Jonathon Stark’s 10-sec­ond S14

NZ Performance Car - - 4 & Rotary Nationals 2017 -

Pop­u­lar as a street-sifter, the Sil­via isn’t of­ten the first choice of chas­sis in the drag scene among the am­a­teur ranks — per­haps as its lit­tle SR20 heart needs a bit of coin thrown at it to run de­cent times. How­ever, Jonathon Stark didn’t give two tosses about such thoughts, and, al­ready know­ing his way around the four-cylin­der af­ter own­ing mul­ti­ple Sil­vias and get­ting hooked on the rush of drag rac­ing, he knew ex­actly what chas­sis he would go with.

His cur­rent S14 has been brought to life by an an­gry SR20DET run­ning CP 8.5:1 pis­tons atop Man­ley H-beam rods that at­tach to the fac­tory crank via ACL Race Se­ries bear­ings. Up top, the heads sport Franklin Cams 272 camshafts along with Tomei valve springs and rocker-arm stop­pers. “I went with the dual-rocker-guide con­ver­sion to stop the com­mon rocker is­sues SR20s are known for,” said Jonathon. He used the stan­dard plenum and a ported DE throt­tle body, mea­sur­ing in at 68mm, with a plenum spacer to al­low for a cus­tom top-feed fuel rail. The rail con­tains X-Pert 1560cc fuel in­jec­tors that feed E85 into the mix, while, on the other side of the en­gine, you’ll find a Holset HX35 II bolted to a Sinco twin-scroll large-run­ner man­i­fold with a Tur­bosmart 45-mil­lime­tre V-band wastegate. Hav­ing chewed his way through a few stan­dard en­gines with melted pis­tons and, on the same card, blow­ing mul­ti­ple SR boxes, he wanted to build a stronger, more re­li­able combo, so you’ll now find an RB25DET bolted to the back with an Exedy five-puck solid-cen­tre clutch hid­den inside.

Straight away, you’ll no­tice the jacked rear, which is cour­tesy of a US-built Im­port Drag So­lu­tions S14 Pro rear drag kit and the 16x9-inch FD RX-7 wheels that are shod in 26x10.5 Mickey Thomp­son ET Streets. With all that power, slow­ing down af­ter a run ain’t an easy task, so the 14 has been equipped with GT-R calipers and 320-mil­lime­tre two-piece slot­ted ro­tors to get the job done.

Run­ning E85, it’s cur­rently pro­duc­ing 350kW on 25psi, and Jonathon has run a per­sonal best of 10.9s at 131mph (211kph).

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