View Full Version : BC 272 cams, retarding and advancing with adjustable cam gears
s13silvia123
09-26-2012, 08:02 AM
anyone running BC 272 cams with JWT cam gears
what did you guys advance your cams to on the intake side and exhaust side that works will with the BC cams
need some input ASAP i'll be dyno tuning my motor within a few weeks.
d_nice
09-26-2012, 08:03 AM
yes please same question with the 264
OBEEWON
09-26-2012, 08:51 AM
Sell the 272's. They will NEVER tune right.
264's are ok, but BC got retarded on 272's. I had a NIGHTMARE with them and their customer service is like talking to Hezbollah's complaint department.
s13silvia123
09-26-2012, 09:07 AM
yeah i was told some of the 272's fine with you adjust the cam gears
i wanna say i went -6 on my intake with a tomei gear. nothing wrong with BC's
just like anything manufactured there can be a bad batch. however i have had zero issues with mine with lots punishment throw at them
godrifttoday
09-26-2012, 11:02 AM
U guys need to degree the cam that's why they don't work right
only reason i went -6 is thats where th epower was for my set up.
s13silvia123
09-26-2012, 11:15 AM
U guys need to degree the cam that's why they don't work right
yeah thats why i want to degree it to make it work right. i've been reading alot about these cams seems like those who figure it stopped posting on the FWD SR forums.
there is no right # to go by each set up will work diffferent. a friend had BC272's and he went -2 in -2 exhaust on his set up.
without datalogging there is no way to really tell.
godrifttoday
09-26-2012, 11:29 AM
there is no right # to go by each set up will work diffferent. a friend had BC272's and he went -2 in -2 exhaust on his set up.
without datalogging there is no way to really tell.
There's the wrong way to do it... And there is your way of doing it... And there is the manufactures way to do it... Just because you read on the Internet of someone doing that to his setup, it don't mean it will work for u... Too many variables involved
I know which one I'll select... Lol of not mistaken all manufactured of after market cams tell u at what degree your cams need to be set at to work as intended.... If you deviate from it, then your car would be harder to idle and u won't gain any performance gains... A lot of videos on YouTube on how to degree your cams
There's the wrong way to do it... And there is your way of doing it... And there is the manufactures way to do it... Just because you read on the Internet of someone doing that to his setup, it don't mean it will work for u... Too many variables involved
I know which one I'll select... Lol of not mistaken all manufactured of after market cams tell u at what degree your cams need to be set at to work as intended.... If you deviate from it, then your car would be harder to idle and u won't gain any performance gains... A lot of videos on YouTube on how to degree your cams
yes their are tons of things that play a factor which is what i am saying, he cant go by 1 persons way and it will work on his set up.
but there are lots of "things" they say wont work or wont make power but they indeed do.
so just stick to the basics!
s13silvia123
09-27-2012, 08:22 AM
this is for an SR
The intake cam is on a 108 centerline and the exhaust is on a 116 centerline.
Zero is the starting point but you can retard the intake 1-2 degrees and advance the exhaust 1-2 degrees to widen the lobe separation to smooth out the power band and eliminate any overlap.
this is for a KA
The intake cam is on a 121 lobe center and the exhaust is on a 116 lobe center. This is actually the same timing as the OEM cams and I believe the JWT cam are very close as well.
leave the exhaust cam on the 116 lobe and advance the cam intake 2 cam degrees which is 4 crank degrees (1 cam degree = 2 crank degrees)
Zero is always the starting point unless you are going to put a degree wheel on the crank but this would be the recommendation.
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