Pasmag (USA) - - BOOSTED & SWAPPED -

Fsome­thing spe­cial. Sohn fol­lowed through on that like a pro’s golf swing.

“Al­most ev­ery sin­gle part on that car has been swapped,” laughs Sohn. “I re­ally can’t think of any­thing other than the body, dash and en­gine wiring har­ness that is orig­i­nal. Lit­er­ally ev­ery­thing else, even the sub­frame, has been re­placed.”

Un­der all the hoods of Sohn’s ro­tary-equipped cars, each en­gine has only been touched by two peo­ple: Sohn’s and his en­gine builder, Luis Caniza­les. Sohn is very par­tic­u­lar about who he lets touch his cars, es­pe­cially when it comes to the Wankel pow­er­plant, so back when he was look­ing for a suit­able en­gine builder, he would bring an iron from a torn down en­gine with him to see if the builder could fig­ure out what was wrong. Caniza­les was the only one to iden­tify that the coolant seal was miss­ing. The fact that he has over 30 years of ex­pe­ri­ence didn’t hurt ei­ther.

“With this en­gine, I wanted to put my hands on it, so I went to Luis’ shop and he helped me spec it, I did the clear­ance on it and then he helped me as­sem­ble it,” Sohn says. “Ac­tu­ally, for my sec­ond date with my wife, I took her to my en­gine builder.”

The 13B uti­lizes ro­tor hous­ings from a late-model Ja­panese FD and the in­take man­i­fold from a tworo­tor Eunos Cosmo. The Cosmo’s two-ro­tor in­take is ac­tu­ally fairly com­mon among RX-7 en­thu­si­asts chas­ing higher horse­power num­bers be­cause the in­take run­ners are about 25-per­cent larger on the se­condary. Sohn’s iron’s in­take ports are matched to the Cosmo’s two-ro­tor, and there was even an adapter cus­tom de­signed to fit the pieces to­gether with­out mod­i­fy­ing the throt­tle body or re­lo­cat­ing the oil filler neck.

To take ad­van­tage of all the new air op­por­tu­ni­ties avail­able, the FD is run­ning a sin­gle Gar­rett EFR 8374 tur­bocharger in con­junc­tion with a Tur­blown cast stain­less steel man­i­fold kit. The re­sult­ing power is put to the ground through use of an Exedy twin-disk clutch.

As Sohn likes to get his cars on the track as of­ten as pos­si­ble, that mag­i­cal Dorito power is al­most put to waste if it doesn’t hit the track right. The RX-7

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