Super Jet How many of you are running a stock cdi with a pipe?

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
Just wondering how many people are running a stocker cdi with the 7000 rev limit and running an A/M pipe like a b pipe and what their thoughts are about it.


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CRJ

Hibernating
Location
Toronto
im not at 7K rpm, yet.. but i have a 6m6 cdi on my 650 with a coffman sizzler pipe. works great, added idk... 6-8hp? but im throwing on an enhancer this winter.
 
Location
England
I do but i ride surf so the extra power isn't really needed. I think an MSD is more benificial for flat water riders. A MAG pump will give me better gains so thats my next purchase.
 
Location
Iowa
Im running stock cdi with b pipe. Will let you know next spring how i feel about it as i am switching to a hx3 over the winter and have no opinion since a stocker is all ive known
 

Dirtybird

Ex*ta*ski
Location
St. Clair, MI
Just had a chance to ride the fx-1 I built for the wife, it has lightened flywheel, and a b- pipe with stock ignition.
Takes off like a rocket but then just bounces off the rev limiter like crazy. So annoying, msd this winter I guess.
 
Location
dfw
Just wondering how many people are running a stocker cdi with the 7000 rev limit and running an A/M pipe like a b pipe and what their thoughts are about it.


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On smooth water you will never get to 7000 with a stock cyl. Raising the rev limit will help most at full speed in chop where a low limit cuts the engine too long.
 

Bobert540

Site Supporter
Location
Rockford,MI
so youve never owned one? I can understand why you may feel that way

No I have never owned one but rode a few boats that did and really didn't notice a difference. Granted there were different motors setups but they were pretty close 701 based motors. You can advance the timing on the stator plate with the stock cdi, the coil is where the spark energy comes from. If you want a more powerful spark than TL is the answer.
 

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
No I have never owned one but rode a few boats that did and really didn't notice a difference. Granted there were different motors setups but they were pretty close 701 based motors. You can advance the timing on the stator plate with the stock cdi, the coil is where the spark energy comes from. If you want a more powerful spark than TL is the answer.
Advancing timing with the stator plate gets a little risky from what I understand, especially if you do WOT runs. The enhancer's curve at max rpm's retards similar to stock.
 

CRJ

Hibernating
Location
Toronto
yep exactly. enhancer advances at low rpm, goes stock up top. and the adjustable rpm is a big plus on top. the TL does punch MUCH harder then a enhancer, i guess its what you pay for it. i can get them for about 60% of most shops, and a $1500 TL is out of my budget lol.
 

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
yep exactly. enhancer advances at low rpm, goes stock up top. and the adjustable rpm is a big plus on top. the TL does punch MUCH harder then a enhancer, i guess its what you pay for it. i can get them for about 60% of most shops, and a $1500 TL is out of my budget lol.
Maybe you should hook some of us up? ;)
I don't like the idea of no rev limiter, because in a split second your ski can rev up to max rpm's if it's out of the water. I really wonder how many rpms a stock crank can handle.. Like, if 8K rpm affects crank life at all.
I was running a protec adustable CDI this season with rev limit set at like 7,750 or so.
never got to use a 61x CDI because mine was junk so before I was running a 6m6 cdi with like a 6500 rev limit..+ a b pipe.
Possibily might go back to a 61x stocker, or get an enhancer. I don't want to sacrifice reliability at all though, can't afford to blow anything up.
 

CRJ

Hibernating
Location
Toronto
Maybe you should hook some of us up? ;)
I don't like the idea of no rev limiter, because in a split second your ski can rev up to max rpm's if it's out of the water. I really wonder how many rpms a stock crank can handle.. Like, if 8K rpm affects crank life at all.
I was running a protec adustable CDI this season with rev limit set at like 7,750 or so.
never got to use a 61x CDI because mine was junk so before I was running a 6m6 cdi with like a 6500 rev limit..+ a b pipe.
Possibily might go back to a 61x stocker, or get an enhancer. I don't want to sacrifice reliability at all though, can't afford to blow anything up.
stocks can take 8K, groupK went over it here: http://www.groupk.com/y633-781sj-all.htm

they dont have no rev limiter, just a adjustable higher one. and id love to help the usa guys out but with duty and shipping its still cheaper for you guys to order from amazon. we get big duty/shipping charges, and i have a setup that only charges us around $20 per item to ship, regardless of size, without duty. its pretty great, but doesnt help you i know lol
 

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
Good read! It sounds like the stock cranks can handle a lot from what I understand then. Makes sense, they're put in a much lightweight machine and stuff.
And yeah, I know msd has an adjustable limiter, but I was talking about a stocker with no rev limiter. I don't like that idea.

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BruceSki

Formerly Motoman25
Location
Long Island
I just rode one day last week with a stock 61x cdi and it is miserable. Bouncing off the rev limiter in the chop horribly. I could feel it at full throttle like someone lassoed my ski from behind and tried to stop me.

This was on a 62T/61x with dual 38's, ada head with 33cc domes, b pipe, and 9/15 hooker in solas pump. I put an MSD in and rode the next day and I can feel the difference for sure. More pep right off the bottom and gets rid of the rev limiter. We had a guy install an MSD on the beach in daytona and rode right before and after and said the same thing.

Now is the response worth the $$$? I say no. But they are just overpriced for what they do like just about every other jet ski part ever made. I won't ride without one. The reliability of a sealed ebox and charging electronics in surf can't be beat. No total loss for me.
 

Bobert540

Site Supporter
Location
Rockford,MI
I never had a problem with the rev limit removed but I wasn't doing wot runs in chop where the pump could come unhooked or hold the throttle open when jumping.

I agree with Bruceski, that I don't think it's worth the $$$ but there are a lot of expensive parts in this sport. I just think if you want more bang for your buck, I would get the top end ported or a b pipe first before spending the money on an msd enhancer. It is nice having sealed electronics in the surf though!
 

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
I ride flatwater only now, but I will ride some Lake Michigan surf next year. There are definitely times when I'll be cruising in chop and my pump will easily come unhooked and rev up instantly, plus sometimes you come unhooked unexpectedly and you rev up accidently, even if you try to be careful . I'm not an idiot that holds WOT when I'm in the air after hitting a wake, but am I wrong saying sometimes you hit something wrong of come unhooked and you rev up high accidently? I've got a b pipe and a 9/15 hooker in a stock 701 61x with stock compression, so I believe I can hit 7000 rpms pretty easily. I want a rev limiter for the added safety for an instance like that, and for the peace of mind, and also because I don't know what's a safe max rpm to run a 701 at. I don't know how strong our cranks are, maybe group k is right? They don't say specifics though. I've got a fresh complete rebuild including a new SBT rebuilt crank in plan on my new engine for next season and I can't afford to blow it up.
How safe is the msd curve anyways? I know you Bruceski are always trying to buy dead enhancers, so are they really that unreliable? Or is it true that they are that hard on a stock stator and that's the problem?
If that's true, wouldn't running dual 1200 bilge pumps + an enhancer be a death wish for your stator?

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BruceSki

Formerly Motoman25
Location
Long Island
I've never actually seen one go bad. Yes they act funny when they get wet. But let it sit on a shelf for a year to dry out and they seem to work fine for me.
 
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