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Post by dexameth on Feb 23, 2017 11:24:18 GMT -5
So I ordered a "100cc BVH 23mm intake" head from eBay. Got here and it's a 47mm with 21.4mm intake port.   I left the plastic on it just in case I have to send it back. What do you guys think, will a 47mm head work on my 50mm kit and even better, will the Airsal piston touch this head? I don't have the piston yet and I've never done piston squish clearance tests... I'll use this head if its okay with my bbk. I dont remember what my bbk head looks like, but the rain is about to stop so I might be able to tear it apart soon and compare. |
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Post by dexameth on Feb 23, 2017 11:31:19 GMT -5
The seller just responded that they use that head with the 52mm kits and a domed piston with no issues, lets hope!
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Post by 90GTVert on Feb 23, 2017 22:41:51 GMT -5
23mm refers to the size of the intake valve, not the size of the intake port. Measure the head of the valve.
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Post by dexameth on Feb 24, 2017 7:12:42 GMT -5
Ahh yes haha all this time I thought it was the port. The valve is 23mm.
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Post by greggkinney on Apr 10, 2017 8:19:23 GMT -5
So I ordered a "100cc BVH 23mm intake" head from eBay. Got here and it's a 47mm with 21.4mm intake port. I left the plastic on it just in case I have to send it back. What do you guys think, will a 47mm head work on my 50mm kit and even better, will the Airsal piston touch this head? I don't have the piston yet and I've never done piston squish clearance tests... I'll use this head if its okay with my bbk. I dont remember what my bbk head looks like, but the rain is about to stop so I might be able to tear it apart soon and compare. $27 glixal big valve head? |
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Post by dexameth on Apr 10, 2017 8:51:45 GMT -5
I payed $31.49 for mine but it is a Glixal.
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Post by knobby on Apr 10, 2017 13:53:21 GMT -5
Not familiar with specifics of your setup, but I do know from my car experience that you can run a 4t head with a smaller chamber than the bore size successfully. So that by itself would not concern me. Upside is they can have good ping resistance because of the nice squish ring. Downside is the edge of your intake valve is shrouded more than it needs to be.
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Post by greggkinney on Apr 11, 2017 8:48:40 GMT -5
I payed $31.49 for mine but it is a Glixal. [brwhich size head gasket did you use? 47mm or 50? i ordered the glixal head to play around with. its going on a second scoot with the 50mm kit that im taking off my gt5. |
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Post by dexameth on Apr 11, 2017 8:54:58 GMT -5
I payed $31.49 for mine but it is a Glixal. [brwhich size head gasket did you use? 47mm or 50? i ordered the glixal head to play around with. its going on a second scoot with the 50mm kit im taking of my gt5. 50mm. |
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Post by greggkinney on Apr 11, 2017 9:40:43 GMT -5
has it got any faster or slower since breaking in? my gearings holdin me back at 54mph drafing or downhill even. flats is 53 screaming lol avg is 48-50. hoping the 52mm build will hold 54 if the cvt can take the heat of the gears being maxed out. ive got a vip with a shortcase i could swap gears from but im giving it to a friend hopefully today
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Post by dexameth on Apr 11, 2017 10:17:03 GMT -5
Faster! Haha I'm hitting 63mph downhill and 60 on flats with no wind. I can get up to 55 with headwind and tucked.
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Post by greggkinney on Apr 11, 2017 12:57:12 GMT -5
I payed $31.49 for mine but it is a Glixal. my glixal came today, after reading the 6 reviews (3 good 3 bad) i was skeptical about what it would be like. mines actually pretty good. valves seal, but theyre still getting lapped, and the casting us on par. needs a little cleaning up but ive seen worse |
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Post by dexameth on Apr 11, 2017 13:12:58 GMT -5
I payed $31.49 for mine but it is a Glixal. my glixal came today, after reading the 6 reviews (3 good 3 bad) i was skeptical about what it would be like. mines actually pretty good. valves seal, but theyre still getting lapped, and the casting us on par. needs a little cleaning up but ive seen worse I didn't lap mine... I was going to but I was too excited! And yeah quality was amazing. I was was it didnt come with studs, and the ones I had were stuck in. Luckily the local scooter garage had a few used ones they gave me. |
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Post by greggkinney on Apr 11, 2017 14:07:12 GMT -5
no studs or gasket lol but i got extra of all 3 bbk sized
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Post by magoconnor on Aug 19, 2018 18:26:25 GMT -5
Did the 47mm Bvh work with the airsal piston?
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