bluehawkkevin
Well-Known Member
guy's my MHR 70cc cylinder has met its end, it walls were chipped-off, i got this polini evo cylinder and i was wondering how to match the rectangular shape to my old exhaust round flange
polivi evo exhaust port exit match??
- Thread starter bluehawkkevin
- Start date
Boelie035
Hoi..
You could make a new one like i did for my HR2 pipe.. , i believe this will give you the most increase of power.
But if you are not able to produce a new one like on the pic i would take away some metal in the flange so nothing is blocking the excaust port.. You can use a ''dremel'' for this...
Good luck..
But if you are not able to produce a new one like on the pic i would take away some metal in the flange so nothing is blocking the excaust port.. You can use a ''dremel'' for this...
Good luck..
Attachments
tiba_karotsu
OVERREV TUNING
what pipe are you using? MHR? it would be hard to match it perfectly to the outlet of the cylinder, you'll have to weld on material & port it to get that oval shape.
are you planning on porting the Evo cilinder too? i hope you don't ruin it, goodluck.
are you planning on porting the Evo cilinder too? i hope you don't ruin it, goodluck.
Big B NRG
Well, this is awkward
Check out this link. PM Joël. I think he can hook you up if you want to.
http://forum.scooterforum.net/forum/2552957-post180.html
http://forum.scooterforum.net/forum/2552957-post180.html
bluehawkkevin
Well-Known Member
thank you guys for the info , i got this 1 cm aluminum courtesy of our scraps from work..hehehe , did some designing and measurements , some drilling and polishing bingo...i will try it tonight, yup its an mhr pipe , for the EVO porting i have just ported some thin layer (using diamond piece in it, not smooth , you can feel some roughness, noy the usual mirror shine , )since i think the port are just enough for my setup , but am planning to port the crankcase too...just want to feel the new evo first and compared it to my MHR block...
