Doe's an aftermarket exup system exist?

Crazy L · Post by **Crazy L** » Wed Jun 25, 2014 2:25 pm

Hi all

Just giving my Ace a good going over and one of my jobs was to get all the crud and surface rust off my exhaust system and give it a good spray to keep any more corrosion at bay. Having just stripped out the exup valve and given that a good decoke and polish, imagine my disheartenment when the wire attachment on my drill just uncoverded a 3mm hole in one of my downpipes.

So I wondered if anyone of you chaps knew if somewhere like racefit et al did new systems that kept the exup valve?

Failing that, i'll have to finish getting the worst off and see how much of it needs welding

MMUK · Post by **MMUK** » Wed Jun 25, 2014 3:25 pm

Can't you just weld a patch on the pinhole?

Crazy L · Post by **Crazy L** » Wed Jun 25, 2014 3:45 pm

Not finished cleaning it up yet, that was on the 1st stroke of the wire wheel. Dreading the rest of the downpipe now

Fatdog · Post by **Fatdog** » Wed Jun 25, 2014 10:58 pm

If the hole's not to big you can always patch it with exhaust paste.
As MMUK suggested you could weld a patch on but it would require the surrounding metal to be sound.
As far as I know, if you want to retain the exup then the only option is to use a Yamaha item.

Crazy L · Post by **Crazy L** » Thu Jun 26, 2014 11:31 pm

As a matter of keeping you all informed, I had the welder at our place weld the holes up. I will spray the hell out of it and hope they last another year or so. Will splash out on a set of sandys though to have waiting in the wings.

Crazy L · Post by **Crazy L** » Fri Jun 27, 2014 10:31 am

That is a name worth jotting down, thanks MMUK, do you still have contact details, and did you send off your system for them to copy?

I am dubious about dumping the exup tbh. I did read a post by someone somewhere who said the sandy pipes for the 'ace bolted on and worked almost as good right out the box due to cam overlap and profile being different to the older FZRs. Don't know how true this is though.

Delkevic's exup set is now discontinued.

MMUK · Post by **MMUK** » Fri Jun 27, 2014 8:15 pm

The Delkevic pipes will need some re-fueling. The main problem is they are a budget brand and not properly ported so the internals are not perfectly smooth. All this affects the back pressure and gas flow. No two are the same, it's a nightmare!

Just Google for DKU Exhaust Systems, they have a pretty good website. I just popped in with my spare OEM set for them to copy.

robertcains · Post by **robertcains** » Sat Jun 28, 2014 12:25 am

Interesting that Delkavic are a sub company of DK motorcycles in Stoke, is there a connection to DKU by any chance?

Crazy L · Post by **Crazy L** » Sat Jun 28, 2014 12:28 pm

robertcains wrote:Interesting that Delkavic are a sub company of DK motorcycles in Stoke

Hmm, fascinating. Is that a fact?

robertcains · Post by **robertcains** » Sun Jun 29, 2014 4:10 am

Crazy L wrote:
robertcains wrote:Interesting that Delkavic are a sub company of DK motorcycles in Stoke
Hmm, fascinating. Is that a fact?

Certainly is

MMUK · Post by **MMUK** » Sun Jun 29, 2014 10:16 am

robertcains wrote:Interesting that Delkavic are a sub company of DK motorcycles in Stoke, is there a connection to DKU by any chance?

Delkevic and DK are owned by the same person

As far as I'm aware there's no connection to DKU though.....

thunder_taz · Post by **thunder_taz** » Mon Jun 30, 2014 5:13 pm

FZR1000 EXUP pipes fit and they have stainless downpipes but still keep the EXUP valve. The only caveat is that the radiator needs moving forward slightly. I have a set for my fightered Ace but haven't fitted them yet as I need to sort out the buggered bolts on the valve.

Crazy L · Post by **Crazy L** » Sun Jul 06, 2014 10:21 pm

thunder_taz wrote:FZR1000 EXUP pipes fit and they have stainless downpipes but still keep the EXUP valve. The only caveat is that the radiator needs moving forward slightly. I have a set for my fightered Ace but haven't fitted them yet as I need to sort out the buggered bolts on the valve.

Thanks Thunder Taz, that's worth keeping in mind. I had issues with the bolts holding my exup plate on, regular drippings of Plusgas, along with a dremel and an impact driver got mine undone.

Cheers to the rest of you, the zorst is back on the bike after being welded up (for now) and sprayed with copious amounts of vht paint, although, annoyingly, I did chip the bastard while positioning it for mounting, right by the footrest, not overjoyed with that tbh.