VintageVmax.com

this one is older

1987 vmax 540, BRAND NEW TOP END!!! bored .20 over, jugs have been ported and milled by Irondog, brand new wiseco pistons 38 pj\'s, jetted, 2 stage 2 uni filters with no air box. sled runs awesome just needs a little cosmetic work. i got $1100 into this sled and just want my money back obo or will t...

not sure if they're the same or not, but my 350x honda had a high comp. wiseco piston in it, when i rebuilt it me uncle gave me a new set of oem rings and the were to thick.

but it was a 4 stroke three wheeler so it may be different with a sled

max 1080

i think the srv's take the same belt ( Yamaha brand belt )

i just put in 330 main jets and a 135 power jet in the right side and a 140 in the left and it runs awesome

you might have to keep the stock bore, my parts guy called wiseco and they told him all oversize vmax pistons are discontinued, he said wiseco was the last to make oversize pistons

problem solved,

turns out its a tach problem, my motor doesn't sound like its idling at 3000rpm's mu i guess it is?

thanks for the help and sorry if you mentioned the tach and i said it was fine

Undertaker#13 wrote:I run the blue spring and engage at 4400 rpm, and it pulls great out of the hole shot!

what kind of clutch do you have?

whats the factory belt? mine has a Yamaha brand 8m6-17641

i cant figure the clutching out on my vmax Angry it has a 108 comet clutch instead of a 102, it was all set up to 102 factory specs with A3 weights and a silver spring, with that set up it engaged at 1100rpm's i just put in a new yellow comet spring in it thats stiffer than the factory silver figuri...

anybody????

so im getting some mildly aggressive porting done to my 87 vmax, im also gonna jet it, do a few clutch mods and run pod filters on the carbs.

if i run a piece if straight pipe off each of the stock 87 pipes how will it run? has anyone else done this?

is there anything i can do to the stock can?