Delkevic Slip on Review

ribbert · January 19, 2015, 01:41:53 AM

Quote from: FJools on January 18, 2015, 11:41:22 PM

Well, the adjustable dog bones turned up unexpectedly just now........

As soon as I unpacked them I knew I was going to have problems.

Disappointed ......

Bummer.

They say most of the fun is in the anticipation, I guess you just get to have a few more days fun!

Noel

FJools · January 19, 2015, 03:46:45 AM

Yeah,

I need the rest !!

FJools · January 28, 2015, 01:12:40 AM

Newsflash............

just come to fit the Staintunes to the Delkevic headers...............and they don't !

Despite their assurances, so I'm trying to cut a deal with them for some silencers. Which ones are best for the 92 model that won't require any carb changes ??

FJmonkey · January 28, 2015, 09:46:16 AM

Quote from: FJools on January 28, 2015, 01:12:40 AM
Newsflash............

just come to fit the Staintunes to the Delkevic headers...............and they don't !

Despite their assurances, so I'm trying to cut a deal with them for some silencers. Which ones are best for the 92 model that won't require any carb changes ??

If you still have the stock airbox you should not need any jetting changes. What does not fit? Are the tube sizes wrong?

FJools · January 28, 2015, 01:59:36 PM

The diameter of the outside of the Delkevic collector outlet pipe is the same as the outside of the silencer.
The Delkevic also has a graphite collar that fits over the pipe which will not even fit into the Staintune pipe as it is about 5mm larger in diameter overall.
It was getting dark and I just threw the spanners on the bench !

FJools · January 28, 2015, 02:14:38 PM

I'm an idiot !!

I just had another look at this and it all measures up as if it will fit if I remove the graphite seal..............

Its surprising what a good nights sleep will do

FJools · January 28, 2015, 08:15:54 PM

Maybe not..................

Although I managed to get the silencers onto the collector outlets, the silencer brackets would no longer line up with the frame mounts.

I slackened the entire header and collector box mounts but this made no difference.

I removed everything and began by assembling from the back this time. Loosely fitting the silencers to the collector box and fitting the silencers to the frame mounts (loose). This would not allow the bottom bolt to fit as the collector box outlets hit the frame cross rail. With some persuasion I managed to eventually get this bolt in but then the headers would not line up at the cylinder head, even with everything loose.
I had to resort to a jack under the collector box to try to get the front end raised enough for the headers to enter. With everything tightened up the collector box outlet fouls the drive chain and the whole system vibrates like it is rubbing everywhere when the engine is revved.

I'm not convinced the down pipes are sealing properly at the collector box either. Maybe after I've done a test run it will tighten up better after getting hot.

I'm even considering removing it and fitting the original system as I'm not happy. Maybe some Delkevic Silencers would fit and solve the problems

copper · January 29, 2015, 10:23:52 AM

http://www.rpmracingca.com/proddetail.asp?prod=RPMHeader

Bolts right on. No fussing and no cussing.

aviationfred · January 29, 2015, 11:00:37 AM

Maybe you can contact a fellow member in the Denver, CO. area and pick these mufflers up and ship them to you.

http://denver.craigslist.org/mpo/4867521829.html

Fred

FJools · January 29, 2015, 11:40:22 PM

The guys at Delkevic here have been quite helpful and I've sent them photos.

I will probably end up with a pair of their silencers, but he was sympathetic to my problems and will cut me a deal, so he says.

Lets see what that means. I started polishing the old system up just in case !

ribbert · January 29, 2015, 11:58:21 PM

Quote from: FJools on January 29, 2015, 11:40:22 PM
The guys at Delkevic here have been quite helpful and I've sent them photos.

I will probably end up with a pair of their silencers, but he was sympathetic to my problems and will cut me a deal, so he says.

Lets see what that means. I started polishing the old system up just in case !

I've had Delkevic oval 450(ish)mm SS slip ons for years and love them. They still look better than new, and the note is fantastic. I ran them without the baffles for a couple of years but eventually conceded they were a bit loud under hard throttle and high revs. I have had the baffles back in for a few years now and love it. I've probably done 60 or 70K on them with no sign of internal deterioration or cosmetic wear.
I also like the look of twin pipes. Even with substantial scraping and denting the casing shows no sign springing or loosening up anywhere, and, they're relatively cheap.
They come highly recommended from me.

Noel

FJools · January 30, 2015, 04:33:41 AM

That good to know Noel.

I can't ride it as it is. I took it around the block and the noise just made me turn around and go looking for something else. The way its forced the silencers in towards the chain is compensated for the jug ear appearance of the silencers from the back.

Those cans you have are the ones I'm considering.

Jools

JOMPPA10 · January 30, 2015, 05:05:37 PM

in my bike i use honda blackbird silencers, they seem to work guite fine, but they are quite bulky.

Ed Ramberger · February 07, 2015, 12:24:29 PM

Quote from: 1tinindian on August 31, 2011, 09:01:01 PM
I can't comment on the collector, as I haven't bought one....YET! But the mufflers of theirs are top quality with a very nice sound.
These are the mid length mufflers offered for the XJR1300.

Leon

1991 Yamaha FJ1200 walk around

2 summers ago I bought Delkevic slip n's for my 1989 FJ1200. The pipes they used to connect the mufflers to the FJ collector were not bent at the correct angles and the mufflers were impossible to mount. Also the natal was VERY thin. Delvevic was awesome about refunding my money and I have no complaints about their service. THis makes me wonder if I just got a bad set or if they have changed something.

ribbert · February 07, 2015, 05:55:53 PM

Quote from: Ed Ramberger on February 07, 2015, 12:24:29 PM
2 summers ago I bought Delkevic slip n's for my 1989 FJ1200. The pipes they used to connect the mufflers to the FJ collector were not bent at the correct angles and the mufflers were impossible to mount. Also the natal was VERY thin. Delvevic was awesome about refunding my money and I have no complaints about their service. THis makes me wonder if I just got a bad set or if they have changed something.

I think you'll find there are many members who have Delkevic slip ons that are very happy with them, myself included. This very topic has just been discussed again recently. The mid pipes do require a bit of fiddling though but can be made to work. My solution wast to swap the L&R pipes over.

Yes, the casing is thin, but it's SS, it doesn't need to be thick because it's strong and it won't rust. Unless you plan on hitting something with them, it shouldn't matter. It's not an indicator of poor quality.

Mine have around 60k-70k on them now and still look as good as the day I fitted them and I love the exhaust note. They have hit the road a number of times with no loosening or distortion and I have dropped it on both sides without dents or scratches.

I reckon they're great and particularly good value for the money.

Noel

News:

Delkevic Slip on Review