V-max 540 Hp Question

[northern srx]

Would anyone know the stock HP rating for the V-MAX 540 engine? Just want to compare against the Exciter 570 HP rating. THANKS!

 

[YAMMIEGOD3:16]

85. !! 3:16 (yammie tony)

 

[northern srx]

Thank you! All the years the same?

 

[Exciter570]

What does the Exciter have? I think that the Exciter 570 and the Exciter II 570 and Exciter II 570 SX were all different hp ratings.

 

[northern srx]

From this site, which is incredible!, member ramblnman gave me these figures on the exciter--- 87-90 77HP @ 7250 rpm, 91-93 77HP @ 7500 rpm, and 93 exciter sx 93HP @ 7750 rpm. I was just curious how close the two motors were for HP in stock form (brother-in-law picked up a 89 exciter to rebuild)

 

[Exciter570]

wow, pretty big jump in hp between the SX and the regular exciters. I'm suprised that the VM540 has more hp than the exciters did.

 

[Vmax540]

The Vmax was built for the higher performance/Lake racer crowd with it's twin pipe/carb setup. Yamaha marketed the Exciter as a lower Hp., higher torque, turn to turn Trail sled. Within a couple of years the Magazines had quit praising the Exciter and complained bitterly about Yamaha not haveing a top end lake racer and hence the Vmax4 was developed !

 

[tedgoesfast]

then the mighty srx

 

[YAMMIEGOD3:16]

AND THE VMAX 540 HAD PORTING UPDATE RIGHT FROM YAMAHA THAT ADDED ANOTHER 8 HORSE. REALLY WOKE THEM UP. THE EXCITER TO HAVE IS THE 93 SX. 3:16 (yammie tony)

 

[YAMMIEGOD3:16]

then the mighty srx

STOCK FOR STOCK THE 81 SRX HAD MORE HP THAN ALL THE VMAX 540,s. 3:16 (yammie tony)

 

[montynormand]

I was given PDF copies of the dynotech articles for
1) '86 vmax540 updated porting
2) '86 vmax540 Bender FIII porting
3) '87 vmax540 pipeshoot out
shoot me a PM with your email address and I can pass them along
Monty