- Location
- Sacramento Delta
ok i would go for a 2.3 n/s 90 gram spring@waxhead HST will put whatever jets in at whatever popoff settings I request.
So, if I buy your Thruster Exhaust for a 62t, and your intake manifold for the 62t and your manifold plate adapters for 46mm dual carbs,
What jets and what popoff settings (etc?) should I request from HST?
Good point. i mean its the easier way if you dont want to machine. the bad thing is you are dropping the transfers down as well as the exhaust and thesea re already weak spots. I would be asking for a slightly thicker gasket than standard myself and machining more.Did anybody check with SUPERJET-113 to see if makes the 0.010 base gaskets?
Do you have an msd enhancer ?? if you do then sure. The zeel is a bolt in and it comes with the wax v3 in it@waxhead And because a Zeel would be too much for me to learn at this time, can I run the set up specified in post #39 with just a MSD Enhancer for now?
I've just been setting up my 46s for my smaller motor and this is basically where I am at for jetting.ok i would go for a 2.3 n/s 90 gram spring
140 low and a 120 high
this would be my starting setup
I was curious about running a milled top cylinder with and ada head and a single layer metal gasket in between to see how the water routing might work, always seemed weird the oems had little holes but these AM heads have tons of flow (wondered how equal the cooling really is or if there are hot spots)You should be able to get the squish tight enough with the metal 760 gasket. I like to custom cut 64u heads. According to the books, the squish is a little wide with OEM fiber gaskets but I’ve never burned a piston. ADA heads are ever popular, I would use one if they used a 760 metal gasket. Not sure how necessary the girdle feature is, I’ve never broken a cyl or ever known anyone who has.
Youa re talkinag about water control and yes I thought about this a lot years ago. I used to worry about it a lot but it never seemed to be an issue and when i came out with out head a few months ago i didnt do it. I mean i could have changed it slightly to make more flow across the cylinder but its never really effected them from what i can see. you had a 140 top in it ?? damn that is richI've just been setting up my 46s for my smaller motor and this is basically where I am at for jetting.
Thought the 140 was too fat but tried dropping it down again without success.
Had a 117.5 main and was a little lean and missing top end, just threw a 135 is and it's definitely richer that needs to be, 125 then maybe 120 to see how it reacts.
(46s, 760, 155mm, 6/10 prop, msd)
I was curious about running a milled top cylinder with and ada head and a single layer metal gasket in between to see how the water routing might work, always seemed weird the oems had little holes but these AM heads have tons of flow (wondered how equal the cooling really is or if there are hot spots)
ON a lites boat a 760 cylinder with the smallest base gasket you can find. I have a laser cutter so i made my own and a stock 760 head gasket the squish was to big, That being said they have a squish relief in the head so removing that would tighten it up some what, I use aftermarket girdle heads to lock it together, i have seen plenty of skis with broken cylinders. its main surf riding over here that could be whyYou should be able to get the squish tight enough with the metal 760 gasket. I like to custom cut 64u heads. According to the books, the squish is a little wide with OEM fiber gaskets but I’ve never burned a piston. ADA heads are ever popular, I would use one if they used a 760 metal gasket. Not sure how necessary the girdle feature is, I’ve never broken a cyl or ever known anyone who has.
Wait , you posted something unrelated , no freaking way !On an unrelated note . . .
Eureka!!!
View attachment 458072
don't understand your reasoning
Along with my @SUPERJET-113 gaskets too!
If Art modded your carbs, they are now better than stock. Regular off the shelf universal 44's are really good. OEM carb are just that. They are designed to meet OEM Specs, and EPA standards. The low speed circuit is different than performance carbs.Hey Watcon, I've been running stock 44's, Art at Jetworks changed the angle of the throttle plates and that's it, they run on a 61X/62T big bore setup 771, what aftermarket carbs would you recommend? Motor has ported cyl and ported case, Bpipe, MSD enhanser and Solas BH 12/18. prop. thnx!
I've just been setting up my 46s for my smaller motor and this is basically where I am at for jetting.
Thought the 140 pilot was too fat but tried dropping it down again without success.
Had a 117.5 main and was a little lean and missing top end, just threw a 135 is and it's definitely richer that needs to be, 125 then maybe 120 to see how it reacts.
(46s, 760, 155mm, 6/10 prop, msd)
I was curious about running a milled top cylinder with and ada head and a single layer metal gasket in between to see how the water routing might work, always seemed weird the oems had little holes but these AM heads have tons of flow (wondered how equal the cooling really is or if there are hot spots)
Something else is wrong, there is no way that it would be rich at the point up top. I would say maybe you have to much water in there. a drippling needle and seat. maybe to much of a smaller restiction in the return. whats is the igniton curve you have in it ?? As a indication I have a ported 760 with the same specs as a downloadable port timing spec on the site. it has 46mm carbs and they are running 140 lows and 120 highs 20 psi pop off. it revs hard to 7200-7300 depending on the day and i hits hard.I am running 771, TL, dual 46s, 148 pump, tnt chamber, 21psi, 135pilot, 105 main and she still feels rich on the top end.
When people ask me why I rate the 46 mm Mikuni SBN so highly, it comes down to the balance between signal, throttle response, and airflow. Group K did a really detailed article on racing carburetors, and their numbers back this up.If Art modded your carbs, they are now better than stock. Regular off the shelf universal 44's are really good. OEM carb are just that. They are designed to meet OEM Specs, and EPA standards. The low speed circuit is different than performance carbs.
In stock at JetManiac.Did anybody check with SUPERJET-113 to see if makes the 0.010 base gaskets?