what set up jet to novitech 48 in dasa 1200 with MSD T/T ??

[kornel26]

what set up jet to novitech 48 in dasa 1200 with MSD T/T ??
I'm just trying to set up my novitech 48 for freestyle someone can help?? what size jet?

 

[Harbor]

Sorry I don't have those carbs. Same engine and ignition though. Fwiw iam reverse jetted on FS 49's at sea level
155
105
2.5 seat
20 pop off

 

[kornel26]

Sorry I don't have those carbs. Same engine and ignition though. Fwiw iam reverse jetted on FS 49's at sea level
155
105
2.5 seat
20 pop off

105 -How much twisted screw?

 

[Harbor]

1/2 out on the low and about 1 on the high

 

[kornel26]

1/2 out on the low and about 1 on the high

Thanks

 

[CARBONX2]

Novi 48's 135pilot, 125main

 

[Freakie]

Sea level. TPE 1105. Pfp. Novitec 48s. Msd. Mains 130. Pilots 135

 

[623pwr]

Im at 137.5 p, 120m 2.5 ns with my Novi's.

I think i need to drop the pilot to 135. Im right at an 1/4 of a turn out on the pilot.
50/50 sunoco or vp 112.

 

[Robbie8984]

Dasa 1200 with dasa 48 carbs not TL

127.5 L
135 H
2.3 n/s 95g spring 16psi pop off.

 

[kornel26]

Novi 48's 135pilot, 125main

How much twisted screw?

 

[CARBONX2]

LS 1-1/4 HS 1

 

[CARBONX2]

If you are struggling with carburetion not being clean/crisp, check if carbs are dumping fuel through high-speed circuit on return to idle. If so, use valve bodies with in-direct passage to anti-siphon valves

 

[Dom285]

Any info on jetting for a dasas 48 carbs with 1200 dasa and msd t/l?

 

[Vortex]

If you are struggling with carburetion not being clean/crisp, check if carbs are dumping fuel through high-speed circuit on return to idle. If so, use valve bodies with in-direct passage to anti-siphon valves

Where can you get those valve bodies?

 

[CARBONX2]

Not sure, I found 2 in my parts bin, possibly from I-body carbs. I think the number on them was 1-2-1. Novi used to mod valve bodies to be similar.

 

[37]

Where can you get those valve bodies?

I built a jig using Novi's original CAD files and can make more as needed. I just need new metering blocks and a bit of cash to make it happen.

These prevent the fuel in the bowl from affecting the check valve. It's a good mod for hesitation in turns, strokers with heavy vibration or side-draft carbs.

Mikuni also made high-entry jet blocks to solve the same problem. Novi's mod kept fuel entry at the same level to retain the same fuel fill to throttle response ratio.

Edit: Removed photo

 

[Vortex]

So would gen 1 novi 48s with the round booster have that type of anti siphon valve body? Sorry to derail thread

 

[37]

So would gen 1 novi 48s with the round booster have that type of anti siphon valve body? Sorry to derail thread

No, it was an option way back in the day. Round boosters were typically found on runabout side-draft setups but not all had modified metering blocks. It depended on the application and orientation of the carbs. Some down-draft carbs had them. Finding them these days is near impossible, which is why I set myself up to make them. I needed a pair for a stroker motor.