exhaust choices

[Crazcnuk]

Hi there, XS, since this is a 4 into 1 set, I am not sure what they are doing with the x overs. Generally, the xover is used to balance a dual exhaust system, where there are 2 sets of tailpipes/mufflers.

Basically, you would have to find a tech paper on the design to see what they were trying to do with those.

Otherwise, if the headpipe diameter and outlet diameter are similar, or smaller/bigger depending on your needs, it should work.

You have to remember that most GOOD 4 into 1 exhausts were designed for racing. Racing likes all the torque and HP peaks as close to the shift point as possible. If you watch Big bike racing or formula 1, they use a very small amount of the rpm range. They shift very close together.

To give you an idea, my monte has Hooker Comp series headers w/ 2 1/8" primaries and a 3.5" collector. From there it has a dual 3" exhaust with, dual chamber, Walker Dynomax mufflers and 3" tailpipes.

One would think this was plenty of pipe for the engine. However, first time I raced at the track, I walked on it off the line and spun the tires for about 20-30', into 2nd gear, before it grabbed traction.

Next run, I took off the caps (I have Y-pipes on the back of the headers, one way through the mufflers, the other straight out behind the front seats) on the same tires and spun them for 660' (mid track marker) before I let off and replanted to make it straighten up.

The first run was in the low 14's, the second in the high 17's.

First and last time on the drag strip with my street tires. With my M/T ET drag slicks I do between 12.2s and 12.4s on any given day.

Incidentally, that day I happened to do the long burnout right after Darrel Webb The Burnout King, did a 483' burnout, in his alcohol funny car, to raise money for charity...

[Jerry]

I have a set of the Jardien 'spagetti' (4 into 2) pipes on my XJ and run Jardine mufflers that came with the system. They are about the same over-all sound level as the stock pipes (possible a little louder) until you roll open the throttle, then they have a different sound, louder than stock. System also comes with a crossover. I went with these as I prefer the look of the 4 into 2, I was able to get them at a very reasonable price ($50.00 plus shipping, one muffler dinged by a lay-down) and my old pipes were getting bad. Crossover on OEM system was rusting out, had it brazed but was worried about how long the repair would last.

Seat-of-the-pants feeling was that the Jardine system added more torque to low and mid-range performance, never did enough high-end on the old pipes to develope a valid comparison or feel between the two. No interference with center stand or oil filter, a cause for concern with some 4 into 1 systems.

Would like to modify the OEM mufflers to fit the Jardine collectors, which are a larger diamter than OEM, will have to look at that project again as I like the looks of the XJ OEM mufflers better than the Jardine silencers. Over all I am very satisfied with the looks and performance of the Jardine system.

[Dennyz]

I like my Jardine 4:1 into a R1 can. Quiet and strong. BUT, not a bolt on mod.

[BlkMage]

Am I the only one here running on MAC 4-2s? Easy to install, since they don't 'spagetti' like some of the other ones I've seen in this thread, but my father had to make custom brackets from spare aircraft aluminum to mount on the back, near the rear pegs. Personally, I think they sound great, but I have no clue about performance issues.

[John]

There are lots of guys running Mac 4-2, but may be too embarassed to admit it. I have a set on my 81, and I don't like anything about them. I have a set of Spaghettis, or a set of OEMs to install, just haven't decided which pipes to use.

[pggg]

Cycleworks 4-1 with K&N type airfilter I have plenty of holes in the airbox, instant power boost even without re-jetting your carbs, and re-jetted a 78E goes off even more, that's if my stock 78E was anything to go by, and no loss of low grunt either just oodles of grunt.

The top end from, say, 6500 to 9000 howls like an inline 4 should, good carbs hammer out even more grunt, unbelievably arm-wrench power at 1500 revs in 5th (1196cc helps there too) I never got that with stock carbs though, but still just the cycleworks 4-1 on it's own was enough to slip the hell outta my previously solid clutch

[thewiz]

Hey, desert1

I have a stainless SuperTrapp on my G with VM33 smooth bore carbs and a K&N element in the stock airbox. Although in need of valve adjust and carb sync, it is still very strong and great sounding.

On my SF, I'm running MAC 4/2 .... sounds good ... ran fairly well with stock jets but craps out at about 7500 ....just pulled the carbs to bump to 140 mains. I'm debating whether to install a set of stock exhausts or the stainless Kerker both of which I've been sittin' on for a while.

My F has factory pipes and muffs .... although only slight surface rust there is cosmetic damage (presumably from battery acid) to the chrome on the left muff and pipes are pitted due to poor care ... best runnin' bike I have though. Love to find a nice left muff for it ....

[Meatloaf]

I 've got too many project rides so I'm bailing...for now. Will buy another XS when I have more time.

In the meantime I've got an OEM exhaust for sale on eBay.

[egsols]

I've got a set of Jardine 4 into 1's that PO put on and had ceramic coated. Don't sound too bad but don't make good seal where the 4 headers connect into the pipe. They fit good on the bike, though, and are easy to pull for wrenching. One nut and I can run straight pipes and breath in all those good fumes.

I wouldn't mind gettin a hold of some aftermarket 4 into 2's that look and sound like stock. Macs?

Ernie

[egsols]

Sorry,

I am new to attaching photos,

[STEPPENWOLF]

I run stock exhaust,I think they look good with my Bagman soft saddle bags and Yamaha luggage rack and Windjammer...like the lines....Just looks perfect.....Plus being quiet you can still kick butt and surprise a few people:-) Ya don't have to be loud to be proud type of thinking.
Meatloaf,Bob Jones in his book,XS Eleven Heaven said he sold a stock exhaust system for $1000 dollars,can you say,in it for the money.

[Meatloaf]

I have the book, just about spit out my coffee when I saw that.

[STEPPENWOLF]

Originally posted by Meatloaf
I have the book, just about spit out my coffee when I saw that.

Yuppers...I was having a fun read up to that point..my opinion of the man and his opinion of other 1100 riders( I can make a buck) completely changed...dang shame I bought the book.

[Crazcnuk]

I run a set of 4 into 2 S&S slashcut exhaust.

So far they sound nice. The are about the same length as the stock std system, but they come straight out, at the back, instead of angling upwards.

I have no idea what the stock or any other pipes performance is like, though, so don't know if these are good or not.

[tommystinson]

Not that I'd be willing to pay it, but I don't think $1k is too far out of line for a stock exhaust. That may actually be less than MSRP for the part. I don't fault Bob for the price. If it wasn't fair, why did someone pay it? And it is "all about the money" for him. He owns a shop that revolves around the XS. Why begrudge the man for making a profit?