first true 50mm ive seen

millsc · 01-31-2013, 12:39 PM

I got my kit in today from ebay scooter-parts 1 its a true 50mm kit all the others have been 48mm downside the head doesn't have the bigger valves like 02starider and robotechlegacy's kits have. So i won't be running the 24mm carb with it, not sure i will run the exhaust either. The mod on the roketa has begun i'll update when done.

lovemy2strokes · 01-31-2013, 12:52 PM

The kit from starrider was a 50mm that I got, I didnt notice bigger valves tho just a different style head I thought. I have one of the heads here also Ill go look.

millsc · 01-31-2013, 12:55 PM

You want to sell or trade heads? starriders piston was 49mm i believe.

lovemy2strokes · 01-31-2013, 12:56 PM

My head looks the same as the one in the picture. I just got another head from starider.
Ill upload the pic to photobucket in a sec, but its going to look just like yours.

millsc · 01-31-2013, 12:57 PM

The ones i done from starrider and robotech the valves measured bigger by a few mm. The 50mm heads that is.

millsc · 01-31-2013, 01:04 PM

staridder piston its short by a few mm

lovemy2strokes · 01-31-2013, 02:03 PM

Id have to tear that engine back apart but mine measured 50mm to the T. I always check everything from ring gap to crank run out when I rebuild.

lovemy2strokes · 01-31-2013, 02:05 PM

The head needs to be planed in my opinion from starider. Theres more imperfections in the casting than most kits.

lovemy2strokes · 01-31-2013, 02:35 PM

If youre coming up to St Louis anytime soon Ill give you another 50mm head from starider that I took off in place of a hoca head, the guy ran it maybe for 3-400 miles. Ill be leaving for Montana on a plant observation on Sunday to next Thursday but I can always leave it somewhere or give it to someone you know here in St Louis.

millsc · 01-31-2013, 02:38 PM

the valves look bigger on yours, the head i just got has 18/16 valves.

millsc · 01-31-2013, 02:44 PM

compare the pics

lovemy2strokes · 01-31-2013, 03:52 PM

Ill get out my good ol measurin stick later on

millsc · 01-31-2013, 03:54 PM

the valves probably are at least 19mm, i'm not going to attempt to run a 24mm carb with the small valves.

suddethtray · 02-04-2013, 02:50 AM

i got same kit mine is 50mm and doin great

buford1488 · 02-04-2013, 05:35 PM

http://www.scootdawg.net/attachment....1&d=1360013294

now lets get real..you say hoca and ebay stuff is the only place that has a true 50mm head.....now this is a TRUE performance head big valves-3-angle valve seats-port by hand- detailed bowl porting-profiling. trust me when i tell ya this is the only true performance head out there... that stuff you got there is nothing on this.........buford

01-31-2013, 02:38 PM	#10
millsc Join Date: May 2012 Location: missouri Posts: 164	the valves look bigger on yours, the head i just got has 18/16 valves. __________________ B.A.M.F. tapout scoot 24mm carb 150cc intake performance exhaust A9 cam hoca big valve head 16/50 gears 9.25 gram dr pulley sliders koso variator 1.5k torque spring orange coil orange unlimted cdi uni filter gates premium belt 2012 taotao vip cy50a scrappys 110cc big bore kit 52mm "88cc" 100 main jet 38 idle iridium plug custom paint, leds and decals alarm system naraku hd crankshaft
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01-31-2013, 03:54 PM	#13
millsc Join Date: May 2012 Location: missouri Posts: 164	the valves probably are at least 19mm, i'm not going to attempt to run a 24mm carb with the small valves. __________________ B.A.M.F. tapout scoot 24mm carb 150cc intake performance exhaust A9 cam hoca big valve head 16/50 gears 9.25 gram dr pulley sliders koso variator 1.5k torque spring orange coil orange unlimted cdi uni filter gates premium belt 2012 taotao vip cy50a scrappys 110cc big bore kit 52mm "88cc" 100 main jet 38 idle iridium plug custom paint, leds and decals alarm system naraku hd crankshaft
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01-31-2013, 12:52 PM	#2
lovemy2strokes Join Date: Oct 2012 Posts: 40	The kit from starrider was a 50mm that I got, I didnt notice bigger valves tho just a different style head I thought. I have one of the heads here also Ill go look.
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01-31-2013, 12:56 PM	#4
lovemy2strokes Join Date: Oct 2012 Posts: 40	My head looks the same as the one in the picture. I just got another head from starider. Ill upload the pic to photobucket in a sec, but its going to look just like yours.
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01-31-2013, 02:03 PM	#7
lovemy2strokes Join Date: Oct 2012 Posts: 40	Id have to tear that engine back apart but mine measured 50mm to the T. I always check everything from ring gap to crank run out when I rebuild.
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01-31-2013, 02:05 PM	#8
lovemy2strokes Join Date: Oct 2012 Posts: 40	The head needs to be planed in my opinion from starider. Theres more imperfections in the casting than most kits.
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01-31-2013, 02:35 PM	#9
lovemy2strokes Join Date: Oct 2012 Posts: 40	If youre coming up to St Louis anytime soon Ill give you another 50mm head from starider that I took off in place of a hoca head, the guy ran it maybe for 3-400 miles. Ill be leaving for Montana on a plant observation on Sunday to next Thursday but I can always leave it somewhere or give it to someone you know here in St Louis.
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01-31-2013, 03:52 PM	#12
lovemy2strokes Join Date: Oct 2012 Posts: 40	Ill get out my good ol measurin stick later on
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02-04-2013, 02:50 AM	#14
suddethtray Join Date: Dec 2012 Posts: 22	i got same kit mine is 50mm and doin great
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