Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles
Issue link: https://magazine.cyclenews.com/i/125872
o ut o f th e side . th en tun e it from th e ne edle je t th e way y o u 're s up p ose d to . Bac k to the shop w ith o ur arm loa d o f je ts to see wh at we can c o m e up with. Aft er e igh t h ours o f tryi ng ever y jet com binat ion we coul d thin k of. w e were right hac k where we star te d from . It wo u ld st ill b low it s brains o u t if we go t it jetted close enough to h ave a ny ho rsepower. Anyt hing that was o n the safe side was sloo py rich. The next step was to sit hack and have a beer and think a b o u t this for a m in ut e. Wh at was differen t on this b ike compared to las t year's m odel , ot her t ha n t ha t the carh on t he Ya m ah a RT -3 36 0 was a 32mm Mikuni ? Off came th e cy lind er and I c hec ked t h e p ort timi ng of bo th o ld a nd new cylinders . As close as I co uld tell , they we re both the same, cl ose eno ugh th a t it would n't m a ke a ny d ifference. Ma y be th e he ad was di ff erent so the head w as cc 'd o u t. Very interesting. T he 19 74 End uro he ad had th ree cc less head uoln me the n th e 1973 En d u ro . With a two m m sma lle r ea r b th an th e 197 3 mod el it j us t won't wor k. Yo u ca n 't raise the com p ressio n th a t m uc h and come do wn that much o n th e ca rb s ize. T his is jus t noL the way y o u do things. As fa r as I k n o w , yo u h ave to go th e o th e r wa y , Bab y needs mil k 10 grow and y o u r bike n eeds gas t o go . Ro n then sa ys. looking ove r a t h is bo ss' 3 6 0 Yamaha M X, "Let 's ta ke t h e o r b o ff Harry 's b i ke an d see wh a t happe ns . It's a 3 4 m m Miku n i se t up just the way it comes fro m Yam aha. " Five minutes later we were oU,i for a road tes t. T h e 360 Enduro h ad the fee li ng th a t it ha d co me "live , b e in g j us t a littl e rich on the bo ttom a nd t hro ugh th e midrange but no t e no ugh to ho th er m e. We t o o k a c hance a nd went up on th e freeway with hope ful th ough t th ai we co ul d m ake it back t his time. The bi ke had . a very notice able horsep o wer increase throug hout the wh o le power range. Ron's nex t step was to tunc the hike to r un clean ly aU th e wa y t hrough th e ' RP:\I ra nge . At th is po int , I left Ron to . play wit h it . A ll yo u Yamaha riders o ut th er e up against a w all wi th dreaded det a na tion , ta ke t he eas y wa y o ut an d get yo urself a 19 73 o r 19 74 Yam ah a 360 MX ca r b , 34 mm in size an d yo u r problems sho u ld be o ve r. If yo u nee d h elp or advice o t he r t ha n wha t I've passed o n give Ro n a t Har ry Foster Yamah a a ca ll. Ph o n e : (2 13) 772-83 4 0 . lI e'll be glas t o he lp. As fa r as Mitsu b ishi b ei ng a t Ya ma ha th ey wer e . Bu t I don 't kn o w why . Ma y b e th e y 're go ing to bu y me a ne w to y a nd w e may h ave Yarn a tyrans. Wh o kn ows ? ( The Sh ad o w knows . . . St ay t u ne d fo r Th e Un lik ely )'am at y ran Cap er next ovel most of t his sam e sta tio," . .. Ed .) Ti m Marki n (Hus) wen t fast , cra shed hard a t So uth Bav Speed way in Ch ula Vista: California Augus t I . Even th ough he was treat ed to a ride in t he wagon, his ea rl y mo to finishes nett ed him firs t Overa ll 500 Junio r. (1\1. Service pho to ) ~---- PRESENTS THE MOST EXCITI NG FILM EVER MADE ON MOTORCYCLE SPORT BY8RUCE BROWN,PRODUCER OFTHE ENDLESS SUMMER Now sho w ing fo r ONE WEE K ON LY in 85 t heaters t hrou ghout : Los Ang eles Coun ty Santa Barbara Co unt y San Bernardi no Co unt y San Luis Ob ispo Coun ty Orange Cou nt y Ventura Coun t y Kern Coun t y Riverside Coun tv Start s A ugust 14 th in San D iego Coun ty . Chec k y ou r loca l newspaper fo r a th eater near y ou . Race to y o ur local Yama ha dealer f or FR EE DI SCOU NT AD M ISSION coupons good at any theat er play in g "ON A N Y SU NDAY ," Pick up enough for the who le fam il y. 'BI CIIA II U TIl \ - - ~ 'lj VII /. , , / In this fast-mov ing worl d you 'd like some of the changes to be in your favor. Our members feel the same way. and from all areas of the motorcycle industry they've joi ned fo rces in supporting us. Because we 're strong we are effecti vely promoting an equitab le legi slative att itude towards the industry. and a pos itive public view of moto rcycling. We're the Motorcycle Indus try Council. We're' strong . but to grow stron ger we need you . Send fortheMIC membersh ip package . . -IMel Y Mo torcy cle Ind ustry Counci l, Inc. 1001 Connecticut Avenue . NW. Washington. D. C. 20036 31