View Full Version : RPW's Turbo cam
Hey guys, i just heard from a hot source that The stage 2 turbo cam for the magnas dont really do anything, and i heard that the ones from RPW are dogy, seings as i have paid fair sums of cash for one of these, i would like to know if anyone can either back up a statement to prove me wrong, and what do they actually do, what performance gains am i looking at??, i also did have trouble with the double valve springs RPW (dave told me to put in and will go in with no dramas) well this isnt what the guys told me when they machined my head, they were never made to go straight in, and also i was told by dave that i can put the cam in with no assembly lube, i was told by him face to face that i just wack her in and the oil in the car will eventually lube it up, correct me if im wrong but a cam with no oil would cause some unwanted metal on metal damage..I need some insight here, mainly worried about my turbo cam.
cthulhu
25-01-2006, 06:55 AM
RPWs cams are actually ground by a very reputable company. If there's anything wrong with them it may be that they don't have the exact specifications that you expect them to have, but they only way you'll really find that out is to get out a degree wheel and measure em.
I can't comment on the lubrication question.
Mitsiman
25-01-2006, 07:45 AM
I beleive i know the source you are referrring to - and you are definitly being misled.
The camshafts are sitting in a pool of oil which is what lubricates them. You can pre grease them with an assembly lube as well if you wish there is no harm in this - but it is not absoloutl necessary. Been fitting camshafts for a long time have used both options - being a steel camshaft billet, and due to the setup of the cylinder head with the large amounts of oil that the camshaft is literally soaking in, you woudl have to run the vehicle wiht no oil pressure to actually have a camshaft wear issue.
forgot to add - lubricating the camshaft goes back to the days where the majority of cams were a cast iron camshaft, them metal heat treated with a coating hence the lubing of the cam before use woudl stop the rockers arm contact points from wearing against the camshaft and damaging it. In this case then yes you definitly need to lubricate the camshaft with a moly lube first.
But the cams in the magna range roller rocker, use a roller wheel on the steel camsahft billet, therefoer again not necessary
As far as the turbo profile goes - again been using htem for a long time.
The double valve springs - once again a lot of people using them. I used to use the exact same springs in my 8000 rpm drag car which utilises a magna cylinder head until I went to oversize custom valves and custom valve spring / retainer setup. The thing to remember is the inner spring is not designed to provide excessive amounts of pressure on the spring. It is there to act as a light second dampener to reduce harmonics and provide a different spring rate tension to the retainer, to help stop the valve from "Bouncing" at high rpm. The outer spring is still the one that does 90% of the work. If you go too heavy on the inner spring, you are just needlessly stressing the valve out.
You know our location and have spoken to me in the past - if you have questions like this always feel free to come and talk to me.
sorrie guys its just been a missundersanding
GVR4WA
25-01-2006, 11:02 AM
Hahahah, this place is haunted by cam 'misunderstandings'
We forgive you!
Ps why is this in 2nd gen forum..
cthulhu
25-01-2006, 11:25 AM
Probably because it's a 2nd Gen magna 4G54 cam that he's talking about.. :P
Madmagna
26-01-2006, 06:40 PM
I believe they are done by Waggot, may be wrong, but Waggot do them as well.
While you do not have to lube them, I always do as I will not run the risk of the alloy casting in the head not getting oil, nor the roller rockers.
cthulhu
26-01-2006, 09:38 PM
RPWs 6cyl cams aren't done by Waggot.. I assume their 4cyl ones aren't either, but only Dave knows for sure :think:
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