vmax-540
Member
I am looking for the jetting specs for 44 mm powerjet carbs that Aaen & Reichards sold back in the day for the 540 Vmax. I am setting some up and would like to know if anyone has a set that can tell me what all the jets are in the carbs. If I know where to start hopefully I won't burn it down.. Thanks in advance....
opsled
Active member
I've got an 87 engine with 44 PJ carbs. These are center dump PJ's. Not sure if that is what Aaen/Reichards sold.
I bought this sled complete many years ago and these carbs were on it. The chassis was real rough but it's still here. The engine is in a 78 SRX and hauls a$$.
If you think these might be what you're looking for I can open them up and get you the info. Won't have time to do it until Sunday though.
opsled
I bought this sled complete many years ago and these carbs were on it. The chassis was real rough but it's still here. The engine is in a 78 SRX and hauls a$$.
If you think these might be what you're looking for I can open them up and get you the info. Won't have time to do it until Sunday though.
opsled
Yamaha Nutz
New member
Opsled may be able to give you a starting point .....Phil what is the the jetting on old "Uncle Don" i would think that would be a safe set up .....
i aside from that i can give you my non power jet setting i run on my big bore 79 srx which is 514cc with 45.5 mm rounds which i would think would be safe
40 pilot
air screw 1 turn
BB-0 tube
2.5 CA
7DH2 needle 3rd clip
440 main
No Air Jet
i aside from that i can give you my non power jet setting i run on my big bore 79 srx which is 514cc with 45.5 mm rounds which i would think would be safe
40 pilot
air screw 1 turn
BB-0 tube
2.5 CA
7DH2 needle 3rd clip
440 main
No Air Jet
vmax-540
Member
Phil That would be great, Yes they do have center dump. Thank You..
YAMMIEGOD3:16
Active member
while you guys are here, i need a comet 102 c for a 79 srx. don,t need weights and spring. just a good tight uncalibrated primary. anybody ? 3:16x (yammie tony)
vmax-540
Member
Sorry Tony no got, If I had one you would be welcome to it..
opsled
Active member
No Comet here either Tony.
I'll drag ole Uncle Don in on Sunday, dig into those carbs and post what I find.
opsled.
I'll drag ole Uncle Don in on Sunday, dig into those carbs and post what I find.
opsled.
toydoc
Member
Mine is also bolted on a sled, but Ill look Tony
YAMMIEGOD3:16
Active member
chris thank you. i think were all set.. 3;16x yammie tony
opsled
Active member
OK, Got a chance to pull these 44's this AM and take them apart.
The numbers on the tubes and needles have been ground off (guess they didn't want the competition to know?). I can barely make out the Mik logo on one needle and the 224 #'s are still on the tubes but that's it. Talked with Mike (Yamaha Nutz) and he thinks the BB-0 tube and 7DH2 needle as used in his setup would be a good start. I agree.
Here's the rest
Slides-- 2.5
Needles-- no # 4th clip down
Tubes-- 224 ???
Mains-- 300 left, 290 right
Pilots-- 35
Power jets-- 170
Air screws 3/4 out left, 7/8 out right
This engine is in a 78 SRX with no filters and seems fine. My buddy Donny Avery tossed it together a bunch of years ago with parts out of my barn, his piles and cheap swap meet stuff. It's a rat for sure but runs real strong. Shortly after he put it together he chased down, caught and passed a newer Doo and F-7 Cat on a 1+ mile run down the river. It was cold and racing them back up he did score one cylinder a bit but that turned out to be a bad PJ hose. Fixed that and the cylinder and it's been fine ever since so it's not a ragged edge lean setup.
Good Luck, opsled
The numbers on the tubes and needles have been ground off (guess they didn't want the competition to know?). I can barely make out the Mik logo on one needle and the 224 #'s are still on the tubes but that's it. Talked with Mike (Yamaha Nutz) and he thinks the BB-0 tube and 7DH2 needle as used in his setup would be a good start. I agree.
Here's the rest
Slides-- 2.5
Needles-- no # 4th clip down
Tubes-- 224 ???
Mains-- 300 left, 290 right
Pilots-- 35
Power jets-- 170
Air screws 3/4 out left, 7/8 out right
This engine is in a 78 SRX with no filters and seems fine. My buddy Donny Avery tossed it together a bunch of years ago with parts out of my barn, his piles and cheap swap meet stuff. It's a rat for sure but runs real strong. Shortly after he put it together he chased down, caught and passed a newer Doo and F-7 Cat on a 1+ mile run down the river. It was cold and racing them back up he did score one cylinder a bit but that turned out to be a bad PJ hose. Fixed that and the cylinder and it's been fine ever since so it's not a ragged edge lean setup.
Good Luck, opsled
vmax-540
Member
Great Thanks Phil.. I will set them up that way and give them a try.. Again Thank You I really appreciate it!!