
ha ha ha hindi naman bro basic lang yan , baka mas malito pag inilagay ko pa dito yun calculus namin dito nya ha ha ha later i'll post my formula in compression ratio thats more effective for me...base on my computation i got 11.7:1 medyo nasa critical na ko and really closed to detonation pag mali ang ginamit na octane rating so i need to do some adjustment pa,gnwa mo na algebra paps ikaw na. dabest ka eh...![]()

walang secret sa makina proper computation and formula used,
. sang country ka nagwork?
peace..thanks chrisniper19 for visiting this thread hope sana kahit na ga palay mi napulot ka bro he he hee2 ang 2nay na guru hehehe.... d lang wido at talent ksma ung brains. un tlga dpat para sure ka sa ggwin mo inde trial mode lagi at pag ok na saka mo lang mssv aus pala un.peace..
snipercj ano napuyat ka ata yesterday kaka basa he he he andyan lang yan di ko pa naman isasara tong thread na to he he he take your time lahat magagawa nyo sa mc nyo disregard nyo na yun technical and fabrication work na post concentrate na lang sa proper tuning....hihihihi![]()

1 Toneladang Palay na ang napulot ko ditothanks chrisniper19 for visiting this thread hope sana kahit na ga palay mi napulot ka bro he he he
Whewwwwwww
UP for 65mm Bore kit by X1R
weyting pa din aq sa Result ni TS...heheheheha ha ha thanks bro, actually hinde naman sya ganun ka critical at for sure mi mga naka gamit na rin nito dito sa site natin ayaw lang mag share ang di natin alam kong positive or neg ang comments my primary concern ko dito is to squeeze out more power from 65mm bore and stroke cons, lang is yung init na ma produce nya sa combustion chamber i can do it in 11.7:1 CR pero masyadong ma stress ang head due to pressure produce and a few ml na paiikutin ng water pump sa block we can lower the CR to 9-10 bawas nga lang ang power ng makina, ikaw ang iniintay ko bro para sa big valve upgrade he he he wala pa ba? paki sabay na sa seat at yun details ng deposit eh di mo pa na pm masyadong bz ata bro he he he1 Toneladang Palay na ang napulot ko ditoWhewwwwwww
UP for 65mm Bore kit by X1R
weyting pa din aq sa Result ni TS...hehehehe

BIG VALVE kasabay kxe ng AHM GOLD un dadatingha ha ha thanks bro, actually hinde naman sya ganun ka critical at for sure mi mga naka gamit na rin nito dito sa site natin ayaw lang mag share ang di natin alam kong positive or neg ang comments my primary concern ko dito is to squeeze out more power from 65mm bore and stroke cons, lang is yung init na ma produce nya sa combustion chamber i can do it in 11.7:1 CR pero masyadong ma stress ang head due to pressure produce and a few ml na paiikutin ng water pump sa block we can lower the CR to 9-10 bawas nga lang ang power ng makina, ikaw ang iniintay ko bro para sa big valve upgrade he he he wala pa ba? paki sabay na sa seat at yun details ng deposit eh di mo pa na pm masyadong bz ata bro he he he![]()
ndi pa tapos ung order namin eh within this week bigyan kta updates
anyway weyt mode kmi,sa ngaun ok na bike ko
same specs ang kinabit
pero ndi na sumabog
ehehehehe...GODSPEED AHEADhahaha oo papz, kahit diko na makayanan antok ko talagang basa. hehehe onga papz, kung may tools/equipment lang ako na ganyan baka ganyan na din pinaggagawa ko. actually, ako na rin ang nagkabit ng block ko simula nung na-stock bike ko. tamang basa at aral lang ako so ayun, kahit papano masasabi ko na kaya kong buuin ang bike ko. hehehhe tsaka dagdag pa itong thread mo, lalo akong natututothanks chrisniper19 for visiting this thread hope sana kahit na ga palay mi napulot ka bro he he he
snipercj ano napuyat ka ata yesterday kaka basa he he he andyan lang yan di ko pa naman isasara tong thread na to he he he take your time lahat magagawa nyo sa mc nyo disregard nyo na yun technical and fabrication work na post concentrate na lang sa proper tuning....![]()
ganon pa naman ako, pag nasimulan ko, go go go! hehe keep on going papz 
add lng bro axon.. kng sa mga serious modder dyan make sure yng combustion chamber nyo sa head is almost same with the stock computation with regards to bore kit 65mm. if not then ull get overcompression. were using same computation here jst like urs bro heheeh..but since yng cylinder head is getting lesser with its chamber size in relation to the bore ratio kng mag add ka like 65mm. in that case... mahirap mag mods sa head, to really get what bro axon's sharing mods , not unless tulad tau natin si mr. d.i.y. kagaling.ha ha ha i'm not a master pwede master sardines na kabarkada ni 555 at century tuna ha ha ha haeveryone can do it, and everyone can destroy it , kaya we got 2 meaning of DIY
Do It Yourself and Destroy It Yourself, yes motto lang yan pero yan ang totoo rigth?
in connection sa project, computation na ako sa compression ratio , and valve ratio to piston size,target intake and exhaust valve unknown
here the example i used and try to analyze it, why i need 23/20 and not 22/19 based on oem sizes sa mga newbie he he he para maunawaan natin kung bakit tayo nag papalit ng big valves this is one basic reason why ....everything in engineering involve ang math and this sniper engine is a basic example of 4 stroke with 1 piston 4 valves and 1 cam,
on stock
bore =54mm
in =19mm
ex = 17mm
on intake side first,
54bore /19intake = new bore 65/new intake size=X
simple equation for X
x=19mm intake x 65mm bore /54 oem
=22.85 mm intake for new 65mm piston
same formula i used for exhaust side
54bore /17exhaust =65bore /x
x=17mm ex. x 65mm /54 oem
=20.4mm exhaust
even we used ratio between bore and intake of stock and bore intake of new bore kit with above result
54/19=2.84
65/22.8=2.85

that's it either 22/19 or 23/20 meron pros and cons akong nakikita, but in terms of durability i prepared 22/19 valves , and beside what is few mm less from exact ratio? its only 1mm 0.5 on both side rigth so yun kulang nun eh kaya ng habulin ng mga cam with high lift with longer duration right? so achieve pa rin natin ang valume ratio from cam adjustment, the cons using 23/20 is the space between two intake valve halos wala na silang clearance, in connection sa vixion kit yes iba bro ang vixion compare sa steel bore in terms of performance my bro has it, most biker misunderstood between size and quality, i'm planning to used this 65mm bore kit just only for fun and curiosity how much power ang maibibigay nya sa mc natin with proper Air Fuel ratio of 14.7? if i'm not satisfied back to vixion kit of 57mm and my valves is already match with this size,add lng bro axon.. kng sa mga serious modder dyan make sure yng combustion chamber nyo sa head is almost same with the stock computation with regards to bore kit 65mm. if not then ull get overcompression. were using same computation here jst like urs bro heheeh..but since yng cylinder head is getting lesser with its chamber size in relation to the bore ratio kng mag add ka like 65mm. in that case... mahirap mag mods sa head, to really get what bro axon's sharing mods , not unless tulad tau natin si mr. d.i.y. kagaling.
experienced ko bro axon before 61mm 22/19 considering 11.5 comp ratio medyu kulang yng 22 /19
as of experienced lng. try to lower the comp ratio i dont get the better rpm too ..
ewan need pa talaga marami ka pera para ma test lahat. in the end binenta ko yun last june pa.
now im using vixion kit with 22 /19 valves i get better result than of 61mm in terms of performance
try to ask traxx d effect,
wala na yng comp tester nmin kaya wala nko ma share kng anung comp ratio. unless may mag donate hahaha
remind ko ulit bro yng sa pag uwi mo heheheehe tanx
i have compression tester the one i used in my car he he he 



the first culprit and upper valley boys) u wont stay with that displacement.
and another good solution to make this project is by port and polish , in my opinion polish and sligthly port lang ako sa intake side, then on exhaust i made a little bit bigger than intake, maybe someone asking me why only slightly port and polish on intake ,
remember guys our engine is SOHC means 1 cam meron tinatawag na overlap between this two cam(intake and exhaust) in certain degree, dahil iisa sila we cannot do anything about it eto yun initial valve opening, yun exhaust side remain sligthly open while the exhaust cycle completed, during the overlap period the inlet valve remains high pressure until the exhaust valve closes, nag create ng momentary back flow sa inlet port, so vacuum po tayo sa intake not positve pressure( magiging positive pressure pag nag turbo charger na,) thats why i prepared na polish lang ng intake and slightly port ,para mas mabilis ang hitit , compared sa positive pressure created at the end of stroke,
tanong bakit mas maliit ang exhaust valve kung mas maganda bumuga sa malaking pipe? later hahaba na masyado at tatamarin na kyong basahin he he he
at wala na pong sticker ni isaa pati yun ibang decal tatangalin ko na rin as in plain na sya this coming nov. para mapag kamalan na racal nya ha ha ha ha,
pero sabi nga kanya kanyang trip yan ha ha ha