PSI carb

lee

lee

Well-Known Member
I got the bike started tonight after putting it back together. It actually pretty much fired right up with the new PSI carb on there - I wasn't expecting that.

It definitely needs to be dialled in - it didn't idle particularly well and it stalled a couple times throwing out a cloud of black smoke from the air cleaner - at least I think it was from the air cleaner - any ideas what that means? I know sneezing through the carb indicates lean but this was a bit more than a sneaze. This was a puke, shit, fart and sneaze rolled into one.

Anyway, I did manage to go for a very quick blast and Jesus Christ. I don't know how much is due to the fact I have been riding a RoadKing for the last couple of weeks but it was monstrous - the low end torque was ridiculous. God only knows what it will be like when it is tuned in.

I can honestly say out of all the mods I've done to the bike so far, this seems to have made the single most noticeable difference by far. I suspect it is also partly due to the fact that the Woods .650 cam is designed for low end torque whereas the Triple X G is designed for top end power - the exact opposite. I should think the PSI has brought the cam to life.

I ran out of time tonight so will start trying to dial it in tomorrow night and give some more feedback.
 
P

Pops

Active Member
I'm sure Sul will have some tips for you ...he got his dialed in ON THE MONEY:2thumbs:
 
surferdude

surferdude

dry docked
Hey Lee ... just curious ... do you have a non-OEM clutch? Don't remember that you replaced yours but did put in a new push rod ... which I'm doing real soon when it comes in. Worth the $1000+? don't know what's that in pounds ...
 
lee

lee

Well-Known Member
yeah I put the Bandit in a few weeks ago.

Is it worth $1000? I guess thats a personal thing really. I still do think the S&S carbs are great and pretty much beyond criticism - however, they are fixed venturi carbs. The PSI gives the best of both worlds in that they are great for low end torque and top end power, kind of like having an E and a G at the same time.

The PSI also does not have, nor need, an accelerator pump and the fuel is basically vapourised so that it burns better. My bike starts better with the PSI and I can already notice the difference in how it runs. Is it like night and day? no, of course not but there is a definite improvement.

The other great thing about the PSI is that all tuning is done externally - a bit like the idle mixture on the S&S carbs. Very quick and easy to do whilst out on the road and you feel the difference straight away.

For me it is worth the money but I cannot say whether it is for you - only you can decide on that my friend. What I will say though is that I haven't yet heard anyone who has one say it isn't worth it or they regret buying it.
 
G

Gas Man

Cool isn't cheap
Calendar Participant
My only problem and this is due to seeing the problems that Alhall had with his Weber is tuning. Finding a dyno tuner that knows enough about the carb to tune it well. Is this possible with the PSI? IDK. Or do you have to go there and help walk the tuner/dyno operator thru the PSI carb and assist him???
 
lee

lee

Well-Known Member
Its very simple. Two screws for pilot, one for air and one for fuel although I don't know why there is a screw for each. There is another for low to midrange and another for the power (5/8 to full throttle). Turn the screw in for less (air or fuel) and out for more just like the idle on the S&S carbs. Simple.
 
hoat

hoat

Well-Known Member
Gas Man said:
My only problem and this is due to seeing the problems that Alhall had with his Weber is tuning. Finding a dyno tuner that knows enough about the carb to tune it well. Is this possible with the PSI? IDK. Or do you have to go there and help walk the tuner/dyno operator thru the PSI carb and assist him???
Click to expand...

I saw suls webber and you need a fucking phd to dial those things in.

The PSI is almost idiot proof:flag:
 
Bulldog03

Bulldog03

POIDOG
lee said:
The PSI also does not have, nor need, an accelerator pump and the fuel is basically vapourised so that it burns better.
Click to expand...
So there's no hesitation when you blip the throttle?

How does it keep from that when you throttle it from a dead stop, with no squirt from an accelerator pump:confused:
 
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