Sun Jun 06, 2021 10:54 am

Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

 
Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

Sun Jun 06, 2021 10:54 am linkquote
Hi
Where can I buy a vmc head ? A person had shared a link with me for this site and the head but I havenít got a clue what it says

https://www.avotecnica.com/cilindri-gruppi-termici/1894-testa-di-ricambio-per-177-stelvio-e-super-g-in-alluminio-pressofuso-attacco-candela-laterale.html

Thanks



Sun Jun 06, 2021 11:13 am

Ossessionato
VSX, Stella 177, VNX1T, V9B1T
Joined: 20 Jul 2018
Posts: 3177
Location: Staten Island, NY
 
Ossessionato
VSX, Stella 177, VNX1T, V9B1T
Joined: 20 Jul 2018
Posts: 3177
Location: Staten Island, NY
Sun Jun 06, 2021 11:13 am linkquote
They don't or couldn't ship to USA for me 2 yrs ago and refunded me after a month or more of emailing them to ask where my shipment was. I don't hold it against them, but you might want to check if they ship to your location currently. I never got the vmc kit from them, and went with the malossi kit I have now as a result.
Sun Jun 06, 2021 11:22 am

Member
Vespa 125TS
Joined: 24 Dec 2019
Posts: 9
Location: UK
 
Member
Vespa 125TS
Joined: 24 Dec 2019
Posts: 9
Location: UK
Sun Jun 06, 2021 11:59 am

Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

 
Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

Sun Jun 06, 2021 11:59 am linkquote
swiss1939 wrote:
They don't or couldn't ship to USA for me 2 yrs ago and refunded me after a month or more of emailing them to ask where my shipment was. I don't hold it against them, but you might want to check if they ship to your location currently. I never got the vmc kit from them, and went with the malossi kit I have now as a result.
Not sure if Molassi will work , I was going to order it in case my excess squish doesnít work out , the vmc or bgm head is suppose to work toward taking up the excess clearance.
Sun Jun 06, 2021 12:01 pm

Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

 
Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

Sun Jun 06, 2021 12:01 pm linkquote
Thanks Pete Iíll keep that one in mind , big difference in price .
Sun Jun 06, 2021 12:40 pm

Banned
2:6
Joined: 11 Jan 2007
Posts: 7777
Location: San Francisco
 
Banned
2:6
Joined: 11 Jan 2007
Posts: 7777
Location: San Francisco
Sun Jun 06, 2021 12:40 pm linkquote
why the interest in that head? fins look thick and not enough of them to me, but could be missing something
Sun Jun 06, 2021 1:00 pm

Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

 
Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

Sun Jun 06, 2021 1:00 pm linkquote
oopsclunkthud wrote:
why the interest in that head? fins look thick and not enough of them to me, but could be missing something
Apparently the way itís designed it will take up excess clearance between piston and head, the squish on mine is quite high.
Sun Jun 06, 2021 9:43 pm

Molto Verboso
One or two fun scoots....nothing too precious
Joined: 17 Jul 2013
Posts: 1698
Location: UK (South East)
 
Molto Verboso
One or two fun scoots....nothing too precious
Joined: 17 Jul 2013
Posts: 1698
Location: UK (South East)
Sun Jun 06, 2021 9:43 pm linkquote
I cannot comment on that particular head. The VMC head that I use on a DR177 cylinder is CNC milled, with radial fins and zero squish, so you can run with a 1.0mm (or even 1.5mm) base packer, and still have a respectable squish. This gives some useful port timing flex without using a 60mm stroke crank. The BGM head takes this to the next level, because it slips inside the bore, thus allowing even more flex, but then you'd want a GS piston with thinner rings. At that point, you might as well have bought a full VMC or BGM cylinder kit



Mon Jun 07, 2021 7:46 am

Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

 
Ossessionato
1963 VBB2T
Joined: 07 Nov 2012
Posts: 2511

Mon Jun 07, 2021 7:46 am linkquote
swa45 wrote:
I cannot comment on that particular head. The VMC head that I use on a DR177 cylinder is CNC milled, with radial fins and zero squish, so you can run with a 1.0mm (or even 1.5mm) base packer, and still have a respectable squish. This gives some useful port timing flex without using a 60mm stroke crank. The BGM head takes this to the next level, because it slips inside the bore, thus allowing even more flex, but then you'd want a GS piston with thinner rings. At that point, you might as well have bought a full VMC or BGM cylinder kit
Before I even finished reading I had thought sheeesh might as well had with a vmc or Bgm head.
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