90 carbs on a 70 yam

[bloodline]

Any suggestions on the jets? Motor has a hydrotec rec head on it. No airbox.

[Fast Fred]

160:cool: take the choke plates out

[Boatnut]

Then wot do for cold starts? Rag over carb? add a primer squirt? a shot from a bottle of petrol in each carb? which is best? got to take choke plates out of mine.Is this a hijack? I hope it's not a hijack, sorry if it is :)

[Fast Fred]

use a flap wheel to open up the intake, make it the same size as the 90hp carb bace gasket.:cool:

witch ever choke you like best,

[Fast Fred]

i like the shot from a squeeze bottle, Dragster style :cool:

welded crank, ya should have one of them;):cool:

[bloodline]

Thanks for the help.

[bloodline]

took the 90 carbs apart a bit ago. Stock jet is 165. Removing the silencer box and you still say 160? With a 150 psi head?

[Fast Fred]

160, yes. if you are guna spin it up past 6000 and hold it, max timin has to go DOWN or she Will detonate right in front of the exhaust port window.:eek:

you will have to make a new throttle cam, think may have a shot or two of said setup.:cool:

[Fast Fred]

:cool::cool::cool::cool:

[Fast Fred]

them is the premix carbs, the other ones work as well. on the pre mix carbs, you have to put counter sunk screws in the top of number 2 and 3.:cool:

[Mark75H]

i like the shot from a squeeze bottle, Dragster style :cool:

I go to the hardware store and look at the cans of lubricant ... if it says FLAMMABLE! Contains Propane as propellent, I buy it and use it as squirt bottle for starting. Lube and fuel, the only other things you need are air and spark

[bloodline]

that thing looks wicked. Thanks for the help. Sounds like I have bitten off more than I want to chew.

[Fast Fred]

compression, you need that too, other wises you just got fire;)

[Fast Fred]

you got to cut a hole in the tray or pan for the carb bowl of number 3 if you run the premix carbs:cool:

every day driver thay are when set up nice thare bloodline.

[Fast Fred]

:cool::cool::cool::cool: