Wed Oct 20, 2021 5:11 am

Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
 
Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
Wed Oct 20, 2021 5:11 am linkquote
Hi all,

anyone here who knows if it is possible to use the cylinder of the HPE (1A011781) as a replacement for a 2015 engine (old cylinder: 1A001833)?

Thanks!

Juxus
Thu Oct 21, 2021 10:47 pm

Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
 
Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
Thu Oct 21, 2021 10:47 pm linkquote
Maybe someone has pictures of a disassembled HPE engine or cylinder?

BR, Juxus
Tue Oct 26, 2021 4:42 am

Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4330
Location: Netherlands Olst
 
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4330
Location: Netherlands Olst
Tue Oct 26, 2021 4:42 am linkquote
no problem will fit but it won't give you no extra HP the HPE one is black painted the older non HPE is silver painted thats all the differents
Tue Oct 26, 2021 6:12 am

Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
 
Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
Tue Oct 26, 2021 6:12 am linkquote
Thanks for your answer, Maksor!

I ordered the HPE cylinder incl. piston now - it was only half the price of the old one. My old piston broke during a dyno run at >40 hp at the rear wheel. To be fair, it was modified for bigger valves and higher compression.

I am curious ... I read somewhere that Piaggio used different coating and if the piston is the same as the old one. The part numbers of the pistons are at least different.
Tue Oct 26, 2021 7:51 pm

Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4330
Location: Netherlands Olst
 
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4330
Location: Netherlands Olst
Tue Oct 26, 2021 7:51 pm linkquote
yeah but that because its a different color
Mon Nov 01, 2021 9:49 am

Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
 
Member
GTS
Joined: 19 Aug 2020
Posts: 19
Location: Berlin Germany
Mon Nov 01, 2021 9:49 am linkquote
I got the HPE cylinder today, it can be used as a re-fit for the old one. Piston has a different new structural design and different pistons rings. Cylinder itself is made from iron cast, weights 1300 grams more than the old aluminum one. No coating or similar on the piston.
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