Bigger Carb's

[seansbaja1982]

Can there be any HP gains going to bigger carb's. Have WH22's now on a 2.4L 200 1983 5 pedal horizontal. Reed cages are also ported.

[Merc 2.5]

Mite c a small difference in holes hot or topend but not much at all , the 22s hard to beat , 15s or 20s wont idle or take off as gud but mite gain sumthin over 7000k

[rjdubiel]

what is the best carb for a 2.4 200? I have been told the WH20's are the best, BP carbs I think.

[mach351]

You’re not going to notice much difference on a regular 200, but the 20’s, 15’s, 22’s, and 46’s seem to run best

[bullet123]

:iagree: 46's

[Merc 2.5]

I agree on 46s to. I swapped from 22s to 46s not long ago , and as the idle wasnt as "clean "as 22s but there was a slight improvement everywhere else

[seansbaja1982]

Do the 46's have separate jets like the 22's?

[tunnelmike]

If you haven't done any block work I doubt changing the carbs will make any difference. Spend that money and cut your heads or find a set of small chamber 2.0 heads. 150lbs of compression will wake that motor up. Can still use the 22s

[Merc 2.5]

The 22s r great carbs , not knocking. Have run coupe sets , I like em , but like tunnel said , spend money on other mods , and maybe trade ur 22s later

[rjdubiel]

The 2.4 200 I have on the Viper came with 46's I think. I have another 2.4 200 and I think that is also 46's.

[eli]

The carbs all mention have 1.315 Venturi so be no gain ,do mods elsewhere like tunnel mike said

[seansbaja1982]

I had a partial machine to exhaust chest, 45 on transfer slots, rod slots cut, heads machined 140 compression, 5 pedal Reed cages opened up, Ccms reeds, just looking for a few more HP,s...

[tunnelmike]

The only real difference in any of the carbs you mention is how they deliver the fuel. Like Eli said the air flow rate will be the same. Bump up to 150 lbs compression and run 91 octane minimum , confirm your jetting is spot on , and ask Forbes what to set the timing at. Without serious compression or port timing changes a carb swap most likely won't be noticeable. Imo

[eli]

Wmh 47 off 3.0 liter has a 1.465 venturi but the fuel inlets I. d . as far as flow is not good 5/16 inch,I had 2 sets and they worked well on my 245's I was worried about wide open for miles and not getting enough fuel I would think you have to change inlets to 3/8 to be safe I am running wmh carbs off my 245's on my new built 260 port FF blocks and I installed 34-310 throttle blades and they idle like efi in the channels and accelerate real nice and not to bad of smiles per miles

[Baker343]

Sounds like you have time and $ invested in your 2foo.
What hull are you trying to push.
Weight vs hp.
If you feel your max out in your current setup and you think your porting can handle it, throw some big bores on it and let it eat.
More air and fuel is usually good for big end.

[seansbaja1982]

1982 Baja 184 SS. Hull is 1000# unrigged. 7.5 setback, CLE lower with 1.87 gears.

[eli]

What prop , height of propshaft ,Baja , while needing more hp are generally not a speed demon 70 ish at best

[Merc 2.5]

1982 Baja 184 SS. Hull is 1000# unrigged. 7.5 setback, CLE lower with 1.87 gears.

My buddy baja was late 70s with no interior to speak of ,except couple small seats , it was prob 700ishthats prob y performed so gud wit 115 v4

[seansbaja1982]

Baja 184 Sun Sport 1050 hull plus engine.448873448873448873

[All9up]

As others have stated, I would suggest you ditch the hull for a better performance design… I had that exact same motor on my 1990 STV Pro comp ski and it ran upper 90s… Was almost completely stock except for 150 psi compression, 32 cc heads...
I think you would be amazed how much better that motor would run on an Allison, Hydrostream, STV or similar lightweight design…
I’ve been in your shoes with an old speed liner tunnel that looked cool but would not perform… Kerry

[seansbaja1982]

How many HP,s are milled heads good for? 20??

[bullet123]

Didn't you already have your heads shaved?

[seansbaja1982]

Yes, was wondering how many HP that was good for?

[bullet123]

I doubt 20. Probably closer to 15

[David Borg]

Wh 20 and wh 15 have a bigger bore than the rest and are best for top end they consume a lot of fuel as well.Wh 22 have better idle holeshot accelleration and better on fuel too. Wh 46 are like a better version of the 22s

[seansbaja1982]

Ok good to know. I have to be around 225HP then with the other mods I did?

[seansbaja1982]

I may ditch the 2.4L 200, I have a eye on a 1998 PM 225 drop on power head... Wonder how that would be on it?

[David Borg]

PM is Better on fuel and has more torque

[seansbaja1982]

At least I would have fuel injection, newer engine and possibly 3-5 mph more? Its stock with a brucato acu.

[tunnelmike]

Great choice. I would think over 5mph increase with the right prop.