Should i install a Jasma hi-cam inside my wira 1.6 4g92p auto sohc? does this modification needs other parts upgrades too...does it have bad effects? what should i consider like the degree or something? sorry sifus and bros noobie here..
okay bro will do, thanks:wavey:check the cam spec sheet first...particularly if there any increase in the lift...stock valve spring have limit of how much lift they can handle...if there a big jump in lift (let say from 7mm to 10mm lift) from stock cams...you might need to change the valve spring and all other related component for reliablity sake...
Thanks bro d7zul, if i were to install a hicam, adjustable cam pulley is a must?here's sumthing u should read
http://www.zerotohundred.com/newforums/features/390887-basic-camshaft-installation-guide.html
i guess i have to wait first la haha..thanks bro..what can i do besides then changing into hicams? i have done most of the basic modification but dont know what to upgrade againTo optimize the high cams, you definitely need a lot more mods to go with it. Adj. cam pulley, spring/valve/retainer, high comp pistons, engine management (most important IMO), etc2.....if you can't do it all of it in one go, better wait first la..
nahhh thinking about staying auto only for awhile until i get my next car..change to manual transmission first bro, then only think of other mods.
i guess you are right bro...better invest in high quality products.Agree with Danz and D7zul...
If it is internal stuff and you are going to use for long, better spend a little bit more now to save a lot in the future in terms of repairs and maintenance. From what I heard, these chicken brand JASMA are poorly manufactured and may require modification to fit even though they say plug and play. I suggest you try works or matspeed camshafts. Go for billet camshafts and you need not worry. Never, ever save cost when modding something internal and subjected to high stress.
actually bro i drive daily until 7k hahahah..yeah port and polish is a way to go!Over n over again jasma issue was brought up. Jasma is an accreditation body for sports muffler in japan (sort of like SIRIM in malaysia). Jasma is not a brand even in japan itself.
Jasma is registered as a brand name in malaysia, taking advantage of its popular name to "fool" unaware users. Products sold by jasma comes from thailand, taiwan, china, etc.
As for jasma cams, i've not heard of any bad review from it yet. Its cheap n cheerful, so dont expect load of power gain from somthing which cost far less.
Stiffer valve springs n retainers are recommended to install along with. The advantage is more on higher rpm where it is more prone to valve float. For me it is not necessary yet if u dont rev ur engine daily till 7000-8000rpm. Save that money for proper port n polish head job. Good port n polish job does give noticeable difference.