here is the start of the cam spec list i'm doing

can some one make this a sticky. might stop the same questions every second day

 

 

Attachments:

ford cams.doc [47.5 KiB] Downloaded 2671 times

hey nice work. I guess it might be a bit of a task getting specs from some cam manufacturers?

yeah.

JMM
RPD
Surecam
to list only few dont list specs.

if any one knows of them post them up and i'll add to the list.
do not PM them to me.

also might help if we all post our verdict of the cams we have all used

I don't get it ? all you have done is C&P off the websites ?

Most people wouldn't be able to understand what all those numbers mean anyway.

good work bud i dont mean 2 be rude but i think it wud be better to have the brands and what is needed to have the cam in your car and a price. Cause ppl wont know what they mean, but i dont mean to be rude just some constrctive critercism

i surely did just cut paste. It's mostly to stop the all the posts asking "Whats the specs of XXXX cam?"

and it gives a quick and easy reference for people to use when asking and answering the hundreds of cam realated questions we get every month.

For the people that don't what it all means this thread will be a good place to ask the question and have it answered. But a quick search would find it"s been asked and answered a number of times.

Ok then ticky, u asked for it.

What does it all mean????

ok then. so how about we start with lift.

Lobe lift- is the difference in height between the radius of the base circle and the height of the eccentric (the height of the bumpy bit if you will)

valve lift is is the distance the valve is lifted from its seat. almost all quoted valve lift numbers are as measured with ZERO lash. (valve clearence set to ZERO)
valve lift is the product of lobe lift and the rocker ratio. in the case of the I6ohc engine it will be lobe lift by 2 for pre EL hybrid and by 1.8 for hybrid and AU spec engines.

Duration- is the time IN DEGREES OF CRANKSHAFT ROTATION that the valve is lifted off its seat. crow cams 2222546 has a duration of 290deg on both the intake and exhaust lobes.


Timing- expressed as in35/75 ex75/35 (crow cams 2222546) is the point in crankshaft rotation that the valve is unseated and seated (for lack of a better term) by the cam shaft. in this case the intake valve is unseated 35 BTDC and is seated again at 75 ABDC
and the exhaust valve is unseated at 75 BBDC and seated at 35 ATDC








i'm not going to sit here all night and explain every thing, but i'll ad to it later

There are some really good pages on the net explaining each and how they change things like idle quality, torque, peak power, power band, and economy. I would suggest anyone who is interested does a google search and post links to pages you find helpful.

Here's something I've had sitting on my PC for a couple of years...
Might be a bit out of date.

 

 

Attachments:

File comment: Cam specs Camshafts.xls [22.5 KiB] Downloaded 685 times

i have a bunch of good links here. i'll be posting them in the above post aswell

That's awesome man. When you can see when something has rotated X degrees away from it's starting point, adding the below and above top or bottom dead centre references explains it much better to me.

Understood the theory of duration and lift, but not knowing where the the measurements(degrees away from) started from didn't make sense to me prior to reading this

(am a little trashed lol ^ hope this reads well later!!)

is the dev 3 cam specs for an au or e series??

are all those surecam grinds for e series or are any of them for an au ?
thaks mate.

After a turbo application cam for AU engine...
Where ? / Is there any around ???
I have rang Wade , Crow etc and they always say next month !!!
After cam and springs..

call surecam, custom grind on a new billet will be about $600 to $800.
and no you wont get one the week you ask for it.

We don't want it next week.. Just like to know when and when they say next month !! Crowe etc have been saying that for months...
Actually off and on since Nov 06...

sure cam dont take to long to make up a custom cam, y not do that?

Are they out of billets again?
I remember there was a shortage a while back, no one could get a billet cam.

surecam are pretty good. i think we waited about 2 weeks for our RB30 cam

has anyone heard of camtech? ive just recently disovered there existance and man do they do some big cams http://www.camtechcams.com.au/

here is a direct link to their Ford cam specs list
http://www.camtechcams.com.au/cat/ford.html

check out the RPM range on some of those babys