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Post by vintagepgogod123 on Mar 14, 2016 15:13:34 GMT -5
HI, I have been here for about a few days helping a lot of you two strokers out there I own a vintage 1987 PGO Star 50cc 846 MILES my pride and joy who is very rare, although I don't have to worry of anyone stealing this because its so old when she tanks I am the only and second owner who has never gave up on her. Cheers anyone need any vintage two stroke help I am able to trace parts considering during 1982-87 PGO used others parts as rebadge from Yamaha, Honda, and Kymco with a hint of sym. Here's the story, my scooter was owned for 29 years by the orginal first top 81 vespa dealers in USA, out of those 29 years it have slept for 18 of those 29 years. All pristine I've f'ed up a few times, spent countless hours researching but I know everything there is to know about it. She never had a manual, (not available anywhere) so I really had to over power my self to change the specs. Previously ran on the original top end it featured a 40mm x 39.3 dished piston but has been converted to 40mm x 39.2 dome top piston which provides more low end speed and ran rich at idle only. It may not be perfect, may need a smaller piolet, but she runs and I love her she is possibly the only scooter designed as a 50cc meant to carry auto parts and over 80lbs worth of tools. For the record I am a mobile mechanic who operates off his scooter hahaha interesting enough as it sounds auto is as easy as throwing fairy dust to me. But my 2 stroke I went hard for it, title repairs, and all gone all out. Couple days til tabs so I can finally drive her home away from his other home. Here is a photo last time I cleaned her up. 
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Post by vintagepgogod123 on Mar 13, 2016 22:08:59 GMT -5
WHERE ALL MY PGO AND GENUINE SCOOTER KILLAHS UP IN THIS TIP NO OTHERS ALLOWED PGO/GENUINE SET ONLY
87 PGO STAR 50 WA STATE 206 WHERE THE REST OF MY HOMIES AT STATE YEAR PGO OR GENUINE.
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Post by vintagepgogod123 on Mar 13, 2016 21:59:09 GMT -5
my scooters probably the oldest here listed, my scooters so old that PGO doesnt even remember The STAR 50
you no what i say to dealerships who abandon there old listings, manuals, and info?
FUA them!
i had to rebuild my pgo top end off the mental, i ride and died for all the custom work and rebuilding my own specs.
(shares carb kymco and sym)
1987 pgo star low miles 800-846 miles.
mintstored for 18 of its 29 year life mint.
i got called crazy and some mo sh by people laughed at and more. but at the end of the day i trcked the title down fixed that tip on custom specs, if anyone shall HAPPEN to steal my scoot or hit me THEY HAVE (A)ngle (S)ide (S)ide wopping comming of a life time ven ifmy arm was broke imma killla bi dead if they insurance wont pay out 1k flat.
last 3 of its kind ANYWHERE!
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Post by vintagepgogod123 on Mar 13, 2016 21:43:50 GMT -5
cant help with the rest but i think needle attatched to the float slips on the float then again i say try both ways some are on the float others go over top the float.
next start with 1 1/8 and see if she runs good there, to be sure since your enrichning circuit is already set then start with that warm when you snap your throttle shouldnt bog and should not hang to idle down. snap idle down instanty.
SNAP IDLE DOWN INSTANTLY
any other way is incorrect.
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Post by vintagepgogod123 on Mar 13, 2016 17:31:01 GMT -5
I don't know how to adjust it. The service manual I found for the similar Hyosung model said "remember the settings when you take apart the carb". lol. But it was already fiddled with when I got it. It's running well on the stand but I don't want to make it overheat by making it too lean. Hyosongs been making polished turd garbage for years your best bets to measure the bolts or mount and swap with a keihin clone. If there is no adjustment screws "set the old carb on the ground eye ball it well at eye ball level take a few steps back and PUNT that ! Theres a whole pile of hysongs that have been sitting in bent bike for YEARS goes to show there dealer trash. If you find a adjusting screw, bottom it out gentally then turn 1/8 outward at a time. if it has one of those fat swatt back jugs on the side there is a needle in there up clip lean down clip richer. Swatt back jug is the enrichner circuit 1) adjust enrichner circuit cold 3-4 position needle. 2) air screw adjustment when hot only or after stall. 3) if no start after warm adjust the needle height attatched to throttle cable. 3-4 position. Laugh it up get fed up and drive. |
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Post by vintagepgogod123 on Mar 13, 2016 17:21:06 GMT -5
I don't know how to adjust it. The service manual I found for the similar Hyosung model said "remember the settings when you take apart the carb". lol. But it was already fiddled with when I got it. It's running well on the stand but I don't want to make it overheat by making it too lean. Hyosongs been making polished turd garbage for years your best bets to measure the bolts or mount and swap with a keihin clone. If there is no adjustment screws "set the old carb on the ground eye ball it well at eye ball level take a few steps back and PUNT that ! Theres a whole pile of hysongs that have been sitting in bent bike for YEARS goes to show there dealer trash. If you find a adjusting screw, bottom ot out gentally then turn 1/8 outward at a time. Of it has one of those fat swatt back jugs on the side there is a needle in there up clip lean down clip richer. 1) adjust enrichner circuit cold 3-4 position needle. 2) air screw adjustment when hot only or after stall. 3) if no start after warm adjust the needle height attatched to throttle cable. 3-4 position. Laugh it up get fed up and drive. |
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Post by vintagepgogod123 on Mar 13, 2016 14:51:07 GMT -5
to convert to manual if you have a two hose fuel cock remove it from the tank and drill the inside hole dont g streight throgh the bottom
Next you can buy a small clamp and hose cut the vaccum line if its a clear type off the bike slip on the hose add a clamp to the tip of the inlet then heat the open tip with the tank empty on the clear line enough to where it turns to glue without burning it get needle nose pliers and squeeze it shut like a pixie stick tip block off the vaccum at the carb with the same proceedure and done.
before you mount your lines figure out here it has the least flow when you shut of your line a hair should look like the fuels backing up when turning it close to the off position. WALLAH manual petcock.
stick it in a close position to where your hand can fit under the body when necessary never turn the cock fully off just enough to show back up when engine stops. dont fully zip tie the clear hoses as after heating for a long period of time they collapse.
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Post by vintagepgogod123 on Mar 12, 2016 14:37:53 GMT -5
Updated march 13, 2016 No rough idles, does not stumble in any shape, form, or fashion in a sense am I suppose to oil those cone type filters?
Its set to a tee doesnt run rich at all only at idle splooge occurs at high speed she is perfectly fine (more added info March 13, 2016)
I am not running oil rings on it but have a 2-3 ring set installed without the oil control ring for more power, original bore specs 40mm x 39.3 dished changed to 40mm x39.2 to clear the dome top piston upgrade currently runs with advanced timing at the pickup generator. (Shaved slotting).
You flick the throttle she returns back like a champion. On hills she pulls at 20mph if you zoom up with no cargo added.
Ive fumbled with the carb twice i think i should provide update after i replace the h/g other then that she runs 40mph tops.
In addition she is all custom running a kymco, sym, pgo, Honda carb specs 19mm 42-43mm center bolt mount flange type.
I think splooge is considered pampering at idle, at high speeds there is visually none what so ever, she smokes mildly from the exhaust from time to time not enough to smoke the block out.
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Post by vintagepgogod123 on Mar 11, 2016 15:03:58 GMT -5
Sploogy at idle, at high speeds runs fine.
No stalling no bucking. Idle sits a bit on the high side at .40 NGK gap at standard .24-.28 gap idles perfect clutch not partially engaged but gets fouled easily.
Last done after first set up was clip height at the throttle between 3-4 clip at the bottom of the needle.
2 position too lean 4th too rich 3rd right but sploogy non adjustable perfect enriching circuit.
"All though splooge won't kill me I just want perfect idle vs .40 gap due to splooge or I will have to run non foiling plug in winter or upgrade my clutch springs to 2k."
Thoughts anyone?
Seems like its better in case of hot weather, prevents siezure, i have a cone filter upgrade and a dish top piston conversion to dome top -.1 on stroke height + milled head.
Btw F. SPREE.NET
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Post by vintagepgogod123 on Mar 11, 2016 12:29:05 GMT -5
Pull speedo cable out frpnt tire clean iit test drove if that didn't help pull speedo clean the tip of cable then inside the socket knock down any sharp edges then its fixed. |
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Post by vintagepgogod123 on Mar 11, 2016 12:17:21 GMT -5
"Buckem" head gasket simple goes up (bump side facing head) cylinder head goes on if it looks like an H on the jug match it up on the head if its a square hg there is no correct dirrection. Bumps just face cyl head always use a old school type rod torque wrench estimated torque should be 8- 8.8 ft lbs in thr vase of nm specs that will also be on the wrench as well. Never use cheap electric wrenches for torque this low or click type t wrenches. Duces!
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Post by vintagepgogod123 on Mar 11, 2016 12:02:35 GMT -5
If it runs 20 minutes then your entichning circuit is what's causing the start up, sploog is from richness try adjusting the air screw. If you snap the throttle on stand and the rpm is slow returning that's the issue, you also may have a worn top end after 5-1k miles clone top ends throw the flag. You can also adjust throttle clip height I operate on sploogw my piolets slighly too large so that leaves me room for exhaust upgrade splooge only on idle you have splooge at high rpm your mains drowning you 50s use primarly 75-  stock depending on elevation. "Adjust needle clip attatched to throttle cable" raising c clip up needle leans down Richens always stay between 3-4 position." Never go lean no smoke should always look like mild smoke like a cold car. Never go over rich makes piston melt. Winter i use .40 gap on ngk fresh top end summer stock gap .24-.28 Tip should be coffee brown but not oily |
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Post by vintagepgogod123 on Mar 10, 2016 22:48:09 GMT -5
Ch check the carb may have a stuck needle on the enrichhning system/choke/bypass starter smoke is apearrent its too rich a 2t Is beautiful. Air screw can also need adjusting.
I run on the winter splooge time at a 0.24-28 gap in the winter on NGK with .40 stock gap in the summer the gap closes and the splooge vanishes next to nothing in summer which allows smaller gap.
Compression is as high a 210psi to 180psi in summer weather. Splooge can't form due to its combustion from external heat from the world.
Brown coffee spark plug.
How you tune it is what matters.
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stock depending on elevation.