93 VFR750 RC36 Posted August 11, 2010 Author Share Posted August 11, 2010 Not sure yet but should ride on the weekend. I'm still doing the last of the bodywork. See my rebuild thread for details. http://www.vfrdiscussion.com/forum/index.php/topic/61955-rebuilding-my-93-rc36/ Last night was the first fire-up since I started the rebuild. Sounds awesome! Even with the spud in it sounds pretty good. Not as muted as my Scorpion can with the spud in and a deeper growl. Carbs are out of balance by 4-6 in.hg so I've got to sort that out and then hit the road. Stew Link to comment Share on other sites More sharing options...
Guest Posted August 11, 2010 Share Posted August 11, 2010 Not wishing to detract from thefine work above, Sandy Exhaust are Chinese imports and do not have a reputation for quality in the UK VFR forum. For a quality s/s exhaust UK Viffers fit Motad - the fit of which has been developed and is now seen as exceelent. Motad also offer a lower cost/lower quality unit, called the Venom I think but not sure. Tony Link to comment Share on other sites More sharing options...
93 VFR750 RC36 Posted August 11, 2010 Author Share Posted August 11, 2010 Tony, You're entirely correct about the SBS exhausts, hence the work detailed above. The right exit system (replacing stock) is indeed a feat of insanity. I was sent one by mistake and even if I'd ordered it, would have sent it back immediately. The collector section was terrible with poor joins/bends everywhere. I'd be surprised if the engine could even be made to run with that system fitted. The right exit system benefits from only having two joins in the centre section and all the bends are smooth. Both these joins have the problems you see above, but the rest of the system is OK. There are no dents/crimps in any of the pipes and the downpipe flange welds that meet the head are much better than the ones in the OEM I took off. I talked to Motad and it would seem that Predator are Motad in budget form. I went for the SBS because I am capable of fixing the join myself, got a good price and wanted left exit. I would NOT recommend their right exit replacement system and I would only recommend the left exit to someone who can cut and weld SS to a decent standard. I'll have the bike on a dyno soon and will be able to let everyone know if this is a mistake or not. Stew Link to comment Share on other sites More sharing options...
93 VFR750 RC36 Posted August 12, 2010 Author Share Posted August 12, 2010 To further back my previous post, here are a few pics of the right exit system I was sent by mistake. A warning for all potential buyers - if you go for SBS, get the left exit and make sure you have the skills (or friend with the skills) to cut and weld SS exhaust. In the first photo have a close look inside the pipe. You can see a ragged oxy-acetylene cut hole in the side. THIS IS THE JOIN!!! Not pretty! Can anyone say square corners/poor joins? In summary this exhaust is good from afar but far from good. Wouldn't put one on my bike. Stew Link to comment Share on other sites More sharing options...
Member Contributer Mrgrn Posted August 15, 2010 Member Contributer Share Posted August 15, 2010 if i had a donor i can get a group buy done on a few sets within a few weeks. they can come ceramic coated too and the merges will be nicer for sure Link to comment Share on other sites More sharing options...
SEBSPEED Posted August 15, 2010 Share Posted August 15, 2010 if i had a donor i can get a group buy done on a few sets within a few weeks. they can come ceramic coated too and the merges will be nicer for sure We should get someone to send you a Two Brothers exhaust to replicate! Also, I have a Vance & Hines full 2-2 system for my 1983 VF750F(also fits VF700F) that needs to be re-made in SS. I'm certain we can get interest in both if you can provide an idea of cost in a separate thread? I can volunteer to provide a right exit Two Brothers exhaust(4th gen, 94-97), and my V&H 2+2 (83-85 VF700/750F) ... Link to comment Share on other sites More sharing options...
Member Contributer Mrgrn Posted August 15, 2010 Member Contributer Share Posted August 15, 2010 if i had a donor i can get a group buy done on a few sets within a few weeks. they can come ceramic coated too and the merges will be nicer for sure We should get someone to send you a Two Brothers exhaust to replicate! Also, I have a Vance & Hines full 2-2 system for my 1983 VF750F(also fits VF700F) that needs to be re-made in SS. I'm certain we can get interest in both if you can provide an idea of cost in a separate thread? I can volunteer to provide a right exit Two Brothers exhaust(4th gen, 94-97), and my V&H 2+2 (83-85 VF700/750F) ... we should get a new thread going if you don't mind? three weeks is about the rough turn around from fixture to copies. The first pipe is the most expensive as i have to pay for a fixture so say 5+ helps eat that initail cost if you will alot will depend on muffler options too but roughly with a cool muffler and ceramic coating full SS $600-$750. i get around $325 just for a GP carbon muffler alone but we can get some deals going for sure if we get enough people, i say about 5+ would make it rock and i would have to get the firn numbers of course but they won't be $400. Link to comment Share on other sites More sharing options...
Druid Posted October 16, 2010 Share Posted October 16, 2010 To further back my previous post, here are a few pics of the right exit system I was sent by mistake.  A warning for all potential buyers - if you go for SBS, get the left exit and make sure you have the skills (or friend with the skills) to cut and weld SS exhaust. In summary this exhaust is good from afar but far from good.  Wouldn't put one on my bike. Stew I bought a set of right exit SBS headers for my 96 VFR.  The design is much better than the 3rd gen headers, and externally it looks good. I had similar problems to you though, see my post here.  I'm going to have to do the same as you to sort it.  I can't weld stainless, but I know a man who can. SBS headers are £185, Motad are nearly £400.  When I only paid £750 for the bike it's a no brainer really. Link to comment Share on other sites More sharing options...
93 VFR750 RC36 Posted May 30, 2011 Author Share Posted May 30, 2011 Druid, How did you get on with your SBS exhaust modifications? I noticed from your post that your internal joins were even worse than mine. I'm now getting 106.5hp out of my bike. Modified intake and SBS exhaust seems to work. I've done some looking around and it looks like my exhaust (and yours by the look of it) is a copy of a Remus pattern but with terrible joins. Hope you're on the road now and running well. Stew Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted June 3, 2011 Member Contributer Share Posted June 3, 2011 I've done some looking around and it looks like my exhaust (and yours by the look of it) is a copy of a Remus pattern but with terrible joins. I didn't think Remus ever made a full exhaust system? In case anyone was wondering, I've attached below some pics of the original Motad 3rd-gen replacement stainless steel headers. The 3rd-gen muffler attachment point is notoriously difficult to replicate (apparently)...with the result being some rather frightening joins across the board... 0110 Motad RC36-I stainless steel replacement headers, purchased new in 1998. 0109 Motad RC36-I stainless steel replacement headers, purchased new in 1998. 0108 Motad RC36-I stainless steel replacement headers, purchased new in 1998. Ciao, Link to comment Share on other sites More sharing options...
SEBSPEED Posted June 3, 2011 Share Posted June 3, 2011 In case anyone was wondering, I've attached below some pics of the original Motad 3rd-gen replacement stainless steel headers. The 3rd-gen muffler attachment point is notoriously difficult to replicate (apparently)...with the result being some rather frightening joins across the board... What's up with the groovy dent there? Surely not a performance enhancement on a brand new header? Link to comment Share on other sites More sharing options...
Druid Posted June 9, 2011 Share Posted June 9, 2011 Druid, How did you get on with your SBS exhaust modifications? I noticed from your post that your internal joins were even worse than mine. I'm now getting 106.5hp out of my bike. Modified intake and SBS exhaust seems to work. I've done some looking around and it looks like my exhaust (and yours by the look of it) is a copy of a Remus pattern but with terrible joins. Hope you're on the road now and running well. Stew Yes, all done. I did a build thread on a UK forum, this is what I posted about my exhaust issues. First impressions were ok, reasonably tidy welds and a decent finish but I was horrified to see just how little care had gone into the production of the pipes. This is what I saw when I looked down the pipe from the front cylinder - only about a quarter of the pipe was open, so gas flow was going to be somewhat restricted. The other pipe was almost as bad. A bit of research showed that this was a common problem with these pipes and if I returned it the replacement would be just as bad. OE downpipes are £325 from David Silver, or Motad do s/s replacements for £385 so I would just have to see what I could do with the set I had. I couldn't actually get to the bits that needed attention so I had to cut off a length of pipe to give me access. It was a bit scary taking an angle grinder to a set of brand new exhausts but it had to be done. One pipe had a weld a couple of inches from the joint so I cut through there, and cut the second pipe to a similar length. I could now get a flexible drill drive with a grinding stone in the pipe and started grinding away the excess metal. Trouble is stainless steel work hardens when it gets hot, so it's a very slow process. I would do a bit, get pissed off with the lack of progress and put it away and do something else instead, then come back to it a week later. It's nearly there - not perfect but a hell of a lot better than it was. A mate of a mate can TIG weld, and a bottle of scotch later the pipes are all back together. They were surprisingly easy to fit with new gaskets and plenty of copper grease on the studs. The high level silencer shows off the SSSA quite nicely, I think, and cost £23 from ebay. It is an unknown make, but it is road legal so it will replace the noisy Micron I had fitted - the Micron will go on ebay to make some of the money back. If anybody wants to read the whole thread, click here :) Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted June 9, 2011 Member Contributer Share Posted June 9, 2011 In case anyone was wondering, I've attached below some pics of the original Motad 3rd-gen replacement stainless steel headers. The 3rd-gen muffler attachment point is notoriously difficult to replicate (apparently)...with the result being some rather frightening joins across the board... What's up with the groovy dent there? Surely not a performance enhancement on a brand new header? Yes it was...and stop calling me Shirley! Ciao, Link to comment Share on other sites More sharing options...
Member Contributer Ranger77 Posted June 17, 2011 Member Contributer Share Posted June 17, 2011 Wow! That is some piss poor manufacturing there. Link to comment Share on other sites More sharing options...
Member Contributer Dutchy Posted June 17, 2011 Member Contributer Share Posted June 17, 2011 Wow! That is some piss poor manufacturing there. :+1: Link to comment Share on other sites More sharing options...
retro1 Posted March 12, 2015 Share Posted March 12, 2015 anyone know if this would fit an 86? the reason i ask is because i can tig ok (not great but ok) and im not scared to take a 9" to shiny stuff. Link to comment Share on other sites More sharing options...
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