Super Jet Speedwerx Pipe Question

[Pro-pulsion]

I have been researching this pipe for a couple of weeks now with some good results but since I have not found quite what I am looking for, I figured I might as well just ask...

Are strainers the number one must use item with these pipes?
Are the stock 38mm SBN carburetors on my SJ going to be fine with this pipe?
Will a Racelogic freestyle ported engine be an issue?

I did the porting, but did not max out the ports to the limit of the templates, it is very close however just not quite to the limit and I ride in Lake Ontario most of the time and other freshwater back lakes. I do have an old style ADA girdled head and R&D conical f/a's. No ignition mods or timing advances, all stock. I have read a mix of reports saying all will be fine down to needing 101LL Av fuel and MSD enhancers. Compression is about 185 on 35cc domes. Thanks for any input guys and gals, I really can't wait to get this puppy all set up and running so let the feedback begin.

 

[Matt_E]

It's been a few years, but I am pretty sure I ran mine with a SportPort and stock 38's. Worked great. If I remember correctly, I was using an ADA head with 35cc domes on pump gas, with Enhancer. I didn't use strainers and had no problems.

 

[Pro-pulsion]

Great, thanks Matt. I have read how virtually everyone that owned these pipes absolutely loved them. So I was happy with my decision to buy it. It was missing the head side bracket for the lord mount but I was able to manage still. It is all mounted up now without a strainer since the room was so limited to do so. Tonight will be the first test so I will let you know what happens.

 

[SuperJETT]

I had major clogging issues with mine and had to run a strainer. Mine was the 2nd freestyle chamber made in the first production run of them, just a slightly longer section after the flange so I always wondered if the water jacket was tighter than the original chamber and that contributed to my issues.

At Freestylefest one year, I clogged twice and the second time it took close to an hour of reworking cooling lines to backflush it while riding to get it unclogged so I could make the ride back to the ramp without burning things up. I was very glad I ran split dual cooling then, one circuit for exhaust and one for engine or I never would have been able to backflush it at the beach.

 

[just joe]

I'm anxiously awaiting your feedback as well. I have a Speedwerx I plan to run with my new motor. I had great success in getting a type IV dialed in and generally prefer large volume pipes.

Do you know what version you have? The difference was slight chamber volume and shape, but I don't have the measurements to be able to tell.

I plan to run water filters into the chamber using the FP water filters and jetworks quick disconnect. The round serviceable filters won't fit well in my set-up either. I'm also using a JW FCV into the stinger.

Are you running any restrictors?

 

[MTRHEAD]

Bottom line best all-around SJ pipe. Your setup is mild...if you didn't raise your exhaust port do not use 35cc domes. Lots of guys did on limiteds and if you ran straight pump gas you eventually learned it was too much. I know tons of guys will step and say they did it...I bet they didn't have an all out setup nor could they load the motor the way it can be loaded in full race setup. Run 37cc domes - it will hit 98% the same and rev a touch better. Timing curves up top have alot to do with it. When you reference 35cc domes, Im assuming Speedwerx/Umi/Greater/Protec/etc style domes. ADA's are different so I cannot comment. ADA's are generally much much more conservative of a design....they take into account the knowledge of the customer base with respect to detonation.

If you did port your motor (raise the exhaust timing) all bets are off on the size of the domes. Example: Good superstock's ran 23cc domes

As for the strainer - keep an eye out periodically

 

[Pro-pulsion]

I'm not sure what version I have Joe, my manifold is a Riva and I am not sure about dimensions of the different styles. I assume mine is not the freestyle version though because there is a few inches between the chamber where it wraps around to go over the head. No restrictors for me, I changed the water inlet configuration on the inlet at the pipe going into the waterbox and found they use a little stem with a fine slot in it. If I remember correctly, restrictors only work at certain temps so if you never hit that temp then no water would ever get to the exhaust hose ending in a short ride.

 

[MTRHEAD]

There are two different lenght exhaust manifolds for the SJ drypipes in question. The standard factory pipe manifold and then the "shortened" version which was the Speedwerx and Riva.

The speedwerx/Riva version was basically an FPP with the pipe coupler cut off and then rewelded shorter. A google search and its easy to compare each.

 

[just joe]

So the Speedwerx freestyle pipe had a longer section after the flange according to Jett and I knew there were 2 different manifolds - standard length Riva/FP and shortened Speedwerx. Did the short manifold go with longer freestyle chamber?

 

[MTRHEAD]

I dont know about the freestyle setup. Only the race

 

[SuperJETT]

I'll say this---they didn't make very many freestyle chambers though it seems a good portion of people that have them claim they are. Brad Lustic and I got the first 2 off initial production run, him to compete with and me to show running at The Jam in Nashville back in 2002 or 2003 whenever it was.

My main riding buddy had a race version and we had both skis on my double trailer a lot. I took pics to compare them and even with the skis side-side it was hard to tell since it's supposedly only a 2" difference in internal chamber length in the first bed section which means like 1/2" in overall chamber length. A 200-300rpm lower peak was supposed to be the result with more midrange.

 

[just joe]

Thanks Jett, appreciate your feedback.

Do you know if you use the shortened manifold?

 

[Pro-pulsion]

Well I just made it back from a ride...I definitely have the race version, man can that ski rip! But the downside for me is I am not into speed at all. In fact if I could give up 95% of my top end for that explosive bottom end I would. So now I can say I have a nicely polished Speedwerx race version pipe up for sale with a new coupler having only 20 minutes of ride time on it for any of our aspiring new racers in need of a very impressive top end pipe.

 

[powerhouseperformance]

Don't give up on that pipe yet. Prop it where u need it to instantly rev...Maybe bore the nozzle a bit to help. The freestyle version of that pipe is my favorite pipe for a yami. Had one on a bob gen 2 with a 771 race gas motor with tl and 48novis and it was an absolute monster...

 

[Matt_E]

Well I just made it back from a ride...I definitely have the race version, man can that ski rip! But the downside for me is I am not into speed at all. In fact if I could give up 95% of my top end for that explosive bottom end I would. So now I can say I have a nicely polished Speedwerx race version pipe up for sale with a new coupler having only 20 minutes of ride time on it for any of our aspiring new racers in need of a very impressive top end pipe.

I wouldn't give up that quickly. Mine was a race version and it had as much bottom end as the b-pipe setup I replaced it with.

 

[Pro-pulsion]

I am running a Hooker 9/15 php, I spent enough on the pipe that putting together an inventory of impellers to figure out which one is best is just not financially possible. I would much rather go back to what I was running and have fun again than keep this race monster only to go fast. What did you have to do to your pipe Matt to get it strong like a b-pipe?

 

[Big Kahuna]

Race Pipe makes as much power down low as a B Pipe........ you need to work on your prop / pump setup................. I ran the Race Pipe that Jett was talking about for a while, sold it to his buddy. Listen to MTRHEAD.
If I were to build a Limited Race SJ. There is only one pipe I would use, Speedwerx.

 

[SuperJETT]

The Speedwerx manifold, whichever one that is.

 

[Pro-pulsion]

But you see I am not building a race machine at all, I just want solid bottom end for freeride. From what I experienced last night there was no bottom at all, but strong upper mid and top...which I have no interest in. As for my pump set-up, I am out of finances because I dumped it all into the pipe lol. I would much rather recover that and have fun again with my prior pipe than be disappointed knowing that I have to spend more to get back the stronger bottom end I just lost.

 

[txsuperjetfreak96]

How is your pump setup, bored reduction nozzle, stubby pump cone?


Jeremy