Honda Spree and Elite 50 Forums

Keeping Spree Elite Aero 50cc and Gyro Alive!
It is currently Wed Jul 18, 2018 3:43 am

All times are UTC - 5 hours




Post new topic Reply to topic  [ 13 posts ] 
Author Message
PostPosted: Sat Apr 14, 2018 12:17 pm 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
Anyone come across this? There's a small (1/8") hole drilled at the lowest point of the header on my Suzuki AE50. At first I thought it was a leak but it looks deliberate. I blocked it with a screw and it now won't start or idle as easily. Maybe it's there as a drain?


Top
 Profile  
 
PostPosted: Sat Apr 14, 2018 12:37 pm 
Offline
CB900F
CB900F
User avatar

Joined: Sat Jun 04, 2016 9:45 am
Posts: 1579
Location: seattle
People have been known to drill hole(s) in the rear chamber of their stock exhausts in search of a performance gain. This practice typically nets no noticable improvement and in some cases hinders the bike’s ability to run at the peak of the manufacturer’s intended design.

Other times, holes are drilled to try and remedy running issues caused by other problems like a carbon caked (plugged) exhaust, maladjusted carb, many others....your hole may be the result of a shoddy “band-aid” repair done by a backyard mechanic to mask the REAL issue of a poor running condition. This would explain why when you plug the hole, it runs like junk.

Its certainly not a drain hole and should be plugged with a bolt, weld, etc...then investigate why your scoot is having issues.

_________________
I need to find some new haters...the ones I have are starting to like me.


Top
 Profile  
 
PostPosted: Sat Apr 14, 2018 12:43 pm 
Offline
CB900F
CB900F
User avatar

Joined: Sat Jun 04, 2016 9:45 am
Posts: 1579
Location: seattle
Unless the hole you describe is the mounting point of a missing heat shield. Either way, should be plugged by a bolt..


Attachments:
F769E3BD-53F6-46BE-8EFF-58DFF5745DF1.png
F769E3BD-53F6-46BE-8EFF-58DFF5745DF1.png [ 217.83 KiB | Viewed 449 times ]

_________________
I need to find some new haters...the ones I have are starting to like me.
Top
 Profile  
 
PostPosted: Sat Apr 14, 2018 1:07 pm 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
Nope, it's a really small hole and looks to be at the lowest part of the header on purpose. I've put a self tapping screw in for the moment and will get the pipe off to investigate further once I've been through the UK road worthiness (MOT) test. This scoot has not been on the road for quite a few years so has a fair build up of gunk in the pipe and it's quite smoky. I'm fairly sure it would fail the MOT test with even a small amount of smoke coming from underneath.


Top
 Profile  
 
PostPosted: Sat Apr 14, 2018 1:51 pm 
Offline
Moderator
Moderator
User avatar

Joined: Wed Dec 29, 2010 10:58 pm
Posts: 4517
Location: Nashville, TN.
Total speculation here: Previous owner likely drilled the hole for reasons only he knows, but likely seeking better exhaust flow.
In doing so, there may have also been some changes in jetting or airbox restrictions.
Now, with hole plugged, tune has changed and you must discern if other factors need to be rectified in order to achieve
an happy engine. MAYBE the "muffler" is somewhat clogged with oil build-up, and the P.O. drilled the hole rather than clean the muffler. Seems likely. Now with hole plugged, engine is struggling to push exhaust. Good luck sir...let us know what you find please... :urban:

_________________
RideRed
OH-ARRR Racing
#53 Gyro

<Honda---Honda---Honda-Honda---Honda>
<Gyro S><XL 100><Helix><XL75><CMX450>
Trooper....Boss....Buzby.Jon-Boy..Dolly
"If the women don't find you handsome, they should at least find you handy"


Top
 Profile  
 
PostPosted: Sun Apr 15, 2018 3:21 am 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
It's amazing that such a small hole can make what seems to be a major difference in starting and idling, I made no other changes, but it will be quick & easy to check. There is a repair on the header pipe a bit further along toward the muffler, it's wrapped with exhaust repair tape that's set hard, again I need to leave that until the scoot is MOT tested, it's not visible from above and should be fine for the MOT test in any case.
In the meantime thanks for all the feedback folks, it'll be a couple of weeks before I can report back as I want to wait until May to get the scoot tested for using on the road. I want to get some miles on my Honda Vision (Aero) during April too.


Top
 Profile  
 
PostPosted: Fri May 04, 2018 1:53 am 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
Seems that plugging the small hole in the header was not causing the problem, it was a coincidence, maybe from tipping the scoot over to get at the header. Things got a bit worse to the point that I had to screw in the idle speed adjuster a long way and still could not get it to idle happily. I took the carb off and found some waxy gunge in the float bowl, the gunge had also got into & blocked the idle jet. From reading around on the Web it seems the waxy deposit is most likely from fuel breakdown, it's odd as I'd flushed the tank after first getting the scoot, so there must have been some residue somewhere in the system.
Anywayz, after a good clean of the jets and another flush of the tank it's all working fine again. Modern fuels eh!


Top
 Profile  
 
PostPosted: Fri May 04, 2018 8:15 am 
Offline
Moderator
Moderator
User avatar

Joined: Wed Dec 29, 2010 10:58 pm
Posts: 4517
Location: Nashville, TN.
Thank you sir for that reply.
How are you proceeding ? With hole plugged ?

_________________
RideRed
OH-ARRR Racing
#53 Gyro

<Honda---Honda---Honda-Honda---Honda>
<Gyro S><XL 100><Helix><XL75><CMX450>
Trooper....Boss....Buzby.Jon-Boy..Dolly
"If the women don't find you handsome, they should at least find you handy"


Top
 Profile  
 
PostPosted: Fri May 04, 2018 8:52 am 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
Yeap, I'll keep it plugged for the short term as I don't want the smoke coming out from underneath while it's being tested. After that, I'm not too sure. I think the hole was made to let out water. If I run the engine for a while, oily water comes out of the exhaust so there must be a fair amount lurking in there. Maybe a few miles of running will sort that out too.


Top
 Profile  
 
PostPosted: Thu May 10, 2018 4:06 am 
Offline
Spree
Spree
User avatar

Joined: Fri Jul 03, 2015 3:21 am
Posts: 142
Location: Manchester, England
Best get it tested before the MOT changes on the 20th May :coolcruise:

_________________
1983 Melody Deluxe II / ND50MC
1984 Melody Mini / NP50D
1979 Simson Schwalbe KR51/1 (think 2 wheel trabant/ East German Honda Cub)


Top
 Profile  
 
PostPosted: Thu May 10, 2018 5:47 am 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
It's a bit smoky for sure but not a diesel!

I was a bit worried about the emissions test but it turns out that 2 strokes & vehicles with less than 4 wheels are not tested for emissions. I went for a test run the other day on private land, it seems to have cleared a lot of the smoke so hopefully a quick Italian Tune-up on the way to the test station will clear up any residue in the can and avoid advisory comments.


Top
 Profile  
 
PostPosted: Mon May 28, 2018 2:26 am 
Offline
Spree
Spree

Joined: Mon Apr 10, 2017 1:45 am
Posts: 102
Location: Lincolnshire, England
My AE 50 scoot passed the MoT with no issues, zero comments about smoke but he did tell me that the crank bearings were toast.. I'd always assumed the noise was just normal but he assured me that it was not. So, after reading some helpful stuff on here about crankcase splitting and bearing replacement. I've done the bearings & seals. On the way, I found the piston in the wrong way round so hopefully another problem avoided.
Thanks again to all the helpful people on here, this has to be the best Internet resource for small scoots that I've found.


Top
 Profile  
 
PostPosted: Mon May 28, 2018 8:44 am 
Offline
Moderator
Moderator
User avatar

Joined: Wed Oct 22, 2008 4:09 pm
Posts: 10902
Location: Deepinnaharta, Texas
Greetings:

Glad you got it sorted out. Many of us have "self-taught" case splitting and reassembly, by looking up how others did it. It sure makes it easier!

_________________
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
Still Seeking Red PCX-150
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox, Carb and Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 99KPH

:coolcruise:


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group