Mind sharing your Dasa 1200 jetting ?

[maxsimoneau]

Just bought a Dasa 1200 first gen motor and I have no clue on where to start for jetting.

I have a set of ET 52mm and a set of Thrust 50mm to try on this motor.

I know every setup is different but I
Just want to see what people are running for carbs and jetting on their dasa 12, to get me a ballpark on where to start..

Thanks

 

[Jhucke]

Could probably call dasa racing direct to get you close on jetting.

 

[maxsimoneau]

Could probably call dasa racing direct to get you close on jetting.

Already sent them an email months ago and no reply..

 

[kevbo]

What others run is VERY likely not so good.

 

[DylanS]

I’ll get you numbers when I get back to the garage. I have a 5 port 1200 probably about the same age as yours. Running 50 full specs. I’m sure you’ll need to tweak your jetting but it would give you a ballpark.

 

[maxsimoneau]

I’ll get you numbers when I get back to the garage. I have a 5 port 1200 probably about the same age as yours. Running 50 full specs. I’m sure you’ll need to tweak your jetting but it would give you a ballpark.

Thank you!

 

[DylanS]

Thank you!

My apologies for the delay I totally forgot.
As follows on my current gen FS 50’s:
Main 132.5
Pilot 122.5
Pop off 24psi
Pro-k filters
Gen 2? Vforce mani and three stage reeds
Rrp carbon chamber and waterbox
MSD Total loss
I run gp800 style kidney blocks and double up on anti siphon plastics. This helps with the raw fuel shaking out at idle issue.
Cheers!

 

[maxsimoneau]

at least I got 1 reply , thanks !

 

[DylanS]

at least I got 1 reply , thanks !

Out of season and I’d assume not a lot of fellas running old school dasa 1200’s on the forum frequently!
Good luck man

 

[Baja 252]

I run gp800 style kidney blocks and double up on anti siphon plastics. This helps with the raw fuel shaking out at idle issue.

I like more info on this, thanks

 

[DylanS]

I like more info on this, thanks

Mikuni SBN fuel dribble

I have a 839cc big pin, ported, dry pipe, vforce Reeds, with dual sbn 46 carbs. I've been having a tough time with tunning the mid-range/transition. I noticed that it was loading up pretty bad so I rebuilt carbs with new needle and seats. On the trailer trying to tune low end I noticed that at...

www.x-h2o.com

Here’s a good thread.
Kidney block part #: 66e-24412-00-00

Tried and true method to fix this issue. Most times you can get away with a single anti siphon when using these style blocks. I run them on all my toys.

 

[fastgtfairlane]

Properly setting your fuel pressure will stop the fuel dribble as well without having to put different kidney blocks and multiple anti siphon valves. Pressure should be 1-2psi at idle and 4-5 psi at wot. You will be amazed at what difference doing this would make especially a larger engine like a dasa 1200. Even on my 735 with dual 44s, setting the fuel pressure to 1-2 psi at idle made a big difference. The stock restrictor diameter in the mikunis is the equivalent to a #60 main jet. With a 70 jet in the return tee on my engine I was at 3.5 psi at idle. Went to a 80 main, I was at 2psi at idle and the engine idled much smoother, also had better low end throttle response.

 

[DylanS]

Properly setting your fuel pressure will stop the fuel dribble as well without having to put different kidney blocks and multiple anti siphon valves. Pressure should be 1-2psi at idle and 4-5 psi at wot. You will be amazed at what difference doing this would make especially a larger engine like a dasa 1200. Even on my 735 with dual 44s, setting the fuel pressure to 1-2 psi at idle made a big difference. The stock restrictor diameter in the mikunis is the equivalent to a #60 main jet. With a 70 jet in the return tee on my engine I was at 3.5 psi at idle. Went to a 80 main, I was at 2psi at idle and the engine idled much smoother, also had better low end throttle response.

Ok last straw you’re officially uninvited from freakfest this year pal!