Does anybody know or have any useful links to how to dial in cams with a gauge rather than on a rolling road?

Cheers,
Ian

 

http://www.webcamshafts.com/

they have a nice write up on degreeing. look on the column on the left.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Runnerdown &raquo;</TD></TR><TR><TD CLASS="quote">http://www.webcamshafts.com/

they have a nice write up on degreeing. look on the column on the left.</TD></TR></TABLE>
great find!!!

 

Hi,

Since on this topic, can someone help.

Most non-japanese made cams will give duration and lobe center based on the vtec lobe. But when using a degree wheel, we can't use the vtec lobe as vtec is not on. So how can we degree the cam when only the vtec lobe specs are given??

For example, the Buddy Club Spec 3+ cams specification sheet shows the duration and lift at 1mm and lobe center of intake 100 and exhaust 102.5. And we were told these were using lobe center calculated from the vtec lobe. So when we try to degree the cam i was told it won't work cause they can only degree the cam with the idle lobe only.

In Japanese cams like Jun and Toda, they will give lobe center specs for all three lobes so they can degree it using any lobe which commonly the idle(lowest) lobe.

How do we go about this??

 

Also another thing is, i keep seeing post saying adjust cam intake +1 or +2.

Is this commonly refering to the cam pully adjustment +1 step adjustment? Cause most cam pully +1 adjustment on pulley is actually +2 in the crank.

So just wondering when people say adjust intake cam +2, does it mean adjust the cam pulley so that it shows +2 on cam pulley (+4 on crank) or it actually means +2 on crank (cam pulley on show +1)???

 

You can lock the rocker arms together by swapping the pins around or adding a ball bearing in the left most rocker to lock all three lobes.

There are few threads with pics around here somewhere.

 

yeh i cam across the same problem when we were dialing in the m22s
this is wat we did. we contacted DonF and he has a mocked up B series engine and can measure it up for you.
cos i makes so much more sense to do dial them in this way as u only do it once and leave it.

Ask them for a target lift for the primary lobe at TDC.
i know all the toda cams are set to 1mm of lift at TDC.

heres some pics for u

 

that's the kind of info i was after ...but how

 

i was using the search info about locking the vtec. used various words and found no thread..

Do you know where the thread is?

 

this is what u do
get a TDC guage and a Dial indicator.
then contact DonF on these forums tell him what cams u are using in your car.
then ask him if he can give you a target lift at TDC for the cam on the primary lobe.
he has all this info on hand.

it will come to something il
1.3mm intake
1.1mm exhaust.

you only dial these in on cylinder 1
1. install your TDC gauge and find the TDC on the motor.
2. then intall your dial indicator and have it touching the retainer.
3. losen the cam gear bolts and start turning the camshaft until it lifts 1.3mm
4. lock it up. thats the intake side done
5. now repeat from step 2 and do the exhaust cam.

this is by far the most accurate way to dial in cams not to mention the easiest.
no need to swap pins out.

 

good info

 

you can also lock the rockers with air pressure in the vtec service port if you cant get the small lobe specs. 10mm headed bolt to the left of the header, near vtec solenoid. works better if the engine has been run recently, the oil will help it seal air.

 

or u can do that. but the majority of ppl dont have air compressors at home. and u need a decent size compressor keep the vtec locked in