now the interesting stuff, since the customer had built pretty much everything engine, drive train related, good ems, we figured it was time to try something new, injectors! Injectors might not seem too exciting, but the new Bosch 1000cc injectors modified for Honda use is a big deal. I have never in my life seen such control of an injector of this size. One can idle the injectors at 16:1 @ 900 rpms without it hunting, and with suck finite control the drivability is like that of a stock 240cc.
After careful tuning and cam gear adjustments (Golden Eagle Gears FTW) Brandon’s car ended up making 425whp @ 16psi on 93 octane, with great response and top end. Since its frigid here, and the car is going to be driven only in spring, summer, fall, we are going to wait until April to do a clean up tune and race gas tune which should net well over 500whp.
Brandon knew what he wanted and went for it, the most reliable modified car he could build, still being street able, with intentions of daily driving it during nice weather. I think he got just what he bargained for.
