760 with 35 cc domes

[crammit442]

You can run 50/50 of race gas and pump super unleaded on 35 cc domes. Just make sure you don't have a stock cdi, you need at least an MSD Enhancer cdi set with std timing mark on the stator plate.

I'm assuming this is for performance and not safety. If this chart is accurate, the stock CDI would be safer on iffy gas.

 

[Mouthfulloflake]

after 6000 rpm enhancer and stock CDI are looking the same according to that chart?

either way... im not interested in doing anything that is un-pumpgassable.

I am simply too lazy to purchase, stock, store, and deal with stuff I cant pump at EZ-mart.

 

[yamanube]

So being that I am at 900'asl and wanting to run pump gas with a wet pipe should I go with 38s or 40s?

 

[Mouthfulloflake]

the head in this thread, looks IDENTICAL to this one that Im trying to find O rings for.

http://x-h2o.com/showthread.php?t=27904&highlight=pro+head

except of course, it doesnt say " cool head " on it, it has NOTHING engraved upon it.

 

[orangefinger]

760

here are my jetting specs

Duall SBN 44mm on 760 ported, ada girdled head 31cc ( high altitude ) 33cc for seal level , b-pipe, pump gas

Main 135
Pilot 122.5
1,5 N/S
80 g spring
+- 38 pop
High Screw +-1
Low screw +-1

 

[#ZERO]

I'm assuming this is for performance and not safety. If this chart is accurate, the stock CDI would be safer on iffy gas.

The MSD enhancer only has a 3-degree retard rate and I've heard that it varies from box to box.

If you're going to be running more compression an Advent ignition would be the better choice.

 

[Mouthfulloflake]

I opened up my oem44 carbs last night

pilot 115
main ( 130 front, 132.5 rear)
1.5 N/S
shiny spring.

I guess Ill be ordering some jets

here are my jetting specs

Duall SBN 44mm on 760 ported, ada girdled head 31cc ( high altitude ) 33cc for seal level , b-pipe, pump gas

Main 135
Pilot 122.5
1,5 N/S
80 g spring
+- 38 pop
High Screw +-1
Low screw +-1

 

[Scraggly]

the head in this thread, looks IDENTICAL to this one that Im trying to find O rings for.

http://x-h2o.com/showthread.php?t=27904&highlight=pro+head

except of course, it doesnt say " cool head " on it, it has NOTHING engraved upon it.

I have that head!! i got a o-ring kit from z-force it works perfectly.

http://cgi.ebay.com/ebaymotors/YAMA...62QQcategoryZ56422QQihZ011QQitemZ320213479043

 

[Mouthfulloflake]

thanks Rags.

I have the combustion dome rings, and the long outter ring, I only need the 2 smallest ones that seal around the spark plug.

 

[Scraggly]

thanks Rags.

I have the combustion dome rings, and the long outter ring, I only need the 2 smallest ones that seal around the spark plug.

i could probably measure those if you need a size? im not sure if it came stated in the kit, but i will look when i get home tonight if you need it?

 

[Mouthfulloflake]

if you will measure the rings you have, I will measure the grooves that I have.

IM not sure about how to factor in stretch and contorion, since they go from round to square when mated together?

mainly, id just like to get the numbers together, and accurate to go into the faq, its been very helpful for me lately ording small bits, I would like to contribue!

 

[Kennay]

To bump this with more info.... My ADA head came in today, and on a brand new never fired engine, I got 180 in each hole with the 35cc domes.

 

[orangefinger]

OMG it has been raining for a week straight but Friday finally will be the day to take the 760 for the first spin....I am so exited...and scared too loool...

This has been my biggest and most expensive engine built so far ! :arms:

 

[Mouthfulloflake]

mine too!

and ive shelved it until winter, since im too lazy to even swap pipes or heads on my junk thats running now.

actually, I just dont have time.

IM waiting to hear how yours runs though, remember, you have to motivate me.
even if it sucks, LIE to me...

 

[Kennay]

I will get someone to do the power report that is used to uber power. Details at 11...

 

[Mouthfulloflake]

11 central or eastern?

or proverbial 11?

spit it out man!

 

[Kennay]

the prov.

Mid-late jun-ish... in a land far away (From my house anyway, seriously) :sneaky: :laugh2:

 

[Mouthfulloflake]

Oh yeah?

you making the invasion?

Or I saw some other thing late in June, Tupelo maybe...

either way, I expect a FULL detailed report.

 

[Kennay]

Oh yeah?

you making the invasion?

Or I saw some other thing late in June, Tupelo maybe...

either way, I expect a FULL detailed report.

Nope. Noi freeride tour stops up there, it's down south. Just to ride with some friends and tune this baby in :smokin:

 

[SUPERJET-113]

To bump this with more info.... My ADA head came in today, and on a brand new never fired engine, I got 180 in each hole with the 35cc domes.

Hey Kennay,

Any cylinder/case porting on your new engine?